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Hardware description
35
This diagram shows the control interfaces of the inverter unit.
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.
Motor control
and I/O board
(RMIO)
External control via
analogue/digital inputs
and outputs
Input power
To motor
Optional module 1:
I/O extension (RAIO,
RDIO), pulse encoder interface (RTAC), or
fieldbus adapter (e.g. RMBA, RDNA, RPBA)
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)
Brake choppers and
resistors (optional)
Drive control unit
(RDCU)
Control panel
Supply
module(s)
Inverter
module(s)
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
Summary of Contents for ACS800-07-0610-3
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