ABB ACS800 - Drive Control Unit (RDCU) Connections and Operation

The ACS800-04/U4 and ACS800-04M
21
Connections of the Drive Control Unit (RDCU) in frame sizes R7 and R8
Operation
This table describes the operation of the main circuit in short.
Component Description
six-pulse rectifier converts the three-phase AC voltage to DC voltage
capacitor bank energy storage which stabilizes the intermediate circuit DC voltage
six-pulse IGBT inverter converts the DC voltage to AC voltage and vice versa. The motor
operation is controlled by switching the IGBTs.
Control panel mounting platform
kit (RPMP-11, optional)
Control panel
CDP312R (optional)
3 m (11 8 in.)
Drive control unit
RDCU which
contains motor
control and I/O
board RMIO
External control connections
to RMIO board
To R M IO
Shielded 6-pin
modular connector
AINT
APOW
3 m (118 in.)
Shield
2100 mm (83 in.)
ø
4
.
5
(
0
.
1
8
”
)
8
0
(
3
.
1
5
”
)
8
0
(
3
.
1
5
”
)
Protective tube
ACS800-04
drive module