Sensor™ THC 379
Sensor THC
Sensor Torch Height Control Overview
Sensor™ THC is a proprietary Automated Torch Height Control system that is designed specifically
for use with your shape cutting control. Sensor™ THC utilizes the most current technology available
to provide superior plasma cut performance with unmatched ease of use.
During the plasma cut process, variations in the distance between the torch tip and the cut material
will affect the cutting arc voltage and ultimately, the quality of the cut. Through use of an automated
torch height control to maintain the appropriate cut height for the set arc voltage, we are able to
obtain the optimum cut quality regardless of variations in plate positioning.
Sensor™ THC is operated as a separate closed loop servo axis on the control and has several setup
parameters available to customize the system for optimal performance and individual requirements.
The THC system is made up of four parts: the control, the analog input card mounted in the control,
the voltage divider card and the mechanical slide with a motor to operate the slide. The voltage
divider card, which would be mounted in the plasma power supply, monitors the arc voltage of the
cutting process at the torch then transmits 1/40
th
of this voltage to the analog input card in the control
where it is multiplied up to the original value. This value is then compared to the selected Set Arc
Voltage. If the values are different, the control will raise or lower the torch on the slide to correct the
cut voltage. This Appendix will highlight the features which are unique to the Sensor™ THC.
For operation, this feature must first be enabled in the password machine setups. Setup parameters
specific to the cut process and the THC axis will then be available for configuration.
Warning! Installation, Setup and Calibration should only be performed by trained service personnel.
Extreme care should be used when installing this product.
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