YASKAWA GA700 Technical Manual page 319

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 01B YASKAWA AC Drive GA700 Technical Manual
Cause
The Auto-Tuning results of the PM
Motor Stator Resistance were outside
the allowable range.
Cause
The motor is not wired correctly.
The encoder is not wired correctly.
Auto-Tuning was performed when the
motor was coasting.
The setting for the direction of motor
rotation of the encoder is incorrect.
The number of PG pulses is incorrect.
The encoder is damaged.
Cause
The motor data is incorrect.
6.7 Auto-Tuning Errors
Possible Solution
1. Make sure the input motor nameplate data is
correct.
2. Perform Auto-Tuning again and correctly set
the data that appears on the motor nameplate.
Possible Solution
1. Correct any motor and PG wiring errors.
2. Perform Z Pulse Offset Tuning again.
1. Make sure the motor has stopped completely.
2. Perform Z Pulse Offset Tuning again.
1. Set the direction of motor rotation of the
encoder correctly. [F1-05]
2. Perform Z Pulse Offset Tuning again.
1. Set the number of PG pulses correctly. [F1-01]
2. Perform Z Pulse Offset Tuning again.
• Check the signal output from the encoder.
• Replace the encoder if damaged.
Possible Solution
Perform Stationary Auto-Tuning again.
Note:
If Er-25 is detected again even after executing
Stationary Auto-Tuning, high frequency
injection control might not be possible with that
motor. For details, contact Yaskawa or your
nearest sales representative.
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