Speed Dependent Kp Gain; Min Kp Gain At High Speed; Kd Speed Gain - KEB COMBIVERT F5 Instruction Manual

These parameters allow the KP gain to be scaled dependent on the command speed
US. 22
of the elevator. In some cases it is benefi cial to reduce the gain at high speed to
Speed
minimize system response to hoistway vibrations or disturbances. Parameter US.22
dependent KP
turns the variable gain function on or off and parameter US.23 adjusts the value to
gain
which the gain is reduced.
US. 23
Min KP gain at
high speed
KP value
LF.31
US.23
Speed
High
Speed
LF.42
US. 24 This acts as a derivative gain for the speed control. Generally the use of the derivative
term is not necessary. However, there are some applications, where it could be

KD speed gain

useful. An example of which would be if for some reason it was necessary to keep
the KP and KI gain values very low to prevent oscillation. In this case the KD gain
could be used to maintain stability.
142
Advanced Parameters
US.22
Unit: -
Value range: off, on
Default setting: off
US.23
Unit: 1
Value range: 0..32000
Default setting: 1000
Unit: -
Value range: 0...32000
Default setting: 0
Recommended adjustment:
time
time
500 - 1500