Omron MS4800E - Receiver Troubleshooting Guide; Receiver Error Codes and Corrections

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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 (red 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 SECTION 11 Connection
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 7-2 Operating mode selec-
tion 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 SECTION 12 Muting 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