Thermal Arc pro-life 250s, Operating Manual

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Socket Pin Function
1 Earth (Ground)
2
Torch Switch Input (24V) to energize weld current.
(connect pins 2 & 3 to turn on welding current)
3 Torch Switch Input (0V) to energize weld current
(connect pins 2 & 3 to turn on welding current)
4
Connect pin 4 to pin 8 to instruct machine that a remote current control device
is connected (12V DC supply)
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 Connect pin 4 to pin 8 to instruct machine that a remote current control device
is connected (0V)
3
Positive Terminal
Welding current flows from the Power Source via heavy duty Dinse type terminal. 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. It is
essential, however, that the male plug is inserted and turned securely to achieve a sound
electrical connection.
CAUTION 2
Loose welding terminal connections can cause overheating and result in the male plug
being fused in the bayonet terminal.
5 ON/OFF Switch
This switch connects the Primary supply voltage to the inverter when in the ON position.
This enables the Power Supply.
WARNING 6
When the welder is connected to the Primary supply voltage, the internal electrical
components maybe at primary potential with respect to earth.
6
Input Cable
The input cable connects the Primary supply voltage to the equipment.
PRO-LITE 250S
June 29, 2005 30