Tweco iCNC XT - Manual (Page 105)

iCNC XT
Manual 0-5299 APPENDIX A-7
• Plate sensing force enabled activates motor current based plate recognition. When enabled Plate sensing force is used to recognize a
plate. This feature can be used together with ohmic plate contact as a backup for the ohmic contact, or it can be used as primary plate
sensing feature: ie cutting under water
• Plate sensing force Sets the contact force, range 1-190. Increasing the value will cause a plate to bend under pressure and makes plate
sensing more inaccurate (in case ohmic sensing is not active)
• Max allowed force Sets the maximum allowed force used to drive the lifter, range 1-1000. This value is also used when Plate sensing
force is disabled.
• MAX window Real time values of the maximum forces to the lifter
• Drive force Real time value of applied force to the lifter
• Reset Resets the max values
A.7 I/O Bits Tab
This tab displays the status of various system signals for diagnostic purposes. I/O bits are separated to inputs (signals that come from other
devices to iHC) and outputs (signals that go from the iHC to other devices).
• I/O bits are also separated to general I/O bits, lifter I/O bits, servo I/O bits.
• If the system has two torches both lifters and servos have their own I/O bits.
General
Input
1. Hold - AVC turns off when Hold inbit turns active. Hold is used during cutting to prevent the torch from diving to the plate when move-
ment slows down ie: during tight corner.
2. Torch Collision - In case lifter has a breakaway/collision sensor, signals from the sensor can be wired into Torch Collision input. Torch
Collision will activate System Error output to CNC
3. Maintain ARCV - Inbit used with bevel head cutting.
4. Spare - Reserved for future use
Output
5. Main Arc - Outbit to CNC which becomes active when the main arc inbit is activated and the transfer delay has passed.
6. IHS Ready - Outbit becomes active when the lifter reaches the Ignition Height.
7. System Error (Inverted) – Can be connected to CNC controllers external stop
8. Sense Relay – 24Vdc Output for voltage divider board.