Option 123
System fault history
For parameters setting details please reference to 2UBB005340 ACS580MV Marshalling
Unit firmware.
Circuit breaker tests
Test all circuit breakers, including MCB, MSS, MB, in test position and test the control and
feedback, by forcing corresponding IOs.
• For single motor mode,
a. Keep parameter 85.12 to single motor mode.
b. Keep other SBU parameters.
c. MSS will close and open same following MCB.
• For multi motor mode,
a. Set and save 85.12 to multiple motors mode.
b. Make sure 85.14 is set to Steady signal.
c. Make sure 85.15 is set to Steady signal.
d. Connect your PC with marshalling PLC.
Motor selection set will close corresponding MSS, and motor selection unset will open
corresponding MSS. MB can be controlled by DOL signal after enabling corresponding MB
open DOL and MB close DOL functions.
DANGER The MCB, MSS, MB must stay in TEST position during the following
test! Make sure that MB should have hardwiring interlock with MSS, MSS
cannot close when MB is closed.
MSS cannot connect to ground in case of MB is
closed.
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