📄 USER’S MANUAL THC-1 - Rev.2
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                   THC-1 - TORCH HEIGHT CONTROL

 

 

                                                                           MAY 2023





TABLE OF CONTENTS


 

1.0         OVERVIEW

This module allows controlling the height the plasma torch head relative to work piece during plasma CNC operation, it supports either raw torch head voltage or an input of 0-10VDC, the ARC OK, UP and DOWN outputs are isolated.

2.0         FEATURES

  • Open collector to optoisolated output working at 5 to 24VDC.
  • Built-in Voltage Divider for connecting to the voltage on the torch or can use the 0-10VDC from a voltage divider from the plasma.
  • LCD Screen.
  • 10 to 30VDC Power Terminal (+24 Typical).
  • Isolated Power Connection.
  • Din Rail Mountable.
  • Divider input.

 

 

3.0         DESCRIPTION

 

 

 

4.0         TERMINAL BOARD

4.1     POWER

Requires a 10 to 30VDC at 100mA Power Supply, “This board is electrically isolated through a DC-DC converter.”


                                                  

 

4.2     DIVIDED INPUT

 

 

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Divided input is adjustable according to the plasma splitter.


 

4.3     TORCH VOLTAGE

 

 

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It is preferable to use the divided voltage instead of the torch voltage. The Torch voltage can be very high and there could be many safety implications in wiring this to the controller. The high voltage could also be a possible source of noise. Use it as a last resource.

 

4.4     OUTPUT SIGNALS

Voltage applied can be from 5 to 80VDC@50mA, outputs signal optoisolated Open Collector.

                                 
                                         



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It is recommended to capture and send to the controller the ARC OK signal coming directly from the plasma machine itself.  If wiring is difficult, then use the terminals of the THC unit.


5.0         CONFIGURE MENU

                       

  • Push the knob to enter configuration mode.
  • Navigate through the configuration menu by pressing the knob.
  • Turn the knob to adjust the value.
  • Push the knob to set the value and navigate to the next parameter or until you reach the run mode.

6.0         DESCRIPTION SCREEN

6.1      SET POINT (SP)

SP is the target voltage to be achieved.

                                 

 

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If auto_SetPoint is activated the knob it's disabled


6.2      VOLTAGE ARC (ARC)

Limit from 40 to 400VDC, True Voltage measured at the terminals or the voltage divider.

 

                                      

6.3      HYSTERESIS (HYS)

Is the tolerance or (+/-) voltage range used to generate an adjustment.  The torch height is not commanded to adjust if the true voltage is inside the specified range.  It can be between 2 to 32VDC.

                                       
                                     

 

6.4      DELAY TIME (DT)

Torch motion starts the number of seconds you set as DT after the ARC signal is determined. This can be a value between 0.1 to 9.9 seconds.

                                       

 

6.5      TEST MODE (TEST)

 

  • Press the knob three times to enter test mode.
  • Turn the knob up or down to adjust the spindle's movement.
  • To exit test mode, press the knob once.

                                                                   

 

6.6      DIVIDED VOLTAGE CONFIGURATION

 

  • Press the knob three times to enter the setting mode
  • Turn the knob to adjust the value.
  • Press the knob to set the split voltage

                                                                     

6.6      ANALOG SMOOTING

This data smoothest the voltage reading. This can be a value between 0 to 3.

                                                                     

6.7      ANTI-DIVE

 If the plasma torch moves over space, the THC will see it as a voltage spike.  Setting a max voltage value will allow the THC to ignore the voltage spike and prevent the torch from dying.  This can be a value between 50 and 300V. 

                                                                       

 

6.8      AUTO_SETPOINT

 Automatically establishes the SetPoint based on the specified cutting height.

 

 

If auto_SetPoint is activated the knob it's disabled and the word Auto is displayed on the screen

                                               

 

7.0         WIRING SAMPLE

 



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DISCLAIMER

Use caution. CNC machines can be dangerous. Neither IGNITE, LLC nor Arturo Duncan is liable for any accidents resulting from the improper use of these devices.  This product is not a fail-safe device, and it should not be used in life support systems or in other devices where its failure or possible erratic operation could cause property damage, bodily injury, or loss of life.