Yaskawa iQpump Micro - Manual (Page 169)

Digital Operator Display Fault Name
Multi-function contact input setting is
incorrect
• Check for unused terminals set for H1-oo = 20 to 2F (External Pump Fault).
• Change the terminal settings.
Digital Operator 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 drive.
Hardware problem If the problem continues, replace the drive.
Digital Operator Display Fault Name
FAn Internal Cooling Fan Failure
Cause Possible Solution
Internal cooling fan has malfunctioned
• Cycle power to the drive.
• Check for fan operation.
• If the problem continues, replace the fan.
Digital Operator Display Fault Name
FDBKL Wire Break
(FDB-L)
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.
Digital Operator 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 in models 2V0020 to 2V0069 and 4V0011 to 4V0038.
Cause Possible Solution
Motor insulation is damaged
• Check the insulation resistance of the motor.
• Replace the motor.
A damaged motor cable is creating a short
circuit
• 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.
Excessive leakage current at the drive
output
• Reduce the carrier frequency.
• Reduce the amount of stray capacitance.
The drive started to run during a current
offset fault or while coasting to a stop
• 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.
Hardware problem If the problem continues, replace the drive.
Digital Operator Display Fault Name
HFB
High Feedback
The feedback signal is too high.
Cause Possible Solution
5.2 Fault Detection
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual 169
5
Troubleshooting