YASKAWA V1000 Series

5.8 Auto-Tuning Fault Detection
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07) 243
Troubleshooting
5
Cause Possible Solutions
Auto-Tuning did not complete
within the designated time
frame.
• Check and correct faulty motor wiring.
• Disconnect the motor from machine and perform Auto-Tuning.
Values that were calculated by
the drive are outside the
allowable parameter setting
ranges.
• Check and correct faulty motor wiring.
• Disconnect the motor from machine and perform Auto-Tuning.
LED Operator Display Error Name
Er-09 Acceleration Error (detected only during Rotational Auto-Tuning)
Cause Possible Solutions
The motor did not accelerate for
the specified acceleration time.
• Increase the acceleration time (C1-01).
• Check if it is possible to disconnect the machine from the motor.
Torque limit when motoring is
too low (L7-01 and L7-02).
• Check the settings of parameters L7-01 and L7-02).
• Increase the setting.
LED Operator Display Error Name
Er-11 Motor Speed Fault (detected only when Auto-Tuning is enabled)
Cause Possible Solutions
Torque reference is too high.
(Enabled in Open Loop Vector
only.)
• Increase the acceleration time (C1-01).
• Disconnect the machine from the motor, if possible.
LED Operator Display Error Name
Er-12 Current Detection Error
Cause Possible Solutions
One of the motor phases is
missing (U/T1, V/T2, W/T3).
Check motor wiring and correct problems.
Current exceeded the current
rating of the drive.
• Check the motor wiring for a short between motor lines.
• If a magnetic contactor is used between motors, ensure it is on.
• Replace the drive.
The current is too low.
Auto-Tuning was attempted
without the motor connected to
the drive.
Connect the motor and perform Auto-Tuning.
Current detection signal error. Replace the drive.
LED Operator Display Error Name
End1 Excessive V/f Setting (detected only during Rotational Auto-Tuning)