Contents Of This Chapter - ABB ACS880-37 Hardware Manual

Operation principle and hardware description 31
3
Operation principle and
hardware description

Contents of this chapter

This chapter briefly describes the operation principle and construction of the drive.
Operation principle
The ACS880-37 is a low-harmonic, air-cooled, cabinet-installed drive for controlling
asynchronous AC induction motors, permanent magnet synchronous motors, AC induction
servomotors and ABB synchronous reluctance (SynRM) motors.
The drive consists of several cubicles that contain the supply and motor terminals, 1 to 6
IGBT supply module(s) forming the supply unit (line-side converter), 1 to 6 inverter
modules forming the inverter unit (motor-side converter), and optional equipment. The
actual arrangement of the cubicles varies from type to type and the selected options.
Some optional equipment require additional cubicles. See chapter Dimensions for
examples of cabinet line-ups.
Supply unit

The supply unit rectifies three-phase AC current to direct current for the intermediate DC
link of the drive.