Troubleshooting
6
6.5 Faults
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 479
Code Name Causes Possible Solutions
EF4 External Fault (Terminal S4)
MFDI terminal S4 caused an external fault through an
external device.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S4.
External Fault [H1-04 = 20 to 2B] is set to MFDI
terminal S4, but the terminal is not in use.
Correctly set the MFDI.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
EF5 External Fault (Terminal S5)
MFDI terminal S5 caused an external fault through an
external device.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S5.
External Fault [H1-05 = 20 to 2B] is set to MFDI
terminal S5, but the terminal is not in use.
Correctly set the MFDI.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
EF6 External Fault (Terminal S6)
MFDI terminal S6 caused an external fault through an
external device.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S6.
External Fault [H1-06 = 20 to 2B] is set to MFDI
terminal S6, but the terminal is not in use.
Correctly set the MFDI.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
EF7 External Fault (Terminal S7)
MFDI terminal S7 caused an external fault through an
external device.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
The wiring is incorrect. Correctly connect the signal line to MFDI terminal S7.
External Fault [H1-07 = 20 to 2B] is set to MFDI
terminal S7, but the terminal is not in use.
Correctly set the MFDI.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
Err EEPROM Write Error
There was a problem with the EEPROM hardware. • 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.
Electrical interference corrupted the data while it was
writing to the EEPROM of the drive.
• Push ENTER Key.
• Set the parameters again.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
FAn1 Drive Cooling Fan Fault
The cooling fan stopped operating correctly. • 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.
The circulation fan is damaged. • 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.
Note:
Do a Fault Reset to clear the fault.
To Next Page
Loading...
Need help?
General
