YASKAWA YRC1000 Instructions Manual page 76

Alarm Alarm Sub
No. Name Code
4287 SHORTCIRC 795
UIT COUNT
OVER (BEAD
NG)
4288 AC-UNIT 126
ERROR
129
623
6 Alarm and Error
6.1 Alarm
Meaning
The count of short circuit is largely
decreased.(The bead NG).
AC unit temperature anomaly
AC unit over-voltage
AC welding method setting error
6-22
Remedy
(1) Check that setting current is not
too high.
(2) Check that range set in C
parameter C62 is not too narrow.
(3) Check that the wire stick out is
not excessively short.
(1) Check the ambient
temperature(45 degrees or below)
and the usage rate(60%)
(2) Check for no dirt or clogging in
the dust-proof filter. Check or replace
as needed.
(3) Make sure thermal guard of AC
unit is not broken.
(1) Check the usage rate (60%)
(2) Check the length of the power
cable is round-trip less than 20m.
(3) Check a power cable does not
wind up a coil.
(4) Check the setting of the input
voltage select switch for the AC unit.
It can not AC welding for the AC unit
is not connected.
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