7.5 Minor Faults/Alarms
276 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Code Name Causes Possible Solutions
E5
MECHATROLINK Watchdog
Timer Err
The drive detected a watchdog circuit exception
while it received data from the controller.
Examine the MECHATROLINK cable connection. If this error
occurs frequently, examine the wiring and decrease the effects of
electrical interference as specified by these manuals:
• MECHATROLINK-II Installation Guide (MECHATROLINK
Members Association, manual number MMATDEP011)
• MECHATROLINK-III Installation Manual
(MECHATROLINK Members Association, publication
number MMATDEP018)
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.
• If the drive detects this error, it will operate the motor as specified by the stop method set in F6-25 [MLII Watchdog Error Sel].
Code Name Causes Possible Solutions
EF
FWD/REV Run Command Input
Error
A forward command and a reverse command were
input at the same time for longer than 0.5 s.
Examine the forward and reverse command sequence and correct
the problem.
Note:
• If the drive detects EF, the motor will ramp to stop.
• 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 Causes Possible Solutions
EF0 Option Card External Fault
The communication option card received an
external fault from the controller.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
Programming error occurred on the controller side. Examine the operation of the controller program.
Note:
• The drive detects this error if the alarm function on the external device side is operating.
• 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.
• Set the stopping method for this fault in F6-03 [Comm Ext Flt Select (EF0)].
Code Name Causes Possible Solutions
EF1 External Fault (Terminal DI1)
MFDI terminal DI1 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 DI1.
External Fault [H1-01 = 2C to 2F] is set to MFDI
terminal DI1, but the terminal is not in use.
Correctly set the MFDI.
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 Causes Possible Solutions
EF2 External Fault (Terminal DI2)
MFDI terminal DI2 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 DI2.
External Fault [H1-02 = 2C to 2F] is set to MFDI
terminal DI2, but the terminal is not in use.
Correctly set the MFDI.
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 Causes Possible Solutions
EF3 External Fault (Terminal DI3)
MFDI terminal DI3 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 DI3.
External Fault [H1-03 = 2C to 2F] is set to MFDI
terminal DI3, but the terminal is not in use.
Correctly set the MFDI.
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 Causes Possible Solutions
EF4 External Fault (Terminal DI4)
MFDI terminal DI4 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 DI4.
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