YASKAWA GA700 - Page 385

Troubleshooting
6
6.7 Auto-Tuning Errors
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 385
Code Name Causes Possible Solutions
Er-19 PM Inductance Error The Auto-Tuning results of the PM
motor inductance were not in the
applicable range.
1. Make sure that the input motor nameplate data
is correct.
2. Do Auto-Tuning again and correctly set the
motor nameplate data.
Code Name Causes Possible Solutions
Er-20 Stator Resistance Error The Auto-Tuning results of the PM
Motor Stator Resistance were not in the
applicable range.
1. Make sure that the input motor nameplate data
is correct.
2. Do Auto-Tuning again and correctly set the
motor nameplate data.
Code Name Causes Possible Solutions
Er-21 Z Pulse Correction Error The motor is wired incorrectly.
The encoder is wired incorrectly.
1. Repair motor and encoder wiring errors.
2. Do Z Pulse Offset Tuning again.
Auto-Tuning was performed when the
motor was coasting.
1. Make sure that the motor has stopped
completely.
2. Do Z Pulse Offset Tuning again.
The setting for the direction of the
encoder motor rotation is incorrect.
1. Set the direction of motor rotation of the
encoder in F1-05 [PG 1 Rotation Selection]
correctly.
2. Do Z Pulse Offset Tuning again.
The number of encoder pulses is
incorrect.
1. Set the number of encoder pulses in F1-01 [PG
1 Pulses Per Revolution] correctly.
2. Do Z Pulse Offset Tuning again.
The encoder is damaged. • Examine the signal output from the encoder.
• Replace the encoder.
Code Name Causes Possible Solutions
Er-25 HighFreq Inject Param
Tuning Err
The motor data is incorrect. Do Stationary Auto-Tuning again.
Note:
If the drive detects Er-25 after doing Stationary
Auto-Tuning, the motor may not be able to use
high frequency injection control. For details,
contact Yaskawa or your nearest sales
representative.