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Operating instructions
Contents of this chapter
This chapter contains the operating instructions for the semiconductor switch unit
ACS880-7407LC.
Opening and closing the DC breaker switch
Close the DC breaker switch with the External trigger input signal (closed control circuit).
See
Default control connection diagram (page
If necessary, you can also open the DC breaker switch with the External trigger input signal
(open control circuit).
During the normal operation of the drive, the DC breaker switch is closed and it monitors
the system status. If the DC breaker switch detects a fault situation, it goes to the Fault
mode and trips (opens). See
Adjusting the settings of the DC breaker switch
The parameter settings of the DC breaker switch are adjusted by ABB for each delivery on
basis of the project specification. The user does not need to change these settings typically.
For more information on the parameter settings, see DC breaker switch user's manual
(AD-10811-020) available from Astrol Electronics AG.
26).
Fault mode of the DC breaker switch (page
Operating instructions 33
5
35).
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