Alarm List
Alarm Number (4000 to 4999)
Alarm List-666
791 Sub code: Error No. from
welder.
Arc welding power source
error
(1)Check if the selection of motor is correct, or confirm the settings of
C parameter C09.
(2)Check that the welding wire does not slip, or the wire is fed as
instructed by the feeding command.
(3)Check that the wire stick out is not excessively short or long.
(4)Check that the range set in C parameter C29 is not too narrow.
(5)Check if the wire, shielding, etc. are correctly set.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode,
and then contact your Yaskawa representative about occurrence
status (operating procedure).
4279 MOTOWELD
MOMENTARY
OVER-CURR
1 Error from welder 1. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
2 Error from welder 2. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
3 Error from welder 3. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
4 Error from welder 4. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
5 Error from welder 5. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
6 Error from welder 6. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
7 Error from welder 7. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
8 Error from welder 8. Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
108 Sub code: Error No. from
welder.
Arc welding power source
error
(1)Check that short-circuit or the earth grounded of the output cable.
(2)May be power circuit broken. Contact your Yaskawa representative.
4280 MOTOWELD
OVER-VOLTAGE
1 Error from welder 1. Arc welding power source
error
Contact your Yaskawa representative.
2 Error from welder 2. Arc welding power source
error
Contact your Yaskawa representative.
Alarm
Number
Alarm Name
Sub
Code
Meaning Cause Remedy