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32 Start-up
Tasks
Make sure that the other units of the drive are ready for the power up:
• The supply and inverter units (and other units, if any) have been installed according to the instructions
given in their hardware manuals.
• The supply and inverter units (and other units, if any) have been commissioned and are ready for
use. See the appropriate unit-specific manuals.
Close the auxiliary voltage circuit breaker [F22] of the semiconductor switch unit. Close also other circuit
breakers of auxiliary circuit of the semiconductor switch unit, for example circuit breaker [F115.10] for
the cooling fan. See the circuit diagrams delivered with the drive.
Make sure that it is safe to start the work. Do the steps in section
Starting and checking the cooling system
Fill up and bleed the internal cooling circuit. Start the cooling unit up. See ACS880-107LC inverter
units hardware manual (3AXD50000196111 (English)) and ACS880-1007LC liquid cooling unit user's
manual (3AXD50000129607 (English)).
Check the cooling system for leaks. Make sure that cooling circuit joints at the shipping split joining
cubicles are tight and that all drain valves have been closed.
Make sure that the coolant can flow freely in all cubicles.
Closing the cabinet doors
Close all cabinet doors.
Connecting voltage to the drive and its auxiliary circuits
Connect main AC voltage to the input terminals of the drive supply unit. (Close the main breaker of
the supply transformer.)
Close the main disconnecting device of the drive: Crank-in the main breaker ([Q1], option +F255), or
close the main switch/disconnector (option +F253).
Close the auxiliary voltage switch [Q21] of the drive supply unit.
Tuning the settings of the DC breaker switch in the semiconductor switch unit
The parameter settings are adjusted by ABB for each delivery on basis of the project specification.
The user does not need to change these settings typically. If you need to adjust the settings, see the
DC breaker switch user's manual (AD-10811-020) by Astrol Electronics AG:
Energizing the drive and the semiconductor switch unit
WARNING!
When you start the supply unit, the drive DC bus will be energized, as will all the units connec-
ted to the DC bus. If you want to prevent this for any of the units, open its DC switch/discon-
nector (if available), or remove its DC fuses.
Start the drive supply unit and energize the drive. See the delivery-specific circuit diagrams, and the
supply unit hardware manual.
If the drive is equipped with main breaker ([Q1], option +F255) or contactor ([Q2], option +F250) , the
operating switch [S21] on the door of the drive incoming cubicle starts the supply unit and triggers the
drive power up sequence.
Closing the DC breaker switch
Close the control circuit for the External trigger input signal (terminals X330:8 and X330:9). See also
Opening and closing the DC breaker switch (page 33)
Electrical safety precautions (page
www.astrol.ch
and
Default control connection diagram (page
24).
26).
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