YASKAWA iQpump1000 - Page 255

HOA Keypad Display Fault Name
Wiring is incorrect
• Properly connect the signal lines to the terminals assigned for external fault detection
(H1-oo = 20 to 2B).
• Reconnect the signal line.
Multi-function contact input setting is
incorrect
•
Check for unused terminals set for H1-oo = 20 to 2B (External Fault).
• Change the terminal settings.
HOA Keypad Display Fault Name
Err
EEPROM Write Error
Data cannot be written to the EEPROM
Cause Possible Solution
Noise has corrupted data while writing 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.
Hardware problem
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.
HOA Keypad Display Fault Name
FAn
Internal Fan Fault
Fan or magnetic contactor failure
Cause Possible Solution
Internal cooling fan has malfunctioned
• 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 Peripheral Devices & Options chapter.
Fault detected in the internal cooling fan or
magnetic contactor to the power supply.
• 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.
HOA Keypad Display Fault Name
FDBKL Wire Break
PID Feedback Loss
The analog input programmed for PID feedback has risen above 21 mA or fallen below 3 mA.
Cause Possible Solution
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).
• 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.
HOA Keypad Display Fault Name
Flow Rate Limit Drive output speed is being limited due to the Flow Rate (U1-83).
Cause Possible Solution
Excessive or insufficient Flow.
If Flow Rate Limiter is activating improperly, confirm parameter settings P6-01, P6-26, P6-27, P6-28, and
P6-29.
HOA Keypad Display Fault Name
GF
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.
Cause Possible Solution
Motor insulation is damaged
• Check the insulation resistance of the motor.
• Replace the motor.
5.2 Fault Detection
YASKAWA TOEP YAIP1W 01F YASKAWA AC Drive - iQpump1000 User Manual
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Troubleshooting