System Description:
The PL-1 torch lifter height control is done through the CNC software, resulting in less hardware and more reliability. The system is flexible and allows the user to:
• Program pierce height, retract distance, IHS slowdown height, and conditional height freeze
• Set initial height sensing via ohmic position detection
• Set the arc voltage range (50-300 volts DC)
• Make servo loop adjustments for position and velocity gain
• Set semi or full automatic operation
The PL-1 uses a 200W AC digital brushless servo motor and twin steel guide ways with a precision ball screw to provide travel lengths of four or ten inches, depending on machine application. Moving elements are sealed with protective steel strips and combine for tracking accuracy of +/- 0.3 arc volts.
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