Наверное он имел в виду вот это:
http://www.ebay.com/itm/Proffessional-C ... 27c11230b5
Лот уже заканчивается поэтому вот:
Proffessional CNC Plasma THC ( Torch Height Controller )
User's guide [ EN ]
http://proma-elektronika.pl/download/doc/thc_en.pdf
Very easy to install
100% satisfied Allegro customers (Poland) - My nick is PromaElektronika
This device works with MACH eg
https://www.youtube.com/watch?v=Ouu-5mLDNwU
The device is a modern analog - digital controller of height of a plasma torch over a cut material. It is based on analysis of change of voltage generated by a source of plasma.
Simplified block diagram:
Specification:
Supply voltage (V) 5 – 35V DC
Maximum supply current 120mA
Maximum input voltage 300V DC
Ability of HV/HF ionization voltage suppressing 20kV
Ability of HV/HF ionization frequency suppressing >10kHz
Duty cycle (%) 100%
Duty cycle of HV / HF suppression (%) 100%
Rated load 1,25A / 60V DC
Relay reliability (minimum amount of cycles) under load of 5V / 10mA : 500*10^6
Degree of protection of enclosure IP IP20
Weight (g) 180g
Dimensions (width*length*height) 33*89*65
Mounting DIN 35 rail
