Tweco iCNC XT - Manual (Page 76)

iCNC XT
5-18 OPERATION Manual 0-5299
5.6.10 IHS On/Off/Auto Switch
This is a 3 position switch controlling either the IHS or the Floating head, depending on machine options.
INITIAL HEIGHT SENSING SYSTEM
• In Manual position the system activates the IHS output relay.
• In Auto position the iCNC® XT activates the IHS output relay automatically
• In the middle position the IHS output relay is disabled.
FLOATING HEAD SYSTEM
• In Manual position the fl oating head will lower onto the material surface .
• In Auto position the fl oating head will lower automatically as commanded by the controller.
• In the middle (OFF) position the fl oating head will be disabled and stays in the UP position.
NOTE:
Some height controllers use the IHS signal to also activate the plasma. Control fl ow in this case: Height controller senses the
plate, torch rises to ignition height and the height controller ignites the plasma.