8 LED displays and troubleshooting
| Safe power-feed modules
91
u-remote IP20 modules for functional safety manual
1484600000/04/06.2017
8.3 Safe power-feed modules
UR20-PF-O-1DI-SIL
LED
Status
Recommended action
Status LED
Red:
–
Module has not been snapped properly
–
Error in the supply voltage
–
Channel error
–
Check that the module has been snapped into place properly
–
Check supply voltage:
1. check +24 V input current path
2. check voltage on plug 4.3; in case of cascading 0 V might be properly,
therefore this is not an error
–
Check channel error
–
Overload at the
24 V Safe
output level
–
Remove cross connection at
24 V Safe
–
External feed-in recognised from field side
–
Measure voltage at
24 V Safe
(4.3) vs. GND (4.4)
If a voltage is present, check the wiring!
Attention
: safety hazard! Shut down the system and prevent it from
switching on again!
–
Internal error detected
–
Module might have switched off caused by overtemperature; check the
temperature inside the switch cabinet
–
Perform a cold start within 24 hours
If the error has not been fixed, send the module to Weidmüller for a technical
examination
–
Interruption in one of the two safety loops of a safety circuit for at least
3 seconds.
–
Check safety circuit for interruptions if an interruption of the safety
channel is not part of the application
–
Cross connection between the safety loops for at least 3 seconds.
–
Check safety circuit for cross connections
1.1
Off: Safety circuit 1 interrupted
Yellow: Safety circuit 1 OK
Check safety circuit 1
4.2
Off:
24 V Safe
not active
Yellow:
24 V Safe active, 24 V DC at output
4.3
Green: Feed-in voltage in valid range
Содержание UR20-4DI-4DO-PN-FSOE
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