ABB ACS880-7207LC Hardware Manual page 42

42 Start-up
Tasks
DC incoming unit: Make sure that the DC isolator/breaker [Q340] is open, and isolated (cranked-out).
If the DC incoming unit is connected to an external DC system: Make sure that the external system is
disconnected or de-energized (it cannot energize the DC incoming unit).
Make sure that the mechanical and electrical installation of the unit has been inspected and is OK.
See the installation checklist.
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 of the DC incoming unit [F22]. Close also other circuit
breakers of auxiliary circuit of the DC incoming unit if any, for example circuit breaker for the cooling
fans [F115.10] (vary depending on the delivery). 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.
ACS880-7207LC only: Tuning the settings of the protection and control relay REG615 or REF615 [A851]
Adjust the settings of the protection relay when necessary. See the delivery-specific documentation.
Energizing the drive and DC incoming unit
Electrical safety precautions (page 26).