Baumuller BUM 62 T, User Manual

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Commissioning
56
Mono Power Unit BUM 62 T
5.99009.03 Baumüller Nürnberg GmbH
Reset
Monitoring functions of the supply part
y Phase failure monitoring function
The voltage of all mains phases is monitored. If a mains phase fails, the BUM 62 T generates a
WARNING message. If the voltage returns within 10 seconds, the WARNING message is cleared.
If the mains phase fails for more than 10 seconds, the WARNING message is cleared and the
message ”Phase failure” is stored. The message ”Supply part ready” is cleared.
y Mains failure monitoring function
The voltage of all mains phases is monitored. Two different situations are possible:
1. Two or three mains phases fail and the DC link voltage slowly reduces.
y The WARNING message is set.
y The message ”Mains failure” is output, as soon as the DC link voltage is smaller than 300 V.
y The message ”Supply part ready” and the WARNING message are cleared.
2. Two or three mains phases fail and the DC link voltage reduces very fast
(within a few milliseconds).
y The message ”Mains failure” is output, as soon as the DC link voltage is smaller than 300 V.
y The message ”Supply part ready” is cleared.
y The WARNING message is set (for a few milliseconds).
Reason: If two or three mains phases fail, the procedure ”Output WARNING message” is started.
This procedure takes a few milliseconds. If the DC link voltage falls below 300 V within this time, the
message ”Supply part ready” is cleared immediately. The WARNING message is then set and
cleared immediately since the message ”Supply part ready” is no longer available.
To achieve an automatic restart e.g. after mains interrupt, you can avoid the storing of the messages
by a permanent triggering of the reset input (apply +24V and M24V at X99AB, optocoupler input),
NOTE
Reset : If the message cannot be reset, it is very likely that the cause of the error has not yet been
removed.
NOTE
After the +24V supply voltage has been switched on, the output of the ”Mains failure” monitoring
function is stored only if:
y the mains is recognized to be "okay" and the DC link has fallen below 300 V .