Make sure that the machine is properly grounded. Plasma cutters generate voltage dangerous for human health and life. No grounding may result in electric shock and / or damage electronic equipment
Model: Compact THC 150
Power supply: 7-35V DC
Outputs: Relay - Up / Down / ArcOk
Range : 30-300V DC (1000 VDC)
Separator HV/HF : Yes
Integrated Voltage Divider: Yes 1:50
A popular controller of the plasma torch’s height with a relay outputs Up / Down and ARC OK – a confirmation of the cutting arc.
It is intended to cooperate with CNC control systems, which support THC signals up / down, for example MACH 3, LinuxCNC, CNConv. Thanks to the integration with a voltage divider, the connection is very simple.
Example of connection:
If connecting directly to the “power” terminals,
you should ensure the connection as short as possible due to the formation of large disturbances.
You should also use test leads with a proper insulation – matched to the maximum voltage of the plasma cutter. Because of the very high level of interferences and voltage “pins”, it is recommended to supply the + and – potential by means of separate wires what minimizes the risk of dielectric breakdown.
Exampe how use in LinuxCNC
Example of MACH 3 configuration: