ABB ACS 800 Series, Hardware Manual

Page: 21 / 101

21
The ACS800-PC
Diagram
This diagram shows the control interfaces and the main circuit of the drive.
Operation
This table describes the operation of the main circuit in short.
Component Description
six-pulse rectifier converts the three-phase AC voltage to DC voltage
capacitor bank energy storage which stabilizes the intermediate circuit DC voltage
six-pulse IGBT inverter converts the DC voltage to AC voltage. The motor operation is controlled
by switching the IGBTs.
~
=
~
=
Motor
control and
I/O board
(RMIO)
External control via
analogue/digital
inputs and outputs
Input power
Output power
R- UDC+ UDC-
R+
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
Brake chopper (optional)