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Extended
Weld
(See p. 6-5)
The control had to
restart the weld
schedule due to
insufficient secondary
current during a weld.
Low current limit is set too
high.
Re-program the Low Current
Limit setup parameter.
Unusual condition in the
secondary.
Check for improper part fit-up,
dirty material, worn electrodes,
bad kickless cables or shunts,
or loose connections in the
secondary circuit.
Incorrect measurement of the
primary current. (Both the
weld processor and the firing
card are involved in current
measurement. A failure on
one of these cards may cause
this fault to occur.)
Check for loose wiring at the J3
connector on the firing card.
Secure the cable that runs
between the firing card and the
processor. Check for bad con-
nector. Replace as necessary.
Initial Power
Factor Out of
Range
(See p. 6-4)
The control executed
a power factor test
fire and the PF val-
ues were not within
range.
Also check the
schedule timing and
part fitup. Verify that
the correct valve is
programmed in the
weld schedule.
The inductance of the welding
circuit was changed.
Check for any changes in the
secondary loop.
Incorrect measurement of
power factor.
Make sure the current wires
and voltage sense leads are
secure, with the correct termi-
nals of the firing card.
Current coil resistor on firing
card or load resistor on SCR
assembly is not connected
properly.
Confirm that resistor(s) are
properly seated and connected.
Power factor values
programmed incorrectly.
Check the power factor
settings.
Power
Factor Limit
(See p. 6-4)
The power factor
detected while
executing a weld
schedule does not fall
within the desired
range.
Also check for poor
part fitup, arcing and
problems with fac-
tors such as the gun
timing.
Any variation in the welding
circuit inductance is reflected
in the power factor.
Check for any changes in the
secondary loop.
Incorrect measurement of
power factor.
Make sure the current wires
and voltage sense leads are
secure, with the correct termi-
nals of the firing card.
Power factor values are
programmed incorrectly.
Check the power factor
settings.
Message
Explanation
Possible Cause
Remedy
Содержание MedWeld 3005
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