6.4 Faults
342 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Code Name Causes Possible Solutions
dWF2 DriveWorksEZ Fault 2 There was a fault in the DriveWorksEZ
program.
Examine the DriveWorksEZ program and remove
the cause of the fault. This is not a drive fault.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
dWF3 DriveWorksEZ Fault 3 There was a fault in the DriveWorksEZ
program.
Examine the DriveWorksEZ program and remove
the cause of the fault. This is not a drive fault.
Note:
Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
dWFL DriveWorksEZ Fault There was a fault in the DriveWorksEZ
program.
Examine the DriveWorksEZ program and remove
the cause of the fault. This is not a drive fault.
Note:
Do a Fault Reset to clear the fault.
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 Guide
(MECHATROLINK Members Association,
manual number MMATDEP018)
Note:
• 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 F6-25 [MECHATROLINK Watchdog Error
Sel].
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.
A programming error occurred on the
controller side.
Examine the operation of the controller program.
Note:
• The drive detects this fault if the alarm function on the external device side is operating.
• 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 F6-03 [Comm External Fault (EF0)
Select].
Code Name Causes Possible Solutions
EF1 External Fault (Terminal
S1)
MFDI terminal S1 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
S1.
External Fault [H1-01 = 20 to 2B] is set
to MFDI terminal S1, 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
EF2 External Fault (Terminal
S2)
MFDI terminal S2 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
S2.
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