Speed Reference Selection - ABB ACS380 Firmware Manual

ACS380 FW.book Page 177 Friday, May 4, 2018 4:18 PM
No. Name/Value
Speed comp REV
Speed comp bipolar
21.31 Speed compensated
stop delay
0.00...1000.00 s
21.32 Speed comp stop
threshold
0...100%
21.34 Force auto restart
Disable
Enable
22
22 Speed reference
selection
22.01 Speed ref unlimited
-30000.00... 30000.00
rpm
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Description
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.
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.
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.
Speed delay.
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.
Speed threshold as a percent of the motor nominal speed. 1 = 1%
Forces automatic restart. The parameter is applicable only
if parameter 95.04 Control board supply
24V.
Force auto restart disabled. Parameter
time is in effect if its value is more than 0.0 s.
Force auto restart enabled. Parameter
time is ignored. The drive never trips on the undervoltage
fault and the start signal is on forever. When he DC
voltage is restored, the normal operation continues.
Speed reference selection; motor potentiometer settings.
See the control chain diagrams on pages 498...502.
Displays the output of the speed reference selection
block. See the control chain diagram on page 498.
This parameter is read-only.
Value of the selected speed reference.
Parameters 177
Default
FbEq 16
2
3
0.00 s
1 = 1 s
10%
Disable
is set to External
21.18 Auto restart 0
21.18 Auto restart 1
0.00 rpm
See par.
46.01