ABB ACS880-04 drive modules, Application Manual

Page: 15 / 48

Operation principle and hardware description 15
Overview diagram of the drive main circuit
The overview diagrams below show the main circuits of the drive modules. The differences
between the drive modules, in regards of the use of the drives in a common DC system,
are the charging circuit and brake chopper designs.

Charging circuit types
Type A
Charging resistor is in the DC link (frame sizes R1 to R4).
Type B
Charging resistor is in parallel with the input bridge (frame sizes R5 and larger).

Brake chopper types
•
Brake chopper is included as standard in frame sizes R1 to R4.
•
Brake chopper is a factory-installed option for frame sizes R5 and larger (option
+D150).
L1
L2
L3
U
V
W
R-
UDC+
R+
UDC-
L1
L2
L3
U
V
W
BR
-
UDC+
R+
UD
C-
R1, …, R4
R5, …, R11
1
2
1
2
1 Charging resistor
2 Brake chopper