Powering Up The Inverter Unit - ABB ACS880-104 Hardware Manual

Tasks
Set the parameters for each inverter unit. Refer to the firmware manual and/or start-up guide of the
control program. You can also use the start-up assistant if available in the particular control program.
In addition to the parameter settings required by the application, make the following settings:
• Set 31.23 Wiring or earth fault to "No action".
• Set 95.04 Control board supply according to how the inverter control unit is powered.
• Edit 95.08 DC switch monitoring if necessary (ie. with R1i...R7i modules equipped with a DC
switch/disconnector).
• Edit 95.09 Fuse switch control if necessary (ie. with R8i modules without a DC
switch/disconnector and charging controller).
• With R8i modules with option +C188 (direct-on-line cooling fan), set bit 14 of 95.20 HW options
word 1.
• With parallel-connected R8i modules, select the inverter unit type in parameter 95.31 Parallel
connection rating id. You can filter the list using parameter 95.30.
• Reboot the control unit either by cycling the power, or by parameter 96.08 Control board boot.

Powering up the inverter unit

Close the cabinet doors.
Make sure that it is safe to connect voltage to the drive system. Ensure that:
• nobody is working on the unit or circuits that have been wired from outside into the cabinets
• cover of the motor terminal box is on.
Close the main disconnecting device of the drive system.
WARNING! When connecting voltage to the supply unit, the DC busbars will become live,
as will all the inverters connected to the DC bus.
WARNING!
Inverter units with a DC switch-disconnector:
Some types of inverter module may be energized through a charging circuit even when the
DC switch-disconnector is open or the DC fuses are removed.
Inverter units without a DC switch-disconnector:
If the inverter unit only has DC fuses without a switch fuse, all the inverter units with the DC fuses in
place will be energized when the main breaker/contactor closes. To prevent this, remove the fuses
from the inverter units which are to remain unenergized before connecting voltage. When the main
breaker/contactor of the supply unit is closed (DC busbars are live), never remove or insert
the DC fuses of an inverter unit.
Inverter cubicles with frame R1i...R5i modules:
Before closing the main DC switch-disconnector of the cubicle, leave open the fuse disconnectors of
those inverter modules that need not be powered at this time. Do not open or close any fuse
disconnectors under load.
Inverter units equipped with DC switch-disconnector (or fuse disconnectors): Close the DC
switch/disconnector (or fuse disconnectors) of the inverter units that are to be powered up.
Inverter cubicles equipped with main DC switch-disconnector (frames R1i...R5i): Close the main DC
switch/disconnector.
Start-up 173