Concept
Motion Detection
The RP Series expansion multi-sensor supports motion detection through a passive infrared sensor.
The sensor is designed to detect the motion of people. For example, the sensor can be used to automatically turn on the lights when a person enters a room and to turn off the lights when the person has left the room.
The multi-sensor uses a quad-type passive infrared (PIR) sensor with Fresnel lens. The sensor detects the amount of change in infrared radiation that occurs when a person moves, by sensing the difference in temperature between the human body and the floor, walls, and other objects in the background.
The sensor detection range depends on which height the sensor is mounted, as shown in the following figure and table.
|
Sensor mounting height |
Sensor detection range (diameter) |
|
3.0 m (10 ft) |
8.6 m (28 ft) |
|
2.7 m (9 ft) |
8.0 m (26 ft) |
|
2.5 m (8 ft) |
7.4 m (24 ft) |
The multi-sensor is designed to be installed with the passive infrared sensor facing down. For example, the multi-sensor can be installed into a dropped ceiling, on a drywall ceiling, or on a junction box (when there is no ceiling and space is opened to plenum). For more information, see RP Series Expansion Multi-sensor Device Installation . Installing the multi-sensor on a wall will reduce the coverage range of the passive infrared sensor.
The motion detection sensitivity needs to be tuned on site during commissioning. The tuning is done by measuring the sensitivity and then entering a sensitivity value in the EcoStruxure Building Operation software. For more information, see Configuring the RP Series Expansion Multi-sensor Passive Infrared Sensor .
RP Series Expansion Modules and Multi-sensors
RP-C-EXT-MS-BLE
RP Series Expansion Multi-sensor Device Installation
Configuring the RP Series Expansion Multi-sensor Passive Infrared Sensor