Main Circuit And Control; Diagram; Operation - ABB ACS800 Series Hardware Manual

Main circuit and control

Diagram

This diagram shows the control interfaces and the main circuit of the drive.
External control via
analogue/digital
inputs and outputs
Prevention of unexpected start -up
(AGPS board) or
Safe torque off (ASTO board)
Input power

Operation

This table describes the operation of the main circuit in short.
Component
six-pulse rectifier
capacitor bank
IGBT inverter
Drive
Motor
control and
I/O board
(RMIO)
X41
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 and vice versa. The motor
operation is controlled by switching the IGBTs.
Operation principle and hardware description
Option module 1: RMBA, RAIO, RDIO,
RDNA, RLON, RIBA, RPBA, RCAN,
RCNA, RMBP, RETA, RECA, REPL, RRIA
or RTAC
Option module 2: RTAC, RAIO, RRIA or
RDIO
DDCS communication option module 3:
RDCO-01, RDCO-02 or RDCO-03
Output power
Brake chopper in frame sizes R2 and R3
and in 690 V units of frame size R4
(optional in other frame sizes)
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