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GuardShield™ Type 2 Safety Light Curtain Installation 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
6
Internal fault, receiver
Internal fault, transmitter
7
External fault
8
External fault (MPCE error)
The function Relay monitoring is
activated and after clearing the OSSD
the input Relay monitoring does not
9
recognize a change of state.
12
Action
• Replace receiver
• Check connections transmitter/
receiver
• Exchange transmitter
• Check connections of OSSD
outputs for short circuit against
+24V DC and GND (cable,
connected devices)
• Replace receiver
• 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
Original instructions
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