Tweco 550i Transmig - Manual (Page 29)

TRANSMIG 350i, 450i, 550i
Manual 0-5205 3-9 INSTALLATION, OPERATION AND SETUP
NOTE
The preview functionality provided on this power source is intended to act as a guide only. Some
difference may be observed between preview values and actual welding values due to factors includ-
ing the mode of welding, differences in consumables/gas mixtures, individual welding techniques
and the transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are
required (in the case of procedural work), it is recommended that alternate measurement methods
be utilized to ensure output values are accurate.
14. Digital Voltmeter / Inductance meter (MIG) / Downslope (TIG) / Arc Force (Stick)
The digital volt meter is used to display both the pre-set voltage (MIG mode only) and actual output volt-
age (all modes) of the power source. It is also used to display inductance and down slope time.
At times of non-welding, the VOLT meter will display a pre-set (preview)
value in GMAW (MIG) mode.
This value can be adjusted by varying the volts control (item 9)
and the VOLTS light will illuminate to indicate VOLTS are being
displayed.
When welding, the volt meter will display actual welding voltage in all modes.
At the completion of welding, the volt meter will hold the last recorded voltage value for a period of ap-
proximately 10 seconds in all modes. The volt 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.
In MIG mode when setting the INDUCTANCE value, the
A-10646
light will illuminate, and the display will
read INDUCTANCE. The range of adjustment is from 0 to 100.
In TIG mode when setting DOWNSLOPE the SEC light will illuminate, and the display will read DOWNSLOPE.
The range of adjustment is from 0 to 10 seconds.
In Stick mode when setting the ARCFORCE the display will read ARCFORCE. The range of adjustment is
from 0 to 100.
Arc force control provides an adjustable amount of welding force (or "dig") control. This feature can be
particularly beneficial in providing the operator the ability to compensate for variability in joint fit-up
in certain situations with particular electrodes. In general increasing the arc force control toward "100"
(maximum arc force) allows greater penetration control to be achieved. Arc force is increased by turning
the control knob clockwise or decreased by turning the knob anti-clockwise.
NOTE
The preview functionality provided on this power source is intended to act as a guide only. Some
difference may be observed between preview values and actual welding values due to factors includ-
ing the mode of welding, differences in consumables/gas mixtures, individual welding techniques
and the transfer mode of the welding arc (ie dip versus spray transfer). Where exact settings are
required (in the case of procedural work), it is recommended that alternate measurement methods
be utilized to ensure output values are accurate.
VOLTS SEC
A-10632_AB
3 2 . 0