Manual 2100-680
Page
11 of 18
PASSIVE INFRARED SENSOR
Initially, the room controller is in Stand-by mode and
Stand-by setpoints are used. When the Passive Infra-
Red (PIR) sensor detects motion, the Occupancy
status switches to Occupied and the Stand-By Time
timer is reset. The Occupied setpoints are used for this
operation. If no motion is detected in the room for the
entire Stand-By Time duration (adjustable parameter),
the room switches to Stand-by mode and Stand-by
setpoints are used. While in Stand-by mode, if no
motion is detected for the entire Unoccupied Time
period (adjustable parameter), the room switches to
Unoccupied mode and uses its Unoccupied setpoints.
140
O
Top view
Side view
Lateral movement
Forward movement
15
O
15
O
20 ft (6 m)
20 ft
16 ft
Top view
20 ft (6 m)
140
O
13 ft
20 ft
16 ft
13 ft
Fresnel lens beam and detection field
(6 m)
(5 m)
(4 m)
(6 m)
(5 m)
(4 m)
20 ft (6 m)
60
O
25
O
25
O
15
O
15
O
While in Stand-By or Unoccupied mode, any motion
switches the room back to Occupied mode.
The PIR sensor is located near the bottom of the front
of the BrightStat controller. Make sure there are no
obstructions in front of the sensor.
PIR ranges measure 20' (6 meters) at 140° and 13'
(4.5 meters) minimum between 15° to 30° laterally.
A typical installation height of approximately 5' (1.5
meters) is considered in these measurements.
The below illustrates the resolution.