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B-6
Trigger Mode Selection
COLD FEED
TRIGGER
2-STEP STD
4-STEP LOCK
SPOT
sequence (top to bottom) starting from the current
indicated selection.
Top Light - Indicates gun trigger has been selected to
perform the Cold Feed Forward function in exactly the
same manner as Cold Feed Forward key (See
Operation Keys - Cold Feed Keys) with the same
memory stored adjustable speed setting, and "Cld"
shown on the Voltage display.
Second Light - indicates 2-step (standard) trigger
mode.
1. Trigger closure energizes the solenoid valve,
then the wire feeder and the power source
after Preflow time.
2. Releasing the trigger turns off the wire feeder,
then power source after burnback time and
then the gas solenoid valve after Postflow time.
Third Light - indicates 4-step (lock) trigger mode.
This mode may be selected to include or exclude weld
current interlock. (See "4-Step Trigger Mode
Operation Selection" in this section for 4 step Trigger
Mode operation)
Bottom Light - indicates Spot Weld Mode, which will
only light if a spot time is set (See "Display Control
Keys" in this section). If set to 0.0 seconds, spot
mode light selection will be skipped. Trigger closure
energizes the gas solenoid valve, then wire feeder
and the power source. The spot timer starts when
current flows. The wire feeder and power source then
solenoid valve are all turned off when the spot on
timer times out even though the trigger is opened or is
still closed. Preflow/Postflow and burnback timers are
also functional in spot mode. (See "Display Control
Keys" in this section).
OPERATION
Trigger Mode Select key
- enables operator to
choose mode of operation
shown by the indicator
lights. Pressing key caus-
es
mode
lights
Display Control Keys
Timer Select key - enables operator to
TIMER
choose burnback, spot or gas timers, as
indicated by the appropriate light.
Pressing the key causes lights to
sequence (top to bottom, then all off) starting from the
to
current indicated selection.
When a timer is selected the Voltage display shows
the time setting in seconds, as indicated by "SEC" dis-
played on the speed display. The times are set using
the Voltage encoder knob.
1
PREFLOW
SPOT
BURNBACK
2
POSTFLOW
Second Light - indicates spot time is being displayed,
set 0.0 (as shipped) to 199.9 seconds.
Third Light - indicates burnback time is being dis-
played, set 0.00 (as shipped) to 0.25 seconds. This is
the time the arc power is delayed at the stop of the
weld, and should be set to the lowest time required to
prevent the wire sticking in the weld.
Bottom Light - indicates postflow time is being dis-
played, set 0.0 to 10.0 seconds (0.5 sec as shipped).
time the shielding gas flows after the wire feed and
power source are deactivated.
Pressing Timer Select Key again, or closing the gun
trigger, shuts all timer lights off, indicating weld
Voltage and Wire Feed Speed are again being dis-
played, and set by the appropriate encoder knob.
LN-10
Top Light - indicates preflow time
is being displayed, set 0.0 to 2.5
seconds (0.2 sec as shipped). This
is the time the shielding gas flows
before the wire feed and power
source are activated.
This is the
B-6
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Troubleshooting
