CNC requirements for plasma cutting systems
There are specific Computer Numerical Control (CNC) features that are necessary for integration with plasma cutting systems.
Remote on-off switch
The CNC must have a remote on-off switch. Refer to Install a remote on-off switch.
A feature of the control Printed Circuit Board (PCB) is that it offers redundancy to one remote on-off switch.
A 24 VDC (500mA) and return (GND) from the CNC
or controlling device to the expansion PCB
are necessary for redundant remote on-off for the expansion PCB and input to the control PCB. Make sure to use a separate discrete cable between the
redundant remote on-off input and main control PCB.
Note:
For information about how to do this, refer to Install a redundant remote on-off switch.
Adjustable settings
The CNC must allow the adjustment of the
following settings:
- Current setpoint
- Plasma cutflow
- Shield cutflow
- Gas mixing setpoints
Display settings
The CNC must show the following data:
- Plasma-gas type
- Shield-gas type
- Process-ID selection
- System-diagnostic codes
- Firmware version based on console type
The CNC must show the following data in real
time to troubleshoot and diagnose system operation:
- Chopper current
- Work-cable current
- System-status codes
- Chopper temperature
- Transformer temperature
- Coolant temperature
- Coolant flow
- Process-gas pressures
- Fan speeds
Diagnostics and troubleshooting
The CNC must be able to run the following
commands to diagnose and troubleshoot system operation:
- Test preflow gases
- Test pierceflow gases
- Test cutflow gases
- Test for gas system leaks
Note:
For more information about CNC commands, refer to the CNC Communication Protocol for the XPR Cutting System (809810).