Arkel KM-20 - PI Speed Regulator Adjustment

ARKEL Elektrik Elektronik Ltd. Şti. www.arkel.com.tr
ARKEL 55 KM-20
TÜRKÇE
ENGLISH
14.5. PI SPEED REGULATOR ADJUSTMENT
SPEED CONT. KP
The differential factor of PI speed regulator
SPEED CONT. KI
The integral factor of PI speed regulator
“SPEED CONT. KP” and “SPEED CONT. KI” parameters determine the PI speed regulator’s
reaction sensitivity which adjusts the motor speed.
The integral factor KI multiplies the total of errors so must be adjusted to very smaller than KP
otherwise it causes vibration and overshoots at travel curve. Usually it is better to adjust KP >
10xKI.
If KI and KP are too high it makes noise at motor. Too small values cause delays to catch the
reference speed and sensitivity loss.
KI
S
KP *
1
Encoder feed-back signal
Limiter
Σ
+
Figure-17: PI speed regulator adjustment
Speed
reference
Output torque
reference