ABB ACS880-1604LC, Hardware Manual

Page: 18 / 200

￭ Main circuit diagram
The DC/DC converter module must be equipped with external DC fuses. You can equip the
converter with a DC switch/disconnector, if quick isolation of the module from the DC bus
is required.
This figure shows a simplified main circuit diagram of a DC/DC converter without a DC
switch/disconnector and charging circuit.
+
_
U2
V2
W2
U2
V2
W2
ES+1
ES+
ES-
ES+2
ES+3
L+
L-
1
2
3
4
Drive DC bus 1
DC/DC converter module 2
Filter module 3
Energy storage 4
This figure shows a simplified main circuit diagram of a DC/DC converter with the DC
switch/disconnector and charging circuit.
L+
L-
+
_
U2
V2
W2
U2
V2
W2
ES+1
ES
ES
ES+2
ES+3
1
2
3
4
5
6
Drive DC bus 1
DC switch/disconnector 2
DC/DC converter module 3
Filter module 4
Energy storage 5
Charging components 6
18 Operation principle and hardware description