Sensor THC torch height control system for plasma cutting

Country: USA · Model: Sensor THC

Sensor THC is an automatic plasma torch height control system for CNC shape cutting machines. A lifter with a 241 mm stroke and a 11.4 kg load capacity controls the height by arc voltage of 50–300 V in steps of 0.5 V. A maintained distance to the plate improves the cut angle and speed and reduces dross.

Arc voltage range: 50–300 V, step 0.5 V
Lifter stroke: 241 mm
Load capacity: 11.4 kg
Max speed: 15 200 mm/min

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Technical specifications

Arc voltage range	50–300 V, step 0.5 V
Lifter stroke	241 mm
Load capacity	11.4 kg
Max speed	15 200 mm/min
Communication	discrete, EtherCAT with HPR
Operating temperature	−10…+40 °C

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

The control logic is located in the CNC, so job settings are made in one place. Built-in cut charts pass the parameters to the plasma power source and the THC at the same time, and they can also be set by process codes in the part program. The lifter works with closed-loop servo control and the SoftMotion function, and the components of the servo loop are adjustable. The dimensions are 127 × 152 × 526.5 mm, the weight is 11.27 kg without the breakaway unit and torch holder, and the maximum speed is 15 200 mm/min. The motor is supplied by the machine manufacturer, with a 60 mm flange. Communication goes through discrete signals to the motor and I/O, and EtherCAT works with the HPR plasma system. The operating temperature is −10…+40 °C, the humidity up to 95%.

How to choose

The choice comes down to compatibility with the CNC, the motor and the breakaway unit. The magnetic breakaway unit is rated for 11.4 or 4.5 kg, torch holders come in 51, 44 and 35 mm, and a laser pointer is standard. For beveling, pipe cutting and waterjet cutting the manufacturer makes non-standard lifters.

Request a price and lead time

Sensor THC torch height control system for plasma cutting. We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

How does Sensor THC find the initial height?

By ohmic contact with the plate, and if a position error occurs, by the drive stopping. There is also a height-find skip and an initial height offset.

Is Sensor THC suitable for a water table?

Yes, the system suits downdraft tables and water tables.

Which cutting technologies does Sensor THC support?

It supports SureCut, namely True Hole, True Bevel and Rapid Part, which shortens the time between cuts.

What modes and functions are available during cutting?

Manual or fully automatic mode with automatic arc voltage setting, gas pre-purge, cut crossing detection and re-ignition on an arc transfer error.

Is there remote diagnostics?

Yes, the Remote Help function in the CNC works over the Internet.