{"product_id":"c6-variable-speed-control-board-for-cnc-spindle-vfd-control","title":"C6 Variable Speed Control Board for CNC Spindle \/ VFD Control","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #222;\"\u003e\n\n  \u003ch2 style=\"font-size: 24px; margin-bottom: 10px;\"\u003eC6 Variable Speed Control Board\u003c\/h2\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    The \u003cstrong\u003eC6 Variable Speed Control Board\u003c\/strong\u003e allows your CNC control system to control spindle speed using \u003cstrong\u003estep and direction signals\u003c\/strong\u003e, similar to how an axis motor is controlled. The board converts the incoming step\/frequency signal into a \u003cstrong\u003e0–10VDC analog output\u003c\/strong\u003e, which is commonly used by VFDs and spindle drives for speed control.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    This is a useful board when you want your CNC software to control spindle speed automatically instead of manually adjusting speed at the VFD or motor controller. The C6 also includes onboard relays that can be used for spindle direction and drive enable\/disable functions, depending on your wiring setup.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background: #f6f6f6; border-left: 4px solid #333; padding: 15px 18px; margin: 22px 0;\"\u003e\n    \u003cstrong\u003eBest for:\u003c\/strong\u003e CNC routers, CNC mills, VFD spindle control, Mach-style spindle setups, AC motor speed control through a compatible inverter\/VFD, and compatible DC motor controllers that use a speed potentiometer.\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eWhy Choose the C6?\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConverts step\/frequency to 0–10V analog:\u003c\/strong\u003e Lets your CNC controller command spindle speed through a standard analog speed signal.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDesigned for VFD spindle control:\u003c\/strong\u003e Many VFDs accept 0–10VDC input for external speed control, making this board useful for CNC spindle automation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUses step and direction style control:\u003c\/strong\u003e Allows the spindle to be configured in software like an angular axis.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilt-in relays:\u003c\/strong\u003e Includes two onboard relays that can be used for clockwise\/counterclockwise direction control or start\/stop and direction control.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptoisolated output signals:\u003c\/strong\u003e Helps protect the CNC controller from electrical noise and ground issues from VFDs or motor drives.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRJ45 connector:\u003c\/strong\u003e Allows faster wiring with a standard RJ45 cable when used with compatible CNC4PC boards.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWorks with many CNC control setups:\u003c\/strong\u003e Can be used directly with CNC4PC products, parallel port setups, and other compatible CNC control products.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCan replace some speed potentiometers:\u003c\/strong\u003e In certain compatible DC motor controllers, the C6 can replace the manual potentiometer used for speed control.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eMain Features\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003eFrequency\/step input signal\u003c\/li\u003e\n    \u003cli\u003e0–10VDC analog speed output\u003c\/li\u003e\n    \u003cli\u003eDesigned for compatible VFD and spindle drive speed control\u003c\/li\u003e\n    \u003cli\u003eTwo onboard electromechanical relays\u003c\/li\u003e\n    \u003cli\u003eRelays can be used for CW\/CCW direction or start\/stop and direction control\u003c\/li\u003e\n    \u003cli\u003eOptoisolated analog, clockwise, and counterclockwise output signals\u003c\/li\u003e\n    \u003cli\u003eTTL +5VDC or +3.3VDC signal compatibility\u003c\/li\u003e\n    \u003cli\u003eRJ45 connector for compatible board-to-board wiring\u003c\/li\u003e\n    \u003cli\u003eFine-tuning potentiometer for adjusting the 0–10V analog output\u003c\/li\u003e\n    \u003cli\u003eCan be used with many compatible DC motor controllers by replacing the speed potentiometer circuit\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eHow It Works\u003c\/h3\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    Most VFDs and inverters control AC motor speed by changing output frequency. Many of these drives can accept an external \u003cstrong\u003e0–10VDC analog signal\u003c\/strong\u003e to control speed. For example, around 5V typically commands about 50% speed, while 10V commands full speed, depending on the VFD settings.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    The C6 takes the step\/frequency signal from your CNC control system and converts it into this 0–10VDC analog signal. This allows spindle speed to be commanded directly from your CNC software instead of adjusted manually.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\n  \u003cdiv style=\"overflow-x: auto; margin-bottom: 22px;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eSpecification\u003c\/th\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eAnalog Output\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e0–10VDC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eOn-State Input Voltage\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e2–5VDC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eMinimum On-State Input Current\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e16mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eMaximum Off-State Voltage\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e0.8V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eMaximum Operating Frequency\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e50kHz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eMinimum On-State Pulse Width\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e3µs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eSignal Type\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eActive High\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eExternal Power\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e12VDC @ 200mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eDimensions\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e105mm L × 75mm W × 22mm D\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eRelay Specifications\u003c\/h3\u003e\n\n  \u003cdiv style=\"overflow-x: auto; margin-bottom: 22px;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eRelay Rating\u003c\/th\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eMaximum Current\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eAC Load\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e7A @ 240VAC \/ 10A @ 125VAC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eDC Load\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e15A @ 24VDC \/ 10A @ 28VDC\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eRJ45 Pinout\u003c\/h3\u003e\n\n  \u003cdiv style=\"overflow-x: auto; margin-bottom: 22px;\"\u003e\n    \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 15px;\"\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eRJ45 Pin\u003c\/th\u003e\n        \u003cth style=\"text-align: left; border: 1px solid #ddd; padding: 10px; background: #f2f2f2;\"\u003eFunction\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e1\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eGND\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e2\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNot Used\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e3\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eRelay 1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e4\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eRelay 2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e5\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eStep\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e6\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNot Used\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e7\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNot Used\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003e8\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #ddd; padding: 10px;\"\u003eNot Used\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eCustomer-Friendly Explanation\u003c\/h3\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    The C6 is the board that helps your CNC controller communicate with a spindle drive or compatible motor controller. Your CNC control system sends a step\/frequency signal, and the C6 turns that into the 0–10V signal that many VFDs use for speed control.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    If your goal is to control spindle speed from your CNC software instead of manually turning a knob or adjusting the VFD, this board is built for that job.\n  \u003c\/p\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eCommon Uses\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003eVFD spindle speed control\u003c\/li\u003e\n    \u003cli\u003eCNC router spindle automation\u003c\/li\u003e\n    \u003cli\u003eCNC mill spindle control\u003c\/li\u003e\n    \u003cli\u003eStep\/direction spindle control setups\u003c\/li\u003e\n    \u003cli\u003eMach-style spindle output configuration\u003c\/li\u003e\n    \u003cli\u003eAC motor speed control through compatible VFDs\u003c\/li\u003e\n    \u003cli\u003eReplacing the speed potentiometer on compatible DC motor controllers\u003c\/li\u003e\n    \u003cli\u003eCNC control box upgrades and retrofits\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eOfficial Documentation, Setup Video \u0026amp; Wiring Downloads\u003c\/h3\u003e\n\n  \u003cdiv style=\"background: #f6f6f6; border-left: 4px solid #333; padding: 18px 20px; margin: 22px 0;\"\u003e\n    \u003cp style=\"font-size: 16px; margin: 0 0 16px 0;\"\u003e\n      Review these C6 setup resources before connecting the variable speed control board to your CNC controller, Ethernet SmoothStepper ESS, VFD, KBIC speed controller, FC250 controller, or compatible DC motor control system. These links help with Mach4 configuration, 0–10V analog output wiring, step\/frequency spindle setup, and C6 Rev. 6 documentation.\n    \u003c\/p\u003e\n\n    \u003cdiv style=\"display: grid; grid-template-columns: 1fr 1fr; gap: 10px;\"\u003e\n      \u003ca href=\"https:\/\/www.youtube.com\/watch?v=j-buGh1ZXkw\" target=\"_blank\" rel=\"noopener\" style=\"display:block;background:#111;color:#fff;text-decoration:none;font-weight:700;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        Watch Mach4 C6 + ESS Configuration Video\n      \u003c\/a\u003e\n\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/User_s_Manual_C6_Rev.6.6.pdf?v=1779236780\" target=\"_blank\" rel=\"noopener\" style=\"display:block;background:#fff;color:#111;text-decoration:none;font-weight:700;border:1px solid #111;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View C6 User's Manual Rev. 6.6\n      \u003c\/a\u003e\n\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/User_manual_C6_Rev6.2.pdf?v=1779236610\" target=\"_blank\" rel=\"noopener\" style=\"display:block;background:#fff;color:#111;text-decoration:none;font-weight:700;border:1px solid #111;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View C6 User Manual Rev. 6.2\n      \u003c\/a\u003e\n\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/Sample_C6_analog_output_wiring_using_KBIC_speed_controller.png?v=1779236450\" target=\"_blank\" rel=\"noopener\" style=\"display:block;background:#111;color:#fff;text-decoration:none;font-weight:700;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View KBIC Analog Output Wiring Sample\n      \u003c\/a\u003e\n\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/C6toFC250_110V.pdf?v=1779236534\" target=\"_blank\" rel=\"noopener\" style=\"display:block;background:#fff;color:#111;text-decoration:none;font-weight:700;border:1px solid #111;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View C6 to FC250 110V Wiring PDF\n      \u003c\/a\u003e\n\n      \u003ca href=\"https:\/\/cnc4pc2.s3.us-east-2.amazonaws.com\/files\/C2latheC6controlMods.txt\" target=\"_blank\" rel=\"noopener\" style=\"display:block;background:#fff;color:#111;text-decoration:none;font-weight:700;border:1px solid #111;border-radius:8px;padding:13px 16px;font-size:15px;line-height:20px;\"\u003e\n        View C2 Lathe C6 Control Mods Text File\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"margin-top: 18px; background: #fff; border: 1px solid #ddd; border-radius: 10px; padding: 14px;\"\u003e\n      \u003cp style=\"font-size: 14px; color: #333; margin: 0 0 10px 0;\"\u003e\n        \u003cstrong\u003eVisual wiring reference:\u003c\/strong\u003e The KBIC wiring sample shows an example of C6 analog output wiring with a KBIC speed controller.\n      \u003c\/p\u003e\n      \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/Sample_C6_analog_output_wiring_using_KBIC_speed_controller.png?v=1779236450\" target=\"_blank\" rel=\"noopener\"\u003e\n        \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/Sample_C6_analog_output_wiring_using_KBIC_speed_controller.png?v=1779236450\" alt=\"Sample C6 analog output wiring using KBIC speed controller for CNC spindle speed control\" style=\"max-width: 100%; height: auto; border: 1px solid #ddd; border-radius: 8px;\"\u003e\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n\n    \u003cp style=\"font-size: 13px; color: #555; margin: 14px 0 0 0;\"\u003e\n      Documentation may include C6 setup instructions, Mach4 and Ethernet SmoothStepper ESS configuration notes, KBIC analog output wiring, FC250 connection examples, C2 lathe control modifications, and Rev. 6 manual details. Always verify your CNC controller output, step\/frequency setup, VFD or motor controller requirements, wiring, power supply, and safety requirements before powering the system.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eImportant Compatibility Notes\u003c\/h3\u003e\n\n  \u003cul style=\"padding-left: 22px; margin-bottom: 22px;\"\u003e\n    \u003cli\u003eThis board is \u003cstrong\u003enot a VFD\u003c\/strong\u003e and is \u003cstrong\u003enot a motor driver\u003c\/strong\u003e.\u003c\/li\u003e\n    \u003cli\u003eIt converts a frequency\/step signal into a 0–10VDC analog speed signal.\u003c\/li\u003e\n    \u003cli\u003eYour VFD or motor controller must support external analog speed control.\u003c\/li\u003e\n    \u003cli\u003eThe C6 requires an external power supply.\u003c\/li\u003e\n    \u003cli\u003eA voltmeter is required for fine tuning the analog output during setup.\u003c\/li\u003e\n    \u003cli\u003eFor Mach-style setup, the spindle is typically configured like an angular axis using step and direction signals.\u003c\/li\u003e\n    \u003cli\u003eThe manual notes that the board requires a 25kHz input signal to deliver 10VDC output.\u003c\/li\u003e\n    \u003cli\u003eAlways read your VFD manual and verify all wiring before connecting this board to a spindle drive.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n\n  \u003ch3 style=\"font-size: 20px; margin-top: 28px;\"\u003eC6 Variable Speed Control Buying Guidance\u003c\/h3\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    Choose the C6 if your CNC control system needs step\/frequency-to-0–10V spindle speed control for a compatible VFD, inverter, or DC motor speed controller. It is especially useful for Mach-style control systems, Ethernet SmoothStepper ESS setups, and CNC control box retrofits where spindle speed should be commanded directly from CNC software.\n  \u003c\/p\u003e\n\n  \u003cp style=\"font-size: 16px; margin-bottom: 18px;\"\u003e\n    Before ordering, confirm that your controller can provide the required step\/frequency signal, your spindle drive or motor controller accepts an external 0–10V analog command, and your setup can be configured for external speed, run, and direction control. The C6 is the interface board; correct wiring, software configuration, analog output tuning, and drive parameter setup are still required.\n  \u003c\/p\u003e\n\n  \u003cdiv style=\"background: #fff8e5; border: 1px solid #e0c878; padding: 15px 18px; margin-top: 24px;\"\u003e\n    \u003cstrong\u003eNeed help with spindle speed control?\u003c\/strong\u003e\n    \u003cp style=\"margin: 8px 0 0 0;\"\u003e\n      If you are not sure whether the C6 will work with your CNC controller, VFD, or motor controller, contact us before ordering. We can help you check whether your setup supports step\/frequency input and 0–10V analog speed control.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BuildYourCNC","offers":[{"title":"Default Title","offer_id":47832201658542,"sku":null,"price":40.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/7516\/3822\/files\/C6_C6-VariableSpeedControlBoard.png?v=1778199116","url":"https:\/\/buildyourcnc.com\/products\/c6-variable-speed-control-board-for-cnc-spindle-vfd-control","provider":"BuildYourCNC","version":"1.0","type":"link"}