facility explorer rooftop top unit (rtu) controller

Application Note Rooftop Unit Controller Issue Date October 9, 2009

Application Note Rooftop Unit (RTU) Controller

Application Note Rooftop Unit (RTU) Controller .....................................4

Introduction............................................................................................................4

Related Documentation.........................................................................................5

Key Concepts.........................................................................................................6

State Based Control ............................................................................................................. 6

Occupancy Determination.................................................................................................... 7

Zone Temperature Control................................................................................................... 8

Effective Zone Temperature Setpoint Determination ........................................................... 8

Occupied Control Sequencer ............................................................................................. 10

Unoccupied Control Sequencer ......................................................................................... 12

Sequencers........................................................................................................................ 14 No Airflow..................................................................................................................... 14 Unit Enable................................................................................................................... 15

Control of Staged Devices ................................................................................................. 16 Zone Control of Staged Devices .................................................................................. 16

Device Availability Determination....................................................................................... 16

Dehumidification................................................................................................................. 17

Output Device Control........................................................................................................ 17 Mixed Air Damper ........................................................................................................ 17 Heating......................................................................................................................... 21 Cooling ......................................................................................................................... 23 Supply Fan ................................................................................................................... 25 Aux Exhaust Fan.......................................................................................................... 27 Power Exhaust Fan...................................................................................................... 27 PID Tuning ................................................................................................................... 28 Integral Time ................................................................................................................ 28 Proportional Band ........................................................................................................ 28 Saturation Time............................................................................................................ 28

FX Builder Application Wizard Concepts ..........................................................29

Installing the RTU Application Package ............................................................................. 29

Selecting the RTU Application Template ........................................................................... 33

© 2009 Johnson Controls, Inc. www.johnsoncontrols.com Code No. LIT-12011437

2 Application Note Rooftop Top Unit (RTU) Controller

Configuring the RTU Application........................................................................................ 35 Configuring the Control Strategy.................................................................................. 35 Network Room Module (NRM) ..................................................................................... 37 Adjusting Setpoints ...................................................................................................... 39 Adjusting Parameters................................................................................................... 41 Adjusting Proportional plus Integral plus Derivative (PID) Parameters ........................ 43 Configuring the Internal Occupancy Schedule............................................................. 45 Viewing the Configuration Summary............................................................................ 46

Selecting the User Interface(s) and Supervisor Interface .................................................. 47

Selecting the Target Device ............................................................................................... 48

Configuring the Hardware I/Os........................................................................................... 49

Generating the Application Files and Documentation ........................................................ 51 Viewing Generated Application and Documentation Files ........................................... 52

Reviewing an Exported Application File............................................................................. 52

FX CommPro Concepts.......................................................................................55

User Interface Concepts......................................................................................55

Medium User Interface....................................................................................................... 55 Medium User Interface Capabilities ............................................................................. 56 Medium User Interface Navigation............................................................................... 56 Config Folder................................................................................................................ 58 NRM Setup Folder ....................................................................................................... 60 Status Folder................................................................................................................ 61 Setpoints Folder ........................................................................................................... 62 Parameters Folder ....................................................................................................... 63 PID Parameters Folder ................................................................................................ 64 Modes .......................................................................................................................... 65 Balancer Folder............................................................................................................ 68 Time Folder .................................................................................................................. 69 Schedulers Folder ........................................................................................................ 70 Password Folder .......................................................................................................... 70 MUI Status LEDs.......................................................................................................... 70 Accessing a Folder in the MUI ..................................................................................... 70 Changing a Configuration Setting, Setpoint, or Parameter in the MUI......................... 70

LCD2x4 User Interface....................................................................................................... 71 LCD2x4 User Interface Capabilities ............................................................................. 71 LCD2x4 User Interface Navigation............................................................................... 72 Config Page ................................................................................................................. 74 NRM Setup Page ......................................................................................................... 76 FX Setup Page............................................................................................................. 77 Setpoints Page............................................................................................................. 77 Parameters Page ......................................................................................................... 78 PID Parameters Page .................................................................................................. 79 Modes .......................................................................................................................... 80 Balancer Page.............................................................................................................. 82 Time Page.................................................................................................................... 83

Application Note Rooftop Top Unit (RTU) Controller 3

Schedulers Page.......................................................................................................... 85 Password Page ............................................................................................................ 85 Events Page................................................................................................................. 85 Graphical Status Icons ................................................................................................. 85 Accessing a Page in the LCD2x4 UI ............................................................................ 86 Changing a Configuration Setting, Setpoint, or Parameter in the LCD2x4 UI.............. 86

Supervisor Interface ............................................................................................86


Application Note Rooftop Unit (RTU) Controller

Introduction This application note introduces the standard Rooftop Unit (RTU) application template, provides procedures to configure the application using FX Builder’s Application Wizard, and provides procedures to commission the system using the Integral and Medium User Interface and FX CommPro.

The RTU application template consists of a single application software file, which includes multiple configuration options and control strategies for controlling many different types of rooftop units. You use FX Builder’s Application Wizard to select the specific configuration options and control strategies for your specific rooftop unit control requirements. The allowable heating and cooling configuration options appear in Table 1.

Table 1: RTU Configuration Options Configuration Setting Allowable Options Temperature Control Strategy Zone Temperature Control Zone Sensor TM-2100

Network Room Module Cooling None

1-4 Stages Proportional Valve

Heating None 1-4 Stages Proportional Valve

Economizer None Dry Bulb Differential Temperature (Outside < Zone) Single Enthalpy Differential Enthalpy

Indoor Air Quality Control Enable Disable

Continued on next page . . .


Configuration Setting (Cont.) Allowable Options Occupied Supply Fan Control Constant Fan

Cycled Fan Unoccupied Control Enable

Disable Aux Exhaust Fan Control Type None

On-Off by SF Status On-Off by SF Command

Power Exhaust Fan Control Type

None On-Off by OA Damper Feedback On-Off by OA Damper Command Modulating by Building Static Pressure Modulating by OA Damper Feedback

Remote Setpoint Type Warm/Cool Adjust Setpoint Adjust

Unoccupied Cooling Valve Control

Closed Low OAT Position

Unoccupied Heating Valve Control


Use Return Air Temperature Sensor for Control

No Yes (Use RAT sensor instead of NRM built-in sensor)

Use Supply Fan Status for Interlock of Power Exhaust Fan

No Yes

Optional Alarm Selection Supply Fan Proof Dirty Air Filter

Reset After Loss of Airflow Manual Automatic

Power Fail Restart Enable Disable

Related Documentation Table 2: Related Documentation For Information On See Document LIT or Part Number FX07 Overview Information FX07 Field Controller

Product Bulletin LIT-12011268

FX07 Technical Information FX07 Controller Product Bulletin

LIT-12011269

Using the Application Wizard

FX Tools Software Package - FX Builder User's Guide

LIT-12011154

Downloading and Commissioning

FX Tools Software Package--FX Builder User Guide FX Tools Software Package--FX CommPro BACnet User Guide

LIT-12011152 LIT-12011240


Key Concepts State Based Control

Figure 1: State Based Control Diagram

The RTU application uses State Based Control to ensure proper control of the Rooftop. State Based applications have the following components.

• Inputs: Extract information from the system. Examples include hard-wired sensors (for example, zone temperature sensor), switches (for example, proof of airflow switch), and network overrides (for example, networked outside air temperature).

• Parameters: Refer to pieces of information stored inside the application. Examples include configuration settings, setpoints, unit parameters, and Proportional plus Integral plus Derivative (PID) parameters. Many parameters are adjustable.

• Miscellaneous Logic: Defines all logic not defined via a State Generator or Output Controller. Examples include occupancy determination and active setpoint determination.

• State Generators: Defines the sequences of operation for a specific control system. State generators need information from the appropriate inputs or parameters or status information from the output controllers to ensure proper sequencing.

• State Selector: Receives state information from all of the state generators. The state selector then determines the current set of output controller modes based on the current states of all the state generators.

• Output Controllers: Defines the operation of the output devices (for example, valves, dampers, and fans) based on the modes determined by the State Selector.

• Outputs: Converts the output controller information into action. Examples include valve and damper outputs, fan commands, and cooling and heating stage commands.


Occupancy Determination The RTU application supports the following:

• a local and network occupancy schedule with the network schedule having priority

• a network occupancy sensor input

• a temporary occupancy input (initiated via the TM-2100/NRM) and a network occupancy manual command with the network occupancy manual command having priority

Table 3 displays the occupancy determination for the RTU application.

Table 3: Occupancy Determination

Occupancy Manual Command

Occupancy Schedule

Occupancy Sensor

Effective Occupancy1

Occupied Occupied Unoccupied

X Unoccupied

Occupied Occupied Bypass Unoccupied Bypass

Standby X

X

Standby Occupied Occupied Unoccupied Standby

Occupied

Invalid2 Occupied

Invalid

Unoccupied X Unoccupied

1. The Effective Occupancy is overridden to Bypass when the Local Bypass input becomes active and nciTempOccCtrl=TRUE. The Effective Occupancy remains in Bypass for the duration of the Bypass Time.

2. Standby and Bypass states are treated the same as Invalid.


Zone Temperature Control The RTU sequences the controlled devices to control the zone air temperature to a constant setpoint.

Effective Zone Temperature Setpoint Determination The effective (actual) zone temperature setpoint (to which the RTU application controls) depends on several inputs, including:

• occupied and unoccupied heating and cooling setpoints (configured via cpSetpoints)

• network setpoint override (nviSetpoint)

• network warm/cool adjustment override (nviWarmCoolAdj)

• warm/cool or setpoint adjustment from the zone thermostat

• current effective occupancy state

• zone temperature (from the NRM/TM-2100 sensor or network zone temperature override nviSpaceTemp)

The effective zone temperature setpoint is calculated using the LON Asymmetrical Setpoint Calculation Method.

The first step is to calculate the absolute setpoint offset, which is found using the equation in Figure 2. Setpoint is the local setpoint from the 13 - 30°C (55 - 85°F) setpoint adjustment zone thermostat or the network zone temperature override nviSpaceTemp.

absOffset Setpoint nciSetpoints_OccCool nciSetpoints_OccHeat2

Figure 2: Calculate the Absolute Setpoint Offset

The next step is to calculate the effective heating and cooling setpoints based on the effective occupancy mode. If the unit is in the occupied or bypass mode, the effective heating and cooling setpoints are found using the equations in Figure 3. SetptOffset is the warm/cool adjustment from the zone thermostat or the network warm/cool adjustment override nviWarmCoolAdj.

ClgSetpoint nciSetpoints_OccCool absOffset SetptOffset nviSetptShift_OccCool

HtgSetpoint nciSetpoints_OccHeat absOffset SetptOffset nviSetptShift_OccHeat Figure 3: Calculate the Effective Heating and Cooling Setpoints in

Occupied or Bypass Mode


If the unit is in the standby mode, the effective heating and cooling setpoints are found using the equations in Figure 4.

ClgSetpoint nciSetpoints_StandbyCool absOffset SetptOffset nviSetptShift_StandbyCool

HtgSetpoint nciSetpoints_StandbyHeat absOffset SetptOffset nviSetptShift_StandbyHeat Figure 4: Calculate the Effective Heating and Cooling Setpoints in Standby Mode

If the unit is in the unoccupied mode, the effective heating and cooling setpoints are found using the equations in Figure 5.

ClgSetpoint nciSetpoints_UnOccCool absOffset SetptOffset nviSetptShift_UnOccCool

HtgSetpoint nciSetpoints_UnOccHeat absOffset SetptOffset nviSetptShift_UnOccHeat Figure 5: Calculate the Effective Heating and Cooling Setpoints in Unoccupied

Mode

The effective heating and cooling setpoints are limited by the minimum cooling setpoint and the maximum heating setpoint, which are set to 16 and 30°C (60.8 and 86°F), respectively. The RTU application provides two different physical setpoint adjustments. One setpoint adjustment type is an offset (warm/cool) adjustment and the other adjustment type is an absolute setpoint adjustment. You can only use one adjustment type at any given time.


Occupied Control Sequencer The Occupied Control Sequencer generates the appropriate occupied temperature control state for the RTU application. See Table 4.

Table 4: Occupied Sequencer State Description Zone Damper

Enters this state when heating is needed and primary heating is either not satisfying the heating setpoint or is not responding.

Primary Heat Enters this state when heating is needed. Satisfied Enters this state when no heating or cooling is needed. Econ Enters this state when economizer cooling is allowed and needed, and

mechanical cooling is not yet needed or does not respond. EconMech Enters this state when economizer cooling cannot satisfy the cooling

setpoint and mechanical cooling is responding. Mech Enters this state when economizer cooling is not allowed or not

responding and mechanical cooling is responding and is needed. Discharge Air Low Limit (DALL) Econ

Enters this state if low limit temperature control is required, and the low limit temperature is reliable; or if low limit temperature control is required, the low limit temperature is required and reliable, and mechanical cooling is not responding. The objective is to allow the damper to modulate between minimum and maximum position to control the low limit temperature to the low limit temperature setpoint.

DALL Heating

Enters this state if low limit temperature control is required, and the low limit temperature is reliable; or if low limit temperature control is required, the low limit temperature is reliable (and economizer is either not responding, not allowed, or not satisfying the low limit setpoint). The objective is to allow heating to control the low limit temperature to the low limit setpoint.

DALL Damper

Enters this state if low limit temperature control is required, and the low limit temperature is reliable; or if low limit temperature control is required, and heating is not responding or is not satisfying the low limit temperature setpoint. The objective is to allow the damper to modulate between 0% and minimum position to control the low limit temperature to the low limit setpoint.

Shutdown Enters this state if the zone temperature is unreliable.


Figure 6: Zone Occupied Control Sequencer


Unoccupied Control Sequencer The Unoccupied Sequencer generates the appropriate unoccupied temperature control state.

Table 5: Zone Unoccupied Sequencer State Description Satisfied Enters this state if no heating or cooling is required. Econ Clg Enters this sate when economizer cooling is allowed and needed,

and mechanical cooling is not yet needed or is not responding. Econ Mech Enters this state when economizer cooling cannot satisfy the

cooling setpoint, and mechanical cooling is responding. Mech Enters this state when economizer cooling is not allowed or not

responding, and mechanical cooling is responding and is needed. Primary Heat Enters this state when heating is needed. Idle Enters this state when cooling is needed. This state is used to

allow the fans to start and obtain an accurate reading of outside air temperature to determine free cooling availability.

Shutdown Enters this state if the zone temperature is unreliable. Disabled Enters this state if occupancy is not unoccupied.

Start Zone Temp unreliable

Zone Temp reliable

Heating Demand is satisfied and the 5 min.

satisfied timer has expired.

Unoccupied control is allowed and Heating is required and

WarmupCooldown is not Cooldown.

Unoccupied control is not allowed but Heating is required and

WarmupCooldown is Warmup.

Occupancy mode is unoccupied.

Occupancy mode is not unoccupied.

fig:z

one

unoc

c_se

q_he

atin

g

WarmupCooldown = Cooldown

Figure 7: Zone Unoccupied Control Sequencer – Heating


Figure 8: Zone Unoccupied Control Sequencer – Cooling


Sequencers No Airflow The application monitors the supply fan command and proof of flow input and determines whether the current state is Normal, Manual Reset Fault, or Self Reset Fault. Table 6 displays the states in the No Airflow module. Figure 9 displays the No Airflow Sequencer process.

Table 6: No Airflow State Description Normal Enters this state when the fan behavior matches the fan

command. Manual Reset Fault

Enters this state during the manual reset fault state. The application is in this state because there is no proof of airflow and the unit requires manual intervention to restart.

Self Reset Fault Enters this state during the automatic reset fault state. The application is in this state because there is no proof of airflow and the unit does not require manual intervention to restart.

Figure 9: No Airflow Sequencer


Unit Enable The Unit Enable sequencer starts the unit. If the Power Fail Restart Enable configuration parameter input to the sequencer is disabled (No), then the state output matches the value of the unit enable input. If Power Fail Restart Enable is enabled (Yes), then the state output is true. The state output is true only if the unit enable input is true and the unit is powered up for a randomly generated time period in the range of 0 seconds to the Maximum Power Fail Restart Delay time. Table 7 displays the states of the Unit Enable sequencer.

Table 7: Unit Enable Sequencer States State Description True Enters this state when the unit is enabled and allowed to run. False Enters this state when the unit is not enabled and not allowed to run.

The value of the unit enable input to the sequencer is determined by the Unit Enable Switch input and the Unit Enable network input (Table 8).

Table 8: Determination of Unit Enable Input to Unit Enable Sequencer Inputs Result Unit Enable Network Input (nvi)

Unit Enable Switch Input

Unit Enable Input to Sequencer

Disable (0) Closed False Disable (0) Open False Enable (1) Closed False Enable (1) Open True Invalid Closed False Invalid Open True


Control of Staged Devices The RTU application provides a zone control strategy for sequencing staged devices.

Zone Control of Staged Devices Figure 10 shows the staging points for the zone control scheme. The up arrows indicate turn on, and the down arrows indicate turn off. The stages turn on and off based on the PID present value. Devices are staged based on First In Last Off (FILO).

Figure 10: Zone Control of Staged Devices

Device Availability Determination Based on outdoor temperature, the RTU application locks out heating (via High Outside Air Temperature Lockout for Heating lockout setpoint) or cooling (via Low Outside Air Temperature Lockout for Cooling lockout setpoint) devices from the network.


Dehumidification The RTU application determines the state of dehumidification control based on the dehumidification process variable and its reliability, corresponding setpoint, heating and cooling setpoint.

Table 9: Dehumidification States State Description Satisfied Enters this state when dehumidification is not needed, so normal

temperature control is allowed. Dehumidify Enters this state when dehumidification is required. The cooling coils

are controlled using the humidity process variable and the humidity setpoint. The heating coil is controlled using the temperature setpoints and zone temperature to prevent over cooling.

Humidity Unreliable

Enters this state when the humidity sensor is unreliable. In this state, dehumidification is disabled and normal temperature control is allowed.

Output Device Control Mixed Air Damper The RTU application provides control of a mixed air damper. This means that a single Analog Output (AO) controls the mixing of outside air with return air.

Economizer Suitability The RTU application supports the following economizer suitability schemes:

• dry bulb switch-over

• differential temperature

• Single Enthalpy

• Differential Enthalpy


Table 10: Economizer Suitability Economizer Enabled (cpEconSelect)

Network Economizer Availability (nviEconCmd)

Economizer Switchover Type

Outside Air Conditions

Economizer Suitable (nvoEconAllowed)

Disabled X X X No Yes X X Yes No X X No

OAT ≥ DBSpt1 No Dry Bulb OAT < DBSpt – TempDiff2

Yes

OAT ≥ ZNT3 No Differential Temperature OAT < ZNT –

TempDiff Yes

OAEnth >= EnthSetPt4

No Single Enthalpy

OAEnth < OAEnthSp –EnthDiff5

Yes

OAEnth >= ZoneEnth6

No

Enabled

Auto

Dual Enthalpy

OAEnth < ZoneEnth –EnthDiff

Yes

1. DBSpt = Dry Bulb Setpoint (cpDrybulbSP) 2. TempDiff = Differential Temperature Setpoint (cpTempDiff) 3. ZNT= Zone Temperature 4. EnthSetPt = Enthalpy Setpoint (cpEnthSetPt) 5. EnthDiff = Differential Enthalpy Setpoint (cpEnthDiff) 6. ZoneEnth = Zone/Return Air Enthalpy

Indoor Air Quality The RTU application supports optionally resetting the minimum damper position based on carbon dioxide (CO2) level. The reset is proportional-only control and is shown in Figure 11.

Figure 11: Damper Minimum Position Reset Based on Indoor Air Quality

Application Note Rooftop Top Unit (RTU) Controller

19

Modes of Operation Use Table 11 to determine the modes of operation for the Damper control function.

Table 11: Modes of Operation – Damper Mode Description Close The mixed air damper is closed. Open The mixed air damper is opened. Min OA The mixed air damper is opened to minimum position. Control Econ The mixed air damper is positioned between the damper

minimum position and 100% open to control the zone temperature.

Control Min The mixed air damper is positioned between 0% open and damper minimum position to control the zone temperature.

Control Econ Limit The mixed air damper is positioned between the damper minimum and maximum position to control the low limit temperature.

Control Min Limit The mixed air damper is positioned between 0% open and damper minimum position to control the low limit temperature.

Table 12 displays the Damper mode selection.


Table 12: Damper Mode Selector Table (State Selection) Sequencer States Responding No Airflow Unit

Enable FanOnOff System

Mode Unocc Temp Control Effective State

Occ Temp Control State

Fan Cycling

Damper Mode Responding to Unocc Sequencer

Responding to Occ Sequencer

NOT(Normal) X X X X X X Close

Off X X X X X Close X X X Constant Close

False False

Off X X X Cycling Close True True Purge or Vent

X X X Open False

NOT (Disable) X X Close

False

Shutdown X Close Zone Damper or Primary Heat or Satisfied or Mech or DALL Heating

X Min OA

Zone Damper X Control Min Econ X Control Econ EconMech X Open DALL Econ X Control Econ Limit DALL Damper X Control Min Limit X

Normal On

On

Cool Only or Heat Only or Fan Only or Auto

Disable

X

True True

FX07 - Application Note RTU 21

Heating The RTU application supports the following heat control options:

• none

• staged heating with up to four stages

• Proportional Valve

Modes of Operation Table 13 displays the modes of operation for the Heat module.

Table 13: Modes of Operation – Heat Mode Description Off All heating devices are turned off after the stage minimum on

times expire, and the modulating heating output is commanded to 0%.

Max All heating stages are energized and the modulating heating output is commanded to 100%.

Limited Max The modulating heating output or the heating stages are commanded to the Limited Max Value. This mode is used for unoccupied heating or cooling.

Water Flush The modulating heating output is commanded to the Water Flush position.

Low OA-T Position

When the outside air temperature is less than the Low Outside Air Temperature Setpoint, the modulating heating output is commanded to the Low Outside Air Temperature position.

Instant Shutdown

The staged heating binary outputs are immediately de-energized without regard for minimum on-times.

Temperature Control

The modulating heating output or staged heating outputs are commanded to control the temperature to the effective heating setpoint.

Aux Control2 Heating stages are cycled or modulating heating output is modulated to maintain either the effective zone heating setpoint or the low-limit temperature setpoint depending on which setpoint demands the higher heating output.

Shutdown The proportional output is set to either 0% or the low outside air temperature position based on the Shutdown mode.

Table 14 displays the Heat mode selection.

22 FX07 - Application Note Rooftop Top Unit (RTU) Controller

Table 14: Heat Mode Selector Table (State Selection) Sequencer States Responding No Airflow Unit

Enable Heat Allowed

System Mode

Unocc Temp Control Effective State


Dehum Mode

Heating Mode Staged

Heat

Heating Mode

Proportional Responding to Unocc Sequencer


NOT(Normal) X X X X X X Instant Shutdown

Off

Off X X X X X Instant Shutdown

Off

False X X X X Off Shutdown Cool Only or Fan Only or Purge or Vent

X X X Off Shutdown

Water Flush

X X X Instant Shutdown

Water Flush

Econ Clg or EconMech or Mech or Idle

X X Off Off

False

Satisfied or Shutdown

X X Off Shutdown

Primary Heat or Secondary Heat

X X Limited Max Limited Max

False

Zone Damper or DALL Damper

X Max Max

Primary Heat X Main Control Main Control DALL Heating X Aux Control 2 Aux Control 2

Satisfied or Humidity Unreliable

Off Off EconMech or Mech

Dehumidify Main Control Main Control

Satisfied or Econ or DALL Econ

X Off Off

Normal

On True

Heat Only or Auto

Disable

Shutdown X Off Shutdown

True

True


Cooling The RTU application supports the following cooling control options:

• none

• staged cooling with up to Four stages

• Proportional Valve

Modes of Operation Use Table 15 to understand the modes of operation for the Cooling function.

Table 15: Modes of Operation – Cooling Mode Description Off All cooling devices are turned off, and the modulating cooling

output is commanded to 0%. Max All cooling stages are energized and the modulating cooling

output is commanded to 100%. Limited Max The modulating cooling output or the cooling stages are

commanded to the Limited Max Value. This mode is used for unoccupied heating or cooling.

Water Flush The modulating cooling output is commanded to the Water Flush position.

Low OA-T Position When the outside air temperature is less than the Low Outside Air Temperature Setpoint, the modulating cooling output is commanded to the Low Outside Air Temperature position.

Instant Shutdown The staged cooling binary outputs are immediately de-energized without regard for minimum on-times.

Temperature Control

The modulating cooling output or staged cooling outputs are commanded to control the temperature to the effective cooling setpoint.

Aux Control The modulating cooling output is commanded to control the humidity to the humidity setpoint. The heating output is commanded to control the temperature to the effective heating temperature setpoint.

Shutdown The proportional output is set to either 0% or the low outside air temperature position based on the Shutdown mode.

Mode Selection Table 16 displays the Cooling mode selection.

24 FX07 - Application Note RTU

Table 16: Mech Cooling Mode Selector (State Selection) Sequencer States Responding No Airflow Unit

Enable Mech Clg Allowed

System Mode



Dehum Mode

Cooling Mode Staged

Cooling Mode Proportional Responding

to Unocc Sequencer


NOT(Normal) X X X X X X Instant Shutdown

Off

Off X X X X X Instant Shutdown

Off

False X X X X Off Shutdown

Heat Only or Fan Only or Purge or Vent

X X X Off Shutdown

Water Flush

X X X Instant Shutdown

Water Flush

False

Econ Clg or Primary Heat or Secondary Heat or Idle

X X Off Off

EconMech or Mech

X X Limited Max Limited Max

Satisfied or Shutdown

Off Shutdown

False

Satisfied or Humidity Unreliable

Main Control Main Control EconMech or Mech

Dehumidify Aux Control Aux Control

Zone Damper or Primary Heat or Satisfied or Econ or DALL Econ or DALL Heating or DALL Damper

X Off Off

Normal

On

True

Cool Only or Auto

Disable

Shutdown X Off Shutdown

True

True


Supply Fan The RTU application supports a single speed, constant capacity supply fan.

Modes of Operation Table 17 displays the modes of operation for the Supply Fan function.

Table 17: Modes of Operation – Supply Fan Mode Description Off The fan is off. On The fan is on.

Mode Selection Use Table 18 to understand the Supply Fan mode selection.

Occupied Fan Control You can configure the Supply Fan to either run continuously or to turn off when the unit is in an occupied mode and satisfied (no heating or cooling is required). When the configuration parameter Occupied Fan Control is set to Constant Fan, the fan continues to run when no heating or cooling is required. Setting the parameter to Cycle Fan results in the fan turning off during satisfied periods.


Table 18: Supply Fan Mode Selector (State Selection) Sequencer States No Airflow Unit

Enable System Mode



Fan Cycling

Supply Fan Mode

NOT(Normal) X X X X X Off

Off X X X X Off Purge or Vent

X X X On

Satisfied or Idle or Shutdown

X X Off

Shutdown X Off Constant On Satisfied Cycling Off

Normal On

Cool Only or Heat Only or Fan Only or Water Flush or Auto

Econ Clg or EconMech or Mech or Primary Heat or Secondary Heat or Disable Zone Damper or

Primary Heat or Econ or EconMech or Mech or DALL Econ or DALL Heating or DALL Damper

X On


Aux Exhaust Fan The RTU application supports a single speed, constant capacity exhaust fan. This application is usually used for restroom exhaust or other small exhaust fans.

Modes of Operation Table 19 displays the modes of operation for the Exhaust Fan function.

Table 19: Modes of Operation – Exhaust Fan Mode Description None No exhaust fan is controlled. SF Status The exhaust binary output turns on when the supply fan status

is on and turns off when the supply fan status is off. SF Command

The exhaust binary output turns on when the supply fan command is on and turns off when the supply fan command is off.

Power Exhaust Fan The RTU application also supports power exhaust fan. This application is usually physically mounted in the Rooftop Unit.

Modes of Operation Table 19 displays the modes of operation for the Power Exhaust Fan function.

Table 20: Modes of Operation – Power Exhaust Fan Mode Description None No exhaust fan is controlled. On-Off by OA Damper Feeback

The power exhaust binary output turns on when the OA damper feedback exceeds a percentage setpoint. The power exhaust turns off when the OA damper feedback is less than the setpoint minus the setpoint differential.

On-Off by OA Damper Command

The power exhaust binary output turns on when the OA damper command exceeds a percentage setpoint. The power exhaust turns off when the OA damper command is less than the setpoint minus the setpoint differential.

Modulated by Bldg Static Pressure

The power exhaust fan VSD is modulated in order to maintain the building static pressure setpoint.

Modulated by OA Damper Feeback

The power exhaust fan VSD is modulated proportionally by the OA damper feedback signal.

Rooftop Top Unit (RTU) Controller Application Note 28

PID Tuning If tuning is required, you must manually tune the PIDs in this application. All of the default temperature control PID tuning parameters are based on a zone temperature control process.

Use Table 21 as a conservative starting point if you are manually turning the PID. Further manual turning may be required.

Table 21: PID Tuning Parameters Integral Time (Seconds)

Proportional Band (Diff Deg. F)

Saturation Time (Seconds)

890 7.2°F (4°C) 180

Integral Time The time required by the integral action to contribute the same amount to the controller output as the proportional term for a constant error.

Proportional Band The amount of change in the process variable that produces a full range change (High Limit - Low Limit) in the present value. The proportional band must be greater than zero.

Saturation Time The saturation time is amount of time required for the PID status to change to saturated high after the PID reaches a maximum physical limit. The amount of time the present value must be at the low or high limit for the saturation status to be set to either Low or High.


FX Builder Application Wizard Concepts FX Builder is a software tool that allows you to create and export application software for FX Field Controllers. FX Builder includes an Application Wizard, which allows you to easily create application software from predefined templates. These application templates are factory designed and tested, and include several configuration options for you to choose from.

The RTU application template includes predefined features and functionality that you can select, enable/disable, and adjust with the Application Wizard. Examples of configuration options include:

• heating and cooling configuration

• choice of room sensor type

• configurable control strategies

• adjustable setpoints, parameters, and tuning parameters

• selectable user interface and supervisory interface

• configurable input/output types and channel assignments

The following sections provide detailed procedures on how to use FX Builder’s Application Wizard to install and select the RTU application template and to configure and export a unique RTU application file.

Installing the RTU Application Package To install the RTU Application Package:

1. Obtain the RTU Application Package and save it to your local hard disk.

2. Launch FX Builder.

3. Click Settings > Application Wizard Preferences (Figure 12).


Figure 12: Settings > Application Wizard Preferences Menu

The Application Wizard Preferences dialog box appears (Figure 13).

Figure 13: Application Wizard Preferences Dialog Box without Packages

Installed

4. Under File Preferences, select the documents you want to generate. Documentation types you can select include:

• Hardware I/O Documentation

• Protocol Documentation

• Network Protocol Files (N2 Print Files, LON Resource files)


Note: The default is to generate all three types of documentation. We highly recommend you keep the preferences at these defaults, so that all documentation types are generated.

5. If desired, change the File Location to where the generated files are exported.

6. Click Install… and navigate to the location of the RTU Application Package as performed in Step 1.

7. Select the RTU Application Package (.dbe file) and click Open (Figure 14).

Figure 14: Select Package Dialog Box

The Application Package installs and appears in the Application Wizard Preferences dialog box (Figure 15).


Figure 15: Application Wizard Preferences Dialog Box with RTU Package

Installed

8. Click OK.


Selecting the RTU Application Template To select the RTU Application Template:

1. Open FX Builder.

2. Click File > Application Wizard (Figure 16). The Select an Application Template Window appears.

Figure 16: File > Application Wizard Menu

3. On the left side of the window, open the Terminal Units folder and select the RTU Application Template (Figure 17).


Figure 17: Selecting the RTU Application Template

4. Click Next. A status bar appears while the selected application template and plug-ins are loaded into FX Builder (Figure 18).

Figure 18: Loading Application Status Bar

The Configure plug-in appears when the application is loaded (Figure 19).


Configuring the RTU Application The Configure dialog contains tabbed views of the control strategy configuration options, setpoints and parameters that you can select, and adjust in the RTU application.

Configuring the Control Strategy To configure the control strategy:

1. Click the Configuration tab. The RTU application’s control strategy configuration options and default values appear (Figure 19).

Figure 19: RTU Configuration Plug-in

2. Modify the configuration settings as needed. Use Table 22 as a reference.

Table 22: RTU Configuration Options Configuration Setting Description Options/Adjustment

Range Zone Sensor Selection Zone Sensor Select the type of thermostat. TM-2100

NRM Cooling Type Select the type of cooling. None

One Stage Two Stages Three Stages Four Stages Proportional Valve



Configuration Setting (Cont.)

Description Options/Adjustment Range

Heating Type Select the type of heating. None One Stage Two Stages Three Stages Four Stages Proportional Valve

Coil Protection Unoccupied Cooling Valve Control

Select the valve control strategy during unoccupied if OAT is low or if ZNT is unreliable


Unoccupied Heating Valve Control

Select the valve control strategy during unoccupied if OAT is low or if ZNT is unreliable


Economizer Enable/Disable Enable or disable Disable

Enable Switchover Type Select the switchover type Dry Bulb

Differential Temperature Single Enthalpy Differential Enthalpy

IAQ CO2 Override Indoor Air Quality (IAQ) override

Disable Enable

Sensor Location Select sensor location (used for graphic generation)

Zone Return

Controlling Temperature Sensor Location

Select controlling sensor location (NRM Only)

Zone Return

Fan Control Fan Cycle Occd

Select how to control fan during occupied mode

Constant (keep fan constantly on) Cycle (cycle fan with heating and cooling)

UnOcc Control Do you want to enable unoccupied control?

No Yes

Exhaust Fan Aux Exh Ctrl Type Select Aux exhaust fan

control type None SF Status SF Command





Power Exh Ctrl Type Select Power exhaust fan control type.

None On-Off by OA Damper Feedback On-Off by OA Damper Command Modulating by Bldg Static Pressure Modulating by OA Damper Feedback

Alarm Selection SF Proof Do you have a proof of supply

flow switch? Yes No

Filter Do you have a switch to indicate dirty filter?

No Yes

Miscellaneous Loss of Airflow Select the type of reset

required after shutdown occurs due to loss of airflow.

Manual reset Automatic reset

Power Fail Restart Enable/disable the Power Fail Restart feature.

Yes No

Exhaust Fan Status Points Aux Exh Status Required Do you want an Aux exhaust

fan status BI added to the application.

No Yes

Power Exh Status Required Do you want an Power exhaust fan status BI added to the application.

No Yes

RTU Supply Fan Proof for PEF

Do you want the application to verify RTU supply fan status before allowing Power Aux fan to start.

No Yes

Network Room Module (NRM) The NRM Config tab appears only if you selected the NRM as the Zone Sensor configuration option. The NRM Config tab contains the options and setpoints that you can select and adjust for the NRM in the RTU application.

To configure the NRM:

1. Click the NRM Config tab. The RTU application’s NRM configuration options and default values appear (Figure 20).


Figure 20: NRM Config Plug-in

2. Modify the NRM configuration options and settings as needed. Use Table 23 as a reference.

Table 23: NRM Configuration Options Configuration Setting


Setpoint Adjust Type Remote Setpoint Select the type of remote

setpoint adjustment. Setpoint Adjust Warmer/Cooler Adjust

Display Units Select the units of measure to

be displayed at the NRM. US (°F) SI (°C)

Default View Select the default view of the LCD.

Show Setpoint Show Temperature

Backlight Time Enter the amount of time the LCD backlight stays lit.

0 to 60 seconds

UnOcc Blink Enable/disable LCD blinking when in unoccupied mode.

No Display Blink Display Blink





Maint Icon Enable/disable the displaying of the maintenance icon (wrench). When enabled, the wrench appears if the following occurs: • unreliable space

temperature • no communication with

controller

Off Enable

Temp Occ Ctrl Enable/disable temporary occupancy control. When enabled, rotating the adjustment dial during the unoccupied mode initiates a period of temporary occupancy.

No (disabled) Yes (enabled

Temp Occ Time Enter the temporary occupancy time.

0 to 9,999 seconds

Setpoint Default Setpoint Enter the setpoint to be used

upon recovery from a power failure.

55.0 to 85.0°F (12.8 to 29.4°C)

Low Limit Enter the minimum amount of setpoint adjustment allowed.

55.0 to 85.0°F (12.8 to 29.4°C)

High Limit Enter the maximum amount of setpoint adjustment allowed.

55.0 to 85.0°F (12.8 to 29.4°C)

W/C Setpoint Low Limit

Enter the lowest W/C adjustment allowed.

-5 to 0.0°F (-3 to 0°C)

W/C Setpoint High Limit

Enter the highest W/C adjustment allowed.

0.0 to 5.0°F (0 to 3.0°C)

Adjusting Setpoints The Setpoints tab contains the setpoints that you can adjust in the RTU application.

To adjust setpoints:

1. Click the Setpoints tab. The RTU application’s setpoints and their default values appear (Figure 21).


Figure 21: Setpoints Plug-in

2. Adjust the setpoints as needed. Use Table 24 as a reference.

Table 24: RTU Setpoints Setpoint Type Description Adjustment Range Zone Setpoints Occ Clg Setpt Enter the occupied cooling

setpoint. 60 to 80°F (15.6 to 26.7°C)

SB Clg Setpt Enter the standby cooling setpoint.

60 to 100°F (15.6 to 37.8°C)

UnOcc Clg Setpt Enter the unoccupied cooling setpoint.

60 to 100°F (15.6 to 37.8°C)

Occ Htg Setpt Enter the occupied heating setpoint.

60 to 80°F (15.6 to 26.7°C)

SB Htg Setpoint Enter the standby heating setpoint.

55 to 80°F (12.8 to 26.7°C)

UnOcc Htg Setpt Enter the unoccupied heating setpoint.

55 to 80°F (12.8 to 26.7°C)

Lockouts - OAT Clg Lockout Enter the outside air

temperature lockout for cooling.

0 to 100°F (-17.8 to 37.8°C)

Htg Lockout Enter the outside air temperature lockout for heating.

0 to 100°F (-17.8 to 37.8°C)

Low OAT Setpt Enter the outside air low temperature setpoint.

34 to 45°F (1.1 to 7.2°C)

Humidity Control Dehumidification Set the dehumidification. 0 to 100% Economizer Minimum Position Set the minimum position. 0 to 100% DALL Setup Set the discharge air low limit. 35 to 60°F (1.7 to 15.6°C) DryBulb Setpt Set the dry bulb setpoint. 35 to 60°F (1.7 to 15.6°C) Continued on next page . . .


Setpoint Type (Cont.)

Description Adjustment Range

Temp Differential Set the temperature differential.

32 to 82°F (0 to 27.8°C)

CO2 Setpt Enter the CO2 setpoint. 800 ppm CO2 High Level Enter the CO2 high level. Power Exhaust Fan Power Exh Fan Setpt

Enter the OA damper setpoint to turn on the Power exhaust fan.

0 to 100%

Power Exh Fan Diff Enter the OA damper differential. Fan turns off when OA damper feedback is < (SP minus diff).

0 to 100%

Static Pressure Setpoints Bldg Static Pressure Enter the building static

pressure setpoint. 0 to 0.1 in. w.c.

Adjusting Parameters The Parameters tab contains the system parameters that you can adjust in the RTU application. To adjust parameters:

1. Click Parameters. The RTU system parameters and their default values appear (Figure 22).

Figure 22: Parameters Tab

Adjust the system parameters as needed. Use Table 25 as a reference.


Table 25: RTU System Parameters Parameter Type Description Adjustment Range System Power Fail Restart Enter the maximum power fail

restart time. 0 to 180 seconds

Airflow Start Delay Enter the maximum amount of time allowed for the fan to prove after it has been commanded.

0 to 60 seconds

Airflow Debounce Enter the amount of time a temporary loss of airflow is ignored before action is taken.

0 to 120 seconds

Cooling Clg Lim Max Pos Enter the cooling limited maximum

position. 0 to 100% open

Clg Flush Pos Enter the cooling flush position. 0 to 100% open Clg Low OAT Pos Enter the cooling low outside air

temperature position. 0 to 100% open

Heating Htg Lim Max Pos Enter the heating limited maximum

position. 0 to 100% open

Htg Flush Pos Enter the heating flush position. 0 to 100% open Htg Low OAT Pos Enter the heating low outside air

temperature position. 0 to 100% open

Static Pressure Building Static Pressure Sensor Low Range

Enter the building static pressure sensor low range.

-0.30 to 0.0 in. w.c.

Building Static Pressure Sensor High Range

Enter the building static pressure sensor high range.

0.0 to 0.3 in. w.c.

Fan Control SF Off Delay Enter the fan off delay time 0 to 120 seconds Power EF Min On Time

Enter the power exhaust fan on delay time.

0 to 120 seconds

Power Exhaust Fan Control Power EF Min Off Time

Enter the power exhaust fan off delay time

0 to 120 seconds

OA Damper Feedback Low Setpoint

Enter the OA damper feedback low setpoint; this setpoint corresponds to the power exhaust fan low speed setpoint.

0 to 100%

OA Damper Feedback High Setpoint

Enter the OA damper feedback high setpoint; this setpoint corresponds to the power exhaust fan high speed setpoint.

0 to 100%

Power Aux Fan Low Speed Setpoint

Enter the power exhaust fan low speed setpoint; this setpoint corresponds to the OA damper feedback low setpoint.

0 to 100%



Parameter Type (Cont.)

Description Adjustment Range

Power Aux Fan High Speed Setpoint

Enter the power exhaust fan high speed setpoint; this setpoint corresponds to the OA damper feedback high setpoint.

0 to 100%

Miscellaneous Fast Seq Enable Enable/disable the fast sequence

feature. When enabled, the application switches between Heat, Satisfied, and Cool states faster (does not wait for saturation times to expire). This feature is typically enabled only during commissioning, to help speed up the process.

Disable Enable

Fast Seq Threshold Enter the amount of setpoint change needed to switch states during the Fast Sequence mode.

0 to 10°F (0 to 5.6°C)

Adjusting Proportional plus Integral plus Derivative (PID) Parameters The PID Parameters tab contains the tuning parameters (proportional bands, integration times, and saturation times) that you can adjust in the RTU application.

To adjust PID parameters:

1. Click PID Parameters. The RTU application’s PID Parameters and default values appear (Figure 23).

Figure 23: PID Parameters Tab

2. Modify the PID Parameters as needed. Use Table 26 as a reference:


Table 26: RTU PID Parameters Parameter Type Description Adjustment Range Cooling Clg PB Enter the cooling proportional

band. 0 to 100°F (0 to 55.6°C)

Clg Iterm Enter the cooling integration time.

0 to 6,553 seconds

Clg Sat Time Enter the cooling saturation time.

0 to 6,553 seconds

Heating Htg PB Enter the heating proportional

band. 0 to 100°F (0 to 55.6°C)

Htg ITerm Enter the heating integration time.

0 to 6,553 seconds

Htg Sat Time Enter the heating saturation time.

0 to 6,553 seconds

Humidity Control Dehum PB Enter the dehumidification

proportional band. 0 to 100%

Dehum Iterm Enter the dehumidification integration time.

0 to 6,553 seconds

Dehum Sat Time Enter the dehumidification saturation time.

0 to 6,553 seconds

Static Pressure Building Static PB Enter the building static

pressure control proportional band.

0 to 99,999 in. wc.

Building Static Iterm

Enter the building static pressure control integration time.

0 to 6,553 seconds


Configuring the Internal Occupancy Schedule The Schedule and Calendar tabs provide you the ability to configure the internal occupancy schedule.

Note: Using the internal occupancy schedule is optional. An external, network schedule and calendar may be used as an alternative.

To configure the internal occupancy schedule:

1. Click on Schedule tab. See Figure 24.

2. Configure the Weekly Schedule. Click and drag to select the desired occupied (on) period for a day of the week. Right-click in the selected time period and selected Status > On. Repeat for the other occupied time periods and other desired days of the week. When finished, click Apply.

Figure 24: RTU Weekly Schedule

3. Click on the Calendar tab. Configure the Holiday Calendar. Click on the desired dates and right-click to assign the status (holiday or alternate).

4. When finished, click on Apply to set the Calendar.


Figure 25: RTU Calendar

Viewing the Configuration Summary The Config Summary tab provides a summary for all configuration settings and setpoint and parameter adjustments made during the configuration session.

To view the configuration summary:

1. Click Config Summary. The Configuration Summary report appears (Figure 26).

2. View the summary here or, to save the summary to a document, right-click on the summary information and select Copy to clipboard, and then paste it into a document.

Figure 26: Configuration Summary Window


Selecting the User Interface(s) and Supervisor Interface The Choose Interfaces (Figure 27) dialog box provides User Interface and Supervisor Interface options. If you want to return to the Configuration session to select different configuration options or to change setpoints and parameters, click Previous.

To select the user interface and supervisor interface:

1. Choose the desired User Interface.

2. Choose the desired Network Protocol.

Figure 27: Choose Interfaces Dialog Box

3. Click Next to select the FX controller. The Select Target Device dialog box appears (Figure 28).


Selecting the Target Device The Select Target Devices dialog box provides options for the target controller based on the configuration settings you selected.

To select the target device:

1. Select a device and click Next. The Configure Hardware I/O dialog box appears (Figure 28).

Figure 28: Select Target Device Dialog Box - Approved Devices Tab

If the device you want to use does not appear in the list of approved devices, click the Rejected Devices tab and view the Reason for the rejection (Figure 29). You can also click the Exclusion Details button for more details.

Then, based on the rejection reasons, you can click Previous to return to the configuration plug-ins and edit the appropriate configuration(s) to configure the device so it is approved.

Figure 29: Rejected Devices Tab


Configuring the Hardware I/Os The Configure Hardware I/O dialog box is organized into tabs based on I/O type (Analog Inputs, Analog Outputs, and Digital Outputs).

To configure the hardware I/Os:

1. Click on the Analog Inputs tab. Change the Sensor Type and Channel Number for the desired objects (Figure 30).

Figure 30: Configure Hardware I/O Window—Analog Inputs Tab

2. Click on the Analog Outputs tab. Change the Actuator Type and Channel Number for the desired object.

Figure 31: Configure Hardware I/O Window—Analog Outputs Tab

3. Click on the Digital Inputs tab. Change the Channel Number for the desired object.


Figure 32: Configure Hardware I/O Window—Digital Inputs Tab

4. Click on the Digital Outputs tab. Change the Channel Number for the desired object.

Figure 33: Configure Hardware I/O Window—Digital Outputs Tab

Note: Each Channel Number must be unique. The Status alerts you with a yellow alert symbol if multiple channels are assigned the same number. Correct the Channel Number so each channel has a unique number and all status symbols are green.


Figure 34: Channel Number Status Alert

5. Click Next. The Generate Application dialog box appears (Figure 35).

Generating the Application Files and Documentation This is the final step in creating and generating the Application files and documentation (Figure 35).

To generate the application files and documentation:

1. Edit or enter a Name for the Application.

2. Enter the name of the Application designer in the Prepared By field (or department name, employee ID, other relevant information to the preparer), if desired.

3. Enter information relevant to the Application, design, notes for others who may use the Application in the future, or other information in the Description field, if desired.

4. Navigate to the directory folder where you want the application files to be exported (if different than the Application File default location shown).

5. If desired, change the name of the .apd file in the Application File field, but do not change the .apd extension.

Figure 35: Generate Application Window


6. Click Finish.

The application files and documentation generates, and the Application Wizard closes. The bottom of the FX Builder window displays a status for each application object that is loaded. When all application objects load, the Generating Documentation status bar appears in the middle of the screen (Figure 36).

Figure 36: Generating Documentation Status Bar

7. Click OK when the Application Compile Completed dialog box appears (Figure 37).

Figure 37: Application Compile Completed Dialog Box

The Application and its corresponding files and documentation are now generated. The type of files generated depend on the selections made in the Application Wizard Preferences dialog box and Configuration Options plug-ins.

Viewing Generated Application and Documentation Files To view generated application and documentation files, go to the destination folder designated in the Application File field.

Reviewing an Exported Application File The Application Wizard includes a synchronization feature that allows you to match an exported application file (*.apd) to its template. This feature allows you to use the Application Wizard screens to review and/or change any of the options, settings, or selections made to an exported application file.

To use this feature:

1. Open the Application Wizard.

2. Click on Synchronize Application Template (Figure 38). The Open Application Dialog appears (Figure 39).


Figure 38: Synchronize Application Template

Figure 39: Open Application Dialog

3. Navigate to the location of your exported *.apd file, select it and click Open. The Application Wizard reappears showing if the selected application matches an installed template (Figure 40).


Figure 40: Application Template Match

4. Click Next. The Application Wizard appears, showing the actual configuration settings, setpoints, adjustment parameters, user interface selection, protocol choice, target controller selection, and I/O configurations that were originally made before the application file was exported. You can now use the Application Wizard to view and/or change these settings as desired.


FX CommPro Concepts FX CommPro is a software tool you use to perform the following functions:

• download the application file to the target controller(s)

• monitor data points

• issue overrides

• adjust unit setpoints and parameters

For detailed information on downloading and commissioning with FX CommPro, refer to the FX CommPro N2 User’s Guide (LIT-12011152) or FX CommPro BACnet User’s Guide (LIT-12011240)

User Interface Concepts The RTU application template supports a choice of two types of User Interface: the Medium User Interface (MUI) and the LCD2x4 User Interface.

Medium User Interface The MUI (Version 3) is an optional hardware accessory that consists of the following:

• 4 line by 26 character LCD

• 6 keys: up, down, left, right, Enter, and Escape

• 10 discrete status LEDs

Figure 41: Medium User Interface (MUI)

The MUI connects to the Remote Display bus of the FX Field Controller and can be mounted locally or remotely, or it can be used as a handheld tool.


Medium User Interface Capabilities The RTU application template includes a predefined MUI configuration. The MUI configuration organizes information into folders and pages which you navigate using the keypad and display.

You use the MUI to perform the following functions:

• monitor control points and system status

• adjust setpoints and unit parameters

• initiate overrides

• select the desired display units of measures

Medium User Interface Navigation Upon power up, the MUI displays the Home Page showing system information (Table 27).

Table 27: MUI Home Page Contents Display Name Description Units/Enumeration Zone Temperature

Zone temperature °F/°C

Act Clg Sp Actual cooling setpoint °F/°C Act Htg Sp Actual heating setpoint °F/°C Disch Air Temp Discharge air temperature °F/°C Outside Air Temp

Outside air temperature °F/°C

ZN/RA Humidity Zone/return air humidity % CO2 Level CO2 Level ppm Rem SP Adj Remote setpoint adjustment °F/°C W/C Adj Warmer/cooler adjustment °F/°C Sup Fan Cmd Supply fan command Off = Off

On = On Supply Fan Status

Supply fan status Off = Off On = On

Exhaust Fan Cmd

Exhaust fan command Off = Off On = On

Filter Switch Filter switch status Clean = Clean Dirty = Dirty



Display Name (Cont.)

Description Units/Enumeration

MA Damper Output

Mixed air damper output %

Unit Mode Unit mode Auto = Auto Heat = Heat Morn_Warm = Morning_Wam Cool = Cool Pre_Cool = Pre_Cool Off = Off Test = Test Emerg_Heat = Emergency Heat Fan_only = Fan_only Free_Cool = Free_Cool Ice = Ice Max_Heat = Max Heat Economy = Economy Dehumid = Dehumidification Calibrate = Calibrate Emerg_Cool = Emerg_Cool Emerg_Steam = Emerg_Steam Invalid = Invalid

In addition to the Home Page, the MUI also includes 11 folders of information, which you access from the MUI’s Main Menu.

Table 28: RTU MUI Folders Folder User Access

Level Contents

Status All Input and Output Status Config All RTU Application Configuration Settings Setpoints All Setpoints Parameters All Miscellaneous Setpoints and Parameters PID Parameters All Proportional Bands, Integration Times, and

Saturation Times Modes All Sequencer Modes and States Time All Time NRM Setup All NRM Configuration Settings Balancer All Override Points Scheduler All Schedulers Contacts All User Management


Config Folder The Config folder contains one page showing the configuration settings made during the Application Wizard session. These settings are read-only (you cannot change the RTU configuration from the MUI). See Table 29.

Table 29: MUI Config Page 1 of 2 Contents Display Name Description Units/Enumeration Clg Type Cooling type None = No cooling

One Stage = 1 stage Two Stage = 2 stages Three Stage = 3 stages Four Stage = 4 stages Prop = Proportional Valve

Htg Type Heating type None = No heating One Stage = 1 stage Two Stage = 2 stages Three Stage = 3 stages Four Stage = 4 stages Prop = Proportional Valve

Econ Enable Econonmizer enable Disable = disable Enable = enable

Econ Strategy Econonmizer strategy Dry Bulb =Dry Bulb Dual Temp = Dual Temp Single Enth=single enthalpy Diff Enth = dual enthalpy

IAQ Enable Indoor air quality control enabled Disable = disable Enable = enable

Occ Fan Control Occupied fan control type Constant = Constant fan Cycling = Cycled fan

Unocc Control Unoccupied control enabled? No = No Yes = Yes

Aux EF Ctrl Typ Aux Exhaust fan control type None = None SF Status = based on supply fan status SF Command = based on supply fan Command

Dehum Ctrl Dehumidification control Disable = Disable Enable = Enable

SF Proof Supply fan proof enabled? No = No Yes = Yes





Filter Switch Filter switch enabled? No = No Yes = Yes

Restart Type Type of reset required after loss of airflow shutdown occurs

Automatic = automatic reset Manual = manual reset

PF Restart Enable Power fail restart enabled? No = No Yes = Yes

Pwr EF Ctrl Typ Power Exhaust fan control type None = None OnOffOAD Fdbk= On /Off based on OA damper feedback OnOffOAD Cmd= On /Off based on OA damper command Mod Bldg Stat = Modulating to maintain Bldg Static Pressure Mod OAD Fdbkt = Modulating by OA Damper Feedback

Table 30: MUI Config Page 2 of 2 Contents Display Name Description Units/Enumeration Use RAT Control Used a return air temperature

sensor instead of the NRM integral sensor to control room temperature?

No Yes

Thermostat Type Type of thermostat TM-2100 NRM

Clg SD Action Valve action when low OAT shutdown occurs

Cls Vlv = go to closed position LoOATPos = go to low OAT position

Htg SD Action Valve action when low OAT shutdown occurs

Cls Vlv = go to closed position LoOATPos = go to low OAT position


NRM Setup Folder The NRM Setup folder contains one page of adjustable NRM configuration settings (Table 31).

Table 31: MUI NRM Setup Page Contents Display Name Description Units/Enumeration SP Adj Type Setpoint adjustment type Setpoint = setpoint

W/C = warmer/cooler Temp Units Units of measured displayed at the

NRM Deg C = °C Deg F = °F

Default View The default view of the LCD Setpoint = show setpoint Temp =show space temperature

Backlight Time The amount of time the LCD backlight stays lit.

seconds

UnOcc Blink Enable/disable LCD blinking when in unoccupied mode.

No = no display blink Yes = display blink

Maint Icon Enable/disable the displaying of the maintenance icon (wrench). When enabled, the wrench appears if: • unreliable space temperature • no communication with the

controller

Enable = enable Disable = disable

Temp Occupied Enable/disable temporary occupancy control? When enabled, rotating the adjustment dial during the unoccupied mode initiates a period of temporary occupancy.

No = disable Yes = enable

Temp OccTime Temp occupancy time minutes Def Abs SP The setpoint to be used upon

recovery from a power cycle °F/°C

High SP Limit The maximum amount of setpoint adjustment allowed

°F/°C

Low SP Limit The minimum amount of setpoint adjustment allowed

°F/°C

Space Temp Offset Space temperature sensor offset (used to calibrate the space temperature sensor)

°F/°C

W/C Low SP Limit The lowest W/C adjustment allowed °F/°C W/C High SP Limit The highest W/C adjustment

allowed °F/°C


Status Folder The Status folder contains four pages showing the current values/states of the inputs and outputs (Table 32, Table 33, Table 34, and Table 35).

Table 32: MUI Status Folder Analog Inputs Page Contents Display Name Description Units/Enumeration Zone Temperature Zone temperature °F/°C Outside Air Temp Outside air temperature °F/°C Disch Air Temp Discharge air temperature °F/°C Rem Sp Adj Remote setpoint adjustment °F/°C W/C Adj Warmer/cooler adjustment °F/°C ZN/RA Humidity Zone/return air humidity % CO2 Level CO2 level ppm Return Air Temp Return Air Temperature °F/°C Bldg Static Press Bldg Static Pressure in. w.c. Outside Air Hum Outside air humidity % RH OA Enthalpy Outside air enthalpy BTU/lb, kj/kg RA Enthalpy Return air enthalpy BTU/lb, kj/kg

Table 33: MUI Status Folder Digital Inputs Page Contents Display Name Description Units/Enumeration Supply Fan Status Supply fan status Off = off

On = on Filter Switch Filter switch status Clean = clean

Dirty = dirty Power EF Status Power EF Status Off = off

On = on Aux EF Status Aux EF Status Off = off

On = on

Table 34: MUI Status Folder Analog Outputs Page Contents Display Name Description Units/Enumeration MA Damper Output Mixed air damper output % open Htg Valve Output Heating Valve output % open Clg Valve Output Cooling Valve output % open Pwr EF Output Power Exhaust Fan output %


Table 35: MUI Status Folder Digital Outputs Page Contents Display Name Description Units/Enumeration Supply Fan Cmd Supply fan command Off = off

On = on Cooling 1 Cmd Cooing 1 command Off = off




On = on Heating 1 Cmd Heating 1 command Off = off




On = on Aux EF Cmd Aux Exhaust fan command Off = off

On = on Pwr EF Cmd Pwr Exhaust fan command Off = off

On = on

Setpoints Folder The Setpoints folder contains two pages of adjustable setpoints. See Table 36.

Table 36: MUI Setpoints Page 1 of 2 Contents Display Name Description Units/Enumeration Occ Clg SP Occupied cooling setpoint °F/°C Standby Clg SP Standby cooling setpoint °F/°C UnOcc Clg SP Unoccupied cooling setpoint °F/°C Occ Htg SP Occupied heating setpoint °F/°C Standby Htg SP Standby heating setpoint °F/°C UnOcc Htg SP Unoccupied heating setpoint °F/°C Clg OAT Lockout Outside air cooling lockout °F/°C Htg OAT Lockout Outside air heating lockout °F/°C Dehum SP Dehumidification setpoint % Dpr Min Pos Damper minimum position % DALL SP Discharge air low limit setpoint °F/°C OAT DB Econ SP Outdoor air temperature economizer

setpoint °F/°C

OAT/ZN Temp Diff SP Outdoor air temperature/zone differential setpoint

°F/°C


Table 37: MUI Setpoints Page 2 of 2 Contents Display Name Description Units/Enumeration CO2 Sp CO2 setpoint °F/°C CO2 High Sp CO2 high setpoint °F/°C Enthalpy Sp Single Enthalpy setpoint BTU/lb, kj/kg Enthalpy Diff Sp Diff Enthalpy setpoint BTU/lb, kj/kg Bldg Static Prs Sp Bldg Static Pressure setpoint in. w.c.

Parameters Folder The Parameters folder contains one page of adjustable miscellaneous setpoints and unit parameters. See Table 38.

Table 38: MUI Parameters Page 1 of 2 Contents Display Name Description Units/Enumeration PF Max Restart Time Maximum power fail restart time seconds Airflow Restart Time Maximum amount of time

allowed for the fan to prove after it has been commanded on

seconds

AirFlow Debounce Amount of time a temporary loss of airflow is ignored before action is taken

seconds

Clg Interstage Dly Cooling interstage delay seconds Htg Interstage Dly Heating interstage delay seconds SF Off Delay Supply fan off delay seconds PEF Min On Time Power Exhaust fan minimum on

time seconds

PEF Min Off Time Power Exhaust fan minimum off time

seconds

BSP Low Range Bldg Static pressure sensor low range

in. w.c.

BSP High Range Bldg Static pressure sensor high range

in. w.c.

Fast Seq Enable Enable/disable fast sequence. When enabled, the application switches between Heat, Satisfied, and Cool states faster (does not wait for saturation times to expire).

Disable = disable Enable = disable

Fast Seq Thresh Amount of setpoint change needed to switch states during the Fast Sequence mode

°F/°C

Low OAT Pos SP Low outside air temperature setpoint

°F/°C


Table 39: MUI Parameters Page 2 of 2 Contents Display Name Description Units/Enumeration PF Max Restart Time Maximum power fail restart time seconds Clg Lim Max Cooling limited max position % open ClgLowOAT Pos Cooling low OAT position % open Clg Flush Pos Cooling flush position % open Htg Lim Max Heating limited max position % open HtgLowOAT Pos Heating low OAT position % open Htg Flush Pos Heating flush position % open OA Dmpr Fdbk Low OA Damper Feedback Low Value % open OA Dmpr Fdbk High OA Damper Feedback High Value % open Pwr EF Low Speed Power Exh Low Speed % open Pwr EF High Speed Power Exh High Speed % open Pwr Exh Fan Dmpr Sp Power Exhaust fan OA Damper

setpoint %

Pwr Exh Fan Dmpr Diff

Power Exhaust fan OA Damper differential

%

PID Parameters Folder The PID Parameters folder contains one page of adjustable PID tuning parameters, such as proportional bands, integration times, and saturation times. See Table 40.

Table 40: MUI PID Parameters Page 1 of 2 Contents Display Name Description Units/Enumeration Clg Prop Band Cooing proportional band °F/°C Clg Int Time Cooling integration time seconds Clg Sat Time Cooling saturation time seconds Htg Prop Band Heating proportional band °F/°C Htg Int Time Heating integration time seconds Htg Sat Time Heating saturation time seconds MA Dpr Prop Band Mixed air damper proportional

band °F/°C

MA Dpr Int Time Mixed air damper integration time seconds MA Dpr Sat Time Mixed air damper saturation time seconds DALL Prop Band DALL proportional band °F/°C DALL Int Time DALL integration time seconds DALL Sat Time DALL saturation time seconds Dehum Prop Band Dehumidification proportional

band °F/°C

Dehum Int Time Dehumidification integration time seconds


Table 41: MUI PID Parameters Page 2 of 2 Contents Display Name Description Units/Enumeration Dehum Sat Time Dehumidification saturation time seconds Bldg Static PB Building static pressure control

proportional band in. w.c.

Bldg Static IT Building static pressure control integration time

seconds

Modes The Modes folder contains one page showing the current sequencer states and modes. See Table 42.

Table 42: MUI Modes Page Contents Display Name Description Units/Enumeration Airflow State Airflow state Normal = normal

Self RF = fault, self-reset Manual RF = fault, manual reset

Eff Occ Mode Effective occupancy mode Occupied = occupied Unoccupied = unoccupied Bypass = bypass Standby = standby Invalid = invalid

Econ State Economizer state Closed = close Open = open Min OA = Min OA Ramp Min OA = ramp min OA Ramp Open = Ramp open Hold = hold Ctrl Econ = Control econ Ctrl Min = Control min Ctrl EconLim = Control econ limit Ctrl MinLim = Control min limit

Clg Ctrl State Cooling control state Off = off Lim Max = limited max Wtr Flush = water flush LowOATPos = Low OAT position Instant SD = instant shutdown Main Ctrl = main control Aux Ctrl = aux control



Display Name (Cont.) Description Units/Enumeration Htg Ctrl State Heating control state Off = off

Max = max Lim Max = limited max Wtr Flush = water flush LowOATPos = Low OAT position Instant SD = instant shutdown Main Ctrl = main control Aux Ctrl2 = aux control 2

Occ State Occupied state Zone Damp = zone damper PriHeat = primary heat Satisfied = satisfied Econ = econ Econ Mech = econ mech Mech = mech DALL Econ = DALL econ DALL Heat = DALL heat DALL Damp = DALL damp Shutdown = shutdown

UnOcc State Unoccupied state Satisfied = satisfied Econ Clg = econ clg Econ Mech = econ mech Mech = mech Pri Heat = primary heat Sec Heat = secondary heat Idle = idle Shutdown = shutdown Disable = disable

Econ Allowed Economizer allowed Yes = allowed No = not allowed

Clg Allowed Cooling allowed Yes = allowed No = not allowed

Htg Allowed Heating allowed Yes = allowed No = not allowed

Unit Enable Status Unit enable status Dis = unit disabled Ena = unit enabled

Dehum State Dehumidification state Sat = satisfied Dehum =dehumidification HumUnr = humidity sensor unreliable



Display Name (Cont.) Description Units/Enumeration Temp Occ Status Temporary occupancy

status Off = off On = on

Unit Mode Unit mode Auto = Automatic Heat = Heat Morn_warm = Morn Warm Cool = cool Night_Purge = night purge Pre_cool = pre_cool Off = off Test = test Emerg_Heat = Emergency heat Fan_Only = Fan Only Free_Cool = Free Cooling Ice = Ice Max_Heat = maximum heat Economy = economy Dehumid = Dehumid Calibrate = calibrate Emerg_Cool = Emergency Cool Emerg_Steam = Emergency Steam Invalid = Invalid


Balancer Folder The Balancer folder contains one page of commandable points. See Table 43.

Table 43: MUI Balancer Page Contents Display Name Description Units/Enumeration Damper Ovrd State Damper override state Auto = auto (return to control)

Pos = go to desired position Open = go full open Close = go full closed

Damper override position % SF Ovrd State Supply fan override state Auto = auto (return to control)

Off = off On = on

Htg Vlv Ovrd State Heating valve override state

Auto = auto (return to control) Pos = go to desired position Open = go open Close = go closed

Heating valve override position

%

Cooling valve override state

Auto = auto (return to control) Pos = go to desired position Open = go open Close = go closed

Clg Vlv Ovrd State

Cooling valve override position

%

Aux EF Ovrd State Aux Exhaust fan override state

Auto = auto (return to control) Off = off On = on

Pwr EF Ovrd State Power Exhaust fan override state

Auto = auto (return to control) Off = off On = on

Power Exh Fan override state

Auto = auto (return to control) Pos = go to desired position Open = 100 % Cmd Close = 0 % Cmd

Pwr EF Out Ovrd State

Power Exh Fan override position

%

Flow Fault Reset Flow fault reset To reset the proof of flow switch shutdown, set this point to Reset and then set it back to Normal.

Normal = normal Reset = reset


Time Folder The Time folder contains one page of points allowing the user to set the time, date, time zone, and units of measure. See Table 44.

Table 44: MUI User Interface Time Page Contents Display Name Description Units/Enumeration Time Time HH:MM:SS Date Date mm/dd/yy Unit of Measure Units of measure DegC = SI

DegF = Imperial Date Format Date format dd/mm/yyyy

mm/dd/yyyy yyyy/mm/dd

Time Zone Time zone GMT = Greenwich Mean Time CET = Central Europe Time EET = Eastern Europe Time AST = Atlantic Standard Time EST = Eastern Standard Time CST = Central Standard Time MST = Mountain Standard Time PAST = Pacific Standard Time AKST = Alaska Standard Time AEST = Eastern Standard Time ACST = Central Standard Time New_Zealand = New Zealand East_Brazil = East Brazil West_Brazil = =West Brazil DST_Disabled = disabled


Schedulers Folder The Schedulers folder consists of two pages, providing an interface for users to set the local occupancy schedule.

The On Off Schedulers page provides users the ability to assign the occupied (On) and unoccupied (Off) times for Normal and Holiday days.

The Calendar page provides users the ability to identify a specific date as either Normal or Holiday.

Password Folder The Password folder provides user access management for the MUI. Access to all MUI folders is available to all users; therefore, the Password folder feature is not applicable.

MUI Status LEDs None of the MUI’s LEDs are configured to light.

Accessing a Folder in the MUI To access a folder in the MUI:

1. On the Home Page, press the ESC key. The Main Menu appears with folder names.

2. Each folder contains one or more pages of information. None of the folders are password.

3. Press the up or down arrow keys to select the desired folder.

4. Press the OK key to view the folder contents.

Note: Information displayed on the MUI can include read only data points as well as writable configuration settings, setpoints, and parameters.

Changing a Configuration Setting, Setpoint, or Parameter in the MUI To change a configuration setting, setpoint, or parameter:

1. Navigate to the page containing the desired point.

2. Press the Enter key to enter the edit mode.

3. Press the up or down arrow to select the desired point.

4. Press the Enter key again.

5. Press the up or down arrow key to toggle the entry to the desired setting or value.

6. Press the Enter key to accept or the Clear key to reject.


LCD2x4 User Interface The LCD2x4 user interface is an optional hardware accessory that comprises the following:

• 2 line by 4 character LCD

• graphical status icons

• 4 keys: up, down, clear (C), and OK

The LCD2x4 user interface is available only as an integrated part of the FX06, FX07, and FX14 packaging.

Figure 42: FX07 with Integral LCD2x4 User Interface

LCD2x4 User Interface Capabilities The RTU application template includes a predefined LCD2x4 user interface configuration. The LCD2x4 configuration organizes information into folders and pages which you navigate using the keypad and display.

You use the LCD2x4to perform the following functions:

• monitor control points and system status

• adjust setpoints and unit parameters

• initiate overrides

• select the desired display units of measures


LCD2x4 User Interface Navigation Upon power up, the LCD2x4 displays the Home Page showing system information. See Table 45 for a list of the Home Page contents.

Table 45: LCD2x4 User Interface Home Page Contents Display Name Description Units/Enumeration ZN TEMP Zone temperature °F/°C

Act HTG SP Actual heating setpoint °F/°C ACT CLG SP Actual cooling setpoint °F/°C DA TEMP Discharge air temperature °F/°C

OA TEMP Outside air temperature °F/°C ZN/RA HUMIDITY Zone return air humidity %

CO2 LEVEL CO2 level ppm

REM SP ADJ Remote setpoint adjustment °F/°C W/C ADJ Warmer/cooler adjustment °F/°C

FAN CMD Supply fan command OFF = Off ON = On

FAN STATUS Supply fan status OFF = Off ON = On

FILLER STATUS Filter switch status CLEA = Clean DIRT = Dirty

MA DPR OUT Mixed air damper output % open

CLG1 CMD Cooling Stage 1 command OFF = Off ON = On

CLG 2 CMD Cooling Stage 2 command OFF = Off ON = On



HTG 1 CMD Heating Stage 1 command OFF = Off ON = On








UNIT MODE Unit mode EHEA = Emergency Heating FONL = Fan Only FCOO = Free Cool ICE = Ice MHEA = Max Heat ECON = Economy DEHU = Duhumidification CALI = Calibrate ECOO = Emerg Cool ESTE = ESTE INVA = Invalid

Aux ExH FAN CMD

Aux Exhaust fan command OFF = Off ON = On

Pwr ExH FAN CMD

Power Exhaust fan command OFF = Off ON = On

Table 46: LCD2x4 User Interface Home Page Continued Contents Display Name Description Units/Enumeration Htg Valve Output Heating Valve Output % open

Clg Valve Output Cooling Valve Output % open

Pwr Exh Fan Output

Power Exhaust Fan Output %

In addition to the Home Page, the MUI also includes 11 pages of information which you access from the LCD2x4’s Main Menu.

Table 47: RTU LCD2x4 Folders Folder User Access Level Contents HOME Con’t All Home Page Continued

CONFIG Admin RTU Application Configuration Settings

SET[POMTS Admin Setpoints

PARAMERS Admin Miscellaneous Setpoints and Parameters

PID PARAMETERS

Admin Proportional Bands, Integration Times, and Saturation Times

MODES All Sequencer Modes and States

TIME All Time

BALANCER Admin Override points NRM SETUP All NRM Configuration Settings

FX SETUP Admin LCD2x4 Configuration Setting

SCHEDULES All Schedulers PASSWORD All User Management


Config Page The Config page is only available to Admin users. It contains configuration settings made during the Application Wizard session. These settings are read-only (you cannot change the RTU configuration from the MUI). See Table 48.

Table 48: LCD2x4 User Interface Config Page Contents Display Name Description Units/Enumeration CLG TYPE Cooling type NONE = No cooling

1STG = 1 stage 2STG = 2 stage 3STG = 3 stage 4STG = 4 stage PROP = Proportional Valve

HTG TYPE Heating type NONE = No cooling 1STG = 1 stage 2STG = 2 stage 3STG = 3 stage 4STG = 4 stage PROP = Proportional Valve

ECON ENABLE Economizer enabled ENA = Enable DIS = Disable

ECON STRATEGY Economizer switchover strategy

DRYB = dry bulb DIFT = Diff temperature SINE = Single Enthalpy DIFE = Diff Enthalpy

IAQ ENABLE Indoor Air Quality control ENA = Enable DIS = Disable

OCC FAN CTR; Occupied fan control type CNST = Constant fan CYCL = Cycled fan

UNOCC CTRL Unoccupied control enabled NO = No YES = Yes

Aux EXH FAM CTR; TU[E

Aux Exhaust fan control type NONE = None SF–S = based on supply fan status SF–C = based on supply command

DEHUM Dehumidification ENA = Enable DIS = Disable

SF PROOF Supply fan proof enabled? NO = No YES = Yes



Display Name (Cont.) Description Units/Enumeration FILLER SWITCH Filter switch enabled NO = No

YES = Yes RESTART TYPE Type of reset required after

loss of airflow shutdown occurs

AUTO = Automatic reset MANL = Manual reset

PWR FAIL RESTART ENA Power fail restart enabled NO = No YES = Yes

Pwr EXH FAM CTRL Type

Power Exhaust fan control type

None = None OnOffOAD Fdbk= On /Off based on OA damper feedback OnOffOAD Cmd= On /Off based on OA damper command Mod Bldg Stat = Modulating to maintain Bldg Static Pressure Mod OAD Fdbk = Modulating by OA Damper Feedback

Use RAT Control Used a return air temperature sensor instead of the NRM integral sensor to control room temperature

No Yes

TSTAT Type Type of thermostat TM21 NRM

Clg SD Act Valve action when low OAT shutdown occurs

Clos = go to closed position LOAP = go to low OAT position

Htg SD Act Valve action when low OAT shutdown occurs

Clos = go to closed position LOAP = go to low OAT position


NRM Setup Page The NRM Setup Page contains adjustable NRM configuration settings (Table 49).

Table 49: LCD2x4 User Interface NRM Config Page Contents Display Name Description Units/Enumeration SP ADJ TYPE Setpoint adjustment type SETP = absolute setpoint

adjust W/C = warmer/cooler adjust

NRM TEMP UNITS Units of measured displayed at the NRM

DEGC = °C DEGF = °F

NRM DEFAULT VIEW

The default view of the LCD SETP = Show setpoint TEMP =Show space temperature

NRM BACKLIGHT TIME

The amount of time the LCD backlight stays lit.

seconds

ENABLE UNOCC BLINK

Enable/disable LCD blinking when in unoccupied mode

NO = No display blink YES = Display blink

MAINT ICON ENA Enable/disable the displaying of the maintenance icon (wrench). When enabled, the wrench appears if: • unreliable space temperature • no communication with the

controller

ENA = Enable DIS = Disable

Enable temp oCC Enable/disable temporary occupancy control. When enabled, rotating the adjustment dial during the unoccupied mode initiates a period of temporary occupancy.

NO = Disable YES = Enable

Temp occ time Temporary occupancy time minutes Default nrm abs sp

The setpoint to be used upon recovery from a power cycle

°F/°C

High setpoint limit

The maximum amount of setpoint adjustment allowed

°F/°C

Low setpoint limit

The minimum amount of setpoint adjustment allowed

°F/°C

Space temp offset

Space temperature sensor offset (used to calibrate the space temperature sensor)

°F/°C

W/C Low SP Limit

The lowest W/C adjustment allowed

°F/°C

W/C High SP Limit

The highest W/C adjustment allowed

°F/°C


FX Setup Page The FX Setup page is only available to Admin users. It contains configuration settings for the LCD2x4 (Table 50).

Table 50: LCD2x4 User Interface FX Setup Page Contents Display Name Description Units/Enumeration Display units Units of measure displayed on

the LCD2x4 DEGF = °F DEGC = °C

Lcd contrast Contrast setting for the LCD2x4 LOW = Low MED = Medium HIGH = High

Backlight time min

Backlight time for the LCD2x4 OFF = Always off 2 = 2 minutes 10 = 10 minutes 20 = 20 minutes ON = Always on

Default color Default backlight color for the LCD2x4

BLUE = Blue RED = Red

Setpoints Page The Setpoints page is only available to Admin users. It contains adjustable setpoints. See Table 51.

Table 51: LCD2x4 User Interface Setpoints Page Contents Display Name Description Units/Enumeration Occ clg sp Occupied cooling setpoint °F/°C

Sb clg sp Standby cooling setpoint °F/°C Unocc clg sp Unoccupied cooling setpoint °F/°C

Occ htg sp Occupied heating setpoint °F/°C

Sb htg sp Standby heating setpoint °F/°C Unocc htg sp Unoccupied heating setpoint °F/°C

Clg dat lockout sp Outside air cooling lockout °F/°C

Htg oat lockout sp Outside air heating lockout °F/°C Htg oat lockout sp Outside air heating lockout °F/°C

DEHUM SP Dehumidification setpoint % RH

DPR MIN POS Damper minimum position % open DALL SP Discharge air low limit setpoint °F/°C OAT DRYBULG ECON SP

Economizer dry bulb setpoint °F/°C

OA/ZN TEMP DIFF SP Economizer differential temperature setpoint

°F/°C

CO2 SP CO2 level setpoint ppm

CO2 HIGH SP CO2 level high setpoint ppm EXH FAN SP Exhaust fan setpoint °F/°C Continued on next page . . .


Display Name (Cont.) Description Units/Enumeration EXH FAN DIFF Exhaust fan differential °F/°C

Enthalpy Sp Single Enthalpy Setpoint BTU/lb, kj/kg Enthalpy Diff Sp Diff Enthalpy Setpoint BTU/lb, kj/kg

WC Adjust Range Warmer/Cooler Adjust Range (TM-2100)

°F/°C

Parameters Page The Parameters folder is only available to Admin users. It contains one page of adjustable miscellaneous setpoints and unit parameters. See Table 52.

Table 52: LCD2x4 User Interface Parameters Page Contents Display Name Description Units/

EnumerationPf fan restart time

Maximum power fail restart time seconds

Airflow start delay

Maximum amount of time allowed for the fan to prove after it has been commanded on

seconds

Airflow debounce delay

Amount of time a temporary loss of airflow is ignored before action is taken

seconds

Clg interstage delay

Cooling interstage delay seconds

Htg interstage delay

Heating interstage delay seconds

Sf off delay Supply fan off delay seconds

PEf min on time Power Exhaust fan minimum on time seconds

PEf min off time Power Exhaust fan minimum off time seconds

BSP Low Range Bldg Static pressure sensor low range in. w.c.

BSP High Range Bldg Static pressure sensor high range in. w.c. Fast sequence Enable/disable fast sequence. When

enabled, the application switches between Heat, Satisfied, and Cool states faster (does not wait for saturation times to expire).

DIS = disable ENA = disable

Fast seq threshold

Amount of setpoint change needed to switch states during the Fast Sequence mode

°F/°C

Low OAT Pos SP Low outside air temperature setpoint °F/°C

Clg Lim Max Cooling limited max position % open ClgLowOAT Pos Cooling low OAT position % open

Clg Flush Pos Cooling flush position % open Htg Lim Max Heating limited max position % open

HtgLowOAT Pos Heating low OAT position % open

Htg Flush Pos Heating flush position % open OAD Feedback Low OA Damper Feedback Low Value % open

OAD Feedback High OA Damper Feedback High Value % open


PID Parameters Page The PID Parameters page is available only to Admin users. It contains adjustable PID tuning parameters, such as proportional bands, integration times, and saturation times. See Table 53.

Table 53: LCD2x4 User Interface PID Parameters Page Contents Display Name Description Units/Enumeration Clg prop band Cooing proportional band °F/°C

Clg int time Cooling integration time seconds Clg sat time Cooling saturation time seconds

Htg prop band Heating proportional band °F/°C

Htg int time Heating integration time seconds Htg sat time Heating saturation time seconds

Ma dpr prop band Mixed air damper proportional band

°F/°C

Me dpr int time Mixed air damper integration time seconds Ma dpr sat time Mixed air damper saturation time seconds

Dall prop band DALL proportional band °F/°C

Dall int time DALL integration time seconds Dall sat time DALL saturation time seconds

Dehum prop band Dehumidification proportional band

°F/°C

Dehum int time Dehumidification integration time seconds Dehum sat time Dehumidification saturation time seconds


Modes The Modes page shows the current sequencer states and modes. See Table 54.

Table 54: LCD2x4 User Interface PID Parameters Page Contents Display Name Description Units/Enumeration Airflow state Airflow state NORM = Normal

SRF = Fault, self-reset MANU = Manual reset

Occ mode Occupied mode OCCD = Occupied UNOC = Unoccupied BYPA = Bypass STAN = Standby INVA = Invalid

Econ state Economizer state CLOSE = Close OPEN = Open MNOA = Ramp min OA ROPN = Ramp open HOLD = Hold CNEC = Control econ CNMV = Control min CECL = Control econ limit CNML = Control min limit

Clg Mode Cooling mode OFF = Off LMAX = Limited max WATR = Water Flush INSD = Instant shutdown MAIN = Main control AUX1 = Aux control 1 SHUT = Shutdown

HTG Mode Heating mode OFF = Off MAX = Max LMAX = Limited max WATR = Water Flush INSD = Instant shutdown MAIN = Main control AUX2 = Aux control 2 SHUT = Shutdown



Display Name (Cont.) Description Units/Enumeration Occ state Occupied state ZONE = Zone damper

PRIM = Primary heat SATI = Satisfied ECON = Econ ECNM = Econ mech CLG = Mech DECN = DALL econ LLHT = DALL heading LLDM = DALL damper SHUT = Shutdown

Unocc state Unoccupied state SATI = Satisfied ECNC = Econ clg ECNM = Econ mech CLG = Mech HTG = Primary heat SECH = Secondary heat IDLE = Idle SHUT = Shutdown DISA = Disable

Econ allowed Economizer allowed YES = Allowed NO = Not allowed

Clg allowed Cooling allowed YES = Allowed NO = Not allowed

Htg allowed Heating allowed YES = Allowed NO = Not allowed

Unit enable status

Unit enable status DIS = Unit disabled ENA = Unit enabled

Clg control state Cooling control state Off = off Lim Max = limited max Wtr Flush = water flush LowOATPos = Low OAT position Instant SD = instant shutdown Main Ctrl = main control Aux Ctrl = aux control

Htg control state Heating control state Off = off Max = max Lim Max = limited max Wtr Flush = water flush LowOATPos = Low OAT position Instant SD = instant shutdown Main Ctrl = main control Aux Ctrl2 = aux control 2



Display Name (Cont.) Description Units/Enumeration Dehum state Dehumidification state SATI = Satisfied

DHUM = Dehumidify HUNR = Humidity unreliable

Temp occ status Temp occupancy status OFF = Off ON = On

Balancer Page The Balancer page is only available to Admin users. It contains overrides useful for air and water balancing, troubleshooting, and commissioning. See Table 55.

Table 55: LCD2x4 User Interface Balancer Page Contents Display Name Description Units/EnumerationDamper ovrd state Damper override state AUTO = Auto

POS = Position OPEN = Open CLOS = On

Damper ovrd pos Damper override position % Supply fan ovrd State

Supply fan override state AUTO = Auto ON = On OFF = Off

Aux Exh fan ovrd STATE

Aux Exhaust fan override state ON = On OFF = Off AUTO = Auto

Pwr Exh fan ovrd STATE

Power Exhaust fan override state ON = On OFF = Off AUTO = Auto

Pwr Exh fan Out STATE

Power Exhaust fan output state AUTO = Auto POS = Position OPEN = 100 % Cmd CLOS = 0% Cmd

Pwr Exh fan Ovrd POS

Power Exhaust fan Ovrd Pos %

Htg Vlv Ovrd State

Heating valve override state Auto = auto (return to control) Pos = go to desired position Open = go open Clos = go closed

Heating valve override position % Continued on next page . . .


Display Name (Cont.) Description Units/Enumeration Cooling valve override state Auto = auto (return to

control) Pos = go to desired position Open = go open Clos = go closed

Clg Vlv Ovrd State

Cooling valve override position % Flow fault reset Flow fault reset

To reset the proof of flow switch shutdown, set this point to Reset and then set it back to Normal.

NORM = Normal RST = Reset

Time Page The Time page contains the time, date, time zone, and units of measure. See Table 56.

Table 56: LCD2x4 User Interface Time Page Contents Display Name Description Units/Enumeration hour Hour 0-23

minute Minute 0-59

month Month 1-12

day Day 1-31 year Year 2000-2999

dayweek Day of the week 0 = Sunday 1 = Monday 2 = Tuesday 3 = Wednesday 4 = Thursday 5 = Friday 6 = Saturday



Display Name (Cont.) Description Units/Enumeration Time zone

Time zone GMT = Greenwich Mean Time CET = Central Europe Time EET = Eastern Europe Time AST = Atlantic Standard Time EST = Eastern Standard Time CST = Central Standard Time MST = Mountain Standard Time PAST = Pacific Standard Time AKST = Alaska Standard Time AEST = Eastern Standard Time ACST = Central Standard Time NEWZ = New Zealand EBRA = East Brazil WBRA = =West Brazil DDIS = disabled


Schedulers Page The Schedulers page provides an interface for users to set the local occupancy schedule.

Password Page The Password page provides user access management for the MUI. Access to certain pages is restricted to specific user types. Two default users are defined: All and Admin. See Table 57.

Table 57: LCD2x4 User Interface User Passwords and Access Rights User Password Accessible Pages All None—Log on is not required Home Page

Home Page Con’t Modes Time Password NRM Setup Schedulers Events

Admin 3333 Home Page Config Setpoints Parameters PID Parameters Modes Time Password Balancer NRM Setup FX Setup Schedulers

Events Page No events are configured.

Graphical Status Icons None of the LCD2x4 user interface graphical status icons are configured to light.


Accessing a Page in the LCD2x4 UI To access a page in the LCD2x4 UI:

1. On the Home Page, press the Clear (C) key. The Main Menu appears with page names.

2. Press the up or down arrow keys to select the desired page. Note: some pages require Admin logon.

3. Press the OK key to view the page contents. Use the up and down arrows to scroll through the points.

Note: Information displayed on the LCD2x4 UI can include read only data points as well as writable configuration settings, setpoints, and parameters.

Changing a Configuration Setting, Setpoint, or Parameter in the LCD2x4 UI To change a configuration setting, setpoint, or parameter:

1. Navigate to the page containing the desired point.

2. Use the Up and Down arrows to display the desired point to change.

3. Press the Enter key to enter the edit mode. The point’s setting/value blinks while in the edit mode.

4. Press the up or down arrow to toggle the entry to the desired setting or value.

5. Press the Enter key to accept the change or the Clear (C) key to reject it.

Supervisor Interface The RTU application template contains predefined mappings between the application points and N2 points, LONWORKS® network variables, and BACnet® objects. After you select the protocol type in the Application Wizard, the corresponding network profile is added to the RTU application file.

The actual network profile depends on which configuration settings were selected in the Application Wizard. The Protocol Documentation and Network Resource Files generated by the Application Wizard provide you with details about the actual network profile. Make sure that you make the appropriate selections in the Application Wizard Preferences dialog, or else the desired files do not generate.

• If the Generate Protocol Documentation option was selected in the Application Wizard Preferences dialog, then the network documentation generates at the end of the Application Wizard session.

Application Note Rooftop Top Unit (RTU) Controller

87

• If the Generate Network Protocol Files option was selected, then the N2 Print files (*.prn) or LONWORKS network resource files (*.xif, *.typ, *.enu, *.ftp, *.typ) are generated at the end of the Application Wizard session.

Note: BACnet integration does not require resource files.

Building Efficiency 507 E. Michigan Street, Milwaukee, WI 53202

Metasys® and Johnson Controls® are registered trademarks of Johnson Controls, Inc. All other marks herein are the marks of their respective owners. © 2009 Johnson Controls, Inc.

facility explorer rooftop top unit (rtu) controller

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