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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.

LSIS G100 User Manual

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