ABB ACS800 Hardware Manual page 21

Diagram
This diagram shows the control interfaces and the main circuit of the drive.
External control via
analogue/digital
inputs and outputs
Input power
Operation
This table describes the operation of the main circuit in short.
Component
six-pulse rectifier
capacitor bank
six-pulse IGBT inverter
Motor
control and
I/O board
(RMIO)
=
~
R- UDC+ UDC-
R+
Description
converts the three-phase AC voltage to DC voltage
energy storage which stabilizes the intermediate circuit DC voltage
converts the DC voltage to AC voltage. The motor operation is controlled
by switching the IGBTs.
Optional module 1: RMBA, RAIO,
RDIO, RDNA, RPBA, RCNA, RMBP,
RETA or RTAC
Optional module 2: RTAC, RAIO or
RDIO
DDCS communication option module:
RDCO-01, RDCO-02 or RDCO-03
~
Output power
=
Brake chopper (optional)
21
The ACS800-PC