ABB ACS880 Firmware Manual page 269

No. Name/Value
25.02 Speed proportional
gain
Controller
output = K
p
0.00 ...250.00
Description
Defines the proportional gain (K
Too high a gain may cause speed oscillation. The figure
below shows the speed controller output after an error step
when the error remains constant.
%
Error value
Controller output
× e
If gain is set to 1.00, a 10% error (reference - actual value) in
the motor synchronous speed produces a proportional term
of 10%.
Note: This parameter is automatically set by the speed
controller autotune function. See section
autotune (page 85).
Proportional gain for speed controller.
) of the speed controller.
p
Gain = K = 1
p
T = Integration time = 0
I
T = Derivation time = 0
D
Speed controller
Parameters 269
Def/FbEq16
10.00;
5.00
(95.21 b1)
e = Error value
Time
100 = 1