ABB ACS880-107LC, Hardware Manual

Page: 16 / 140

back to AC that rotates the motor. The brake unit (optional) conveys energy to brake resistors
whenever needed.
1
3
4
6
5
8 8
7
9
10
12
11 13
7
2
A
B C C D
Incoming unit A
Supply unit B
Inverter unit C
Brake unit D
AC supply 1
Main breaker, or main contactor and main switch-disconnector 2
Input (AC) fuses 3
Supply module 4
DC bus 5
Supply and inverter module DC fuses 6
DC switch/disconnector (optional) 7
Inverter modules 8
Brake chopper fuses 9
3-phase brake chopper module (optional) 10
Brake resistors (optional or acquired by user) 11
Fuses for the brake resistors 12
Motor(s) (acquired by user) 13
16 Operation principle and hardware description