72
Receiver Troubleshooting
Section 17-4
17-4 Receiver Troubleshooting
If the yellow INTERLOCK LED is blinking:
1.
Check the configuration for External Device Monitoring. If EDM is inactive
(via receiver dip switch), the input (pink wire) must be connected to system
ground. If EDM is active, the input must be connected to the normally
closed contacts of the control relays of the guarded machine or the monitor
terminal of the safety relay unit. Please refer to
to the Machine Control Circuit
for an example.
2.
Make sure both selector switches in the receiver endcap have been set
properly and identically. Please refer to chapter
for further information.
3.
Verify the power supply is within the specified limits (+24V ±20%).
4.
Verify the light curtain is properly connected to the control relays of the
guarded machine. If the light curtain is not intended to be connected to
control relays, see
for further information.
5.
Verify the control relays are within operating limits of the safety outputs.
6.
Verify the cable lengths from the light curtain to the control relays are within
specified limits.
7.
If this does not solve the problem, please contact your local Omron distrib-
utor or the European Repair Center.
17-5 Receiver Error Codes
Code Group
Error Code
Description of Error Code
Corrective Action Needed
Configuration
Switch Faults
21
Invalid mode selection setting
Verify switch setting, see user manual
22
Configuration switch settings changed dur-
ing operation
Verify switch setting, see user manual
23
Configuration switch settings do not match
Verify switch setting, see user manual
24
Corrupted EEPROM configuration
Reset the system configuration to factory
defaults
26
Invalid scan code setting
Verify switch setting, see user manual
Safety Output
(OSSD) Faults
31
Safety outputs 1&2 are shorted together
Check and correct wiring of safety outputs 1
and 2
32
Safety output 1 is shorted to power
Check and correct wiring of safety outputs 1
33
Safety output 2 is shorted to power
Check and correct wiring of safety outputs 2
34
Safety output 1 is shorted to ground
Check and correct wiring of safety outputs 1
35
Safety output 2 is shorted to ground
Check and correct wiring of safety outputs 2
EDM Faults
41
EDM circuit did not open before transition to
MACHINE RUN state
Check and correct EDM wiring
42
EDM circuit did not open after transition to
MACHINE RUN state
Check and correct EDM wiring
43
EDM circuit was in wrong state during
power-up
Check and correct EDM wiring
44
EDM fault at power-up
Check start input wire or EDM function
selection
Controller Fault
50
Control logic fault
Please contact your local Omron distributor
or the European Repair Center
Setup Error
60
Possible crosstalk
Check and correct scan code setting
Muting Faults
70
General muting fault
Check wiring of unused mute sensors
71
Mute module enable and configuration
required:
Check mounting of mute sensors for correct
sequence
74
Mute lamp burned out or not connected
Check status of mute lamp
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