Actual signals and parameters 241
2505 CRIT SPEED 2
HI
See parameter
.
0.0 Hz /
1 rpm
0.0…599.0 Hz /
0…30000 rpm
See parameter
1 = 0.1 Hz
/ 1 rpm
2506 CRIT SPEED 3
LO
See parameter
.
0.0 Hz /
1 rpm
0.0…599.0 Hz /
0…30000 rpm
See parameter
1 = 0.1 Hz
/ 1 rpm
2507 CRIT SPEED 3
HI
See parameter
.
0.0 Hz /
1 rpm
0.0…599.0 Hz /
0…30000 rpm
See parameter
1 = 0.1 Hz
/ 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
Inactive
0
ON
Active
1
2602 FLUX
BRAKING
Activates/deactivates the Flux braking function. See section
on page
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
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...