BX18 Arc generator


The BX18 EDM arc generator is the latest product from BaxEDM. The BX18 arc generator is equipped with EtherCAT and comes with software components for LinuxCNC enabling the realisation of custom EDM machines with a very lean electrical architecture. These machines do not require a CNC hardware control solution anymore, as servos and the arc generator connect to the LinuxCNC PC directly over a standard EtherNet interface.

The following video explains the electrical architecture needed for a custom EDM machine which uses the BX18 arc generator and shows how to use it within LinuxCNC:


  • Single very compact universal 19″ 3U enclosure
  • High efficiency switched mode current source
  • Mains input voltage range 100-240V 50/60 Hz
  • EtherCAT interface
  • Hardware controlled EStop function
  • Output polarity by software control
  • LinuxCNC integration
  • Control of the arc generator configuration from within your CNC g-code
  • Fully configurable arc parameters
  • Arc current up to 30A
  • Cutting frequency up to 200 KHz
  • ISO-Frequency mode
  • ISO-Pulse mode (same amount of energy in each arc strike)
  • Differential sense input for accurate arc voltage measurements
  • All data I/O interfaces galvanically isolated
  • Workpiece edge finding mode
  • Switched 12V output for high voltage / EDM active warning light
  • Firmware updates through USB interface (additional features will be released in the form of SW updates)
  • Self diagnostics
  • Protected by hardware authentication and secure boot