Rockwell Automation 440L GuardShield Type 2 Safety Light Curtain User Manual - Manual (Page 14)

GuardShield™ Type 2 Safety Light Curtain Installation Instructions
12
R
Original instructions
Troubleshooting Guide
The light curtain carries out an internal self-test after startup. If an error
occurs, an appropriate signal combination is sent through the LEDs to
the transmitter and receiver.
Condition
No. Error Description Action
6 Internal fault, receiver • Replace receiver
7
Internal fault, transmitter • Check connections transmitter/
receiver
• Exchange transmitter
8
External fault • Check connections of OSSD
outputs for short circuit against
+24V DC and GND (cable,
connected devices)
• Replace receiver
9
External fault (MPCE error)
The function Relay monitoring is
activated and after clearing the OSSD
the input Relay monitoring does not
recognize a change of state. • Check connection Relay
monitoring
• Check connected relay for closed
contact (if OSSD ON—input Relay
monitoring must have GND level,
if OSSD OFF—input Relay
monitoring must have +24V)
• Switch on only after POWER OFF/
ON