Lincoln Electric POWER FEED 10M Operator's Manual page 50

B-28
MACHINE FUNCTIONALITY BY WELD PROCESS
STT AND STT II (NONN-SYNERGIC)
Use the following tables to review how the machine functions (output controls, arc control, Start options and weld
options) for the weld modes listed in the top table.
G MA W-S T T WE L D MODE
MA T E R IA L
G A S
Steel CO Ar/CO
2,
Stainless
Ar/He/CO
(With Hot Start)
Steel
CO Ar/CO
2,
Stainless
Ar/He/CO
(Synergic STT)
Steel CO
2
Ar/CO
Steel
Stainless
Ar/He/CO
Stainless
Ar/CO
(Synergic STT,
Open Root)
Steel
CO
2
Stainless
Ar/He/CO
ARC CONTROL
EFFECT / RANGE
PEAK CURRENT Peak Current acts similar to an arc
pinch control. Peak Current sets
the arc length and promotes good
fusion. Higher peak current levels
will cause the arc to broaden
momentarily while increasing arc
length. If set too high, globular
transfer may occur. Setting it too
low may cause instability and wire
stubbing. Best practice is to adjust
for minimum spatter and puddle
agitation.
BACKGROUND CUR-
Background Current controls the
RENT overall heat input in the weld.
TAIL OUT
Tail out provides additional power
(STT ll MODES ONLY) without the molten droplet becom-
ing too large. Increase as neces-
sary to add heat input without
increasing arc length. Often this
results in faster travel speeds.
Note that as tail out increases, the
peak current and/or background
current may need to be reduced.
OPERATION
OUTPUT CONTROL KNOBS (There is no Voltage control when STT welding.)
WIR E S IZE
0.035 0.045 0.052
110 126 126
2
110 126 126
2
123 124 124
2
123 124 124
2
111 117 120
112 118 121
2
127 129 -----
2
131 133 -----
2
113 119 122
135 137 -----
2
DESCRIPTION
POWER FEED ® 10M SINGLE WIRE FEEDER
200
WFS AMPS
LESS MORE
DEPOSITION DEPOSITION
START OPTIONS
PREFLOW TIME
0 to 10 seconds Adjusts the time the gas flows
after the trigger is pulled and
prior to feeding wire.
RUN-IN WFS: Run-in sets the wire feed
Off, 50 to150 in/min. speed from the time the trigger
is pulled until an arc is estab-
lished.
Start Procedure The Start Procedure is not
commonly used with STT pro-
cedures.
WAVEFORM CONTROL TECHNOLOGY
110
IR PORT
WELD MODE
ARC CONTROL
END OPTIONS
PARAMETER RANGE
Spot Timer: Adjusts the time welding will continue
0 to 120.0 Seconds even if tigger is still pulled. This option
has no effect in 4-Step Trigger Mode.
Postflow Time: Adjusts the time that shielding gas
0 to 25.0 seconds flows after the welding output
turns off.
Crater Procedure Crater Procedure is not commonly
used in STT wels procedures.
Burnback: The burnback time is the
0 to .25 Seconds 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.
B-28
----
VOLTS TRIM
FUNCTION
STEEL
.035"
SETUP
STT
START OPTIONS
END OPTIONS
SET
FUNCTION