Omron Q2A Series Technical Manual page 259

Code Name
EF7 External Fault (Terminal DI7)
Note:
Do a Fault Reset to clear the fault.
Code Name
EF8 External Fault (Terminal DI8)
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 [Fdback Loss Select Mode].
Code Name
FbL PID Feedback Loss
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Causes
MFDI terminal DI7 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-07 = 20 to 2B] is set to MFDI
terminal DI7, but the terminal is not in use.
Causes
MFDI terminal DI8 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-08 = 20 to 2B] is set to MFDI
terminal DI8, 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.
There is a problem with the power supply of the
electromagnetic contactor and the circulation fan.
Causes
The cooling fan stopped operating correctly.
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.
Causes
The FbL detection level is set incorrectly.
There is a problem with the PID feedback wiring.
The feedback sensor is not operating correctly.
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 DI7.
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 DI8.
Correctly set the MFDI.
Possible Solutions
• Re-energize the drive.
• If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact the
manufacturer or your nearest sales representative.
• Push .
• Set the parameters again.
Possible Solutions
• Examine circulation fan operation.
• Re-energize the drive.
• Check U4-03 [Fan Oper.Time] and U4-04 [Cool Fan
Maintenance]. If the performance life of the circulation fan is
expired or if there is damage to the fan, replace the fan.
1. Re-energize the drive.
2. If the fault stays, replace the control board or the drive. For
information about replacing the control board, contact the
manufacturer or your nearest sales representative.
Possible Solutions
• Examine cooling fan operation.
• Re-energize the drive.
• Check U4-03 [Fan Oper.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.
Possible Solutions
Adjust b5-36 [PID HiHi Limit Level] and b5-37 [PID HiHi
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 the manufacturer or your
nearest sales representative.
Possible Solutions
Adjust b5-13 [Fdback Loss Lvl] and b5-14 [Fdback Loss Time].
Correct errors with the PID control wiring.
Examine the sensors on the control device side.
7.4 Faults
7
259