Filter
Top Products
10. Troubleshooting
10 - 16
Alarm No.
53
Excessive error 2:
A difference between the actual and theoretical motor positions during servo OFF exceeded the setting
value.
Cause of occurrence Investigation items Remedy
1
The axis moved during servo OFF.
Check the motor brake operation. Correctly and faulty sections.
2
The NC stopped the follow-up function
during servo OFF.
Check the NC parameters. Set the NC parameters according to the
machine specifications.
Check the OD1 (SV026) setting value.
RAPID
3
The excessive error detection width is
too small.
Is OD2=
60×PGN1
/ 2 satisfied?
Set the standard value according to the
rapid traverse rate and position loop gain.
If the actual machine position is separated by the distance set with OD1 from the ideal machine position in
respect to the commanded position, the position will be within the shaded sections shown below.
Supplement
Alarm No.
55
External emergency stop error:
There is no contactor shutoff command, even after 30 seconds has passed since the external emergency
stop was input.
Cause of occurrence Investigation items Remedy
1
An error occurred during main
emergency stop.
Check the emergency stop input and
sequence program.
Improve the emergency stop sequence.
2
Parameters are incorrectly set. Check the PTYP (SV036) external
emergency stop setting.
Set correctly.
Alarm No.
5F
External contactor error:
A contact of the external contactor is welding. Or the contactor fails to be ON during ready ON.
Cause of occurrence Investigation items Remedy
1
The contactor turned ON during READY
OFF.
Check whether the contactor contact is
melted.
Replace the contactor.
2
The contactor turned OFF during ready
ON.
Check whether the contactor control
output connector (CN9) is disconnected.
Correctly connect.
Servo OFF
Servo ON
Time
OD2
OD2
Ideal machine position
Commanded position
OD1
OD1
Position