Section 14 Tutorials 83
03 Using the Retract functions
The Retract function allows the welding head to open in two stages.
The fully open position allows the work piece to be positioned between the electrodes.
The middle position allows the electrodes to close onto the work piece in order to weld.
iPAK2 has four Retract modes that can be used depending on the application. The mode is selected in the
Configuration settings.
Simple
When the Retract Input is switched off, the High Lift Air Valve switches off and the electrodes close to
the mid position. Welding can proceed in this case.
When the Retract Input is switched on, the High Lift Air Valve switches on and the electrodes open fully.
Welding will not proceed in this case.
Hi-lift +
A pulse on the Retract Input causes the High Lift Air Valve to switch on and close the electrodes to the
mid position. Welding can proceed in this case.
Whilst the High Lift Air Valve is on, a pulse on the Retract Input causes the valve to switch off and the
electrodes go to the fully open position. Welding will not proceed in this case.
Retract input
HAV output
Start input
WAV output
Retract input
HAV output
Start input
WAV output
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