YASKAWA iQpump1000 Quick Start Manual page 179

HOA Keypad Display
Err
Cause
Noise has corrupted data while writing to
the EEPROM
Hardware problem
HOA Keypad Display
FAn
Cause
Internal cooling fan has malfunctioned
Fault detected in the internal cooling fan or
magnetic contactor to the power supply.
HOA Keypad Display
FDBKL Wire Break
Cause
The analog input programmed for PID
feedback loss has risen above 21 mA or
fallen below 3 mA. This is effective only
when b5-12 Feedback Loss 4 to 20 mA
Detection Selection is set to 2 (fault).
HOA Keypad Display
GF
Cause
Motor insulation is damaged
A damaged motor cable is creating a short
circuit
Excessive leakage current at the drive
output
The drive started to run during a current
offset fault or while coasting to a stop
Hardware problem
HOA Keypad Display
HFB
YASKAWA TOEP YAIP1W 01A YASKAWA AC Drive - iQpump1000 Quick Start Guide
EEPROM Write Error
Data cannot be written to the EEPROM
• Press "ENTER" on the digital operator.
• Correct the parameter setting.
• Cycle power to the drive.
• If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the control board.
If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the control board.
Internal Fan Fault
Fan or magnetic contactor failure
• Cycle power to the drive.
• Check for fan operation.
• Verify the cumulative operation time of the fan with monitor U4-03, and verify the cumulative operation
time of the fan maintenance timer with U4-04.
• If the cooling fan has exceeded its expected performance life or is damaged in any other way, follow the
replacement instructions in the
• Cycle power to the drive.
• If the fault continues to occur, replace the power board/gate drive board or the entire drive.
• Contact Yaskawa or a Yaskawa representative for instructions on replacing the power board/gate drive
board.
PID Feedback Loss
The analog input programmed for PID feedback has risen above 21 mA or fallen below 3 mA.
• Confirm that the PID feedback source is installed and working properly.
• Drive response to this condition is controlled by b5-12, Feedback Loss 4 to 20 mA Detection Selection
and b5-13, Feedback Loss Go To Frequency.
• Auto-restart of this fault is controlled by L5-42, Feedback Loss Fault Retry Selection.
Ground Fault
• A current short to ground exceeded 50% of rated current on the output side of the drive.
• Setting L8-09 to 1 enables ground fault detection.
• Check the insulation resistance of the motor.
• Replace the motor.
• Check the motor cable.
• Remove the short circuit and reapply power to the drive
• Check the resistance between the cable and the ground terminal
• Replace the cable.
• Reduce the carrier frequency.
• Reduce the amount of stray capacitance.
• Set b3-01 to 1 to enable Speed Search at Start.
• Perform Speed Search 1 or 2 (H1-oo = 61 or 62) via one of the external terminals.
If the problem continues, replace the control board or the entire drive. Contact Yaskawa or a Yaskawa
representative for instructions on replacing the control board.
High Feedback
The feedback signal is too high.
Fault Name
Possible Solution
Fault Name
Possible Solution
Peripheral Devices & Options chapter.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
5.2 Fault Detection
.
5
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