2
7
1
6
9
5
2
0
1
7
-1
2
34
SLCT* and SLCT*/35 safety light curtains
Troubleshooting
Eliminating Interference
Source of fault
Cause
Action
Transmitter:
Status indicator flashes
at 1 Hz
External fault:
a) Test signal faulty
b) A/B mode input error
a) Check test sequence
b) Check wiring A/B input mode
Transmitter:
Status indicator flashes
at 5 Hz
Internal error
Briefly interrupt power supply or
press the restart button. If the error
occurs again, send for repair.
Receiver:
Status indicator flashes
at 5 Hz
Internal error
Briefly interrupt power supply or
press the restart button for
approx. 1.5 s. If the error occurs
again, send for repair.
Receiver:
Status indicator flashes
at 2.5 Hz
insufficient functional
reserve
Clean the front panels;
adjust the transmitter and receiver.
Receiver:
Status indicator flashes
at 1 Hz
External error:
a) Relay monitor error
b) Low voltage
c) A/B mode input error
d) OSSD error
a) Check relay monitor connection
b) Check the supply voltage
c) Check A/B input mode wiring
d) Check the OSSDs for crossed
or short circuits
Receiver:
OSSD status LED
lights up red
Beam interrupted or
adjustment error
Remove object from protection
field or adjust transmitters and
receivers.
Receiver:
"Ready to start" status
indicator cannot be
acknowledged
Faulty restart button
connection
Check restart connection