User Documentation

8 LED displays and troubleshooting | Safe I/O modules
90 1484600000/07/11.2020u-remote IP20 modules for functional safety manual
UR20-8DI-PN-FSOE, UR20-8DI-PN-FSOE-V2, UR20-8DI-PN-FSPS, UR20-8DI-PN-FSPS-V2
LED Status Recommended action
Status LED Red:
– Module has not been snapped properly
– Error in the supply voltage
– Check that the module has been snapped into place properly
– Check supply voltage
– Internal error detected – Module might have switched off caused by overtemperature; check the
temperature inside the switch cabinet
If the error has not been xed, send the module to Weidmüller for a technical
examination.
– Safety address is not set properly – Check the safety address (e.g. via the web server)
– If no address is displayed in the web server set the safety address again
as described in section 3.5
– Communication failure – Check wiring
– Restart the coupler
Flashes alternating red and green.
– 3s green / 1s red: Module is waiting for parameters from the safety
control (e.g. after the power up) or safety address is not set according
to the project plan
– 1s green / 1s red: Error pending
– Intervention via the safety control is needed
1.1 / 1.4
2.1 / 2.4
3.1 / 3.4
4.1 / 4.4
Yellow: Input 0 / 1 active
Yellow: Input 2 / 3 active
Yellow: Input 4 / 5 active
Yellow: Input 6 / 7 active
1.3
2.3
3.3
4.3
Red: Error input 0 / 1
Red: Error input 2 / 3
Red: Error input 4 / 5
Red: Error input 6 / 7
– At least one AUX-O is overloaded or short circuit with the supply voltage
– Readback error on the test pulses of at least one input (e.g. caused by
external short circuit)
– The parameterised discrepancy time of this pair of inouts has been
exceeded
– Check wiring
– Check parameterisation
If the error has not been xed, send the module to Weidmüller for a technical
examination.