YASKAWA GA800 Maintenance & Troubleshooting page 134

2.7 Auto-Tuning Errors
Code Name
Code Name
Er-25 HighFreq Inject Param Tuning Err
134
Causes
The setting for the direction of the encoder motor
rotation is incorrect.
The number of encoder pulses is incorrect.
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.
YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
Possible Solutions
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.
1. Set the number of encoder pulses in F1-01 [Encoder 1 Pulse
Count (PPR)] correctly.
2. Do Z Pulse Offset Tuning again.
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.