Sensors

Design-in Guide

EasySense

Single, compact, cost-effective fixture controlPhilips EasySense for high bay Model SNH200

2 Philips

ContentsIntroduction to this guide 3 More information or support 3Warnings 3Introduction of EasySense for High Bay 4Product characteristics 5 Overview 5 Infared (IR) receiver 5 NFC antenna 5 RF antenna 5 Motion detector 6 Sensor view shield 7 Light sensor 8 System start-up behavior and auto-calibration 9 Auto-calibration routine 9Lighting control 10 Task tuning 10 Grouping and zoning 10 Daylight harvesting 11 Occupancy sensing 12 Manual dimming override 13 Group occupancy sharing 14 Parameters for lighting control 14A warehouse aisle application 16 Grouping concept 16 Zoning concept 18Phone-based app and configuration 21Mechanical design-in 21 Recommendations to maintain good Zigbee RF signal performance 22 Wiring 22EasySense with multiple Philips Advance Xitanium SR LED drivers 1:N application 23FAQ 24Contact details 25Disclaimer 25

3

Introduction to this guide

Thank you for choosing the Philips EasySense for High Bay (model # SNH200). This document provides necessary information for fixture design-in and application-specific configuration. It covers sensor functionality, mechanical mounting, wiring details, configuration and commissioning (grouping and zoning), application notes and frequently asked questions. For sensor specifications, please see the datasheet available at www.philips.com/easysense.

More information or support

For further information or support, please consult your local Philips sales representative

or visit www.philips.com/easysense.

EasySense

Design-in Guide

Introduction

to This Guide

Warnings • The EasySense for High Bay is a Sensor Ready (SR) device and therefore must be used together with a Philips Xitanium SR LED driver or Xitanium SR Bridge

• Do not apply mains power directly to the sensor.

• Do not cover the sensor during operation or mount the sensor recessed.

• External infrared sources might have influence on occupancy detection.

• Ensure that the sensor area defined for occupancy detection is not blocked by any obstacles. Misalignment of sensor might influence occupancy detection and daylight regulation

• Adapting to environment changes can be done by executing a power off – on cycle of the Philips Xitanium SR driver. See the section System start-up behaviour and auto-calibration for details.

• Make sure that the sensor, especially the occupancy detection lens, is not damaged during shipment and handling.

• The application area of the sensor is for an indoor industrial environment such as a warehouse and should be ventilated. EasySense has no protection against aggressive chemicals.

• Make sure sensor is not covered by metal to allow expected RF communication.

Figure 1. Philips EasySense for High Bay

(Model # SNH200).

4 Philips

Introduction of EasySense for high bay

Philips EasySense for high bay is an award-winning, DLC-qualified solution for

per-fixture control of new light fixtures for industrial high bay applications. It is recognized

by the Illumination Engineering Society (IES) for the 2018 Progress Report for combining

occupancy sensing, daylight harvesting and task tuning in a single, compact package

for easy OEM fixture assembly or installation in the field. EasySense operates with

the established Philips Advance Xitanium SR LED Drivers through a simple two-wire

connection between sensor and driver, thus eliminating the need for multiple components

and auxiliary devices. The result is a cost-effective and easy-to-design-in solution ideal

for energy-savings and code-compliance strategies. The intuitive Philips field apps for

Android smartphones makes onfiguration and commissioning during and after installation

fast and easy.

EasySense includes advanced grouping functionality which enables occupancy sharing

and zoning capability. Up to 40 sensors can be operated together in a group, and the

group can then be divided into a maximum of 6 zones. With this advanced functionality,

the group can be programmed such that a zone comes up to full light level upon motion

detection while other zones come up to a lower background light level. This enhances

energy savings while still providing lighting in adjacent areas.

A primary benefit of EasySense for high bay is that it does not require gateways,

network connections or dashboards. The sensors in the group communicate to each

other via Zigbee for simple area-based control. It is an uncomplicated means to achieve

energy savings and code compliance for industrial high bay applications while maintaining

aesthetics in the space.

5

Product characteristics

Overview

EasySense contains multiple functions in one housing and uses two wires to connect to an

SR driver. (See wiring diagram in the Mechanical design-in section.)

EasySense is designed for an indoor industrial environment (warehouses, assembly areas,

cold storage areas etc.) in normally ventilated areas. The allowable ambient temperature

range is -25°C to +65°C. EasySense has no protection against aggressive chemicals. It

should be mounted to a fixture with allowable mounting heights up to of 52 ft. (16m).

Infared (IR) receiver

The sensor is enabled with grouping and zoning functionality. The infrared receiver serves as a communication portal for the commissioning and configuration of the sensor through a smartphone (Android platform) via Philips Field Apps.

In general, an IR transmitter, if present in a smartphone, is targeted at home applications e.g. TV, Media Player Remote Control and has a short transmission range with wide transmission angle. The characteristics of the built-in IR transmitter may not reliably allow long transmission range for heights up to 52 ft. (16m) and the narrow transmission angle needed to address only the desired luminaire for commissioning or configuration from floor level. Hence, SNH200 is commissioned and configured via InfraRed (IR) technology. To achieve heights up to 16m with minimal interference, an IR Dongle part number 9290 016 78906 is used. Stand directly under the fixture/sensor and point to avoid interference with nearby sensors.

EasySense

Design-in Guide

Product

Characteristics

Figure 2. Primary functions.

Figure 3. IR Dongle accessory

(part number 9290 016 78906)

for use with smartphone.

LED indicator and occupancy sensor (PIR)

Daylight sensor

IR receiver

RF antenna (side)

NFC antenna (side)

6 Philips

NFC antenna

The sensor can be configured through NFC (near field communication) using a smart phone (Android platform) with the EasySense NFC feature in the Philips Field App. NFC is a wireless protocol that enables electronic devices to establish radio communication with each other by touching the devices together or bringing them into proximity of ~0.5" or less. All parameter settings for lighting control can be configured via the NFC app even when the sensor is powered off. (See the section on Lighting control)

RF antenna

The RF antenna allows luminaire to luminaire wireless communication via IEEE 802.15.4 wireless protocol with radio frequency: 2400-2483.5MHz. The antenna area as shown in Figure 2 should not be covered by metal and should be exposed to free air to ensure sufficient range.

Motion detector

The occupancy sensor is a PIR (passive infrared) sensor that detects movement with a circular cross-area under an angle of X = ±30° and Y = ±30°. This PIR sensor has 3 concentric rings to help detect movement – the innermost with 4 facets, the middle with 12 facets and the outermost with 16 facets, see Figure 4.

When installed in an industrial setting, the sensor is sensitive to movement within a circular radius R. It will respond to movements down to a few inches at ground level. The maximum recommended height to place the sensor in the ceiling with the integral lens is 52 ft. (16m) to assure movement coverage and detection. The PIR sensor reacts on movement by means of a temperature difference, such as the human body temperature versus its surrounding temperature. The movement speed of the object or person can influence the height detection level.

The top and side detection patterns of this PIR sensor can be seen in Figure 5 and Figure 6. See Table 1 for the floor coverage of the sensor at different heights and a conversion between meters (m) and feet (ft.).

Figure 4. PIR lens with three concentric rings.

Figure 5. Occupancy coverage at height of 16m (52ft). Each of the concentric rings of the lens cover a specific area, indicated by a shade of grey in the above plot.

7

The coverage pattern plots above show the top and side view of the occupancy coverage based on NEMA test, an industry standard. In the side view, it is visible that coverage ratio of height:diameter is 1:1. For example if the mounting height is 25ft the diameter coverage is also 25ft.

Disclaimer:

1. 1In these plots, the white areas are blind spots and detection is based on subject’s motion. An idle subject may not continue to trigger occupancy detection once the hold time expires.

2. As PIR based sensing operates on the temperature difference between the subject and the ground level, the occupancy detection could vary due to clothing and size of humans.

Special Note: Ensure heat radiating devices are outside of the monitoring cone. Avoid drafts (e.g. from ventilators or heating systems).

Figure 6. Side coverage pattern at height of 16m.

EasySense

Design-in Guide

Product

Characteristics

Height [m] Height (ft.)Coverage Diameter [m]

Coverage Diameter (ft.)

16 52.5 16 52.5

12 39.4 13 42.78 26.2 9 29.54 13.1 4.5 14.8

Table 1. Floor coverage at different heights.

8 Philips

Light sensor

The light sensor is a photo diode that reads average light level captured under an angle

of approximately 10°. The intensity of the illuminance depends on the amount of artificial

and/or natural light supplied within the warehouse, as well as how this light is reflected

toward the ceiling/sensor. The sensor converts the illuminance signal into ON or dimming

commands to the Philips Xitanium SR LED driver in order to maximize the usage of natural

light while maintaining sufficient light level on floor level. Daylight control is disabled by

default and can be enabled via the app. When daylight control is enabled, the minimum

dim level will be the background level or the minimum dim level programmed in the driver,

whichever is higher. Lighting will not be shutoff even with an abundance of daylight.

The sensor should be installed with a minimum distance to any windows to avoid the

sensor looking outside. When the sensor is mounted too close to the window it will

look partly outside. Reflection from objects or the environment can directly reach the

sensor. The sensor could then measure such high illumination levels that it will drive the

luminaire light output to its minimal level or even switch it off. The optimum distance [Y]

from the window to sensor is shown in Figure 8. This graph shows the relation between

the distance from the top of the window to the sensor and the height of the sensor from

the top of the window (see Figure 7).

The light sensor measures the total amount of light with an opening angle of 10 degrees

whereas the PIR has an angle of 30 degrees, all calculated from normal.

The following aspects should be observed during installation:

• Minimum distance from the window ( see graph below)

• Prevent light reflections from outside entering the sensor (for example sunlight reflection

on a car bonnet) as this will lead to incorrect light regulation.

As a guideline the formula 0.174 x H can be used to calculate the minimum distance

between the window and sensor whereby H is the height from the bottom of the window

to the ceiling.

Figure 7. Sensor placement. Figure 8. Sensor mounting height with respect to window.

9

EasySense

Design-in Guide

System Start-up

Behavior and

Auto-calibrationSystem start-up behavior and auto-calibration

When daylight control is enabled and the sensor is powered on (either the mains

of the Xitanium SR driver is switched on or a momentary power dip is detected by

the sensor), the sensor performs an auto-calibration routine.

Auto-calibration routine

Auto calibration has a “dark” and “light” measurement. Upon power up, it will go to

the 60% light level for a few seconds. Then the following sequence occurs:

The complete procedure takes approximately 10 seconds. The calibration will always end

at dim level of 100%. From the 100% light level the daylight regulation will start, if enabled.

Note: If daylight control is disabled, the auto-calibration is disabled as well.

Important: Make sure no objects are blocking the sensor’s view and no surface reflection changes occur in the sensor’s view during auto-calibration. For example, do not position a

forklift truck in the sensor view area during calibration.

Step Measurement Dim level Time period

1 dark 5% 5 seconds

2 light 100% 5 seconds

Table 2. Auto-calibration routine table.

10 Philips

Lighting control

EasySense enables stand-alone LED lighting systems with integrated occupancy sensing

and daylight harvesting. The grouping and zoning control is setup through the Philips

Field Apps, a free app for Android Smartphones, available in the Google PlayStore. It is

also possible to add wireless switches to the entire group for manual control. Furthermore,

advanced grouping allows occupancy sharing (i.e. fixtures within a group can be

programmed to remain at prescribed light levels as long as occupancy is detected

anywhere in the group).

Task tuning

Task tuning allows adjustment of the maximum output of a fixture (to a certain percentage

of the maximum light output of the fixture as shipped from the fixture manufacturer).

After installation, it is possible that the task light level is not set according to the end

user needs (light level too high). The task light level can be adjusted by the installer

or building maintenance personnel to a value between 5% and 100% of the max fixture

level through the app.

Grouping and zoning

Grouping allows multiple fixtures to connect with each other using a Zigbee network

and to broadcast occupancy status. It is a self-contained network without need for any

gateways. The grouped fixtures can be configured for desired behavior for presence

detection based on installer settings, e.g. the light behavior of the rest of the luminaires

can be configured for maximum brightness (i.e., referred to as ‘field task level’ further)

or background light level.

Zoning allows sub-grouping of luminaires. In an industrial setup such as a warehouse,

it may be desired to have an aisle turn on to field task level while adjacent aisles switch

on to a lower background light level. In another scenario, if a forklift truck enters a very

long aisle, it could be desired to only bring the first 5 fixtures, for example, to maximum

brightness/field task level and the rest of the fixtures in the aisle to a lower background

light level. This avoids the tunnel effect, driving or walking into completely non-illuminated

spaces, or unnecessarily lighting up the whole aisle.

Both grouping and zoning can be set up via Philips Field Apps. Up to six zones can be

assigned within a group, and a group can have up to 40 luminaires. A wireless switch

can be added to a group for manual control. Note that the switch can only control group

behavior, and not zone behavior.

11

EasySense

Design-in Guide

Lighting control

Daylight harvesting

The daylight-based control is disabled by default in the sensor. This feature must be

enabled through the app to implement daylight harvesting.

When enabled, the light sensor auto-calibrates when power to the driver is cycled. It takes

at least 5 auto-calibration cycles (i.e. 5 power cycles) for the new calibration setpoint value

to be effective. The light level of the fixture is bound by the field task level (maximum light

level) and the background level (minimum light level). If the background light level is set to

20%, the light will only dim to 20% during daylight harvesting. When daylight-based control

is disabled, the auto-calibration sequence will not occur.

Daylight-based control is not active after the hold time of the occupancy sensor

expires. Figure 9 and Figure 10 show examples of lighting control using both daylight

and occupancy. When the daylight level is low (see Figure9) and an occupant is present, the

fixture light level is proportional to the daylight level. Assuming the incoming daylight level

is constant, the light level remains the same until the hold time expires, after which the light

level fades to the background light level, staying at that level for prolong time. When the

daylight level is high, the light level is proportional to the daylight level.

However, when there is an abundance of daylight, the light level does not dim lower

than the background light level or the minimum dim level programmed in the driver,

whichever is higher (see Figure 10). The fixture light level will not shut off.

Note: The “hold time” and “prolong time” are described in later section “Parameters for lighting control”.

Figure 9. Lighting control with low daylight level. Figure 10. Lighting control with low daylight level.

12 Philips

Occupancy sensing

Occupancy-based lighting control is enabled by default for EasySense, and it can be

disabled using Philips Field Apps, either through NFC or IR.

Switch-on/off sequence

When occupancy is detected, lights are dimmed up to the field task level (or the level

determined by daylight sensor in case daylight control is enabled) in 0.7 seconds. When

occupancy is no longer detected, the following switch-off sequence is executed: the sensor

will wait until the hold time expires after which the light fades to the background level in

grace fading time. The light level remains at the background level for prolong time, after

which the light fades from the background level to off in 0.7 seconds.

Note: No motion is detected during the hold time period.

Use case Max rating of the luminaire 4000 lm

Min dimming level of driver 5% = 200 lm

The user configures the sensor parameters through Philips Field Apps:

Task tuning level 80% = 3200 lm

Background light level 20% = 800 lm

Note: All percentage levels refer to the max rating of the fixture. The full dimming range of

the fixture is bound by task tuning and min dimming level. By setting field task tuning = 80%

and with driver minimum dimming level = 5%, the light output range is 3200 lm to 800 lm

in automatic daylight regulation. A wireless switch can however be used to control the full

dimming range of the light (4000 lm ~ 200 lm).

Figure 11. Automatic lighting control with manual dimming override.

13

EasySense

Design-in Guide

Lighting control

Manual dimming override

Light level can be adjusted to any level between max (task tuning level) and min

(minimum dimming level of the LED driver) by pressing the dim-up and dim-down

buttons of the switch. See Figure 11.

• Light level can be set to an intermediate level by manual dimming override using

a wireless switch. When a manual dimming override is performed, daylight-based

control is disabled, and light will be set constantly at this level. When the room

becomes unoccupied, the light goes to the background light level during prolong

time, and if an occupant enters the room before prolong time expires (See Figure 12),

the light will switch back to the level set by the manual dimming override. If the prolong

time expires, the light will turn off and go to the maximum light level when an occupant

enters the room (See Figure 13). The manual override is active until both the hold time

and prolong time are expired.

• The manual override setting of a switch can be reset by a short press of ‘ON’ button.

Figure 12. Auto-on/Auto-off with manual dimming override.

Figure 13. Auto-on/Auto-off with manual dimming override.

14 Philips

Group occupancy sharing

The traditional approach to energy savings is wattage reduction, which often results in

light levels below desired levels. Moreover, fixtures with standalone lighting controls may

create so-called “checker board” appearance. Philips EasySense for High Bay overcomes

these issues through advanced grouping and zoning features. Full light output can

be delivered in occupied aisles while maintaining a lower background light level in

unoccupied aisles. The aesthetics of the space is maintained by not turning off the full

group until unoccupied.

The group occupancy sharing feature can be enabled (default)/disabled through the

Philips Field Apps. The group lighting behaviour can also be configured to background

light level or field task light level. With the group occupancy sharing disabled, the fixture

does not share its occupancy status with other fixtures or respond to the occupancy

detection from the rest of the group.

After installation, a large lighting group of up to 40 luminaires can be created easily and

quickly using the Philips Field Apps. With default settings, as long as occupancy is detected

by any luminaire in the group, the fixtures are turned on at task light level while the rest of

fixtures in non-occupied areas of the group stay on at the background light level.

Note: During the group occupancy sharing, daylight harvesting occurs automatically.

Parameters for lighting control

All lighting control parameters are stored in the sensor, and it is possible to configure

most of these parameters through NFC or IR. Figure 18 shows a typical occupancy-based

control sequence.

• Fade to switch on/off time

• Hold time

• Grace fading time

• Prolong time

• Field task tuning level

• Background level

• Group occupancy sharing

• Group light behaviour

• Occupancy mode

• Daylight based control

• Occupancy sensing sensitivity

Figure 14 . Occupancy based lighting control.

15

EasySense

Design-in Guide

Lighting control

Fade to switch-on time is the time (T1 to T2) from the point at which occupancy is detected until the lights dim up to the max light output. This timer is set to 0.7 sec and

is not configurable.

Hold time is the time (T3 to T4) from the point at which the last movement has been detected (e.g. occupant left the room) until grace time starts. This timer is set to 15 minutes

by default and can be configured from to 1 – 120 minutes.

Grace fading time is the time (T4 to T5) during which the lights are being dimmed down from the current light level to the background level. By default, grace fading time is 10 sec

and can be configured to 0 – 25 seconds.

Prolong time is the time (T5 to T6) at which the background level is maintained at a fixed level. Default prolong time is 15 minutes and can be configured from 0 – infinity

(This would ensure that the lights never switch off).

Fade to switch-off time is the time (T6 to T7) for the lights to fade from background level to off after prolong time is expired. This timer is set to 0.7 sec and is not configurable.

Field task tuning level is used to configure the required light level on the task plane. Setting this to 100% enables the installed maximum light level. A lower percentage level

can be configured to set the new maximum light level of the fixture through the app.

See Task Tuning for more details.

Background level is a light level significantly lower than 100%, used to save energy when space is not occupied.

Group occupancy sharing is a configurable feature to allow the sensor to share its local occupancy detection status and control lights with others in the group. As long as

presence is detected within the group, the fixtures stay at the background light level in

non-occupied areas.

Group light behavior is a configurable feature that determines how the other fixtures in the group respond to occupancy detected elsewhere in the group. The options are background

light level and field task level.

Occupancy mode is a configurable feature providing control flexibility when wireless switches are used:

• Auto-on/off mode: Lights are switched on and off automatically based on occupancy

detection and time delay settings.

• Manual-on/auto-off: Lights are turned on manually through a wireless switch and

turned off automatically, as a vacancy sensor.

• Manual-on/off: Lights are turned on and off manually through a wireless switch.

This mode simply does not make use of the occupancy sensing functionality.

Occupancy sensing sensitivity is configurable and set a "high" as default. This can be adjusted to "medium" or "low" sensitivity depending on mounting height and other factors.

See "Occupancy Settings" section for further details.

16 Philips

A warehouse aisle application

Here is an example of the group occupancy sharing and zoning behavior in a

warehouse application.

Grouping concept

17

EasySense

Design-in Guide

A Warehouse

Aisle Application

18 Philips

Zoning concept

19

EasySense

Design-in Guide

A Warehouse

Aisle Application

20 Philips

21

EasySense

Design-in Guide

Phone-based App

and Configuration

and Mechanical

Design-in

Mechanical design-in

EasySense for High Bay is intended to be mounted to a standard ½” knockout available on the luminaire itself or a junction box. A washer and locknut are included with the sensor

for this purpose. An OEM can develop custom brackets to attach to the top surface of

the sensor in case the sensor needs to be mounted to a curved/non-flat surface. Mounting

screws are provided with the sensor for this purpose. These screws are matched to the

thickness of the plastic sensor housing. In case other screws are used, ensure that they do

not protrude through the sensor plastics. Also make sure that the view of the sensor is not

blocked anywhere by the luminaire or the bracket to avoid loss of functionality.

Phone-based app and configuration

There are two apps available for configuring the sensor with NFC and IR functionality:

EasySense NFC and EasySense IR. The commissioning of luminaires into groups and

zones can be done via EasySense IR app only.

Phone requirement: The Philips Field Apps works only on Android-based smart

phones. Refer to the website www.philips.com/easysense for the latest list of

compatible phones and their NFC reader locations. Irrespective of the phones

having an IR blaster, it is recommended to use an external IR dongle.

The app can be downloaded

from the Google Play store.

Links to the registration site can

be found at www.philips.com/

easysense to obtain user id and

password and to download the

app. Configuration parameters

of EasySense for High Bay can

be found in the data sheet also

posted at the EasySense page.

Figure 16. Assembling sensor onto a knockout.

Figure 15. Assembling sensor onto a knockout.

22 Philips

Wiring

Wire to wire connection

SNH200 includes 18AWG wires, 60cm in length with 8mm strip length. A wire to wire

connection can be made with connectors or wirenuts suitable for 18AWG solid wire.

The wire strip length in case of a wire to wire connection is connector dependent.

Wire to driver connection

A connection between the sensor and the driver should be made according to local

practices. The SR input wires of the EasySense for High Bay are not polarized for fixtures

using one driver and one sensor, and therefore can be connected, without taking care of

polarity, to the SR output of the driver – SR+ and SR- terminals. It is recommended to keep

wire distance from sensor to driver less than 50 feet. Polarity must be maintained when

connecting multiple drivers to one sensor.

The wire strip length in case of sensor to driver connection is ~8mm.

Recommendations to maintain good Zigbee RF signal performance

For good RF signal communication between fixtures, it is recommended to maintain a

4" (100mm) distance between EasySense enclosure and any metal wall. This would allow

RF communications up to 50 ft sensor-to-sensor.

In general, every dB drop reduces fixture to fixture distance by 1 meter. The chart

below gives one reference measurement for Total Radiated Power (TRP) vs. distance

from one side metal wall.

Figure 18. Distance vs. TRP.

Figure 17. Position of RF antenna on SNH200.

23

EasySense

Design-in Guide

EasySense with

Multiple Philips

Xitanium SR

LED Drivers

(1:N application)

EasySense with multiple Philips Xitanium SR LED drivers (1:N application)

When a group of fixtures is in the same daylight condition and needs to be operated

at the same level or when multiple drivers are used in a single luminaire, it is possible

to use one sensor to control multiple fixtures/drivers.

EasySense sends commands to all connected drivers (using DALI broadcast command);

it does not have capabilities for addressing individual drivers. The light commands are

sent as a broadcast commands, so occupancy-/daylight-based lighting control and task

tuning operate the same on all connected drivers. The readout of energy information from

the driver will not function. The energy readout of multiple drivers is planned for future

sensor generations.

In an SR system, it is necessary to have at least one SR driver. Each SR driver provides

~55mA of current on the SR (DALI) bus. As the sink current of SNH200 is ~250mA, the maximum number of connected SR drivers with enabled DALI power supply is 4.

Polarity must be maintained. When connecting more than 4 SR drivers to EasySense, the

fixture manufacturer must disable the DALI power supply on any drivers beyond quantity

4. This is not programmable in the field. The SR driver with disabled power supply will

still consume a maximum of 2mA from the SR (DALI) bus. Up to 10 max drivers can be

connected to one sensor with the DALI power supplies properly configured

24 Philips

FAQ

Is EasySense a DALI sensor? No. EasySense works with Philips SR drivers, which use the DALI protocol to communicate

between driver and sensor. This is the same principle as other SR-certified devices.

However, EasySense is not designed to work in legacy DALI networks and is not compatible

with DALI devices, hence EasySense is not a DALI sensor.

Can I use one sensor with multiple luminaires? Yes, it usually means turning off the SR power supplies in SR drivers beyond quantity four.

See EasySense with multiple SR drivers 1:N application section.

Can I use multiple sensors with a single driver? No. SNH200 is not intended to be used in a multi-master mode. In the typical 1:1 sensor to

driver connection the (single) SNS200 is the master and the SR driver is the slave.

Adding multiple sensors on SR bus can lead to bus conflict and undesired functioning

of the sensors.

Does EasySense make sense if I only want to do occupancy sensing and not bother with grouping? Yes. Most occupancy sensors run on high voltage or require an extra power pack, adding

cost and complexity. Typical wall plate-style occupancy sensors — while mass produced

and inexpensive —vary in performance by use case since the viewing angle from a wall

is less than ideal. Also, the relay-free operation of EasySense makes it inherently more

reliable. Grouping can be ignored during configuration or it can be disabled via the app.

How does the daylight harvesting feature work? EasySense does auto-calibration when the luminaire is first powered. See the system

start-up behavior/ auto-calibration section for details. Electric lighting will not reduce

below the programmed background light level or minimum programmed dim level of

the driver, whichever is higher, regardless of daylight availability. Electric lighting will

not shut off.

Traditional sensors lacking auto-calibration are either pre-set with an assumed task light

level or require manual calibration during commissioning. If daylight harvesting is disabled,

auto-callibration will not occur.

Is EasySense “failsafe”? Unlike traditional occupancy sensors, EasySense does not have a mechanical relay. This

is a benefit of Philips SR LED drivers, as on/off is done relay-free within the driver. Devices

with mechanical relays should be designed so that relay failure results in “lights on.” If an

SR driver does not see a digital signal from a device for a long period of time (e.g., loose

connection, sensor failure), the driver goes to full programmed output.

25

EasySense

Design-in Guide

Contact Details

and Disclaimer

Contact details

Philips EasySense

Product information:

www.philips.com/easysense

Or contact your local Philips sales representative.

Disclaimer

©2018 Philips Lighting Holding B.V. All rights reserved.

Note that the information provided in this document is subject to change.

This document is not an official testing certificate and cannot be used or construed

as a document authorizing or otherwise supporting an official release of a luminaire.

The user of this document remains at all times liable and responsible for any and all

required testing and approbation prior to the manufacture and sale of any luminaire.

The recommendations and other advice contained in this document, are provided

solely for informational purposes for internal evaluation by the user of this

document. Philips Lighting does not make and hereby expressly disclaims any

warranties or assurances whatsoever as to the accuracy, completeness, reliability,

content and/or quality of any recommendations and other advice contained in this

document, whether express or implied including, without limitation, any warranties

of satisfactory quality, fitness for a particular purpose or non-infringement. Philips

Lighting has not investigated, and is under no obligation or duty to investigate, whether

the recommendations and other advice contained in this document are, or may be,

in conflict with existing patents or any other intellectual property rights. The

recommendations and other advice contained herein are provided by Philips

Lighting on an “as is” basis, at the user’s sole risk and expense.

Specifically mentioned products, materials and/or tools from third parties are

only indicative and reference to these products, materials and/or tools does not

necessarily mean they are endorsed by Philips Lighting. Philips Lighting gives no

warranties regarding these and assumes no legal liability or responsibility for any

loss or damage resulting from the use of the information thereto given here.

© 2019 Signify Holding. All rights reserved. The information provided herein is subject to change, without notice. This document is not an official testing certificate and cannot be used or construed as a document authorizing or otherwise supporting an official release of a product incorporating a component supplied by Signify. The user of this document remains at all times responsible for any and all required testing and approbation prior to the manufacture and sale of such product and Signify disclaims any liability in reliance thereof. Recommendations and other advice contained herein are provided by Signify on an “as is” basis, at the user’s sole risk and expense. Signify expressly disclaims any warranties whatsoever as to the accuracy, completeness, reliability, content and/or quality of any recommendations and other advice contained in this document, whether express or implied including, without limitation, any warranties of satisfactory quality, fitness for a particular purpose or non-infringement. Specifically mentioned products, materials and/or tools from third parties are only indicative and reference to these products, materials and/or tools does not necessarily mean they are endorsed by Signify. If Philips branded products add: Philips and the Philips Shield Emblem are registered trademarks of Koninklijke Philips N.V. All other trademarks are owned by Signify Holding or their respective owners.

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