Schneider Electric 840 USE 106 0 manual Additional Checks, Recognizing

Maintenance

Additional Checks

Checking on a	If you have a redundant power supply, you may use the STAT block to check its
Redundant	operation. The redundant power supply must be I/O mapped for its status to be
Power Supply	displayed. The I/O module status section of the STAT block begins at word 12.
Responding to
	When a CHS 110 Hot Standby module experiences an error, it takes its controller
and Recognizing	offline. It does not communicate with the other CHS 110 module or take part in state
Errors	RAM data transfers.
	The LEDs on the front panel of the module can help you locate the source of the
	error. The display pattern tells you which controller is experiencing problems and
	what kind of error is occurring. There are four kinds of errors associated with the Hot
	Standby system:

Startup errors

Communication errors

Communication errors

lInterface errors Board-level errors

For each type of error, try the suggested remedies in the order given. If no remedy suggested here resolves the error, call Schneider Electric customer support at 1-800-468-5342 for further directions.

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