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Variable air volume controllers
Operation
A. Standby
After the warm up time expires, the sensor enters into
standby mode. The detector will check whether both
delays are properly set. If not, the green LED will blink to
indicate.
B. Relay ON Delay
Relay ON delay is the time given to sensor to verify true
occupancy before activating the relay output. Any further
detection during ON delay will NOT reset the timer.
Installation and Wiring
N.B. Do not install where the detector is exposed to direct
sunlight or directly above strong sources of heat. Make sure
the detection area does not have any obstruction (plants,
large pieces of furniture, curtains etc.) which may block the
detection.
Installation (see also picture beside)
1. Mount the base of mounting bracket on the selected
position. Lead the cable through the access tunnel of
mounting bracket or through the knockout openings
2. Open the front cover by loosening the locking screw at
the bottom. Lead the cable into the unit and assemble the
mounting bracket with the unit.
Connect the cable to the corresponding terminals according
to the instructions below.
4. Replace the front cover and then proceed with the walk
test.
C. 1-minute Waiting
When Relay ON delay expires, the sensor enters into a
1-minute waiting time. If no detection occurs within 1
minute, the sensor will return to standby mode. If any
detection occurs, then relay output will be activated and
Relay OFF delay will be started.
D. Relay OFF Delay
Relay OFF delay is the time of relay activating. Every
detection during this period will reset the timer
(NC-COM-NO: Outputs for On-
Off control of fan coil operation.)
Walk Test
Apply power supply and allows 25 seconds for sensor to
warm up. The green LED will blink during warm up period.
Walk across the detection zones (invisible) at normal speed.
The red LED will blink whenever the sensor detects the
motion.
