YASKAWA GA800 Technical Reference page 369

Code Name
EF7 External Fault (Terminal S7)
Note:
Do a Fault Reset to clear the fault.
Code Name
EF8 External Fault (Terminal S8)
Note:
Do a Fault Reset to clear the fault.
Code Name
Err EEPROM Write Error
Note:
Do a Fault Reset to clear the fault.
Code Name
FAn Internal Fan Fault
Note:
Do a Fault Reset to clear the fault.
Code Name
FAn1 Drive Cooling Fan Fault
Note:
Do a Fault Reset to clear the fault.
Code Name
FbH Excessive PID Feedback
Note:
• The drive detects this fault if the PID feedback input is more than the level set in b5-36 for longer than b5-37.
• Do a Fault Reset to clear the fault.
• If the drive detects this fault, it will operate the motor as specified by the stop method set in b5-12 [Feedback Loss Detection Select].
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Causes
MFDI terminal S7 caused an external fault through an
external device.
The wiring is incorrect.
External Fault [H1-07 = 20 to 2B] is set to MFDI
terminal S7, but the terminal is not in use.
Causes
MFDI terminal S8 caused an external fault through an
external device.
The wiring is incorrect.
External Fault [H1-08 = 20 to 2B] is set to MFDI
terminal S8, but the terminal is not in use.
Causes
There was a problem with the EEPROM hardware.
Electrical interference corrupted the data while it was
writing to the EEPROM of the drive.
Causes
The circulation fan stopped operating correctly.
Causes
The cooling fan stopped operating correctly.
The circulation fan is damaged.
Causes
The FbH detection level is set incorrectly.
There is a problem with the PID feedback wiring.
The feedback sensor is not operating correctly.
A fault occurred in the feedback input circuit of the
drive.
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal S7.
Correctly set the MFDI.
Possible Solutions
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal S8.
Correctly set the MFDI.
Possible Solutions
• 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.
• Push ENTER Key.
• Set the parameters again.
Possible Solutions
• Examine circulation fan operation.
• Re-energize the drive.
• Examine U4-03 [Cooling Fan Ope Time] and U4-04 [Cool Fan
Maintenance]. If there is damage to the circulation fan or if the
performance life of the fan is expired, replace the fan.
Possible Solutions
• 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.
• Examine circulation fan operation.
• Re-energize the drive.
• Examine U4-03 [Cooling Fan Ope Time] and U4-04 [Cool Fan
Maintenance]. If there is damage to the circulation fan or if the
performance life of the fan is expired, replace the fan.
Possible Solutions
Adjust b5-36 [PID High Feedback Detection Lvl] and b5-37 [PID
High Feedback Detection Time].
Correct errors with the PID control wiring.
Examine the sensors on the control device side.
Replace the control board or the drive. For information about
replacing the control board, contact Yaskawa or your nearest sales
representative.
7.4 Fault
7
369