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

Single Inverter Modules

Parallel Connected
Phase Module Blocks
NDCU
NAMC
ACS 600 MultiDrive Hardware Manual
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.
1L+ 1L–
=
~
Optional du/dt filter(s)
~
3
M
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.
L+
L–
=
~
NPBU
NDCU
NAMC
= =
=
~
~
~
3
M
Chapter 1 – Introduction
~
Optional du/dt filter(s)
1-13