ABB ACA 6 Series, Hardware Manual

Page: 91 / 102

Chapter 5 – Commissioning the Drive Section
ACS 600 MultiDrive 5-5
Connecting Voltage to
Drive Section The table below describes how to connect voltage to the Drive Section.
Action Information
WARNING! When connecting voltage to the Supply Unit, the DC busbars will become
live, as will all the inverters connected to the DC busbars.
Make sure that it is safe to connect voltage to the Supply Unit. Ensure that:
• Nobody is working on the unit or circuits that are wired from outside into the cabinets.
• It is safe to start the motor.
• All cabinet doors are closed.
WARNING!
Drive Section with a disconnecting switch
When the drive section disconnecting switch (switch fuse) and the main breaker/
contactor of the Supply Section are closed, the drive section is powered through the
charging circuitry even though the main fuses of the drive section (e.g. fuses in the
switch fuse) are removed. When the drive section disconnecting switch is opened the
fuses in it can be removed and inserted but not the charging circuit fuses which are
live!
Drive Section without a disconnecting switch
If the drive sections only have fuses without a main switch, all the sections which have
the fuses installed will be powered to a voltage of 1.35
×
U
1
when the main breaker/
contactor closes. To prevent this, remove the fuses from the drive sections which you
do not wish to receive power. If the drive section is not equipped with a main switch,
the drive section must only be energised/de-energised by operating the main breaker/
contactor in the supply section.
When the main breaker/contactor of the Supply
Section is closed (DC busbar is live), never remove or insert the fuses of a drive
section .
DRIVE SECTION EQUIPPED WITH AN OPTIONAL MAIN DISCONNECTING SWITCH
1. Frames R2i to R4i
Turn the main disconnecting switch of the drive section
(switch fuse) to ON position. Charging circuit is implemented
internally. After the charging is
finished, a relay contact will
bypass the resistor.
2. Frames R5i to R6i
Turn the main disconnecting switch of the drive section
(switch fuse) to ON position. Charging circuit is implemented
internally. After the charging is
finished, a relay contact will
bypass the resistor.