19 Troubleshooting
100 YASKAWA TOEPC71061732E HV600 Drive Installation & Primary Operation
Code Name Causes Possible Solutions
EF0 Option Card External Fault
The communication option received an external fault
from the controller.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
EF1 to EF7 External Fault (Terminal Sx)
MFDI terminal Sx caused an external fault through an
external device.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal Sx.
External Fault [H1-01 = 20 to 2B] is set to MFDI
terminal Sx, but the terminal is not in use.
Correctly set the MFDI.
Err EEPROM Write Error
There was a problem with the EEPROM hardware. • Re-energize the drive.
• If the fault stays, replace the control board or the drive. Contact
Yaskawa or your nearest sales representative to replace the
board.
FAn1 Drive Cooling Fan Fault
The cooling fan stopped operating correctly. • Examine cooling fan operation.
• Re-energize the drive.
• Examine U4-03 [Cooling Fan Ope Time] and U4-04 [Cool Fan
Maintenance]. If the performance life of the cooling fan is
expired or if there is damage to the fan, replace the fan.
FDBKL WIRE Break
The analog input from the terminal set for PID
Feedback [H3-xx = B] is more than 21mA or less
than 3mA for longer than 1 s in these conditions:
• b5-82 = 2 [Feedback Loss 4～20mA Detect Sel =
Fault]
• b5-01 ≠ 0 [PID Mode Setting ≠ Disabled]
• H3-01 or H3-09 = 2 [Terminal A1/A2 Signal Level
Selection = 4 to 20 mA]
Make sure that you install the PID feedback source and it operates
correctly.
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.
HFB High Feedback Sensed
The feedback level is more than the level set in Y1-11
[High Feedback Level] for the time set in Y1-12
[High Feedback Lvl Fault Dly Time].
• Decrease the feedback level less than Y1-11.
• Set Y1-11 and Y1-12 correctly.
HIAUX High PI Aux Feedback Level
PI Auxiliary Feedback is more than the level set in
YF-12 [PI Aux Control High Level Detect] for the
time set in YF-13 [PI Aux High Level Detection Time]
in these conditions:
• The drive operates in AUTO Mode.
• The output frequency > 0.
• Decrease the PI Auxiliary Feedback level less than YF-12.
• Set YF-12 and YF-13 correctly.
HLCE High Level Communication Errors
Communication data error occurred between the
option and the master drive when you use Gateway
function.
The master drive detects oFxxx and the slave drive
detects HLCE.
Examine the wiring between the option and the master drive and
remove the cause of the fault.
LF Output Phase Loss
The motor main circuit cable is disconnected. Connect motor main circuit cable wiring. Correct wiring errors in
the main circuit drive input power.
LF2 Output Current Imbalance
Phase loss occurred in the wiring on the output side
of the drive.
Examine for wiring errors or disconnected wires on the output side
of the drive, and repair problems.
LFB Low Feedback Sensed
The feedback level is less than the level set in Y1-08
[Low Feedback Level] for the time set in Y1-09 [Low
Feedback Lvl Fault Dly Time].
• Increase the feedback level to more than Y1-08.
• Set Y1-08 and Y1-09 correctly.
LOAUX Low PI Aux Feedback Level
When the drive operates in AUTO Mode or HAND
Mode, PI Auxiliary Feedback is less than the level set
in YF-09 [PI Aux Control Low Lvl Detection] for the
time set in YF-10 [PI Aux Control Low Lvl Det Time]
and the drive is running.
• Increase the PI Auxiliary Feedback level to be more than YF-09.
• Set YF-09 and YF-10 correctly.
To Next Page
Loading...
