Firepower MST 140i, Operating Manual

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Firepower MST 140i
INSTALLATION, OPERATION AND SETUP 3-10 Manual 0-5338
8. Remote Control
The 8 pin socket is used to connect the TIG Gun, remote control device to the welding
Power Source. To make connections, align keyway, insert plug, and rotate threaded collar
fully clockwise.
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
Art # A-12440
Figure 3-7: Remote Control Socket
Socket Pin
Function
1 Not used
2
Trigger Switch Input
3
Trigger Switch Input
4
Not used
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 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.
8