ABB ACS355 series - Motor Control

Actual signals and parameters 241
2505 CRIT SPEED 2
HI
See parameter 2503 CRIT SPEED 1 HI. 0.0 Hz /
1rpm
0.0…599.0 Hz /
0…30000 rpm
See parameter 2503.1 = 0.1Hz
/ 1 rpm
2506 CRIT SPEED 3
LO
See parameter 2502 CRIT SPEED 1 LO. 0.0 Hz /
1rpm
0.0…599.0 Hz /
0…30000 rpm
See parameter 2502.1 = 0.1Hz
/ 1 rpm
2507 CRIT SPEED 3
HI
See parameter 2503 CRIT SPEED 1 HI. 0.0 Hz /
1rpm
0.0…599.0 Hz /
0…30000 rpm
See parameter 2503.1 = 0.1Hz
/ 1 rpm
26 MOTOR
CONTROL
Motor control variables
2601 FLUX OPT
ENABLE
Activates/deactivates the flux optimization function. Flux
optimization reduces the total energy consumption and
motor noise level when the drive operates below the
nominal load. The total efficiency (motor and the drive) can
be improved by 1% to 10%, depending on the load torque
and speed. The disadvantage of this function is that the
dynamic performance of the drive is weakened.
OFF
OFF Inactive 0
ON Active 1
2602 FLUX
BRAKING
Activates/deactivates the Flux braking function. See section
Flux braking on page 140.
OFF
OFF Inactive 0
MODERATE Flux level is limited during the braking. Deceleration time is
longer compared to full braking. The moderate mode is
always used with permanent magnet motor selection and
vector control.
1
FULL Maximum braking power. Almost all available current is
used to convert the mechanical braking energy to thermal
energy in the motor.
2
All parameters
No. Name/Value Description Def/FbEq