Tweco 250i Transmig Inverter - Manual (Page 25)

INSTALLATION/SETUP TRANSMIG 250i
Manual 0-5187 3-7 INSTALLATION/SETUP
To access the Arc Control function, push inward on the right knob and hold it for approximately 2 seconds. This feature
can be accessed and adjusted during welding.
The left display will change to show the Arc Control parameter name that is in effect for the current MIG or STICK
Modes and the right display will show its present value. Use the right knob to change the value. When the desired
value is selected, press inward again on the knob without turning it and release it to exit the Arc Control function and
save the value.
Weld Modes Arc Control Function Left Display Right Display Limits
MIG Inductance INDU 25% (default) 0 – 100 %
STICK Arc Force ARC- / FRCE 50% (default) 0 – 100%
Table 3-2
9. Left Digital Display
MIG Mode
This digital meter is used to display the pre-set (preview) Wirefeed Speed in Metres Per Minute (MPM) in MIG mode
and actual welding amperage of the power source when welding. At times of non-welding, the digital meter will dis-
play a pre-set (preview) value of Wirefeed Speed. This value can be adjusted by varying the Left Knob (Control No 7).
STICK and LIFT TIG Modes
The digital meter is used to display the pre-set (preview) amperage in STICK / LIFT TIG modes and actual welding
amperage of the power source when welding. At times of non-welding, the amperage meter will display a pre-set
(preview) value in both STICK and LIFT TIG modes. This value can be adjusted by varying the Left Knob (Control No 7).
When welding, this digital meter will display actual welding amperage in all modes.
At the completion of welding, the digital meter will hold the last recorded amperage value for a period of approximately
10 seconds in all modes. The amperage meter will hold the value until; (1) any of the front panel controls are adjusted
in which case the unit will revert to preview mode, (2) welding is recommenced, in which case actual welding amper-
age will be displayed, or (3) a period of 10 seconds elapses following the completion of welding in which case the
unit will return to preview mode.
The display is also used for providing error messages to the user and showing other information, which will be ex-
plained in Section 5.
10. Right Digital Display
MIG Mode
This digital meter is used to display the pre-set (preview) Voltage in MIG mode and actual welding voltage of the power
source when welding. At times of non-welding, the digital meter will display a pre-set (preview) value of Voltage. This
value can be adjusted by varying the Right Knob (Control No 8).
STICK and LIFT TIG Modes
This digital meter is used to display the Welding Output Terminal Voltage in STICK / LIFT TIG modes during non-welding
or welding. This value can not be adjusted by varying the Right Knob (Control No 8).
When welding, this digital meter will display actual welding voltage in all modes.
At the completion of welding, the digital meter will hold the last recorded voltage value for a period of approximately
10 seconds in all modes. The voltage meter will hold the value until; (1) any of the front panel controls are adjusted in