Tweco 250i Multi Process Welding Inverter 2RT Wire Feeder - Manual (Page 30)

TRANSMIG 250i INSTALLATION/SETUP
INSTALLATION/SETUP 3-12 Manual 0-5187
Function Left Display
Right Display
(Factory De-
fault Values)
Limits Comments
MIG Operator
Controls
MIG/CNTL LOCL LOCL - REMT
LOCL = Local control of the Wirespeed
and Voltage with the machines controls.
REMT = Remote control of the Wirespeed and
Voltage with an accessory device.
Pre Flow (MIG
Setting)
PRE-/FLOW 0.1 S 0.0 – 5 S
Shielding gas flows for the time specified before
an arc is initiated.
Run In RUN/IN 70% 30 – 150 % Wirespeed runs as a percentage of preview wire-
speed until an arc is struck.
Post Flow (MIG
Setting)
POST/FLOW 0.5 S 0.0 – 30 S
Shielding gas flows for the time specified after
an arc has extinguished.
Burn Back BURN/BACK 0.15 S 0.00 – 1.00 S The time difference between turning the wire feed
OFF before the voltage is turned OFF.
Wire Sharp WIRE/SHRP ON OFF – ON
Wire Sharp adds a burst of current at the end of
a weld to remove the ball at the end of the wire.
This improves the restart of the next weld.
Spot SPOT OFF OFF – ON
Spot is used to weld two thin plates together at
a desired location by melting the top & bottom
plates together to form a nugget between them.
The weld time is set by the Spot Time.
Spot Time
(Only shown/
e n a b l e d i f
Spot=ON)
SPOT/TIME 2.0 S 0.1 – 20.0 S Spot Time is the time used for the Spot weld
mode.
Stitch STCH OFF OFF – ON
Stitch is used to weld two or more components
by stitch or interval weld together.
The weld time is set by the Stitch Time and the
non weld time is set by the Dwell Time.
Stitch Time
(Only shown/
e n a b l e d i f
Stitch=ON)
STCH/TIME 2.0 S 0.2 – 4.0 S
Stitch Time is the time used for the weld time in
Stitch weld mode.
Dwell Time
(Only shown/
e n a b l e d i f
Stitch=ON)
DWEL/TIME 0.5 S 0.1 – 1.0 S
Dwell Time is the time used for the non weld time
in Stitch weld mode.
Arc Type ARC-/TYPE AUTO AUTO – CV-M
Auto is an optimized arc control for dip transfer
welding with minimal spatter on mild steel with
mixed shielding gases. CV-M is the traditional
constant-voltage arc control for all other welding.
Wire Feed Speed
Units
WFS/UNIT MPM MPM – IPM
MPM provides preview wirespeed in Metres
Per Minute.
IPM provides preview wirespeed in Inches Per
Minute.