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Code
Name
Err
EEPROM Write Error
FAn1
Drive Cooling Fan Fault
FDBKL
WIRE Break
GF
Ground Fault
HFB
High Feedback Sensed
HIAUX
High PI Aux Feedback Level
HLCE
High Level Communication Errors
HWL
High Water Level
LF
Output Phase Loss
LF2
Output Current Imbalance
LFB
Low Feedback Sensed
LOAUX
Low PI Aux Feedback Level
LOP
Loss of Prime
YASKAWA TOEPC7106171GA FP605 Drive Installation & Primary Operation
Causes
External Fault [H1-01 = 20 to 2B] is set to MFDI
terminal Sx, but the terminal is not in use.
There was a problem with the EEPROM hardware.
The cooling fan stopped operating correctly.
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, H3-09, or H3-05 = 2 [Terminal A1/A2/A3
Signal Level Selection = 4 to 20 mA]
Overheating caused damage to the motor or the motor
insulation is not satisfactory.
The motor main circuit cable is contacting ground to
make a short circuit.
An increase in the stray capacitance of the cable and
the ground terminal caused an increase in the leakage
current.
There was a problem with the drive hardware.
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].
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 is running.
• The output frequency > 0.
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.
• The digital input terminal set to H1-xx = BC
[MFDI Function Selection = High Water Level]
activated or is defective.
• The digital input terminal set to H1-xx = 1BC [!
High Water Level] deactivated or is defective.
The motor main circuit cable is disconnected.
Phase loss occurred in the wiring on the output side
of the drive.
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].
When the drive is running, 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].
The drive used the Y1-18 [Prime Loss Detection
Method] setting and measured a pump load that is
less than the level set in Y1-19 [Prime Loss Level] for
the time set in Y1-20 [Prime Loss Time], and the
output frequency is Y1-21 [Prime Loss Activation
Freq] or more.
20 Troubleshooting
Possible Solutions
Correctly set the MFDI.
• 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.
• 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.
Make sure that you install the PID feedback source and it operates
correctly.
Measure the motor insulation resistance, and replace the motor if
there is electrical conduction or unserviceable insulation.
• 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.
• If the wiring length of the cable is more than 100 m, decrease the
carrier frequency.
• Decrease the stray capacitance.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
• Decrease the feedback level less than Y1-11.
• Set Y1-11 and Y1-12 correctly.
• Decrease the PI Auxiliary Feedback level less than YF-12.
• Set YF-12 and YF-13 correctly.
Examine the wiring between the option and the master drive and
remove the cause of the fault.
• Decrease the water level.
• Adjust the terminal set to H1-xx = BC or 1BC.
Connect motor main circuit cable wiring. Correct wiring errors in
the main circuit drive input power.
Examine for wiring errors or disconnected wires on the output side
of the drive, and repair problems.
• Increase the feedback level to more than Y1-08.
• Set Y1-08 and Y1-09 correctly.
• Increase the PI Auxiliary Feedback level to be more than YF-09.
• Set YF-09 and YF-10 correctly.
• Examine for a dry well, air in the system, or no water in the
system. Use preferred priming method suggested by the pump
manufacturer to restart the pump.
• When there is resistance in the pump, let the system pump water
again.
• Set Y1-18 to Y1-21 correctly.
89
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