{"product_id":"non-contact-capacitive-height-sensor-control-unit-for-cnc-plasma-and-oxy-fuel-cutters","title":"Non-Contact Capacitive Height Sensor Control Unit for CNC Plasma and Oxy Fuel Cutters","description":"\u003cp\u003eThe CAP-04 is a professional-grade, non-contact sensing solution engineered for high-demand CNC Plasma and Oxy-Fuel cutting environments. Unlike traditional Ohmic sensors that require a physical electrical circuit to be completed through the torch shield and the workpiece, the CAP-04 utilizes advanced capacitive field technology. This allows for precise height sensing on materials where traditional methods fail—such as heavily rusted, painted, or non-conductive coated metals.\u003c\/p\u003e\n\u003cp\u003eAdvanced Sensing Technology \u0026amp; Performance\u003cbr\u003eBy monitoring the capacitance between the sensing ring and the workplate, the unit detects surface proximity without ever touching the material. This true non-contact operation eliminates the \"touch-and-retract\" cycle, significantly reducing cycle times and preventing torch crashes on warped or flexible thin-gauge sheets. The unit allows for fine-tuned adjustments of both the External Height (Initial Sensing) and the Internal Gap Window. This \"window\" logic ensures the torch stays within a specific voltage\/height band for smoother Z-axis response and superior edge quality. Furthermore, the built-in anti-dive logic prevents the torch from diving during corners, lead-ins, or slowdown zones where arc voltage typically fluctuates, providing a stable height reference independent of the plasma arc.\u003c\/p\u003e\n\u003cp\u003eIndustrial Build \u0026amp; Safety Features\u003cbr\u003eHoused in a sealed, die-cast aluminum enclosure, the CAP-04 is built to withstand the \"black dust\" (iron oxide), sparks, and moisture common in industrial plasma shops with an IP65 and NEMA 4 rating. The dedicated ERROR output provides an automated safety net, instantly triggering a signal to your CNC controller if it detects a sensor disconnect, a short circuit from physical contact, or a general system fault. To assist the operator, a high-visibility 4-LED status array allows for troubleshooting at a glance, featuring dedicated indicators for UP and DOWN motion, TOUCH (indicating physical contact), and CABLE FAULT to signal a short or open circuit in the sensing lead.\u003c\/p\u003e\n\u003cp\u003eIntegration \u0026amp; Control Logic\u003cbr\u003eUnlike \"bang-bang\" controllers that only offer full-on\/full-off signals, the CAP-04 can provide Proportional PWM. This allows for a variable duty ratio based on the torch's distance from the target, resulting in a significantly faster and more fluid Z-axis response when paired with an H-Bridge-9 driver. The unit is designed for seamless integration using industrial-standard 24VDC input power and supports logic signals up to 24V for UP, DOWN, and ERROR outputs. For more sophisticated CNC logic, it features 0-10V connection points for analog feedback and utilizes robust, noise-shielded Ethernet-style (RJ45) connectors for the sensor head.\u003c\/p\u003e\n\u003cp\u003eTechnical Specifications \u0026amp; Compatibility\u003cbr\u003eThe system is compatible with a wide range of materials, including steel, stainless, and aluminum—even when rusted or painted. It operates on a 24VDC power supply within a rugged, die-cast aluminum housing and provides both isolated digital outputs and proportional PWM. The interface supports 0-10V analog and 24V logic signals, utilizing a replaceable high-temperature sensing ring as the primary sensing element. Designed for surface mounting or direct integration into CNC4PC interface kits, it is a practical solution for real-world plasma table installations.\u003c\/p\u003e","brand":"BuildYourCNC","offers":[{"title":"Default Title","offer_id":47701582545070,"sku":null,"price":426.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/CAP04_Non-ContactHeightSensorforPlasmaandOxyFuelCutter_8162beca-31f0-4aba-a41f-ba4bc3e5ab43.jpg?v=1781310014","url":"https:\/\/buildyuurcnc.com\/products\/non-contact-capacitive-height-sensor-control-unit-for-cnc-plasma-and-oxy-fuel-cutters","provider":"BuildYourCNC","version":"1.0","type":"link"}