YASKAWA GA700 Series Technical Manual page 370

7.7 Auto-Tuning Errors
Code Name
Code Name
Er-25 HighFreq Inject Param Tuning Err
370
Causes
The motor Inertia is too large.
Parameter b1-04 = 1 [Reverse Operation Selection
= Reverse Disabled] and you did Z Pulse Offset
Tuning.
The motor vibrates during tuning.
The encoder is damaged.
Causes
The motor data is incorrect.
Possible Solutions
Increase the value set in n8-02 [Pole Alignment Current Level].
• If the machine prevents reverse rotation, disconnect the motor
from the machinery, set b1-04 = 0 [Reverse Enabled], then do
Z Pulse Offset Tuning. When tuning is complete, set b1-04 = 1
[Reverse Disabled].
• If the machine does not prevent reverse rotation, set b1-04 = 0
and do Z Pulse Offset Tuning.
• Increase the values set in n8-03 [Pole Position Detection
Time] and n8-04 [Pole Alignment Time].
• Decrease the value set in n8-02 [Pole Alignment Current
Level].
• 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. Contact Yaskawa or your nearest sales representative
for more information.
YASKAWA SIEPC71061705H GA700 Series Technical Manual