Busch-Watchdog presence detector Type: 6131-74-101

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ABB i-bus ® EIBBusch-Watchdog presence detectorType: 6131-74-101Switch Value Cyclic HVACMonitoring /1Selection in ETS2– ABBPhys. SensorsPresence detectorUsing the application, the presencedetector can sense movement in itsfield of detection and send switching orvalue telegrams.The application makes twoindependent channels available. Onecan be used to switch on the lightingwhile the other channel can switch onan HVAC system. The presencedetector also has a monitoringfunction.When assigning parameters, it shouldbe noted that some parameters (ifrequired) are only visible in the “HighAccess” setting and can only then bemodified.SwitchThe presence detector sendsswitching telegrams to itscommunication objects “Movementchannel ... / Telegr. switch” as soon as itrecords movement in its detectionarea. The value of the switchingtelegram can be set with the parameter“Sending at detection”. It is possible tosend an “ON telegram”, an “OFFtelegram” or “no telegram” ondetection of movement. The “On” or“Off” telegrams can also be sentcyclically.If the presence detector no longerdetects any movement once therecovery time has elapsed, it ispossible to send an “ON telegram”, an“OFF telegram” or “no telegram”. The“On” or “Off” telegrams can also besent cyclically. The behaviour isspecified with the parameter “Telegramafter recovery time”.Each channel of the presence detectorcan be enabled/disabled separately.The communication objects“Movement channel ... / Activation” areused for this purpose. The objects canbe made visible with the parameter.If the presence detector receives atelegram at this object, the presencedetector is activated or deactivated.With the parameters “At .... themovement”, it is possible to selectwhether a telegram is sent once atmovement or once after detection ofmovement or no telegrams are sent viathe communication object “Movementchannel ... / Telegr. switch”.Example:In a functional building, all thepresence detectors should be enabledat a specific time in the morning. A “1”is therefore sent to a central locationwith a time switch and then received atthe communication objects “Movementchannel ... / Activation”. In this example,the parameter “Activation objectmovement” is set to “ON telegram”.ValueValue telegrams can also be sent ondetection of movement. To do so, theparameter “Type of movement object”must be changed from “Switching(EIS 1)” to “Value (EIS 6)”. Dimmingactuators can thus be dimmed to avalue that is lower than the maximumvalue e.g. in order to dim on with baselighting.The value that is sent is defined withthe parameters “Sending at thebeginning/end of detection”. It is alsopossible to select that no telegramsare sent.CyclicAll switching telegrams can also besent cyclically. It should be ensuredthat the respective parameter setting“ON telegram cyclically” or “OFFtelegram cyclically” is selected.The total cyclic time can be set usingthe parameters “Time base for cyclicalsending” and “Time factor for cyclicalsending”.The period in which a telegram isrepeated cyclically is composed of abase and a factor:Cyclic time= Base * FactorMay 2002 2 - 83
ABB i-bus ® EIBBusch-Watchdog presence detectorType: 6131-74-101Channel adjustmentsThe setting of the threshold for the lightsensor as well as the recovery timecan be carried out using thepotentiometer at the back of thepresence detector. There is a separatesetting aid for this purpose. Theillumination threshold is defined forchannel 1 with the “Lux1potentiometer”. The “HVACpotentiometer” sets the OFF delay forthe HVAC channel. The “Illuminationpotentiometer” sets the recovery timefor both channels.Alternatively, the settings can becarried out in ETS. To do so, theadjustment parameters should bechanged from “... potentiometer” to“ETS”.With the parameter “Thresholdillumination adjustable with”, thebrightness value that triggers thepresence detector can be indicated.Values between 5 lux and 1000 luxcan be entered. The recovery time canbe set with the two parameters “Timebase of recovery time” and “Time factorof recovery time”. The recovery time isproduced from the base and the factor:Recovery time = Base * Factor.Brightness-dependent switchingA further communication object can beenabled for the first channel with theparameter “Activation objectbrightness dependent switching”. If thecommunication object “Brightnessdependent switching channel 1”receives a “1”, the presence detectorswitches on without dependence onbrightness. The threshold settings thathave been carried out with thepotentiometer at the rear of the deviceor with ETS, do not have anysignificance for the duration of theactivation. If a “0” is received at theobject, the presence detector onlysends “On” telegrams again once thebrightness value has fallen below theillumination threshold.Light sourceWith an increasing proportion ofexternal light, the presence detectorsends an “Off” telegram as soon as theexternal light has reached the requiredilluminance. The type of light sourcemust be indicated for this purpose.Example:Illuminance 500 luxThe illumination threshold of 500 lux ispreset via the potentiometer on thepresence detector or via the ETSprogram.If movement is now detected in a darkroom in the morning and thebrightness value lies below 500 lux,the presence detector sends an “On”telegram when it records movement.a) switched light source:When the luminaires are switched on,they generate a luminance of 500 lux.The external light coming in is addedto this. The presence detector switchesoff if it measures a luminance level of1000 lux.b) controlled light source (constantbrightness):If a conventional constant brightnesscontroller is built into the luminaires,this regulates the proportion of artificiallight so that the measured luminancestays constant at 500 lux. If thepresence detector now records ameasurement of more than 500 lux,the luminaires have already beendimmed down to the minimumbrightness value and are switched off.MonitoringIt is possible to activate a monitoringfunction. To do so, the generalparameter ”Monitoring function” mustbe set to “yes”. The monitoring functionrepresents a “quasi alarm signal”which is not triggered when thesmallest thermal movement is detectedbut when a strong energy source isregistered by the presence detector ina short space of time or several weaksources are detected during a longerperiod.2 - 84 May 2002
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Busch-Watchdog presence detector Type: 6131-74-101

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