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GF
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Ground Fault
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Overheating caused damage to the motor or the motor insulation is not satisfactory.
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Measure the motor insulation resistance, and replace the motor if there is electrical conduction or unserviceable insulation.
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The motor main circuit cable is contacting ground to make a short circuit.
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Examine the motor main circuit cable for damage, and repair short circuits.
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Measure the resistance between the motor main circuit cable and the ground terminal. If there is electrical conduction, replace the cable.
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An increase in the stray capacitance of the cable and the ground terminal caused an increase in the leakage current.
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If the wiring length of the cable is more than 100 m, decrease the carrier frequency.
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Decrease the stray capacitance.
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There was a problem with the drive hardware.
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Replace the control board or the drive. For information about replacing the control board, contact Yaskawa or your nearest sales representative.
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Note:
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The drive detects this fault if a current short to ground was more than 50% of rated current on the output side of the drive.
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Do a Fault Reset to clear the fault.
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L5-08 [Fault Reset Enable Select Grp2] disables the Auto Restart function.
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