35
UK
13.2 Fault diagnosis receiver
LED
Possible cause
Troubleshooting
red
2 consecutive
pulses
Wrong configuration Check connections.
red
3 consecutive
pulses
Feedback external
contactor missing
Check the connection to the external
feedback contacts.
red
4 consecutive
pulses
Interfering
transmitter detected
Find interfering transmitter and take one
of the following measures:
-Reduce the range of the interfering
transmitter from high to low.
-Exchange position of transmitter and
receiver.
-Change location of the interfering
transmitter so that the receiver is not
influenced.
-Screen the beams coming from the
interfering transmitter using a mat
protective device.
red
5 consecutive
pulses
Fault
OSSD outputs
Check connections.
If the defect remains, send device to ifm
branch for repair.
red
6/7 consecutive
pulses
Internal fault
Send device to ifm branch office for
repair.
yellow
Weak signal
-Check alignment of transmitter and
receiver.
-Clean protective tube, check range.
-Waiting for restart pulse.
