YASKAWA GA800

Troubleshooting
7
7.7 Auto-Tuning Errors
YASKAWA SIEPC71061737D GA800 Drive Technical Reference 411
Code Name Causes Possible Solutions
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
[Encoder 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 [Encoder 1 Pulse
Count (PPR)] correctly.
2. Do Z Pulse Offset Tuning again.
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.