YASKAWA GA700 Series

7.7 Auto-Tuning Errors
370 YASKAWA SIEPC71061705H GA700 Series Technical Manual
Code Name Causes Possible Solutions
The motor Inertia is too large. Increase the value set in n8-02 [Pole Alignment Current Level].
Parameter b1-04 = 1 [Reverse Operation Selection
= Reverse Disabled] and you did Z Pulse Offset
Tuning.
• 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.
The motor vibrates during 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].
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. Contact Yaskawa or your nearest sales representative
for more information.