{"id":74811,"date":"2026-09-05T17:42:37","date_gmt":"2026-09-05T12:12:37","guid":{"rendered":"https:\/\/stitchpartner.com\/?post_type=product&p=74811"},"modified":"2026-09-05T18:03:04","modified_gmt":"2026-09-05T12:33:04","slug":"gt-900d-speed-controller-pcb-overlock-machine","status":"publish","type":"product","link":"https:\/\/stitchpartner.com\/hi\/product\/gt-900d-speed-controller-pcb-overlock-machine\/","title":{"rendered":"GT-900D Speed Controller PCB for Overlock Machine"},"content":{"rendered":"

If your GT-900D industrial overlock machine<\/strong> has inconsistent foot-pedal speed control, this Speed Controller Foot Pedal PCB Module<\/strong> is designed as a replacement electronic control board. It uses the SUPU Pedal Potentiostat VER:1.25<\/strong> configuration to read pedal movement and provide variable speed control to the compatible direct-drive motor system.<\/p>\n

The PCB is intended for GT-900D, GT-700D and compatible direct-drive industrial overlock machines<\/strong> using the specified SUPU pedal potentiostat system. The supplied board is a PCB module only<\/strong>, not a complete foot pedal assembly.<\/p>\n

The competitor listing also positions the GT-900D speed controller as a replacement part for industrial overlock machines and describes its purpose as smoother, more precise speed regulation.<\/p>\n

What This Speed Controller PCB Does<\/h2>\n

The pedal PCB converts the movement of the sewing machine foot pedal into an electronic control signal for the motor drive. This allows the operator to start at a controlled speed, increase speed progressively and reduce speed by changing pedal pressure.<\/p>\n

A functional foot controller is important for controlled overlock sewing, especially when handling detailed sections or working at lower speeds. General SUPU foot-controller documentation likewise describes variable speed operation through pedal pressure.<\/p>\n

\u092a\u094d\u0930\u092e\u0941\u0916 \u0935\u093f\u0936\u0947\u0937\u0924\u093e\u0910\u0902<\/h3>\n
    \n
  • SUPU Pedal Potentiostat VER:1.25<\/strong> PCB configuration<\/li>\n
  • Integrated Hall-effect magnetic sensor<\/strong> for pedal position detection<\/li>\n
  • Onboard signal-processing circuitry<\/li>\n
  • Protective silicone\/resin coating over critical electronic areas<\/li>\n
  • Multi-pin header connection points<\/li>\n
  • Rigid PCB mounting base with pre-drilled mounting holes<\/li>\n
  • Suitable replacement component for compatible direct-drive overlock pedal systems<\/li>\n
  • Pack of 1 piece<\/strong><\/li>\n<\/ul>\n

    The PCB marking\/revision is specified as VER:1.25 (2019.1.2 \/ 2023.2)<\/strong>.<\/p>\n

    \u092e\u0936\u0940\u0928 \u0905\u0928\u0941\u0915\u0942\u0932\u0924\u093e<\/h2>\n
    \n
    \n\n\n\n\n\n\n\n\n\n
    \u092e\u0936\u0940\u0928 \u0915\u093e \u092a\u094d\u0930\u0915\u093e\u0930<\/th>\n\u0905\u0928\u0941\u0915\u0942\u0932<\/th>\n<\/tr>\n<\/thead>\n
    GT-900D Industrial Overlock Machine<\/td>\n\u0939\u093e\u0901<\/td>\n<\/tr>\n
    GT-700D Industrial Overlock Machine<\/td>\n\u0939\u093e\u0901<\/td>\n<\/tr>\n
    Compatible Direct-Drive Overlock Machine using SUPU VER:1.25 pedal PCB<\/td>\n\u0939\u093e\u0901<\/td>\n<\/tr>\n
    \u0938\u093f\u0902\u0917\u0932 \u0928\u0940\u0921\u0932 \u0932\u0949\u0915 \u0938\u094d\u091f\u093f\u091a \u092e\u0936\u0940\u0928<\/td>\n\u0928\u0939\u0940\u0902<\/td>\n<\/tr>\n
    TA1 \u091b\u093e\u0924\u093e \u0938\u093f\u0932\u093e\u0908 \u092e\u0936\u0940\u0928<\/td>\n\u0928\u0939\u0940\u0902<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

    \u092e\u0939\u0924\u094d\u0935\u092a\u0942\u0930\u094d\u0923:<\/strong> Compatibility depends on the pedal electronics and motor-control system. Please compare your existing PCB marking, connector arrangement and mounting layout before ordering.<\/p>\n

    If your existing board does not match the SUPU Pedal Potentiostat VER:1.25<\/strong> configuration, please verify compatibility before purchase.<\/p>\n

    Why Replace the Pedal Controller PCB?<\/h2>\n

    A damaged or malfunctioning pedal sensor board can affect how the machine responds to foot pressure. Symptoms may include irregular speed response, difficulty controlling low-speed operation or an inconsistent start\/stop response.<\/p>\n

    Replacing the PCB can restore the pedal’s electronic position-sensing function when the original board is faulty and the replacement matches the machine’s control system.<\/p>\n

    This is particularly useful for tailors, garment factories, overlock machine technicians and sewing-machine repair professionals<\/strong> maintaining direct-drive industrial equipment.<\/p>\n

    \u0938\u0930\u094d\u0935\u094b\u0924\u094d\u0924\u092e \u0909\u092a\u092f\u094b\u0917 \u0915\u0947 \u092e\u093e\u092e\u0932\u0947<\/h2>\n

    This electronic spare part is intended for industrial overlock machine speed control<\/strong>, rather than fabric-specific sewing.<\/p>\n

    The controller can be useful when the operator needs controlled machine speed for operations involving:<\/p>\n

      \n
    • Cotton garments<\/li>\n
    • Polyester garments<\/li>\n
    • Lightweight fabric<\/li>\n
    • Knitted materials<\/li>\n
    • \u0938\u093e\u092e\u093e\u0928\u094d\u092f \u0935\u0938\u094d\u0924\u094d\u0930 \u0913\u0935\u0930\u0932\u0949\u0915\u093f\u0902\u0917<\/li>\n
    • Detailed edge finishing<\/li>\n
    • Production sewing<\/li>\n<\/ul>\n

      The fabric itself does not determine PCB compatibility. The machine’s pedal and motor-control electronics do<\/strong>.<\/p>\n

      How To Install the PCB<\/h2>\n
        \n
      1. Switch off and unplug the machine<\/strong> before opening the pedal housing.<\/li>\n
      2. Remove the existing foot-pedal cover according to the machine’s service procedure.<\/li>\n
      3. Compare the old PCB with the replacement, including the PCB marking, connector arrangement and mounting holes.<\/li>\n
      4. Disconnect the existing board carefully.<\/li>\n
      5. Install the replacement PCB in the same orientation and mounting position.<\/li>\n
      6. Reconnect the wiring and terminals exactly as required by the original configuration.<\/li>\n
      7. Close the pedal housing securely.<\/li>\n
      8. Power on the machine and test pedal response gradually.<\/li>\n<\/ol>\n

        Electrical installation should be performed by a qualified sewing-machine technician when you are unsure about the wiring or control-board connections.<\/strong><\/p>\n

        \n

        3. FREQUENTLY ASKED QUESTIONS<\/h1>\n

        Is this a complete foot pedal?<\/h3>\n

        \u0928\u0939\u0940\u0902\u0964.<\/strong> This listing is for one Speed Controller Foot Pedal PCB Module<\/strong>. It is the electronic PCB component used inside the compatible pedal assembly, not a complete pedal housing or complete foot controller.<\/p>\n

        Is this PCB compatible with the GT-900D overlock machine?<\/h3>\n

        \u0939\u093e\u0901\u0964.<\/strong> It is specified for the GT-900D industrial overlock machine<\/strong> and uses the SUPU Pedal Potentiostat VER:1.25 configuration. The GT-900D is also listed commercially with a dedicated speed-controller replacement board.<\/p>\n

        Can I use this PCB with GT-700D?<\/h3>\n

        Yes, according to the supplied compatibility information.<\/strong> It is specified for GT-700D as well as GT-900D and compatible direct-drive overlock systems using the same SUPU pedal potentiostat configuration.<\/p>\n

        What does a sewing machine pedal speed-control PCB do?<\/h3>\n

        It detects foot-pedal movement and converts it into an electronic control signal for the motor system.<\/strong> This lets the operator vary sewing speed through pedal pressure rather than simply switching the motor between on and off.<\/p>\n

        Does this PCB work with every industrial overlock machine?<\/h3>\n

        \u0928\u0939\u0940\u0902\u0964.<\/strong> Compatibility depends on the machine’s motor-control system, pedal electronics, connectors and PCB configuration. Check your existing board for the SUPU Pedal Potentiostat VER:1.25<\/strong> marking before purchasing.<\/p>\n

        Is this suitable for a Single Needle Lock Stitch Machine?<\/h3>\n

        \u0928\u0939\u0940\u0902\u0964.<\/strong> This product is specified for compatible industrial overlock machines<\/strong>, including GT-900D and GT-700D. It should not be treated as a universal sewing-machine speed-control PCB.<\/p>","protected":false},"excerpt":{"rendered":"

        Speed Controller Foot Pedal PCB Module with SUPU Pedal Potentiostat VER:1.25 for GT-900D and GT-700D direct-drive industrial overlock machines. Designed for precise pedal speed sensing and smooth motor control. Pack of 1 piece.<\/p>","protected":false},"featured_media":75717,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_yoast_wpseo_focuskw":"GT-900D speed controller PCB","_yoast_wpseo_title":"GT-900D Speed Controller PCB for Overlock Machine %%sep%% %%sitename%%","_yoast_wpseo_metadesc":"Buy GT-900D speed controller PCB with SUPU Pedal Potentiostat VER:1.25 for compatible direct-drive overlock machines. 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