Thermal Arc 201 TS Service Manual page 32

THERMAL ARC 161STL, 201TS
I. 8 Pin Control Socket
The 8 pin Torch Trigger Socket is used to connect the TIG Torch Trigger Switch to the welding Power Source. To make
connections, align keyway, insert plug, and rotate threaded collar fully clockwise.
Remote Welding Current Control is available through the front panel of this unit. The remote will only go to the maximum value
that is set at the panel. If the panel is set to 100 amps, the remote can't go above 100 amps when fully adjusted.
J. ON/OFF Switch (located on rear panel not shown)
This switch controls the Mains Supply Voltage to the Power Source.
Operation
1 2 3 4 5 6 7 8
5k Ohms
Art # A-09815_AB
Plug Pin
1
2 Torch Switch Input (24V) to energize
weld current. (connect pin 2&3 to turn on
welding current)
3 Torch Switch Input (0V) to energize weld
current. (connect pin 2&3 to turn on
welding current)
4
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 remote
control potentiometer
8
NOTE
2 1
5 4 3
8 7 6
Front View of 8 Pin Socket
Function
4-4
OPERATION
Manual 0-5148