HOA Keypad Display
Error Name
Er-08
Rated Slip Error
Cause
Possible Solutions
Motor data entered during Auto-Tuning was
incorrect.
• Make sure the data entered to the T1 parameters match the information written on the motor
nameplate.
• Restart Auto-Tuning and enter the correct information.
Results from Auto-Tuning are outside the
parameter setting range or the tuning process took
too long.
• Check and correct faulty motor wiring.
• Perform Rotational Auto-Tuning.
The load was too high during rotational Auto-
tuning.
• Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be
uncoupled make sure the load is lower than 30%.
• If a mechanical brake is installed, make sure it is fully lifted during tuning.
HOA Keypad Display
Error Name
Er-09
Acceleration Error
Cause
Possible Solutions
The motor did not accelerate for the specified
acceleration time.
• Increase the acceleration time (C1-01).
• Disconnect the machine from the motor if possible.
Torque limit when motoring is too low
(L7-01 and L7-02)
• Check L7-01 and L7-02 settings.
• Increase the setting.
The load was too high during Rotational Auto-
Tuning.
• Disconnect the motor from machine and restart Auto-Tuning. If motor and load cannot be
uncoupled make sure the load is lower than 30%.
• If a mechanical brake is installed, make sure it is fully lifted during tuning.
HOA Keypad Display
Error Name
Er-11
Motor Speed Fault
Cause
Possible Solutions
Torque reference is too high.
• Increase the acceleration time (C1-01).
• Disconnect the machine from the motor if possible.
HOA Keypad 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 any problems.
The current exceeded the current rating of the
drive.
• Check motor wiring for a short between motor lines.
• Close any magnetic contactors used between motors.
• Replace the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
The current is too low.
Attempted Auto-Tuning without motor connected
to the drive.
Connect the motor and restart Auto-Tuning.
Current detection signal error.
Replace the control board or the entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
HOA Keypad Display
Error Name
Er-13
Leakage Inductance Error
Cause
Possible Solutions
Drive was unable to complete tuning for leakage
inductance within 300 seconds.
• Check all wiring and correct any mistakes.
• Check the motor rated current value written on the motor nameplate and enter the correct value to
T1-04.
HOA Keypad Display
Error Name
Er-17
Reverse Prohibited Error
Cause
Possible Solutions
Drive is prohibited from rotating the motor in
reverse while attempting to perform Inertia
Tuning.
• Inertia Auto-Tuning cannot be performed if the drive is restricted from rotating in reverse.
• Assuming it is acceptable for the application to rotate in reverse, set b1-04 to 0 and then perform
Inertia Tuning.
5.6 Auto-Tuning Fault Detection
218
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
