Tweco 141i Fabricator - Manual (Page 40)

Fabricator 141i
INSTALLATION, OPERATION AND SETUP 3-10 Manual 0-5145
Trigger Switch
Remote Wirespeed in MIG (GMAW/FCAW) mode
Remote Amps in LIFT TIG (GTAW) mode
Remote Volts in
MIG (GMAW/FCAW)
1
2
3
4
5
6
7
8
W V
3 4 5
6 7 8
1 2
Negative
Spool Gun Motor
Positive
Art # A-10421_AC
Figure 3-7: Remote Control Socket
Socket Pin Function
1 Spool gun motor (0V)
2 Trigger Switch Input
3 Trigger Switch Input
4 Spool gun motor (+24V DC)
5 5k ohm (maximum) connection to 5k ohm remote control potentiometer.
6 Zero ohm (minimum) connection to 5k ohm remote control potentiometer.
7
Wiper arm connection to 5k ohm potentiometer for the remote control of the Wirespeed in MIG mode.
Wiper arm connection to 5k ohm potentiometer for the remote control of the Amperage (Weld Current)
in LIFT TIG mode.
8 Wiper arm connection to 5k ohm remote control Volts MIG mode potentiometer.
Table 3-3
Note that the Local/ Remote Switch (Control No. 18) located in the wirefeed compartment should be set to
Remote for remote amperage/voltage controls to operate.
9. Multifunction Control - Voltage, Down Slope & Arc Force
The multifunction control knob is used to adjust Voltage (MIG Mode), Down slope (LIFT TIG Mode) and Arc
Force (STICK Mode) depending on the welding mode selected.
NOTE
The preview functionality provided on this power source is intended to act as a guide only. Some
differences may be observed between preview values and actual welding values due to factors including
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.
When MIG Mode is Selected
In this mode the control knob is used to adjust the MIG welding voltage of the Power Source. The welding
voltage is increased by turning the knob clockwise or decreased by turning the knob counterclockwise. The
optimum voltage level required will depend on the type of welding application. The setup chart on the inside
of the wire feed compartment door provides a brief summary of the required output settings for a basic range
of MIG welding applications.