ABB ACA 6 Series - Single Inverter Modules; Parallel Connected Phase Module Blocks

Chapter 1 – Introduction
ACS 600 MultiDrive Hardware Manual 1-13
Single Inverter Modules One NAMC board controls the inverter unit. It is located on the DIN rail
at the left side of the inverter unit cabinet inside the Drive Control Unit
(NDCU) box together with the NIOC board.
Parallel Connected
Phase Module Blocks
One NAMC board controls all parallel connected phase module blocks
via an optical branching unit (NPBU-4x) which forwards commands
simultaneously to the interface (NINT) boards of the blocks. Each block
is supplied via fuses.
M
3 ~
Optional du/dt filter(s)
~
=
1L+
1L–
NAMC
NDCU
NAMC
~
=
M
3 ~
Optional du/dt filter(s)
~
=
~
=
~
=
L+
L–
NPBU
NDCU