Cause
Possible Solutions
Motor data entered during
Auto-Tuning was incorrect.
• Motor data entered to T1 parameters does not match motor nameplate. Enter the
correct data.
• Restart Auto-Tuning and enter the correct information.
Auto-Tuning did not complete
within designated time frame.
• Check and correct faulty motor wiring.
• Disconnect the motor from machine and perform Auto-Tuning.
Values calculated by the drive
are outside the allowable
parameter setting ranges.
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.
Er-11
Motor Speed Fault (detected only when Auto-Tuning is enabled)
Cause
Possible Solutions
Torque reference is too high.
(Enabled in OLV only.)
• Increase the acceleration time (C1-01).
• Disconnect the machine from the motor, if possible.
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.
Attempted Auto-Tuning without
motor connected to the drive.
Connect the motor and perform Auto-Tuning.
Current detection signal error.
Replace the drive.
5.5 Auto-Tuning Fault Detection
152
YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide
