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Appendix B. Faults/Events
There are three types of Faults/Events that may occur and be recorded in the event log of an
MBT-4000, BDC-400 or BUC-4000. These are:
•
Summary Faults
•
Configurable Summary Faults
•
Informational Events
Summary Faults indicate improper operation. When a Summary Fault condition occurs: The
Summary Fault Relay will be de-energized. If a Summary Fault occurs on a converter, it will
mute. If a Summary Fault occurs on the base unit, the applicable converters (one or both) will be
muted according to the specific error. If a Summary Fault occurs on the on-line unit of a
redundant pair, the off-line unit will detect the fault and assume on-line state. In all cases, a
corresponding event message will be added to the event log.
Configurable Summary Faults operate the same as Summary Faults, except Configurable
Summary Faults may be enabled/disabled via remote commands.
Informational Events are operation conditions which may be important, but are not considered
improper operation and will not cause a converter to mute.
Tables B1through B8 list possible Fault/Event messages.
B-1
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