Tweco VAF4 Transmig - Manual (Page 23)

TRANSMIG VAF4
Manual 0-5231 3-5 INSTALLATION, OPERATION AND SETUP
8. Left Digital Display
Left display is a 4- digit display.
In advanced programming mode, this display is used to display advanced features details or simply "----". Please
refer to Subsection 3.08 for Advanced Features Details.
When welding, this digital meter will display WFS in Inches Per Minute (IPM) or Metres Per Minute (MPM) and
actual welding amperage of the power source; it can also simply display "----" when the VAF4 is connected to a
power source without a control signal on pin U of the 19 pin interconnection. The VAF4 uses this signal on pin U
of the 19 pin interconnection to display welding amps, if this signal is not present from the power source, set the
display to show "----". Press left knob and select the information on left display. At times of non-welding, the digital
meter will display a pre-set (preview) WFS value. This value can be adjusted by turning the Left Knob (Control No. 6).
At the completion of welding, the digital meter will hold the last recorded value for a period of approximately 10
seconds. The 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 amperage 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. Please refer to Subsection 4.05 for Error Codes
and Remedies.
9. Right Digital Display
Right display is a 4- digit display.
This digital meter is used to display the pre-set (preview) Voltage in MIG mode and actual welding voltage of the
power source or simply "----" when the VAF4 is connected to a power source without a control signal on pin C of
the 19 pin interconnection. The VAF4 uses this signal on pin C of the 19 pin interconnection to display welding
volts, if this signal is not present from the power source, set the display to show "----". Press right knob and select
the information on right display. At times of non-welding, the digital meter will display a pre-set (preview) value
of Voltage. This value can be adjusted by turning the Right Knob (Control No 7).
At the completion of welding, the digital meter will hold the last recorded voltage value for a period of approxi-
mately 10 seconds in all modes. The voltage 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 voltage 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. Please refer to
Subsection 4.05 for Error Codes and Remedies.
10. 2T - 4T- SPOT Trigger Mode Control Button
Press and release the button to change the selected operating mode of the trigger. The selected mode can be “2T”,
“4T” or "Spot” operation. The red indicator next to the button will illuminate to identify which mode is selected.
In the 4T mode once the weld has been started you can release the trigger and continue welding until the trigger
is activated again or the welding arc is broken to stop the welding arc. Please refer to Subsection 3.25 - 3.28 for
more details.