B-20
OPERATION
POWER FEED™ 25M NNS
START OPTIONS
The Start Options available depend upon the process and weld mode selected.
END OPTIONS
The End Options available depend upon the process and weld mode selected.
Process
SMAW (Stick)
All GMAW (MIG)
and FCAW (Flux-
cored)
GTAW (TIG)
Start Options
----
Preflow
Time
Run-In WFS
Start time, WFS
and Volts
----
Effect / Range
----
0 – 25.0
seconds
Auto, OFF,
30 in/min to
weld WFS
0 – 10.0 sec-
onds
----
Description
----
Run-In sets the wire feed speed from the time the trigger is pulled until an arc is
established or 2.5 seconds.
Use run-in for softer arc starts.
The Start Procedure controls the WFS and Volts for a specified time at the begin-
ning of the weld. During the start time, the machine will ramp up or
down from the Start Procedure to the preset Welding Procedure.
----
Process
SMAW (Stick)
All GMAW (MIG)
and FCAW (Flux-
cored)
GTAW (TIG)
Start Options
----
Spot Timer
Crater Time,
WFS and Volts
Burnback Time
Postflow Time
Postflow Time
Effect / Range
----
0 – 10.0
seconds
Auto,
0 – 0.25
seconds
0 – 25.0
seconds
0 – 25.0
seconds
Description
----
Sets the length of time for welding when the trigger is pulled. If the trigger is
released before the Spot Timer is complete, welding stops.
This option has no effect in 4-Step Trigger Mode.
Crater Procedure controls the WFS and volts for a specified time at the end of
the weld after the trigger is released. During the Crater time, the machine will
ramp up or down from the Weld Procedure to the Crater Procedure.
Crater is not commonly used with STT processes.
The burnback time is the amount of time that the weld output continues after the
wire stops feeding. It prevents the wire from sticking in the puddle and prepares
the end of the wire for the next arc start.
Adjusts the time that shielding gas flows after the welding output turns off.
Adjusts the time that shielding gas flows after the welding output turns off.
