Note:
If the receiver cover is detached while power is supplied,
or if power is discontinued for longer than two weeks (but the
cover is still in place), the auto-gain automatically resets to
maximum sensitivity. (Gain is automatically locked when power
returns).
Tone indicator
This feature provides audible testing or signals for the items
listed in the table Tone indicator below.
Table 2: Tone indicator
Test/Signal
Alignment
tone
switch
Beam
ON
alignment
Auto-gain
ON/OFF
lock
Walk test
ON
Alarm
ON
memory
Response time changeover function
See Figure 20.
Response time (sec.). 1. Response 0.05 sec: running. 2.
Response 0.3 sec: walking quickly; 3. Response 0.7 sec:
walking.
This feature is used to modify the response time of the beam to
best suit the application. The unit doesn't detect passing
objects faster than the set response time.
Environmental module
The environmental signal is initiated if the beam reception level
is reduced by around 50% or more. The module "watches" for
a gradual degradation of the beam reception, which indicates
extremely poor weather conditions. Select NC or NO signal
output. Contrast capacity 30 VAC/VDC, 1 A or less.
NO
NC
Alarm memory function
See Figure 22.
P/N 1077839 • REV 1.0 • ISS 13JUN11
Other
Description
condition
Receiver
Reception strength
cover
monitored.
detached
Tone pitch increases as
reception improves.
Note:
No tone is given if
sensitivity attenuation
LED is lit or if the receiver
cover is attached.
After
Short tone indicates that
receiver
the lock is set.
cover is
Continuous tone (20 sec.)
attached.
indicates readjustment.
For approx.
Tone is linked to the
5 min. after
alarm LED.
gain is
Both trip simultaneously.
locked.
Set to
"Beep" is indicated if
manual
alarm condition occurs.
memory.
Note: This configuration
is not recommended for
most security
applications. The tone
could alert the intruder to
detection.
Figure 22 description
1
Alarm output
2
Memory LED
3
Alarm memory input
4
Logic L
5
Logic H
6
Beep sound at beam interruption (alignment tone ON)
The alarm memory LED shows which sensor has triggered
when two or more sensors are placed on a zone. An audible
tone can also be selected. Reset can be automatic or manual.
Auto reset:
The memory LED will light for five minutes after an
alarm signal and then continues to flicker for 55 minutes before
returning to normal mode. If additional alarm signals are
triggered, the process repeats.
Manual:
The memory LED lights with the reset button switched
over. The memory is reset manually by a reset button opening
(L) or closure (H). The reset button can be placed in any
convenient location on the premises.
Tone alarm with LED:
If an audible signal is desired in
conjunction with the memory LED, turn the alignment tone
switch to ON.
Note:
If the alarm memory function is not used, set the
memory selector to "manual" and leave the receiver terminal
unconnected.
Memory selector (auto-reset - manual)
Manual memory logic switch (H - L)
External dimensions
See Figure 23.
Troubleshooting
Problem
Possible cause
Operation
No power supply.
LED does
not light.
Bad wiring connection or
broken wire (short).
Alarm LED
No power supply.
does not
light when
Poor wiring connection or
the beam is
broken wire (short).
broken.
Beam is reflected on to
another object and sent
to the receiver.
Two beams are not
broken simultaneously.
The beam interruption
time is shorter than the
set response time.
Alarm LED
Beam alignment is out.
continues
Shading object between
to light.
the transmitter and the
receiver.
Unit optics are dirty.
Remedy
Turn on the power.
Check and correct the wiring.
Turn on the power.
Check and correct the
wiring.
Remove the reflecting
object or change the beam
direction.
Break two beams
simultaneously.
Adjust the beam response
time.
Check and adjust again.
Remove the shading
objects.
Clean the optics with a soft
cloth.
9 / 43