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28 YASKAWA TOMPYEULA5001C LA500 Installation and Operation Instructions
Code Name Causes Possible Solutions
The load is too large. • Decrease the load.
• Examine the machine area to see if, for
example, the motor shaft is locked.
The drive detected a minor fault
during Auto-Tuning.
1. Stop Auto-Tuning.
2. Examine the minor fault code and
remove the cause of the problem.
3. Do Auto-Tuning again.
Er-12 Current Detection Error
There is a phase loss in the drive
input power. (U/T1, V/T2, W/T3)
Examine and repair motor wiring.
The current exceeded the current
rating of the drive.
The output current is too low.
• Check the motor wiring for any short
circuits between the wires.
• Check and turn ON any magnetic
contactors used between motors.
• Replace the control board or the drive.
For information about replacing the
control board, contact Yaskawa or your
nearest sales representative.
You tried Auto-Tuning without a
motor connected to the drive.
Connect the motor and do Auto-Tuning.
There was a current detection
signal error.
Replace the control board or the drive. For
information about replacing the control
board, contact Yaskawa or your nearest sales
representative.
FRL
Speed Reference
Missing
If no speed reference is selected at
start, the drive will trigger an
“FrL” fault.
Select speed reference before start.
GF Ground Fault
Overheating caused damage to the
motor or the motor insulation is
not satisfactory.
Measure the motor insulation resistance, and
replace the motor if there is electrical
conduction or unserviceable insulation.
The motor main circuit cable is
contacting ground to make a short
circuit.
• Examine the motor main circuit cable for
damage, and repair short circuits.
• Measure the resistance between the
motor main circuit cable and the ground
terminal. If there is electrical conduction,
replace the cable.
An increase in the stray
capacitance of the cable and the
ground terminal caused an
increase in the leakage current.
• If the wiring length of the cable is more
than 100 m, decrease the carrier
frequency.
• Decrease the stray capacitance.
There was a problem with the
drive hardware.
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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