This arc pressure height controller is suitable for automatic height control of plasma torches on CNC cutting machines, and is recommended for cutting currents below 100A without high-frequency arcing plasma.
The VHC-200 is a simple arc‑pressure height controller designed for automatic height control of plasma torches on CNC cutting machines. It works by detecting the plasma arc voltage and adjusting the torch height accordingly, supporting cutting currents up to 100 A without high‑frequency ignition.
The manual covers product introduction, technical parameters, functional description, main control board, voltage‑divider board, initial positioning methods (protective‑hat or proximity‑switch), interface circuits, height‑adjustment box settings, supply range, and fault maintenance, with detailed wiring diagrams and troubleshooting steps. This manual is written in Chinese.
| Working voltage | AC24V ±10 %, 50/60 Hz, 100 W |
|---|---|
| Motor type | DC24V permanent‑magnet DC motor |
| Operating temperature | -10 °C ~ 60 °C |
| Initial positioning method | Protective‑hat contact or proximity‑switch |
| Arc‑pressure range | 90 V – 170 V |
| Control accuracy | ±5 V |
The controller can use either a protective‑hat contact method or a proximity‑switch method to detect when the torch contacts the workpiece and set the initial height.