This manual introduces the basic functions, working principles, interface circuits, and adjustment box settings of arc pressure height controller VHC-400 in detail. It is suitable for the use, installation and maintenance of this product.
This manual introduces the VHC-400 arc‑height controller, a device used on CNC plasma cutters to automatically control torch height based on plasma arc voltage. It explains the working principle, basic functions such as manual operation, arc‑pressure monitoring, automatic height control, and the required initial positioning methods (protective‑cap or proximity‑switch).
Detailed sections cover technical parameters, panel functions, the main control board, isolation board, wiring diagrams, height‑adjustment box settings, supply range, and a comprehensive fault‑maintenance guide with common issues and solutions. This manual is written in Chinese.