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76 Start-up
that is outside the supply unit cubicle. The drive switchgear is also outside the supply
unit cubicle. The switchgear includes a main disconnector and main contactor or
breaker.
Safety
￭
Action
WARNING!
Obey the safety instructions during the start-up procedure. See
cooled multidrive cabinets and modules safety instructions (3AXD50000048633
[English]). If you ignore the safety instructions, injury or death, or damage to the
equipment can occur.
If you are not a qualified electrical professional, do not do installation or mainten-
ance work.
Checks/Settings with no voltage connected
￭
Action
Disconnect the drive from the AC power line and make sure it is safe to start the work. See section
Electrical safety precautions (page
Make sure that the charging disconnector is open.
Make sure that the mechanical and electrical installation of the drive is completed. See
checklist (page
71).
Check the settings of breakers/switches in the auxiliary circuits.
Make sure that the voltage settings of the auxiliary voltage transformers are according to the
actual power line voltage. See the final circuit diagrams by the designer of the cabinet-installed
drive.
Starting and checking the cooling system
￭
Action
Fill up and bleed the internal cooling circuit. Start the cooling unit up. See
cuit (page
109).
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.
Install all shrouds (if removed) and close the cabinet doors.
Powering up the auxiliary circuit of the drive
￭
Action
Remove the temporary grounding system (if installed).
Close the circuit breakers supplying the auxiliary circuits.
56).
ACS880 liquid-
Installation
Internal cooling cir-
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