hart interfcae solns

7/31/2019 Hart Interfcae Solns

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ELCON INSTRUMENTSI/O I n t e r f a ce, I n t r i n s i c S a f e t y an d S o l u t i o n s

a Pepperl+Fuchs group company
http://www.elconinstruments.com/http://www.elconinstruments.com/http://www.pepperl-fuchs.com/http://www.pepperl-fuchs.com/http://www.elconinstruments.com/http://www.his.elconinstruments.com/


2/20

2

IN DEX

ABOUT US 3

INTRODUCTION TO P.A.M. (PLAN T ASSET MAN AGEMENT) 4-5

SMART INSTRUMENTATIO N AND PAM SYSTEMS 6

HIS (HART INTERFACE SOLUTIONS) - A BETTER WAY 7

HIS ARCHITECTURE 8-9

HIS SO LUTIO NS - GENERAL APPLICATIO N 10-11

HIS SOLUTIONS - INTRINSIC SAFETY APPLICATION 12

HIS SOLUTIONS - INTRINSIC SAFETY & REMOTE I/ O 13

MUX 2700 HART MULTIPLEXER 14-16

USING OPC WITH HIS 17

ACCESSORIES 18

MORE INFORMATION? 19


3/20

ELCON INSTRUMENTSI/O I nt e r f a ce, I n t r i n s i c S a f e t y an d S o l u t i o n s

ABOUT US

Founded in Milan, Italy during 1970, Elcon Instruments has been the worldleader with innovative intrinsic safety Interface (IS) solutions for the process

industry.

Commencing 2001, Elcon Instruments will join the Pepperl+Fuchs Group of

companies with a mission to provide our customers with a diversified rangeof speciali sed Intrinsic Safety and general purpose I/ O Interfacingproducts. These products will be supported by the largest international sales

and technical support team in our market sector.

Innovative Solutions for the Process Control Industry.

This catalog highlights the range of HIS (HART Interface Solutions) whichhave been designed in partnership with the Fisher-Rosemount AMS group.

Elcon has designed a range of solutions utilising our unique HART Interfacehardware, to enable you to implement F-R market leading AMS (AssetManagement Solutions) software.

Our HIS brochure aims to provide you with all the knowledge necessary toallow you to implement a cost effective Plant Asset Management strategy,which will simplify and reduce the cost of running your plants assets.

If you cannot find a suitable solution for your application within ourbrochure, please visit our dedicated HIS website

www.his.elconinstruments.com to view the latest solutions or to find yournearest AMS expert.Alternatively e-mail us [email protected].
http://www.his.elconinstruments.com/mailto:%[email protected]:%[email protected]:%[email protected]://www.his.elconinstruments.com/


4/20

4

IN TRODUCTION

SHD SHD

B

A

G

RS485

SHD+24

-

SHD+24

-

32Channel

Hart

Multip

lexer

MUX

2700

FAULTHARTTX

PWRON

SHD SHD

B

A

G

RS485

SHD+24

-

SHD+24

-

32Channel

Hart

Mul t

iplexer

MUX

2700

FAULTHARTTX

PWRON

Plant Wide LAN

DCS, ESD or F&G

I/ O Blocks

DCS + HMI Software

Connector to suit

DCS, ESD or F&G

I/ O cards

HIS

Field

Termination

Panels

HART Protocol Field Devices (32 per panel)

PAM systems provide live access to device information, and

streamline all activities related to calibration, configuration andmaintenance of instrumentation, while automatically recording

an instruments complete maintenance and diagnostic history.This information alone simplifies the task of regulatory compli-

ance, and saves hundreds of hours in preparation time.

In all industrial plants significant resources are dedicated to the

maintenance of cri tical plant assets. To reduce and contain thecost of plant maintenance, Plant Asset Management (PAM) sys-

tems are instrumental in improving both process efficiency andresource utilization. The savings obtained by implementing an

asset management strategy, increases plant availability and

contribute directly to improving the bottom line.


5/20

Model

2116/HAT/

FR-

A0-HART-01

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

CH1

CH2

2000

FAULTSTATUS

PWR

ON

32 ChannelHart

Multiplexer

MUX

2700

FAULT HARTTX

SHD SHD

B

A

G

RS485

SHD+24

-

SHD+24

-

32

Channel

Hart

Multiplexer

MUX

2700

FAULTHARTTX

PWRON

PAM SYSTEMAsset Management Software

Standard 4-20 mA connection for Control Signals

Multidrop RS485 HART Communications

Connector to suit

DCS, ESD or F&G

I/ O cards

Intrinsic Safety (Exi) Soultion

HART Signals from Hazardous Area

P.A.M . (PLAN T ASSET M AN AGEM EN T)

Asset Management Solutions (AMS) from Fisher-Rosemount, is

the leader PAM systems for instrumentation in the market today.AMS requires connectivity to devices in the field in order tocommunicate live with device and perform maintenance and

diagnostic functions. The HART Interface Solution (HIS) family ofsolutions from Elcon, provides the most sophisticated, elegant

and modular means of connecting a PAM system to HARTinstrumentation in the field.

A PAM system can be implemented as a stand alone system or

in conjunction with a distributed control system (DCS).Regardless of the type and size of the installation, Elcon has asolution. In fact, we have a solution for virtually all DCSs in the

market today, and hundreds of successful installations world-wide.


6/20

6

SMART IN STRUMEN TATION AN D PAM SYSTEMS

Simultaneous Analog and Digital Communication

Because the average value of the FSK signal is always zero,

the 4-20 mA Analog signal is not affected.The digital communication signal has a response time of

approximately 2-3 data updates per second withoutinterrupting the analog signal. Minimum loop impedance of230 Ohm is required for communication.

HART Field Device Features

W hilst new emerging all dig ital communications such as

Foundation Fieldbus and Profibus are starting to gain someacceptance, HART allows users to get many of the benefits ofdigital communications whilst still maintaining traditional

Analog wiring and control architecture.

HART offers:

Digital CapabilityAccess to all instrument parameters and diagnostics.Supports multivariable instruments.

On-line device status.

Analog Compatibility

Simultaneous analog and digital communications.Compatible with existing 4-20 mA equipment and wiring.

InteroperabilityFully open defacto standard.

Common command and data structure.Enhanced by Device Description Language.

AvailabilityField proven technology with more than 5,000,000 installations.Large and growing selection of products.

Used by more smart instruments than any other in the industry.

For more information please visit the HART Foundation on

www.hartcomm.org

The Process Control Industrys standarization on the HART

communications protocol for field devices has created a marketfor HART based software and hardware. Attracted by the

opportunity most manufacturers have created a wide range ofproducts to serve this industry. Routine maintenance is a very

inefficient way of managing plant assets because it tends toignore the current operating condition of the equipment. In many

cases perfectly functioning equipment is repaired because theschedule dictates a repair, while in other cases maintenance of

the equipment is ignored, thus compromising availability.

An inherent requirement of optimizing plant utilization is theavailability of real-time monitoring data about the equipment.

The data is used to implement predictive and proactivemaintenance programs that rely on the instrumentation to provide

self-diagnostics.

These programs eliminate the need for routine maintenance as, in

effect, field equipment can announce when it needs attention.

Evidence of this is given by the recent releases of PAM software

from major control system suppliers.

Using an asset management software systems coupled with HIShardware, maintenance or control room staff can continuallymonitor devices immediately detect and identify problems with

field equipment. All of this adds up to significant savings asproblems are intercepted before they cause major plant upsets.

In the area of device diagnostics, the PAM system via HIS can

access or exercise the diagnostics embedded in the HARTdevices. This allows engineering staff to focus their valuable time

on problem instruments, wi th no time wasted walking out to themarshalling cabinet or to the field.

HART Protocol

Introduction

HART is an acronym for Hig hwayAddressable Remote Transducer.

The HART protocol makes use of the Bell202 Frequency Shift Keying (FSK)

standard to superimpose digital signalsat a low level on top of the 4-20 mA.

This enables two way communications totake place and makes it possible for

additional information beyond just the normalprocess variable to be communicated to/ from a smart field

instrument.The HART protocol communicates without interrupting the

4-20 mA signal and allows a host application (master) to gettwo or more digital updates per second from a field device.

HART has been a protocol adopted by the majority of the

major manufacturers of process control field equipment.It is an open standard that is administered by the HART

Communications Foundation.

As the digital FSK signal is phase continuous, there is no

interference with the 4-20 mA signal.The relative simplicity of the HART protocol makes it easy for

both end users and suppliers to gain experience and benefitfrom the enhanced two-way communication capability of

smart field instruments using this technology.

The digital signal is made up of two frequencies - 1,200 Hz

and 2,200 Hz representing bits 1 and 0, respectively.

WEVE GOT

ABILITY

FIELD COMM UNICATION S PROTOCOL

Sine waves of these two frequencies are superimposed on the

direct current (dc) analog signal cables to providesimultaneous analog and digital communications.

Fig. 1

20 mA

4 mA

Time

Note: Drawing not to scale.

Analog

Signal

Digital

Signal

1 00

0

0

11

11

HART Signal superimposed on 4-20 mA
http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/http://www.hartcomm.org/


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HIS (HART Interface Solutions) - A BETTER WAY

Traditional Connection with HART Field Devices

The illustration in Figure 2 below shows the typical approach

connecting with a HART field device using HHC (Hand HeldCommunicator).The HHC can be viewed as a simplified PAM component as it

provides diagnostic information to a user, however its limited

in usefulness for the following reasons;

Only one instrument at a time can be accessed and

communicated with.

Valuable diagnostics and maintenance informationcannot be shared easily and in real time with other users.

New physical connection required for each field deviceto be interrogated.

HIS Benefits

Control System IndependentIrrespective of the particular DCS, ESD or F&G systeminstalled in a plant, HIS provides an independent means ofconnecting field devices to a PAM system.

A Step to FieldbusHIS is an ideal way for a user to receive many of thebenefits available from digital Fieldbus communications

without losing the training and expertise invested in the4-20 mA infrastructure and wi thout having to upgrade theDCS to Fieldbus.

Pre-Packaged Solutions

Elcon have made available solutions for the most commonapplication scenarios including interfacing with field deviceslocated in Hazardous explosive environments such as found

in the Oil & Gas, Petrochemical, Pharmaceutical Industries,Glass and Food Industries.

Control IntegrityThe design of each component that makes up HIS packages

ensures that at no time will the use of HIS affect the integrityof the control system.

Integral HART Filtering & Integral Impedance Boosting

Some DCS or I/ O cards do not have adequate minimumimpedance (230 ), as specified by the HART standard toensure reliable HART communicati ons and/ or can be

adversely affected by the HART signal modulating theanalog current.Elcon have developed a filter which is placed in series withthat particular I/ O channel.

This filter allows the passing of low frequency 4-20 mA dccurrent, and can boost impedance to ensure reliable HART

signals.

As this is an issue only with a select number of DCS, ESD orF&G I/ O modules Elcon ensure that adequate filtering circuitis packaged in solutions designed for specific systems.

Cost EffectiveHIS solutions represent exceptional value. Installation costsare kept to a minimum due to the packaged approach taken

ensuring that the right solution fits the application.In addition when costs are analyzed on a per instrumentbasis HIS represents a very small percentage of the price of

that device.

Legend:Color = 4-20 mA SignalColor = HARTSignal

Typical HART Connection Using HHC Fig. 2

V1

V2

V3

+

V4

V5

+

LDS1

DS2

LDS2

DS1

V6

V7

V8

V9

V10

V11

V12

V13

V14

B13

B 1 A 1

A13

V15

V16

V17

V18

V19

B13

B1 A1

A13

B13

B1 A1

A13

V20

V21

V22

V23

V24

V25

V26

RSUP1

RSUP2

V27

31J4

31J3

31J2

31J1

V28

V29

V30

V31

V32

B13

B1 A1

A13

X4

M arshal l ingCabinet

Fie ld DCS Ca bine t

Field Mounted HARTTransmitters & Valves

Hand HeldCommunicator

I/ O Card Racks

FTP(Field Termination Panels)

HIS SolutionsTo put it simply, HIS is the Enabling Hardware used for the

implementation of a PAM (Plant Asset Management) system.It provides the physical layer connectivi ty between PAMsoftware and the assets to be managed by that software,

typically transmitters and valves, whilst still maintaining thecontrol connectivity (4-20 mA) between field devices andProcess Control Systems.

As HART is an open standard, users wishing to set up a PAMsystem are no longer tied to the standard proprietary offeringfrom their control system vendor.

HIS allows you to tie together Asset Managements Softwarefield devices and any DCS, PLC and F&G control system,even from different suppliers.

HIS hardware solutions allow a PC running PAM software to be

able to communicate with all HART field devices simultaneously24 hours a day, 7 days a week.

Elcon have developed a range of packaged hardware solutions

that combine all the necessary hardware required to achievethis connection in a simple and cost effective manner.


8/20

8

HART IN TERFACE SOLUTION S

General Solutions

Integrated Control System Specific HIS Panels

Replacement of proprietary DCS, ESD or F&Gtermination panels.

Best & lowest cost solution.

Solutions for new or upgrade installations.

Fully integrated, eliminates redundant hardware.

Saves space and simplifies design.

The most cost effective, elegant and integrated

approach is shown in Fig. 3, where HISTerminati on Panel i s used as the field w ir ing

termination assembly.This integrated concept reduces wiring and frees

valuable control room space. The HIS panelincorporates the HART Multiplexer, contol system andfilters (if required), to allow di rect connection to the

I/ O cards using standard DCS vendor cable sets.

External HIS Panel - Parallel Connection

Using DCS, ESD or F&G termination panels andseparate external HIS panels.

Ideal for retrofitting existing installations.

Maintains all existing hardware and field

wiring.

The illustration in Fig. 4 shows typical scenario of

multiple field devices, connected to a DCS, ESD orF&G control System I/ O card via the Field wiring

Termination Panel wi th a parallel connection to aremote HIS Panel.

As all field signals are available at this onelocation this is an ideal point to link over to HISpanel, by simply wiring across the field

marshalling terminals, or by using special 1 In 2Out terminals.

HART filtering can be supplied with this solution.

External HIS Panel - Series Connection

Using DCS, ESD or F&G termination panels andseparate external HIS panel, but breaking into the

loop for a cleaner Series wiring solution.

Can replace marshalling terminals.

Cleaner installation.

As seen in Fig. 5, the existing wiring from field

devices to the Field wiring Termination Panel (FTP)is removed and wired through the HIS panel.Using this approach, the 4-20 mA signal connects

to the control system via a traditional hardwareconfiguration, while allowing a point of connection

for the HART Multiplexer.

HART filtering is not supported with this solution.

V1

V2

V3

+

V4

V5

+

LDS1

DS2

LDS2

DS1

V6

V7

V8

V9

V10

V11

V12

V13

V14

B13

B 1 A 1

A13

V15

V16

V17

V18

V19

B13

B1 A1

A13

B13

B1 A1

A13

V20

V21

V22

V23

V24

V25

V26

RSUP1

RSUP2

V27

31J4

31J3

31J2

31J1

V28

V29

V30

V31

V32

B13

B1 A1

A13

X4

Elcon HIS Panel

Field Mounted HART

Transmitters & Valves

G

A

B

G

A

B

RS-485

SH

D

SHD

32ChannelHart

Multiplexer

MUX

2700

FAULT HARTTX

PWR

ON

AMS Workstation

RS-485 toRS-232 converter

I/ O Card Racks


Fig. 4

32 ChannelHart

Multiplexer

MUX

2700

FAULT HARTTX

PWR

ON

Fie ld DCS Cabine tMa rshalling Cabinet


AMS Workstation

I/ O Card Racks

Elcon HIS Panel

Fig. 3

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

31

32

31

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

31

32

31

32 ChannelHart

Multiplexer

MUX

2700

FAULT HARTTX

PWR

ON

V1

V2

V3

+

V4

V5

+

LDS1

DS2

LDS2

DS1

V6

V7

V8

V9

V10

V11

V12

V13

V14

B13

B1 A1

A13

V15

V16

V17

V18

V19

B13

B1 A1

A13

B13

B1 A1

A13

V20

V21

V22

V23

V24

V25

V26

RSUP1

RSUP2

V27

31J4

31J3

31J2

31J1

V28

V29

V30

V31

V32

B13

B1 A1

A13

X4

Legend:

Color

= 4-20 mA Signal

Color = HART Signal

I/ O Card Racks


Field Mounted HARTTransmitters & Valves AMS Workstation


Elcon HIS Panel

Fig. 5


9/20


10/20

0

HIS SOLUTION S


AMS Workstation


Integrated Control System Specific HIS Panels Fig. 8


I/ O Card Racks

Legend:

Color = 4-20 mA SignalColor = HART Signal

Foxboro

Yokogawa

Honeywell

Integrated Control System Specific HIS Panels

Replacement of Proprietary DCS, ESD or F&G Termination Panels.

Solutions for new or upgrade installations.

Simple to implement.

Most integrated solution and eliminates redundantDCS/ PLC hardware.


Lowest cost solution.

Solutions where a HIS panel replaces the standard FieldTermination Panel normally supplied by the DCS System vendor.

As seen in Fig . 8 below, Elcon HIS panels combine all thestandard features included in the proprietary panels along with

a position for the HART Multiplexer and adds HART filters (ifrequired).

This is by far the most cost effective and elegant HIS solution.

Example of existing Panels:

- ABB.

- Elsag Bailey.

- Foxboro.

- Honeywell.

- Siemens Moore Products.

- Triconex.

- YISS Yokogawa Safety System.


11/20

HPSM/ 32/ MM-01 MiniMux (Single Mux) panel with field andcontrol system terminal connections.Suitable for series connection and patching to marshalling

terminals.

HPSM/ 32/ TB-02/ HF16 (or 32) Single Mux panel with either16 or 32 HART filters and terminals for field and controlsystem connection. Suitable for pass through or patching

to marshalling terminals.

HPMM/ 2108/ 64-HART-D Two position Mux panel with fourSub D connectors. Suitable for patching to marshalling

terminals.

External HIS Panel - Series ConnectionExternal HIS Panel - Parallel Connection


Elcon HIS Panel

M arshal l ingCabinet


AMS Workstation


FTA(Field Termination Assembly)



Elcon HIS

Panel


AMS Workstation

Fig. 10Fig. 9

I/ O Card Racks I/ O Card Racks

Legend:

Color

= 4-20 mA Signal

Color = HART Signal

GEN ERAL APPLICATIO N

HPSM/ 32/ MM-01

Ex ternal HIS Panels

Used in conjunction with proprietary DCS termination Panels

Ideal solution for retrofit installations.


Small footprint to add HART. Retains all existing DCS, ESD or F&G hardware.

The Illustrations below highlight the two most popular methods ofaccessing HART signals externally to the DCS FTP using thepopular HPSM/ 32/ MM-01 "MiniMux" Panel.

General purpose panels such as these are purely passivedevices that in no way affect the integrity of the 4-20mA controlsignal.

Connection to marshalling terminals (See Fig. 9).

Using either the existing terminals (with wiring in parallel) or forneater wiring "1 in 2 Out" terminals. Specific signal pairscontaining HART signals can be connected over to the

HPSM/ 32/ MM-01 via screw terminals.

Series connection (See Fig. 10).The HPSM/ 32 / MM -01 panel, is wired between the field

Signals and DCS FTP. This particular solution is also ideal forconnecting to PLC I/ O cards, as it provides a convenient fieldwiring termination point.


12/20

2

HIS SOLUTION S - IN TRIN SIC SAFETY

Integral a nd Remote MUX Panels

Elcon HiD2000 Termination Panels with Intrinsic Safety Isolators.

Fully integrate Intrinsic Safety and HART Mux panels.

Replaces DCS, ESD or F&G field termination panels.

Solutions for new or upgrade installations Simple to implement


HiD2000 is an ideal solution for applications where field

devices with HART are located in a hazardous area andtherefore need to pass through I.S. Isolators.

This solution uses Elcon HiD2000 plug-in I.S. Isolator family with

either integral HART multiplexer position or HART connectors topatch over to a separate MultiMux HART panel.

Two options are available.

1. If -HART appears in the HiD2000 termination board

model number, then a position is available to plug on aMux 2700 directly on the I.S. termination board (see

Fig. 11).

2. If -H appears in the HiD2000 termination board model

number, then this I.S. termination board feature HARTconnectors which can be patched over to an externalHART panel like the MultiMux Model N o.

HPMM/ 64/ CONA-01 (see Fig. 12).

Note both models are available with either a standard Sub D

connector (Elcon standard boards) or with DCS/ PLC connectorsto plug directly to DCS, ESD or F&G system I/ O cards using

their standard system cabling.

I/ O Card Racks

RS-485 toRS-232

converter

Intrinsic Safety with Remote HIS PanelIntrinsic Safety with Integrated HIS & FTP



AMS Workstation

I/ O Card Racks




AMS Workstation

Remote MultiMUXHART Panel

Fig. 12Fig. 11

Legend:

Color = 4-20 mA SignalColor = HART Signal

Elcon Custom HIS FTP(Field TerminationPanel) with HiD2000 Intrinsic Safety

Patch Cable

Elcon Custom HIS FTP(Field TerminationPanel) with HiD2000 Intrinsic Safety

HiD2000 with

integrated MUX 2700


13/20

Remote Fieldbus I/ O M ux Panels

HiD3000 Fieldbus Remote I/ O with integral Mux 2700.

Remote I/ O for Safe and Hazardous Area's.

Can accept signals from Zone 0,1 and 2.

Zone 2 mounting. Redundant Fieldbus gateway modules.

Fully integrate Intrinsic Safety and HART Mux panels.

Replaces DCS/ PLC I/ O cards.



HiD3000 Remote I/ O system can accept signals from a safe orhazardous area and converts these to industry standardFieldbuses output like Profibus, Modbus RTU using either a

single or dual (redundancy) Gateway Modules.

A position on the termination board is included to mount theMux2700.

Intrinsic Safety

3116/ HAT-2G/ SABUS-R-HART (16 module position panel).

3108/ HAT-2G/ SABUS-R-HART (8 module position panel).Both feature integral HART MUX 2700 position.Supplied with blue terminals for connecting hazardous

area field devices. Output is an industry standard Fieldbus(e.g. Profibus, Modbus RTU) which is wired direct to thecontral system Fieldbus communication card, which

eliminates control system FTP and I/ O cards.

General Application

3116/ FCT-2G/ SABUS-R-HART (16 module position panel).3108/ FCT-2G/ SABUS-R-HART (8 module position panel).

Both feature integral HART MUX 2700 position.Supplied with grey terminals for connecting field devices.

Output is an industry standard Fieldbus (e.g. Profibus,Modbus RTU) which is wired direct to the contral systemFieldbus communication card, which eliminates control

system FTP and I/ O cards.

HIS SOLUTION S - IN TRINSIC SAFETY AN D REM OTE I/ O

Intrinsic Safety and Remote I/ O System Fig. 13

Elcon Fieldbus I/ O with HART. HiD3000 replacesFTP(Field Termination Panel) and DCS I/ O

Fieldbus I/ O Card

RS-485to

RS-232converter



AMS Workstation

Legend:

Color = 4-20 mA SignalColor = HART SignalColor = Fieldbus Signal

Field/ ControlRoom Mounting

Hand HeldCommunicator

(on HART test jacks)

HiD3000 with

integrated MUX 2700


14/20

4

32 channel input.

RS485 serial data connection.

Communicate with HARTTransmitters and HART I/ P

Valve positioners.

No complicated master/ slave configuration.

Low power consumption, compact solution.

Application

The Mux270 0 HART Multiplexer provides 32 signal channels forconnection to smart transmitters or control devices supporting digital

communication according to the HART standard.Alternatively up to 16 HART only (i.e. no 4-20mA signal) devices can beconnected to each channel in multidrop configuration.

Full three-port isolation is included and each input channel has dual-capacitor isolation for freedom of loop connection.

It acts as a gateway between a workstation - typically a PC with suitablePAM software - and the field instrumentation.

Each Mux2700 is networked simply by connecting the high-speed RS485

output in multi-drop configuration.The Mux2700 interrogates each field device, under the supervision of theworkstation, retrieving information for storage in its internal database,

which can then be accessed at ease.

Specifications

DCSupply

Current consumption: 28 mA at 24 V, typical, RS485 quiescent.Power dissipation: 0.7 W at 24 V.

Signal channels

N umber of channels: 3 2.Dc isolation: dual capacitor each channel.Common mode voltage: up to 30 V.

Differential mode clamping: 5.2 V (for transient or ac signals).Common mode clamping: 10 V (for transient or ac signals).Receive signal range: 0.12 Vpp < signal < 1.5 Vpp.Receive impedance: > 5000 ohms.Carrier detect level: signal > 0.12 Vpp, CD asserted.

signal < 0.08 Vpp, CD not asserted.Transmit amplitude: 200 load - 0.43 Vpp < signal < 0.49 Vpp.

50 0 load - 1.1 Vpp < signal < 1.2 Vpp.Device type: secondary device.Impedance level: Hi gh impedance device.Data li nk type: HART Primary or Secondary M aster.

Field multi-drop support: option available upon request.

Note: the Mux 2700 generally complies with the HART FSK PhysicalLayer Speci f icat ion Rev. 8.0 avai lable f rom the HARTCommunication Foundation. HART is a registered trademark of theHART Communication Foundation.

Galvanic Isolation Specifications

24 V supply/ Field channels: 1400 Vac, rms.

24 V supply / RS-485 serial port: 1400 Vac, rms.

RS-485 serial por t/ Field channels: 500 Vac, rms.

Serial Port

Line type: RS-485, differential pair plus ground.Line speed: 9600 or 19200 Baud, switch selectable.Line topology: multi-point, master-slave connection.Unit address: 1 to 31, switch selectable.

M UX 2700 HART M ULTIPLEXER

Selector SwitchesSW 1-SW 5: Unit slave address.SW 6-SW 7: Baud rate.SW 8: Test mode.

LED IndicatorsPower ON: green.HART transmission: yellow.Fault: red.

1 2 S 3 4 5 6 S 7 8 9 10 S11121314 S15161718 S19202122 S23242526 S27282930 S3132

1 2 S 3 4 5 6 S 7 8 9 10 S11121314 S15161718 S19202122 S23242526 S27282930 S3132

32Cha n

nel

Hart

Multiplexer

MUX

2700

FAULTHARTTX

PWRON

1 2 S 3 4 5 6 S 7 8 9 10 S11121314 S15161718 S19202122 S23242526 S27282930 S3132

1 2 S 3 4 5 6 S 7 8 9 10 S11121314 S15161718 S19202122 S23242526 S27282930 S3132

32Cha

nnel

Hart

Multiplexer

MUX

2700

FAULTHARTTX

PWRON

1 2 S 3 4 5 6 S 7 8 9 10 S11121314 S15161718 S19202122 S23242526 S27282930 S3132

1 2 S 3 4 5 6 S 7 8 9 10 S11121314 S15161718 S19202122 S23242526 S27282930 S3132

32Cha

nnel

Hart

Multiplexer

MUX

2700

FAULTHARTTX

PWRON

PC HostMaintenanceWorkstation


Multi-dropRS-485 network(up to 31 units)

Mux ConnectionsFig. 14

WEVEGOT

ABILITY

FIELDCOMMUNICATIONSPROTOCOL


15/20

High Specification Front end Design

Two Decoupling Capacitors are provided, one for ecch signalconnection.Both + Ve (positive) & - Ve (negative) signal wires are therefore

decoupled from DC signal. Only the high frequency digitalHART protocol signal passes through to the internal Multiplexercircuitry.

Failure of any one capacitor from either a short circuit or opencircuit means that availability of 4-20 mA control signal will notbe affected.

No DC loading of 4-20 mA Control Signal.

No single point of failure.

High Noise Immunity.

The purpose of these capacitors is to block the DC signal

component present on each 4-20 mA external loop, avoidingboth a DC error induced on the loop and any undesirableground-loop.

The presence of a non-polarised capacitor in series with both the+ and the terminal of each channel is very convenient for avariety of reasons, as summarised in the following:

It is possible to sense the HART signal at di fferent DC voltage

levels on each channel, as often required when the same MUXinter faces both Transmitters and I/ P devices or in othermixed configurations.

It is not mandatory, to connect the + MUX terminal to the +side of the 4-20 mA current loop (in fact, the MUX inputterminals are basically not polarised).

As better explained on page 16, the MUX can tolerate one ormore short-failed input capacitors while still working properly,the probability of loop interference is also very low for a wide

range of internal MUX faults.

The MUX input isolation was designed to allow the highestflexibility in connecting the channels to sense the HART signal.

The max 30 Vdc input voltage (specified between all terminals,both belonging to the same channel or not) makes it possible toconnect any MUX terminal to whatever voltage level can be

derived from a 24 Vdc supply, +20% tolerance included.

DESIGN FEATURES

Self Contained Architecture

Each Multiplexer module is a stand alone device containing allnecessary hardware to communicate with up to 32 HARTprotocol enabled Field Devices and a host PC via RS485 (see

Fig. 14).

Fast Polling. One module design.

RS485 di rect from module.

No communications bottleneck.

Ideal for valve diagnostics.

Wide Software Compatibility

Fully compatible with F-R AMS (Ver 5.0 is also an OPC server),ValveLink, and Cornerstone.Additional compatability extends to HART OPC server softwareavailable from HCF (HART Communication Foundation).Allowing users to write dedicated applications for their specificneeds.Fully tested, by a ll key PAM vendors. Reliable support &upgrade path through strong F-R Partnership.

Three-port Isolation

The three-port isolation structure of the MUX2700 is depicted inFig. 16 below. As you can see, both the 24 V supply input andthe RS-485 serial interface are isolated from the HART section,that is to say, from the HART signals on the field devices.

This is full galvanic isolation, implemented either by transformeror by optocoupler.

ELCON INSTRUMENTSI /O I n t e r f ac e , I n t r i ns i c S a f e t y a n d S o l u ti o n s

RS-485INTERFACE

OPTO

ISOLATOR

HART

MODEM

MUX

A

CPU

A A31

B A30

A32

C32

C1

B32

B1

0.68 F

2.2 F

0.68 F

2.2 F

CH 1

CH 2

A1

A3

24 V

A4, A5, A6

SCREEN

POWERSUPPLYUNIT

DCSupplyBus

+

RS485DataBus

F

Mux.

&

HART

Ch. 2

Ch. 1

Ch. 32

RS485I/F

~=

=

~=

~

Mux Three Port IsolationFig. 16Mux Block DiagramFig. 15


16/20

6

What is OPC?

The OPC Specification is a non-proprietary

technical specification that defines a set of stan-dard interfaces based upon Microsofts

OLE/ COM technology. The application of theOPC standard interface makes possible inter-

operabi lity between automation/ control applications, field sys-tems/ devices and business/ office applications.

Traditionally, each software or application developer was re-quired to write a custom interface, or driver, to exchange data

with hardware field devices. OPC eliminates this requirement bydefining a common, high performance interface that permits this

work to be done once, and then easily reused by any standardor custom software application. This means that a software ap-plication designer can concentrate on the core objective, as all

the housekeeping functions are provided by OPC.

OPC & HIS

In a HART environment this means that the field dynamic device

data once only available within the HART host applications localenvionment (if the host application is also an OPC server) can

now be made available to any OPC compliant application.

What isan OPC Server?

OPC Server is a software application that resides on a PC. It pro-vides the connectivity between the HIS serial network and any

client OPC application. Using an OPC Server connected to an El-con HIS package

HART informationcan now be distrib-

uted to any OPCcompliant client soft-

ware located any-where across an en-

terprise's network in-frastructure.

OPC server soft-ware is included asan optional module

within the Fisher-Rosemount' s Asset

Management Solu-tions (AMS) V. 5.0

software or avail-able from the HART

Communications

Foundation as a standalone application package.HART OPC Server enables

1. SCADA / HMI software connectivity.2. Ethernet Connectivity.3. Custom Applications.

SCADA / HMI software connectivity

The primary benefit of using an OPC Server such as AMS withElcon HIS products, is the ability to share device information from

HART instruments with other software applications. Most popularSCADA or MMI/ HMI software are now OPC compliant and

therefore are able to communicate with the HART OPC Serverand individually talk with any HART field device on the plant for

reporting, trending, graphing etc.

Ethernet Connectivity

Once HART data is passed to an OPC Server it can then be

made available via an enterprises LAN or Wan network usingEthernet. Information can also be made accessed via the Internet

or a companys extranet infrastructure. This for example meansthat a instrument expert located at the factory in the USA can

look at diagnostics information on a particular instrument in hiscustomers plant locat-

ed on the other side ofthe world.

Powerful Custom

ApplicationsPerhaps the most pow-

erful feature is the po-tential for a user or sys-

tem integrator to quicklybe able to design a cus-

tom application to per-form a specific function.

For example field com-missioning tools can bedesigned as a client ap-

plication that allow mul-tiple field devices from

a specific area in aplant to be locked at certain values, all at the same time, so as to test

out a DCS or ESD system's correct operation. Such applications cansave time and money especially at commissioning and start up phas-

es of a new project. A similar task using conventional methods wouldinvolve significantly more time and money. Elcon can advise on de-

signing a custom application to meet your specific needs.

What is Available from the HART Device Using OPC HART Host?

Each HART device has a wealth of information that can be clas-sified as Device Common and Device Specific. Most control sys-

tems can only access one piece of this information, usually theprimary variable via 4-20 mA. OPC allows the full potential of aHART devices functionality to be realized especially the new bred

of multivariable instruments, independently of the control system.Listed below is a sampling of what information is available any

HART field Device to an OPC server;

Typical HART data items available via OPC

Digital Proces Data

Primary Variable (PV); PV Units

Secondary Variable (SV); SV Units

Tertiary Variable (TV); TV UnitsQuaternary Variable (QV); QV Units

PV Damping Time

PV Upper Sensor Limit

PV Lower Sensor Limit

PV Minimum Span

4-20 mA Data

Loop Current (mA)

Percent Range

Upper Range Value (Span)

Lower Range Value (Zero)

Device Information

Manufacturer Code

Device Code

Tag

Descriptor

Message

Device Status

Device Malfunction

More Status Available

Configuration Changed

PV Out of Limits

Non-PV Out of Limits

Loop Current Fixed

Loop Current Saturated

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 1 3 2 3 1

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 1 3 2 3 1

3 2 Ch a nne l

Ha rt

Mul t i pl e xe r

MUX

2 7 0 0

FA U LTH AR TTX

PWR

ON

HARTHOST I/ O SystemsModem

Multiplexers

OPC Server

SCADA

TrendingMIS/ MRP

SPC/ SQC

Web Server

Device Setup

Valve Diagnostics

Instrument Management

Field Device Manufacturing

HART - Pass-Trough

OPCServer

HART Server Fig. 17

PC Network

PV; PV Units

OPC Server /HART Host

Fig. 18

OPC Client

HART Host

Subscribe:

PV; PV Units

Note: Contact instruments device vendors for specific details.

OPC SERVER SOFTWARE


17/20

ELCON INSTRUMENTS

Short Circuit Failure of OneDecoupling CapShort Circuit fai lure of one capacitordoes not effect the loop operation andthe HART signal is fully operational.

ELCON INSTRUMENTS

ELCON INSTRUMENTS

0 V

PowerSupply

24 Vdc

CH 1 CH 2 CH 3

CH 2

CH 1

CH 32 ~=

=

~=

~

F

Mux.

&

HART

RS485

I/F

+

CH 2

CH 1

CH 32 ~=

=

~=

~

F

Mux.

&

HART

RS485

I/F

+

CH 2

CH 1

CH 32

Open Circuit Failureof One Decoupling CapOpen Circuit failure of one capacitordoes not effect the loop operation andthe HART signal i s fully operational.

Typical DCS Termination

Assembly Panel

To DCS I/ O Card

Normal Operation EachUnder normal operation, the 4-20 mA control signalis protected by the in line capacitors which ensure

that no DC loading is placed on the loop. Both the4-20 mA and HART communication signal isoperational.

~=

=

~=

~

Mux Connections Fig. 19

F

Mux.

&

HART

RS485

I/F

+

M UX 2700 HART M ULTIPLEXER


18/20

8

Power Supplies

Model No.: PS1550 & PS2500

Each HIS package requires a nominal 24Vdc supply to power

the Mux2700. However if a integrated Control System specificHIS solution is required, then this will also need to supply power

to the field device, placing a heavy burden on the power supplyemployed. Therefore Elcon have available various high integrity

power supply solutions, offering modular redundancy and highavailability.

For further details consult our PS-Range brochure or websitewww.elconinstruments.com.

PS1550

PS2500

MUX ADAPT27/ 17

1700 HHT

RS485/ 232 Converter

Model No.: Westermo MA-44

PC's do not normally include a RS485 port, therefore it isrecommended to use an external module to convert theRS48 5 signa l from each of the MUX270 0 modules toRS232.For this function Elcon recommends the Westermo MA-44.

Up to 31 MUX2700s can be connected on a maximum of1200 m of cable to each PC Serial Port.

For additional information refer to the Westermo websitewww.westermo.se

Adapters

Model No.: MUX ADAPT 27/ 17

PCB adapter to use the new Model MUX2700 on older styleMUX1700 termination boards.

Model No.: 1700 HHT & 2700 HHT

PCB Adapter used for trouble shooting single HART loops.The 1700HHT & 2700HHT plugs onto the termination board in placeof the MUX and provides access to all 32 HART signals via test jacksfor HHC hook-up.

ACCESSORIES
http://www.elconinstruments.com/http://www.westermo.se/http://www.elconinstruments.com/http://www.westermo.se/


19/20

MORE INFORMATION?

his.elconinstruments.com

[email protected]

w w w
http://www.his.elconinstruments.com/mailto:[email protected]://www.his.elconinstruments.com/http://www.his.elconinstruments.com/http://www.his.elconinstruments.com/mailto:[email protected]


20/20

ELCO N REPRESENTATIVE & DISTRIBUTOR:

ELCON IN STRUMEN TS SRLItaly

HEAD OFFICE

Via delle Industrie, 420050 Mezzago (MI)PO Box 14 - 20050 Mezzago (MI)

Telephone: ++39 039 6292 1General fax: ++39 039 6292 240Sales fax: ++39 039 6290 290

e-mail: [email protected]

ELCON INSTRUMENTSASIA - PACIFIC

Suite 5005 Bayside Plaza376-380 Bay StBrighton - Le - SandsSydney, N.S.W. 2216 - Australia

Telephone: ++61 2 9556 1188Fax: ++61 2 9556 3400Jfax: ++61 2 9475 0745


ELCON INSTRUMENTS INC.U.S.A.

1600 Enterprise ParkwayTwinsburg, Ohio 44087

Cleveland

Telephone: ++1 330 425 3555Fax: ++1 330 425 4607


ELCON IN TRIN SIC SAFETY LTDUnited Kingdom

Blackpool TechnologyManagement CentreFaraday WayBlackpool - Lancashire - FY2 OJW

Phone: ++ 44 01253 474200Fax: ++ 44 01253 474201


ELCON IN STRUMENTSRussia

Leningradsky Prospect, 80125178, MoscowRussia

Telephone: ++7 095 1587 564Fax: ++7 095 7846 391


website: www elconinstruments com
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