Troubleshooting - Pepperl+Fuchs SLCS Original Instructions Manual

Safety Light Curtain SLCS

Troubleshooting

8 Troubleshooting
8.1 Troubleshooting
Note!
Always carry out a function check on the device after correcting a fault.
If a fault occurs, press the test contact (Reset). The receiver removes the fault
state by performing a system reset.
If this process does not correct the fault, attempt to return to normal mode by
switching off the power supply for at least 1 second, then switching it back on
again.
Eliminating Interference
Source of fault
Transmitter:
Status indicator flashes at
1 Hz
Transmitter:
Status indicator flashes at
5 Hz
Receiver:
Status indicator flashes at 5
Hz
Receiver:
Status indicator flashes at
2.5 Hz
Receiver:
Status indicator flashes at 1
Hz
Receiver:
OSSD status LED lights up
red
Receiver:
"Ready to start" status
indicator cannot be
acknowledged
Cause
External fault:
a) Test signal faulty
b) A/B mode input error
Internal error
Internal error
Insufficient function
reserve
External error:
a) Relay monitor error
b) Low voltage
c) A/B mode input error
d) OSSD error
Beam interrupted or
adjustment error
Faulty restart button
connection
Action
a) Check test sequence
b) Check wiring A/B input
mode
Briefly interrupt power
supply or press the restart
button. If the error occurs
again, send for repair.
Briefly interrupt power
supply or press the restart
button for approx. 1.5 s. If
the error occurs again,
send for repair.
Clean the front panels;
adjust the transmitter and
receiver.
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
Remove object from
protection field or adjust
transmitters and receivers.
Check restart connection
EN - 25
EN