ENFORCER Twin Photobeam Detectors
SECO-LARM U.S.A., Inc.
11
Distance (d)
Beam spread (s)
90ft (30m)
2.7ft (0.8m)
190ft (60m)
5.7ft (1.7m)
290ft (90m)
8.7ft (2.7m)
390ft (120m)
11.7ft (3.6m)
The beam spread (s) can be calculated as s=0.03xd.
Situation Possible
Solution Solution
Transmitter LED does not
light.
Incorrectly wired and/or insufficient
voltage.
Ensure the power supply to the
transmitter is 12 to 24 VAC/VDC.
Receiver LED never lights
up when the beam is
interrupted.
a. Insufficient voltage.
b. Beam reflected away from receiver.
c. Beams not simultaneously interrupted.
a. Double-check the voltage.
b. Clean the cover.
c. Check overall installation.
Beams interrupted and LED
lights, but no alarm trigger.
Alarm trigger cable may be cut, or the
relay contact stuck due to overloading.
Check the continuity of the wiring
between the sensor and the alarm.
Alarm LED continuously lit.
a. Lenses out of alignment.
b. Beams are blocked.
c. Cover is foggy or dirty.
a. Realign the lenses.
b. Remove any obstacles.
c. Clean the cover.
Alarm trigger becomes
erratic in bad weather.
Lenses out of alignment.
Check overall system installation.
If still erratic, realign the lenses.
Frequent false triggers from
leaves, birds, etc.
a. Too sensitive.
b. Bad location.
a. Reduce the response time.
b. Change the transmitter and/or
location.
Fig. 12: Dimensions
Table 6: Troubleshooting
Front View
Rear View
2.9" (74mm)
6.
8" (173mm)
beam spread (s)
Transmitter Receiver
distance (d)
Fig. 13
:
Beam Spread
Top View
Side View
43ST Pole size
2.8" (72mm)