Digital Operator Display Error Name
Er-21 Z Pulse Correction Error
Cause Possible Solutions
Motor was coasting when Auto-Tuning
was performed.
Make sure the motor comes to a complete stop. Repeat Auto-Tuning.
Either the motor or the PG encoder on the
motor are not properly wired.
Check the wiring for the motor and the PG encoder. Restart Auto-Tuning.
The direction for the PG encoder is set
incorrectly, or the number of pulses set for
the PG encoder is wrong.
Check the direction and number of pulses set for the PG encoder. Restart Auto-Tuning.
PG encoder is damaged. Check the signal output from the PG encoder attached to the motor. Replace the PG if damaged.
Motor inertia is large. Increase the setting of n8-02 (Pole Attraction Current).
Z-Pulse Offset Tuning was performed
when b1-04 was set to 1.
• Z-Pulse Offset Tuning cannot be performed for a machine with reverse operation prohibited.
•
If the machine allows reverse operation, set b1-04 to 0 to enable Reverse Operation Selection and then
perform Z-Pulse Offset Tuning.
Motor vibrates during tuning.
• Increase the setting of n8-03, Current Startup Time, and n8-04, Pole Attraction Time.
• Decrease the setting of n8-02, Pole Attraction Current.
Digital Operator Display Error Name
Er-25 High Frequency Injection Parameter Tuning Error
Cause Possible Solutions
Motor data was incorrect.
Perform Stationary Auto-Tuning and then perform High Frequency Injection Parameter Tuning again. If the
problem continues, high frequency injection control might not be possible with that motor.
Note: Auto-Tuning is not applicable for SPM motors.
5.5 Auto-Tuning Fault Detection
210
YASKAWA ELECTRIC TOEP C710616 41G YASKAWA AC Drive - A1000 Quick Start Guide
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