ABB ACS355 User Manual

138 Program features
Flux braking
The drive can provide greater deceleration by raising the level of magnetization in the
motor. By increasing the motor flux, the energy generated by the motor during
braking can be converted to motor thermal energy.
t (s)
f (Hz)
T
Br
T
N
20
40
60
(%)
50 Hz / 60 Hz
Flux braking
No Flux braking
T
Br
= Braking torque
T
N
= 100 N·m
Flux braking
No Flux braking
Motor speed
20
f (Hz)
40
60
80
100
0
20
40
60
80
100
0
0 5 10 15 20 25 30 35 40 45
1
2
3
0 5 10 15 20 25 30 35 40 45
1
2
3
f (Hz)
1
2
3
7.5 kW
2.2 kW
0.37 kW
Rated
motor power
Braking torque (%)
Braking torque (%)
No Flux braking
Flux braking

ABB ACS355 Specifications

General

Input Voltage	200 V to 240 V AC, 380 V to 480 V AC
Frequency	47 Hz to 63 Hz
Control Method	Scalar control
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Short circuit
Communication Interfaces	Modbus RTU, CANopen
Enclosure Rating	IP20
Operating Temperature	-10°C to +50°C (14°F to 122°F)
Storage Temperature	-40°C to +70°C (-40 to +158 °F)
Humidity	95% RH (non-condensing)
Altitude	Up to 1000 m (3280 ft) without derating