Motor Control; Reduced Run Capability - ABB ACS800-07-0610-3 Hardware Manual

This diagram shows the control interfaces of the inverter unit.
Control panel
External control via
analogue/digital inputs
Input power
module(s)

Motor control

The motor control is based on the Direct Torque Control (DTC) method. Two phase
currents and DC link voltage are measured and used for the control. The third phase
current is measured for earth fault protection.

Reduced run capability

If one of parallel-connected supply or inverter modules must be taken out of the
cabinet for service, it is possible to continue operation using the remaining modules,
albeit at reduced power. For directions, contact your local ABB representative.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
and outputs
Supply
Drive control unit
(RDCU)
Optional module 1: I/O extension (RAIO,
Motor control
RDIO), pulse encoder interface (RTAC), or
and I/O board
fieldbus adapter (e.g. RMBA, RDNA, RPBA)
(RMIO)
Optional module 2: I/O extension (RAIO,
RDIO) or pulse encoder interface (RTAC)
Optional module 3: DDCS communication
option (RDCO-01, RDCO-02 or RDCO-03)
To motor
Inverter
module(s)
Brake choppers and
resistors (optional)
35
Hardware description