ABB ACS 600 MultiDrive, User Manual

Page: 27 / 109

Chapter 4 – Commissioning the Supply Section with ISU
ACA 635 IBGT Supply Sections 4-3
Connecting Voltage to
Auxiliary Circuits This table describes how to connect voltage to the supply section input
terminals and to the Auxiliary Control Unit (ACU) for the first time.
Action Information
WARNING! When voltage is connected to the input terminals of the supply section,
the voltage will also be connected to the auxiliary control unit and to auxiliary circuits
- also to the ones wired to drive sections.
Make sure that it is safe to connect voltage to the input terminals. Ensure that while
the voltage is connected:
• Nobody is working with the unit or circuits that are wired from outside into the
cabinets.
• The cabinet doors are closed.
Disconnect the 230 VAC cables that lead from the terminal
blocks to the outside of the equipment and have not yet
been checked, and the connections which may not yet have
been completed.
Make sure that the main contactor/air circuit breaker cannot
inadvertently be remote controlled to close, e.g. by
temporarily opening some connection in its control circuit.
Be ready to trip the main breaker of the supply transformer
in case anything abnormal occurs.
Ensure that all cabinet doors are closed.
Close the main breaker of the supply transformer.
Close the main disconnecting switch of the supply section.
Close the main disconnecting switch of the auxiliary circuit.