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