CP Electronics EBDSM-PRM User Manual

Product Guide

EBDSM-PRM

Ceiling PIR presence/absence detector

The EBDSM-PRM PIR (passive infrared) presence detector
provides automatic control of lighting loads with optional
manual control.

The output channel comprises a mains voltage relay
capable of simple on/off switching.

Functioning as a presence detector, the unit can turn lights
on when a room is occupied and off when the room is
empty. Optional settings allow lights to be turned off in
response to ambient daylight.

All functionality is fully programmable using an IR handset.

Overview

Front features

Back features

Power Input
& Switched
Output
connections

Sensor Lens

which covers...

PIR Sensor

IR Receiver

Light Level Sensor

Status LEDs

Switch Input

Connector

Features

PIR Sensor

Detects movement within the unit’s detection range,

allowing load control in response to changes in occupancy.

IR Receiver

Receives control and programming commands from an
IR (infrared) handset.

Light Level Sensor

Measures the overall light level in the detection area

Status LEDs
The LED flashes Red to indicate the following:

Walk Test LED active

Valid setting received

Power Input & Switched Output Connector

Used to connect mains power to the unit and to connect a
switched load.

Switch Input Connector

Two input terminals can be used to manually override the
lights on or off.

when movement is detected

Power Input
& Switched
Output Connector

Detection diagram

Area of lower sensitivity Area of high sensitivity

Sensor functionality

Detection Mode

The Detection Mode can be set to behave in Presence or Absence mode:
 Presence When movement is detected the load will automatically turn on. When the area is no longer occupied the

load will automatically switch off after an adjustable time period.

 Absence The load is manually switched on. When the area is no longer occupied the load will automatically switch

off after the adjustable time period has elapsed.

In either case, sensitivity to movement of the PIR sensor can be adjusted using the Sensitivity parameter.

HINT: To assist in setting the Sensitivity, turn on the Walk Test LED which will flash red when movement is detected.

Switch Level On/Off

Occupancy detection can be made dependant on the ambient light level using the Lux On Level and Lux Off Level
parameters.

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Choosing a Suitable Location

The EBDSM-PRM is designed to be ceiling mounted and must satisfy the following criteria:

 Avoid positioning the unit where direct sunlight may enter the sensor element.

 Do not site the sensor within 1m of any lighting, forced air heating or ventilation.

 Do not fix the sensor to an unstable or vibrating surface.

Installation

Absence detection

 To use absence detection a retractive (momentary) switch must be connected between the 2 terminals on the

diagram. Note that this will be switching mains voltage.

 The unit ships with presence detection as default. To change to absence detection, press and release the external

switch 5 times within the first minute of power up. The LED will turn on solid for 30 seconds to indicate absence
mode has been selected.

 To change back to presence detection, repeat the above procedure—the LED will flash for 30 seconds to indicate

presence mode has been selected.

Note: the above adjustments can also be made using the UHS5 or UNLCDHS handsets. See Programming sections.

Power-up test procedure

When power is applied to the unit, the load will turn on immediately.

Set the timeout to 10 seconds, vacate the room or remain very still and wait for the load to switch off .

Check that the load switches on when movement is detected.

The unit is now ready for programming.

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