ABB ACS880-607 Series, Руководство по оборудованию

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Tasks
Make sure that the supply unit of the drive system has been started up according to the instruc-
tions in its hardware manual.
Make sure that the inverter units of the drive system have been started up according to the in-
structions in their hardware manual.
Make sure that the supply unit is stopped, and the drive system has been isolated from the
supply network.
Powering up the DC bus
Make sure that all cabinet doors are closed.
WARNING!
Before you close the drive main contactor / air circuit breaker (Q1) , make sure that
sufficient inverter power is connected to the intermediate DC bus. A rule of thumb: The
sum capacitance of the inverters connected must be at least 50% of the sum capacitance
of all inverters.
If there is not enough capacitive load at start, the DC voltage can overshoot the over-
voltage limit causing immediate start of the brake unit and continuous supply for it by
the supply unit. Constant braking will overload brake choppers and resistors and cause
overheating.
Close the disconnector of the supply transformer.
Close the drive auxiliary voltage switch (Q21) to power up the control unit of the unit.
Start the supply unit. See the supply unit hardware manual. When started, the supply unit charges
the capacitors of all inverters and brake units connected to the DC bus.
Brake units with DC switch/disconnector (F286): Connecting the brake unit to the DC bus
To charge the brake unit capacitors, close the charging switch (Q10).
When the green light on the cabinet door illuminates, close the DC switch/disconnector (Q11)
of the brake unit.
Open the charging switch (Q10).
Note:
The brake unit can start only after the charging switch is open.
Setting up the brake unit parameters
Check the brake control program parameter settings. See ACS880 brake control program firm-
ware manual (3AXD50000020967 [English]).
Operational tests
Test the operation of the braking. See ACS880 brake control program firmware manual
(3AXD50000020967 [English]).
58 Start-up