ABB ACS180 - Page 159

Parameters 159
21.26 Torque boost current Defines the maximum supplied current to motor during
‘Torque boost’ –starting mode. Parameter value is in
percent of the motor nominal current. Nominal value of the
parameter is 100.0%. ‘Torque boost’ –starting mode can
be used only when motor control mode is ‘Scalar’. Torque
boost is only applied at start, ending when output
frequency exceeds 40% of nominal frequency or when
output frequency is equal to reference.
100.0%
15.0... 300.0% 0.01 = 1%
21.27 Torque boost time Defines the minimum and maximum torque boost time.
If torque boost time is less than 40% of frequency
acceleration time (see parameters 28.72 and 28.74),
torque boost time is set at 40% of the frequency
acceleration time.
20.0 s
0.0... 60.0s Nominal motor time. 1=1s
21.30 Speed compensated
stop mode
Selects the method used to stop the drive. See also
section Speed compensated stop on page 69.
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
No. Name/Value Description Default
FbEq 16
ACS180 FW.book Page 159 Tuesday, March 9, 2021 2:25 PM