10.3.12
E012 Short Circuit-Check Gun Lift Setting
Fatal, meaning you have to power down to continue welding
No
Acknowledge, meaning the error will exist as long as the unit is
powered on.
(Note, welding can continue while the error exists)
No
Description:
If the stud voltage of the power unit is less than 20V while welding for
over 100ms,
the output is considered shorted. When the unit is shorted,
it has the potential for the
capacitor banks to go out of balance and da-
mage the unit (if operated this way or
with the voltage on one side above the rating of the switch board 400VDC). The unit
aborts welds and
displays this error if this condition occurs during the main arc time.
If
this occurs during the plunge time, the error is not displayed, but the
weld is
aborted - as this is expected to happen during plunge time.
Likely problems or items to check - in order from most likely to least
likely:
1. Gun lift setting is causing too many or too large of material transfers, which are
shorting the arc for over 100ms. If this happens,
the lift should be adjusted to
overcome the transfers. If the unit
were to continue to deliver current through a
shor
2. Determine if it is an internal problem by trying different types of
studs and gun
settings. If the unit consistantly reports this error,
it is internal. Otherwise, an
3. Inspect wiring from control board JP2 pins 1 and 4 to the weld
outputs. Make sure
the control can sense the voltage appropria-
tely.
4. Replace control board.
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