8-5
Earth fault diagnostics, continued
General
guidelines
• Location Earth Fault Searches optionally allow exclusion of auxiliary power circuits from
the search, so that modules connected to the 24V auxiliary outputs can remain in operation
during the search.
• The option to exclude auxiliary power circuits does not apply to IDNet devices, because
the entire IDNet communication channel is isolated during each search.
• During the search, all related troubles are suppressed and a single trouble pseudo-point is
activated (P438).
• At the completion of the search, all slaves are restarted and normal panel operation
resumes.
IMPORTANT: The fire panel cannot provide fire protection during an Earth Fault Search.
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