LSIS G100, Operation Manual

Page: 151 / 343

Gain value can be adjusted according to the load characteristics. However, use with
caution because motor overheating and system instability may occur depending on the
Gain value settings.
5.10.2 Sensorless Vector Control Operation Guide for Induction
Motors
Problem
Relevant
Function Code
Troubleshooting
If the number of motor
rotations drops due to
the lack of torque
Cn.22 Out Trq.
Comp. Gain
If there is a severe drop in the motor rotation to
36
RPM or more, increase the Cn.22 Out Trq.
Comp. Gain value in 10% units.
If the motor rotation
count error factor is 18
RPM or greater even
though there is a
sufficient amount of
torque.
Cn.23 Spd.
Comp. Sub Gain
Cn.24 Spd.
Comp. Main Gain
Change the Cn.24 Spd. Comp. Main Gain
value in 5% units. Refer to the load-rotation
count gradient according to the Cn.24 Spd.
Comp. Main Gain value below.
Example: The gradient slants
counterclockWise as the Cn.24 Spd. Comp.
Main Gain value increases.
Change the Cn.23 Spd. Comp. Sub Gain value
in 5% units. Refer to the load-rotation count
gradient according to the Cn.23 Spd. Comp.
Sub Gain value below.
Example: The gradient slants clockWise as
Cn.23 Spd. Comp. Sub Gain value increases.