Home USB/RS485 Torch height controller (THC)

Coming soon....

myCNC-THC-RU01

Torch height controller for plasma cutting applications - myCNC-THC-RU01. The board is based on 32 bit ARM CPU.
THC controller works with myCNC-UP2/UP3 series of CNC controllers and myCNC software.

Main features:

  • Advanced algorithm for torch height control:
    • Automatic controls torch-to-work distance during plasma cutting proccess;
    • Automatic detection cutting-over-edge to prevent the torch fall;
    • Automatic sets the piercing height (if used with initial height sensing IHS);
  • Two-channel Arc Voltage measure (Power Source voltage and Arc Voltage) for improved trace algorithm;
  • Connection to Host PC/Controller through RS485 of USB connection;
  • Input/output for Initial Height Sensors (IHS);
  • Additional Open Collector keys/PWM outputs and opto-isolated inputs with control interface from HOST PC software;

THC board drives:

  • DC brush motors (up to 48V @ 5A DC) through integrated CMOS H-Bridge DC brushedmotor driver
    or
  • Stepper motor driver with integrated STEP/DIR outputs
    or
  • Sends back to CNC controller commands to control torch-to-work distance trough third axis (Z-axis);

 

 

 myCNC THC (Torch height control) for plasma cutting applications

 

Electrical characteristics

Power supply (THC contoller)

 24V DC @ 0.5A
Power supply (Brushed DC driver) 24...48V DC @ 1...5A
THC board specification

Host PC/Controller connection

 RS485/RS422/USB

STEP/DIR output

 5V, RS422 compatible

Arc Voltage measure range -300V

Number of open-collector general purpose/PWM outputs(24V @ 50mA)

 4

Number of opto-isolated inputs (slow - 20us)

 4
Number of opto-isolated inputs (fast - 1us)  1
Arc Voltage measure ADC inputs (0-300V)  2
RS485 port
 1
USB port
 1

THC controller board CPU

 32-bit ARM 70MHz