Omron Q2A Series Technical Manual page 277

Code Name
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
Code Name
EF5 External Fault (Terminal DI5)
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
Code Name
EF6 External Fault (Terminal DI6)
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
Code Name
EF7 External Fault (Terminal DI7)
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
Code Name
EF8 External Fault (Terminal DI8)
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
Code Name
EP24v External Power 24V Supply
Note:
• Set o2-26 [Ext24V Mode Warning Display] to enable or disable EP24v detection.
• The drive will not output an alarm signal for this alarm.
Code Name
FAn Internal Fan Fault
Note:
If the drive detects this error, the terminal assigned to H2-01, H2-02, and H2-03 = 4 [2NO-2CM Func Selection, 3NO-3CM Func Selection, and 4NO-4CM Funct Selection =
Alarm] will be ON.
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Causes
External Fault [H1-04 = 2C to 2F] is set to MFDI
terminal DI4, but the terminal is not in use.
Causes
MFDI terminal DI5 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-05 = 2C to 2F] is set to MFDI
terminal DI5, but the terminal is not in use.
Causes
MFDI terminal DI6 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-06 = 2C to 2F] is set to MFDI
terminal DI6, but the terminal is not in use.
Causes
MFDI terminal DI7 caused an external fault through
an external device.
The wiring is incorrect.
External Fault [H1-07 = 2C to 2F] 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 = 2C to 2F] is set to MFDI
terminal DI8, but the terminal is not in use.
Causes
The voltage of the main circuit power supply
decreased, and the 24 V power supply is supplying
power to 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.
7.5 Minor Faults/Alarms
Possible Solutions
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 DI5.
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 DI6.
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 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
• Examine the main circuit power supply.
• Turn ON the main circuit power supply to run the drive.
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.
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