Automatic THC Arc Voltage Height Controller For Cnc Plasma Cutting Machine This equipment adopts high brightness digital tube and LED light as arc pressure and signal indication, clear display, stable and anti-interference, long service life. The device uses buttons and digital knobs for parameter adjustment and operation, simple and easy to use. The panel of this equipment adopts 60 degree inclined mounting method, which is suitable for the operation of portable CNC cutting machine. The device is built-in sub-pressure plate, and its full-angle metal shielding, the overall volume is smaller, better anti-interference. Built-in easy parameter setting, you can change the operating parameters flexibly in order to adapt to various complex working conditions. By changing the parameters, it can be adapted to external working conditions without any adjustment to the internal hardware of the device. The effective level of the input signal can be set. The input signal is valid at low level by default. It can be changed to high level. Input and output are isolated by optocoupler, which effectively protects the equipment from overvoltage and interference electromagnetic pulse damage. Arc start relay and arc start success relay adopt OMRON power relay, which works reliably. The real-time level of the input signal can be viewed during various work processes. Different working processes are interlocked to ensure no misoperation. Dynamic piercing function can be used when starting the arc if the height adjuster has piercing delay. During the cutting process, real-time monitoring of whether the arc is really starting, if the arc break occurs in the middle of the process, the height adjuster will promptly notify the CNC system and close the arc starting relay, to avoid a long period of time in the case of arc break to the empty arc. In the process of automatic height adjustment, to ensure that the actual arc pressure always closely follow the set arc pressure, basically no static difference. In the process of automatic height adjustment, the set value of arc pressure can still be changed, so that the torch height can be fine-tuned in real time during the cutting process. In the process of automatic height adjustment, the collision signal can be fed back to the numerical control system to avoid the numerical control system still advancing after the collision. In the process of automatic height adjustment, the arc pressure intelligent adjustment function can be used. After the cutting is completed, the height adjuster automatically raises the torch, and the height can be set arbitrarily.