Specifications

7 Troubleshooting
YASKAWA ELECTRIC TOEP C710616 27A YASKAWA AC Drive - A1000 Quick Start Guide 29
Current detection error
• One or all output phases are lost.
• Current is either too low or exceeds the drives rating.
• The current sensors are faulty.
• Check the wiring.
• Make sure, that the drive rating fits to the motor.
• Check the load. (Auto-Tuning should have been performed
without the load connected.)
• Replace the drive.
Leakage Inductance Error
Drive was unable to complete tuning for leakage inductance
within 300 seconds.
• Check all wiring and correct any mistakes.
• Double check the motor rated current value that was entered
to T1-04 for Auto-Tuning.
• Check the motor rated current value written on the motor
nameplate and enter the correct value.
Rated current alarm
• The torque reference exceeded 20% during Auto-Tuning.
• The calculated no-load current is above 80% of the motor
rated current.
• Check the V/f pattern setting.
• Perform Auto-Tuning without the load connected.
• Check the input data and repeat Auto-Tuning.
Motor iron-core saturation alarm
• Calculated core saturation values out of range.
• Incorrect data was entered.
• Check the input data.
• Check the motor wiring.
• Perform Auto-Tuning without load connected.
Rated current alarm Check the input data and repeat tuning.
Adjusted Slip Calculation Error
The slip that was calculated is outside the allowable range.
• Make sure the data entered for Auto-Tuning is correct.
• Execute Rotational Auto-Tuning instead. If not possible, try
Stationary Auto-Tuning 2.
Resistance Tuning Error
The resistance value that was calculated is outside the
allowable range.
• Double check the data that was entered for the Auto-Tuning
process.
• Check the motor and motor cable connection for faults.
Leakage Inductance Alarm
The leakage inductance value that was calculated is outside
the allowable range.
Double check the data that was entered for the Auto-Tuning
process.
No-Load Current Alarm
• The entered no-load current value was outside the
allowable range.
• Auto-Tuning results were less than 5% of the motor rated
current.
• Check and correct faulty motor wiring.
• Double check the data that was entered for the Auto-Tuning
process.
Digital Operator Cause Corrective Action
Er-12
Er-13
End1
End2
End3
End4
End5
End6
End7