ABB ACS280 Firmware Manual page 163

No. Name/Value
25.06 Acc comp derivation
time
0.00...1000.00 s
25.07 Acc comp filter time
0.0...1000.0 ms
25.15 Proportional gain em
stop
1.00...250.00
Description
Defines the derivation time for
acceleration(/deceleration) compensation. In order
to compensate for a high inertia load during
acceleration, a derivative of the reference is added to
the output of the speed controller. The principle of a
derivative action is described under parameter
Speed derivation time
.
Note: As a general rule, set this parameter to the
value between 50 and 100% of the sum of the
mechanical time constants of the motor and the
driven machine.
The figure below shows the speed responses when a
high inertia load is accelerated along a ramp.
No acceleration compensation:
Acceleration compensation:
Acceleration compensation derivation time.
Defines the acceleration (or deceleration)
compensation filter time constant. See parameters
25.04 Speed derivation time
derivation time
.
Acceleration/deceleration compensation filter time.
Defines the proportional gain for the speed controller
when an emergency stop is active. See parameter
25.02 Speed proportional gain
Proportional gain upon an emergency stop.
Parameters 163
25.04
Speed reference
Actual speed
Time
Speed reference
Actual speed
Time
25.06 Acc comp
and
.
Default
FbEq 16
0.00 s
10 = 1 s
8.0 ms
1 = 1 ms
10.00
100 = 1