238
Parameter listing and descriptions
ACH550-01 User's Manual
Group 26: MOTOR CONTROL
This group defines variables used for motor control.
Code Description
Range
2601
FLUX OPT ENABLE
0=OFF, 1=ON
Changes the magnitude of the flux depending on the actual load. Flux
Optimization can reduce the total energy consumption and noise, and it
should be enabled for drives that usually operate below nominal load.
0 =
OFF
– Disables the feature.
1 =
ON
– Enables the feature.
2602
FLUX BRAKING
0=OFF, 1=ON
Provides faster deceleration by raising the level of magnetisation in the
motor when needed, instead of limiting the deceleration ramp. By
increasing the flux in the motor, the energy of the mechanical system is
changed to thermal energy in the motor.
• The flux braking works in vector control mode only, i.e. when
parameter 9904
MOTOR
CTRL
MODE
= 1 (
VECTOR
:
SPEED
).
0 =
OFF
– Disables the feature.
1 =
ON
– Enables the feature.
120%
80
40
0
Without flux braking
50
With flux braking
5
10
20
30
40
120%
80
40
0
50
5
10
20
30
40
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
2.2 kW
15 kW
37 kW
75 kW
250 kW
Rated motor power
Braking
f
(Hz)
f
(Hz)
torque (%)
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