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Rockwell Automation Publication 442G-UM001B-EN-P - May 2016
Appendix A
Troubleshooting and Assistance
• Different potentials at the fence and door, which causes compensating
currents that could lead to this error message.
Remedy (in case of EMC interference or potential differences):
1. Check the area of use regarding increased EMC radiation or lack of
grounding connections of the protective enclosure.
2. Switch off the voltage at all devices
or
press the reset button (if present) that controls ALL integrated reset inputs
in the series connection.
3. Switch the voltage on again
or
release the reset button.
4. Wait until the State LED flashes at regular intervals.
The Access Box is now ready for operation again.
Remedy (in case of hardware fault in the handle assembly):
Replace the handle assembly and repeat the instructions for the handle
configuration (see
Handle Configuration on page 15
). Tip: Close the guard
door and activate guard locking to avoid interruptions during the handle
configuration.
DIA LED Illuminated and State LED Flashes Four Times
Fault:
Output fault.
Possible causes:
• The connected control system and the Access Box does not have a
common reference potential (common ground).
• A ground loop is produced by bridges having been installed both on the
Access Box and in the control cabinet.
• The internal output circuit is damaged.
• 24V DC or 0V is present at one of the two safety outputs during the
switch-on process.
• A safe control system with clocking outputs is connected.
Remedy:
1. Check the wiring and correct it.
Power
State 4 x flash
DIA
Lock