Lincoln Electric IM761 POWER FEED 15M - Manual (Page 24)

B-10 OPERATION B-10
Spot
The Spot function is useful when making many short,
repetitive welds. When the Spot function is active, the
power source will weld for a set time after the trigger
has been pulled and an arc established. Once the
Spot time expires, the power source will continue to
the Crater function and Burnback function, if active.
The trigger must be released and pulled again to
make another weld and repeat the Spot cycle.
To change the Spot time, toggle the SELECT toggle
switch until the LED next to Spot is lit. The display will
show the present Spot time. Toggle the SET toggle
switch up and down to set a new Spot time.
The default Spot time is "OFF" (0.0 seconds.)
The Spot time is adjustable from 0.0 to 10.0 seconds
in 0.1 second increments.
POWER FEED 15M
Crater
The Crater function sets an endpoint WFS and
Voltage to achieve over a specified time period. At
the end of the weld when the trigger is released, the
crater time begins and the WFS and Voltage values
ramp from the welding WFS and Voltage to the crater
WFS and Voltage.
To change the Crater function values, toggle the
SELECT toggle switch until the LED next to Crater is
flashing. Rotate the WIRE FEED SPEED Knob to
adjust the Crater WFS and rotate the VOLTAGE /
TRIM KNOB to adjust the Crater Volts/Trim. Change
the Crater time by toggling the SET toggle switch up
and down to a new value.
The Crater time is adjustable from 0 to 10.0 seconds
in 0.1 second increments.
The default Crater time is OFF (0 seconds).
Burnback
The Burnback function continues current flow for a
specified time period at the end of the weld after wire
feeding has stopped. Burnback is used to prevent the
electrode from sticking in the weld puddle and to con-
dition the end of the electrode for the next arc start.
To change the Burnback function value, toggle the
SELECT toggle switch until the LED next to Burnback
is lit. The display will show the present Burnback
time. Toggle the SET toggle switch up and down to
set a new Burnback time.
The default Burnback time is "OFF" (0.0 seconds.)
The Burnback time is adjustable from 0.0 to 0.25 sec-
onds in 0.01 second increments.