ABB ACS320 - 3 Operation Principle and Hardware Description; Contents of this Chapter; Operation Principle

Operation principle and hardware description 23
3
Operation principle and
hardware description
Contents of this chapter
The chapter briefly describes the operation principle, layout, type designation label
and type designation information. It also shows a general diagram of power
connections and control interfaces.
Operation principle
The ACS320 is a wall or cabinet mountable drive for controlling AC motors.
The figure below shows the simplified main circuit diagram of the drive. The rectifier
converts three-phase AC voltage to DC voltage. The capacitor bank of the
intermediate circuit stabilizes the DC voltage. The inverter converts the DC voltage
back to AC voltage for the AC motor.
AC motor
M
3~
Rectifier Intermediate
circuit
AC supply
Inverter