YASKAWA GA700 Technical Manual page 385

Code Name
Er-19 PM Inductance Error
Code Name
Er-20 Stator Resistance Error
Code Name
Er-21 Z Pulse Correction Error
Code Name
Er-25 HighFreq Inject Param
Tuning Err
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Causes
The Auto-Tuning results of the PM
motor inductance were not in the
applicable range.
Causes
The Auto-Tuning results of the PM
Motor Stator Resistance were not in the
applicable range.
Causes
The motor is wired incorrectly.
The encoder is wired incorrectly.
Auto-Tuning was performed when the
motor was coasting.
The setting for the direction of the
encoder motor rotation is incorrect.
The number of encoder pulses is
incorrect.
The encoder is damaged.
Causes
The motor data is incorrect.
6.7 Auto-Tuning Errors
Possible Solutions
1. Make sure that the input motor nameplate data
is correct.
2. Do Auto-Tuning again and correctly set the
motor nameplate data.
Possible Solutions
1. Make sure that the input motor nameplate data
is correct.
2. Do Auto-Tuning again and correctly set the
motor nameplate data.
Possible Solutions
1. Repair motor and encoder wiring errors.
2. Do Z Pulse Offset Tuning again.
1. Make sure that the motor has stopped
completely.
2. Do Z Pulse Offset Tuning again.
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.
1. Set the number of encoder pulses in F1-01 [PG
1 Pulses Per Revolution] correctly.
2. Do Z Pulse Offset Tuning again.
• Examine the signal output from the encoder.
• Replace the encoder.
Possible Solutions
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.
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