Single, Compact, Cost-effective Luminaire Control - Philips
SensorsEasyAirSNS200Design-in GuideSingle, compact, cost-effectiveluminaire controlPhilips EasyAir SNS200October 2019October 2019
ContentsIntroduction to this guideMore information or support33Warnings and instructions4Introduction of EasyAir SNS2005Product characteristicsEasyAir SNS200 overviewNFC antennaRF antennaInfared (IR) receiverMotion detectorSensor view shieldLight sensorLED indicator666667899Daylight calibration and System startup behaviorDaylight CalibrationSystem startup behavior101010Lighting controlTerminology used in this chapterOccupancy-based lighting controlTask tuningDaylight harvestingDaylight dependent overrideDaylight dependent switchingOccupancy sensingSwitch-on/off sequenceManual dimming overrideGroup occupancy sharing(SNS200 and future generations)Scene setting (SNS200 and future generations)A conference room for presentations111113131415161818192Design-in Guide - EasyAir SNS200Phone-based app and configuration26Mechanical design-inWire strip lengthWire insertionWire separation from the connectorWiring InformationWire distance for remote mounting Recommendationsto design-in a luminairearound EasyAir SNS200 with good RF signal Mountingin a bracket (SMB-50)Installing EasyAir SNS200 with ceiling mount bracket(SNS200CMP)Mounting distance guidelines for EasyAir SNS200CMP272727272728EasyAir SNS200 with multiple Philips Xitanium SRLED drivers (1:N application)FAQContact detailsPhilips EasyAir SNS200Disclaimer282930313233353536212424October 2019
Introduction to this guideThank you for choosing the Philips EasyAir SNS200. In thisguide luminaire manufacturers will find the informationrequired to design this product into a luminaire andconfigure it to suit specific applications. This design-inguide covers sensor functionality, mechanical mounting,wiring details, configuration and commissioning (grouping)method, application notes and frequently asked questions.For sensor specifications, please see the datasheetavailable at cted-lighting.More information or supportFor further information or support, please consult yourlocal Philips sales representative or echnicaldownloads.Philips EasyAir SNS200DatasheetProductinformationCommercial leaflet3Design-in Guide - EasyAir SNS200Design-in GuideOctober 2019
Warnings and instructions EasyAir SNS200 must be used only with Philips XitaniumSR LED driver. Do not apply mains power directly to the sensor. Do not cover the sensor during operation or mount thesensor recessed. External infrared light source in the space might haveinfluence on occupancy detection. Incorrect location of sensor (e.g., outside the view angleof the occupancy sensor) will result in occupancydetection not functioning correctly. When recalibration is needed for adapting toenvironment changes, make sure the Philips Xitanium SRdriver is power cycled. See System startup behaviors/Auto-calibration section for details. Faulty settings of the sensor might result in undefinedstartup behavior; make sure field task level is set higherthan the background light level. Make sure the sensor, especially the occupancy detectionlens, is protected from damage during shipment andhandling. The application area of EasyAir SNS200 is designed for atypical indoor environment (open/private offices,conference rooms, classrooms, corridors, etc.) in normallyheated and ventilated areas. EasyAir SNS200 has noprotection against aggressive chemicals or water. Make sure the the EasyAir SNS200 RF antenna is notcovered by metal for proper RF communication.4Design-in Guide - EasyAir SNS200October 2019
Introduction of EasyAir SNS200The Philips EasyAir SNS200 is the ideal solution forper-luminaire control of new light luminaires. It combinesoccupancy sensing, daylight harvesting and task tuning in asingle, compact package for easy OEM luminaire assembly.EasyAir SNS200 operates with the established PhilipsXitanium SR LED driver standard to make a simple twowire connection between sensor and driver, thuseliminating the need for multiple components and auxiliarydevices. The result is a cost-effective and easy-todesign-in solution ideal for energy-savings. An intuitiveapp makes configuration and commissioning during andafter installation fast and easy using Philips Field Apps.EasyAir SNS200 with advanced grouping functionalityenables addition of qualified wireless switches. Up to 40sensors can be grouped to a switch using Philips FieldApps. In addition to easily adding user control to a space,the grouping feature facilitates auto-off/manual-on usecases. Furthermore, advanced grouping allows scenesetting (e.g., presentation mode for a conference room) aswell as occupancy sharing (i.e., luminaires within a groupcan be programmed to remain at prescribed light levels solong as occupancy is detected anywhere in the group).EasyAir SNS200 is available in three colours: white, greyand black. Please refer to the SNS200 datasheet on thetechnical downloads echnicaldownloads5Design-in Guide - EasyAir SNS200October 2019
Product characteristicsEasyAir SNS200 overviewEasyAir SNS200 contains multiple functions in one housingand uses two wires to connect with an SR driver. (Seewiring diagram in the Mechanical design-in section.)Functions include: NFC antenna Occupancy sensor (PIR) Light sensor Infrared receiver LED indicatorEasyAir SNS200 is designed for a typical indoorenvironment (open/private offices, conference rooms,classrooms, corridors, etc.) in normally heated andventilated areas. EasyAir SNS200 has no protection againstaggressive chemicals or water. The sensor is normallymounted to a luminaire and is optimized for a sensormounting height of 2.5 m to 3 m.NFC antennaThe EasyAir SNS200 can be configured through NFC (nearfield communication) using a smart phone with the EasyAirSNS200 NFC app. NFC is the set of protocols that enableselectronic devices to establish radio communication witheach other by touching the devices together or bringingthem into proximity to a distance of typically 0.4”/1 cm orless. Parameters for lighting controls can all be configured.(See the Lighting control section.)RF antennaThe RF antenna allows communication via RF technology.It should not be covered by metal and should be exposedto free air to ensure there is sufficient range.Infared (IR) receiverThe infrared receiver serves as a communication portalfor the commissioning tools. EasyAir SNS200 with groupingfunctionality is enabled and commissioned (grouping) bya smart phone with the EasyAir SNS200 IR app.6Design-in Guide - EasyAir SNS200October 2019
Motion detectorThe occupancy sensor is a PIR (Passive Infrared) sensorthat detects movement with an X-Y cross-area under anangle of X 72 and Y 86 . Two types of movements canbe defined: Major movement: movement of a person walking into orthrough an area. Minor movement: movement of a person sitting at anoffice desk reaching for a telephone, turning the pages ina book, opening a file folder, picking up a coffee cup, etc.When installed in a typical office ceiling at H, the sensor issensitive to minor movements within X1 by Y1 area. It willrespond to minor movements down to a few centimetersat the task area of a desk and is sensitive to majormovements within a range of X2 by Y2. The maximumrecommended height to place the sensor in the ceiling is3 m to assure movement coverage and detection. The PIRsensor reacts on movement by means of a temperaturedifference, such as the human body temperature versus itssurrounding temperature. A car that just starts its engine isnot seen by the PIR nor does the PIR see people sittingwithin the car or a forklift truck. Therefore, it isrecommended not to use EasyAir SNS200 in outdoor,parking or industrial applications. Please refer to theEasyAir SNS200 datasheet for coverage area details.Therefore, it is recommended not to use EasyAir SNS200in outdoor, parking or industrial applications. Please referto the EasyAir SNS200 datasheet for coverage area details.HY2Y1X1X2Figure 1. Motion detection area. H: ceiling height. Minor movement detection area: X1 by Y1. Major movement detection area: X2 by Y2.7Design-in Guide - EasyAir SNS200October 2019
To prevent false triggers, the EasyAir SNS200 must bemounted more than 2 meters away from air vents in alldirections, see figures below: 2mLuminaire 2m 2m 2mSensor view shieldThe sensor comes with an occupancy view shield that canbe used to block the movement detection by the sensor ina certain area. The shield comes inverted. (See Figure 2.)This view shield can be pulled out, flipped and insertedback in the sensor and then rotated so the correct area isshielded off from the detection area. If such shield is notneeded in the application, it can be easily pulled out fromthe sensor or left inverted. Occupancy view shieldFigure 2. Sensor view shield.8Design-in Guide - EasyAir SNS200October 2019
Light sensorThe light sensor is a photo diode that reads average lightlevel captured under an angle of approximately 40 . Theintensity of the illuminance depends on the amount ofartificial and/or natural light supplied in the office, as well ashow this light is reflected toward the ceiling/sensor. TheEasyAir SNS200 converts the illuminance signal into ON/OFF or dimming commands to the Philips Xitanium SR LEDdriver in order to maintain a constant light level on the desk.PhotocellWindowhThe sensor should be installed with a minimum distance of0.6 m to the window to avoid the sensor looking outside.When the sensor is mounted too close to the window it willlook partly outside. Sun reflection from cars or snow canreflect directly into the sensor. The sensor will then measuresuch high illumination levels that it will drive the artificiallight to its minimal level or even switch off the artificiallights. The optimum distance [Y] from the window to EasyAirSNS200 can be obtained from Figure 4. This graph showsthe relation between the distance from the window to thesensor [Y] and the height [H] of the sensor (H, height of thesensor measured from ceiling to bottom of window sill).Windowsillfield of view( 0.7 x h)Figure 3. Sensor placement.Y (cm)Field of view230LED indicatorThe product contains a LED indicator. This is enabled bydefault, and it can be disabled through the app. Thebehavior of the LED is as follows:210190170150Yellow LED on: vacancy & light sensor are functional.130Red LED on: motion is detected and hold time is notexpired yet.110907050100 120 140 160 180 200 220 240 260 280H (cm)Figure 4. Sensor mounting height from window sill (Y) vs. sensor horizontal distance fromwindow sill (H).9Design-in Guide - EasyAir SNS200October 2019
Daylight calibration and System startupbehaviorDaylight Calibration1) The daylight calibration allows the sensor to dim downthe light levels when there is enough daylight available.The sensor comes in with an assigned value from thefactory as a calibration setpoint.2) Every time the device is powered up, a new sample forthe calibration setpoint is gathered and stored by thesensor following the current step (auto calibration): Light is switched on at maximum light level set by maxof AOC (adjustable output current of the driver). Light dims down to minimum dimming level. Sensor stores the value detected by the light sensor. Light dims up to maximum light level, which is set bythe field task level. Sensor stores the value detected by the light sensor. A calculation is executed, and calibration set point willbe adjusted. Light dims down to the task level that meets the setpoint3) The calculation for adjusting the calibration setpoint isdetermined as the average of last 5 samples with thefollowing assumption - maximum light output of theluminaire in a completely dark environment (i.e. nocontribution from ambient light source such as Sun)provides the desired lux level on the desk.4) The daylight calibration adjusts to task level. When auser changes task level via the app, he must power cyclethe sensor 5 times to reflect the change in calibrationsetpoint.Note: The group control/commissioning is not affected bypower cycling. In an application, the way of working couldbe as follows: Install luminaires Commission the sensors in groups Add switches if any Configure settings such as field task level, hold time, etc. Power cycle all the luminaires together 5 times to adjustthem to application lighting to determine the newsetpoint.System startup behaviorWhen the sensor is powered (mains of driver is switchedon or a momentary power dip is detected by the sensor),the sensor performs an auto-calibration routine asdescribed above.iWarning:Make sure no objects are blocking the sensor’s viewand no surface reflectance changes occur in thesensor’s view during auto-calibration.10Design-in Guide - EasyAir SNS200October 2019
Lighting controlEasyAir SNS200 enables stand-alone LED lighting systemswith integrated occupancy sensing and daylight harvesting.Grouping control is actiated through the Philips field app(EasyAir SNS200 IR) and adding wireless switches to thegroup. In addition to easily adding user control to a space,the grouping feature facilitates auto-off/manual-on usecases. Furthermore, advanced grouping allows scenesetting (e.g., presentation mode for a conference room), aswell as occupancy sharing (i.e., luminaires within a groupcan be programmed to remain at prescribed light levels solong as occupancy is detected anywhere in the group).Terminology used in this chapterAll parameters are stored in the sensor, and most of theparameters can be configuredthrough NFC or IR. Fade to switch on/off time Hold time Grace fading time Prolong time Field task level Background level Occupancy mode selection Eco-on level Group occupancy sharing (SNS200 or higher) Group light behavior (SNS200 or higher) Daylight based control Daylight dependent switching Daylight dependent overrideFade to switch-on time is the time (T1 to T2) from thepoint at which occupancy is detected until the lights dimup to the max light output. This timer is set to 0.7 sec andis not configurable.Hold time is the time (T3 to T4) from the point at which thelast movement has been detected (e.g., occupant left theroom) until grace time starts. This timer is set to 15 minutesby default and can be configured from to 1 – 120 minutes.11Design-in Guide - EasyAir SNS200October 2019
Grace fading time is the time from T4 to T5 during whichthe lights are being dimmed down from the current lightlevel to the background level. By default, grace fading timeis 10 sec and can be configured to 0 – 25 seconds.Prolong time is the time from T5 to T6 at which thebackground level is maintained at a fixed level. Defaultprolong time is 15 minutes and can be configured from 0– infinity.Fade to switch-off time is the time (T6 to T7) for the lightsto fade from background level to off after prolong time isexpired. This timer is set to 0.7 sec and is not configurable.Field task level is used to configure the required light levelon the task plane. Setting this to 100% enables theinstalled maximum light level. A lower percentage level canbe configured to set the new maximum light level of theluminaire through the app. (See Task tuning.)Eco-on level is a configurable switch-on light level. Thisparameter also enables partial-on occupancy basedcontrol to meet energy code. Eco-on level should be apercentage level between the field task level andbackground light level.Background level is a light level significantly lower than100%, used to save energy when space is not occupied.Occupancy mode selection can be configured to maximizecontrol flexibility with adding wireless switches. The modeoptions are auto-on/auto-off, manual-on/manual-off andmanual-on/auto-off.Group occupancy sharing is a configurable feature to allowEasyAir SNS200 to share its local occupancy detectionstatus and control lights accordingly. As long as presence isdetected within the group, the luminaires stay on at thebackground light level in non-occupied areas.Group light behavior is a configurable light level for theluminiares in non-occupied areas while there is occupancydetected elsewhere in the group. Lighting controloverview.12Design-in Guide - EasyAir SNS200October 2019
Occupancy-based lighting controlSwitch On level (fixed)Fade toswitch on(fixed)Prolong time(configurable)itchto swFade (fixed)LIGHT LEVELBackground level(configurable)ingad ble)efac uraGr nfig(coHold time(configurable)offT1T2Switch On sequenceT3T4T5T6 T7Switch Off sequenceAuto-on/off mode: Lights are switched on and offautomatically based on occupancy detection and timedelay settings.Manual-on/auto-off: Lights are turned on manuallythrough a wireless switch and turned off automatically, asa vacancy sensor.Manual-on/off: Lights are turned on and off manuallythrough a wireless switchwhile occupied.Task tuningField task tuning is a feature to reduce the maximumoutput of a luminaire to a certain percentage of the AOC(adjustable output current) of the driver. After installation,there is a possibility that the task light level is not setaccording to the end user needs (light level too high). Tasklight level can be adjusted by the installer or buildingmaintenance personnel to a value between 5% and 100%of the max setting through the app.Occupancy-based lighting control is enabled by default forthe EasyAir SNS200, and it can be disabled using an appthrough NFC.13Design-in Guide - EasyAir SNS200October 2019
Daylight harvestingDaylight-based control is enabled by default. The lightsensor auto-calibrates when power to the driver is cycled.The light level of the luminaire is bound by field task level(maximum light level) and background level (minimum lightlevel). If the background light level is set to be 20%, duringdaylight harvesting, the light will only dim to 20%.Daylight-based control is not active after hold time of theoccupancy sensor expires. Figures 6 and 7 show examplesof lighting control using both daylight and occupancy. Inboth figures, eco-on level field task level. If eco-on levelis lower, then the maximum light level will be the eco-onlevel. When the daylight level is low (Figure 6) and anoccupant is present, the luminaire light level is the fieldtask level minus the daylight level. Assuming the incomingdaylight level is constant, luminaire light level remains thesame until hold time expires, then it will fall to thebackground light level. When the daylight level is high, theluminaire light level is the field task level minus thedaylight level. However, when there is an abundance ofdaylight, the luminaire light level does not dim lower thanthe background light level (Figure 7).Low daylight levelBackground light levelField task levelDaylight levelOccupancy levelLight level of the luminaireLight level of the luminaire Field task level - daylight levelFigure 6. Lighting control behavior with low daylight level.14Design-in Guide - EasyAir SNS200October 2019
Background light levelField task levelDaylight levelOccupancy levelLight level of the luminaireFigure 7. Lighting control behavior with high daylight level.Daylight dependent overrideWhen daylight based control is enabled (by default) and ifoccupancy is detected, the luminaire(s) remains alwaysswitched on at the calibrated light level based on daylightharvesting as discussed above. In case enough daylight isavailable, this leads to the reduction of unnecessary energycosts. With Daylight dependent override (DDO)functionality, in the presence of sufficient daylight alongwith occupancy detection, the luminaire(s) will not switchon until the daylight levels become insufficient i.e. belowthe daylight regulation setpoint. From that moment, theoutput light levels are switched on and adjusted tocompensate the lack of daylight. In this way, energy costsare re
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