Tweco 300 ACDC Arcmaster - Manual (Page 27)

21
Socket Pin Function
A Torch Switch Input (24V) to energize weld current.
(connect pins A & B to turn on welding current)
B Torch Switch Input (0V) to energize weld current
(connect pins A & B to turn on welding current)
C 5k ohm (maximum) connection to 5k ohm remote control potentiometer
D Zero ohm (minimum) connection to 5k ohm remote control potentiometer
E Wiper arm connection to 5k ohm remote control potentiometer
G Mains Earth
F,H,I,J,K,L Not Used
M OK to move current detect signal for robotics applications
N OK to move current detect signal for robotics applications
Table 4-1. Socket Pin Functions
3 Positive Terminal
Welding current flows from the Power Source via heavy duty Dinse type terminal (Size 35-70). It is
essential, however, that the male plug is inserted and turned securely to achieve a sound electrical
connection.
4 Negative Terminal
Welding current flows from the Power Source via heavy duty Dinse type terminal (Size 35-70). It is
essential, however, that the male plug is inserted and turned securely to achieve a sound electrical
connection.
CAUTION
Loose welding terminal connections can cause overheating and result in the male plug being
fused in the bayonet terminal.
5 Gas Outlet
The Gas Outlet is a BSP-3/8 inch female gas fitting.
6 ON/OFF Switch
This switch connects the Primary supply voltage to the inverter when in the ON position. This
enables the Power Supply.
WARNING
When the welder is connected to the Primary supply voltage, the internal electrical
components may be at 240V potential with respect to earth.
7 Input Cable
The input cable connects the Primary supply voltage to the equipment.
8 Gas Inlet
The Gas Inlet is a BSP-3/8 inch female gas fitting.