iPAK2 User Guide
22
2.4.7. Retract
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. Use the Simple setting if no Retract function is required.
Simple
When the Retract Input is switched off, the Retract 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 Retract Air Valve switches on and the
electrodes open fully. Welding cannot 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 cannot proceed in this case.
Retract input
HAV output
Start input
WAV output
Retract input
HAV output
Start input
WAV output
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