ABB ACS580 - Page 207

Parameters 203
21.25 Smooth start speed Output frequency up to which the current vector rotation is
used. See parameter 21.19 Scalar start mode.
Can be used for permanent magnet synchronous motors
only.
10.0%
2.0…100.0% Value as a percentage of the nominal motor frequency. 1 = 1%
21.26 Torque boost
current
Maximum current supplied during torque boost.
Can be used for permanent magnet synchronous motors
only.
100.0%
15.0…300.0% Value in percent of the nominal motor current. 1 = 1%
21.30 Speed
compensated stop
mode
Selects the method used to stop the drive. See also section.
Speed compensated stop (page 121).
Speed compensated stop is active only if
• the operation mode is not torque, and
• parameter 21.03 Stop mode is Ramp, or
• parameter 20.11 Run enable stop mode is Ramp (in
case Run enable is missing).
Off
Off Stop according parameter 21.03 Stop mode, no speed
compensated stop.
0
Speed comp FWD If the direction of rotation is forward, speed compensation is
used for constant distance braking. Speed difference
(between used speed and maximum speed) is compensated
by running the drive with current speed before the motor is
stopped along a ramp.
If the direction of rotation is reverse, the drive is stopped
along a ramp.
1
Speed comp REV If the direction of rotation is reverse, speed compensation is
used for constant distance braking. Speed difference
(between used speed and maximum speed) is compensated
by running the drive with current speed before the motor is
stopped along a ramp.
If the direction of rotation is forward, the drive is stopped
along a ramp.
2
Speed comp bipolar Regardless of the direction of rotation, speed compensation
is used for constant distance braking. Speed difference
(between used speed and maximum speed) is compensated
by running the drive with current speed before the motor is
stopped along a ramp.
3
21.31 Speed comp stop
delay
This delay adds distance to the total distance traveled during
a stop from maximum speed. It is used to adjust the distance
to match requirements so that the distance traveled is not
solely determined by the deceleration rate.
0.00 s
0.00…1000.00 s Speed delay. 1 = 1 s
21.32 Speed comp stop
threshold
This parameter sets a speed threshold below which the
Speed compensated stop feature is disabled. In this speed
region, the speed compensated stop is not attempted and the
drive stops as it would, using the ramp option.
10%
0…100% Speed threshold as a percent of the motor nominal speed. 1 = 1%
No. Name/Value Description Def/FbEq16
ACS580 FW.book Page 203 Wednesday, September 21, 2016 9:48 PM