ABB ACS880-M04 - Operation Principle; Main Circuit; Motor Control

30 Operation principle and hardware description
Operation principle
 Main circuit
 Motor control
The motor control is based on direct torque control. Two phase currents and DC link
voltage are measured and used for the control. The third phase current is measured
for earth fault protection.
Motor output
Brake chopper (see chapter
Resistor braking on page
173)
+–
UDC+ UDC– V1 W1U1
V2 W2U2 R– R+
AC supply
ACS880-M04
drive
Capacitor bank
Rectifier
CHK-xx mains choke (see
chapter Mains chokes on
page 155)
JFI-xx EMC filter (see chapter
EMC filters on page 159)
JBR-xx brake resistor (see
chapter Resistor braking on
page 173)
NOCHxxxx-xx du/dt filter
(see chapter du/dt and
common mode filtering
on page 169)