{"product_id":"honeywell-51401952-200-keyboard-interface-pcb","title":"Honeywell 51401952-200 Keyboard Interface PCB","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHoneywell 51401952-200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a dedicated keyboard interface printed circuit board engineered for Honeywell legacy operator workstations and classic console furniture. This module acts as the electronic bridge between membrane keyboards and the control system, ensuring stable operator input recognition in long-service industrial environments.\u003c\/p\u003e\n\u003cp\u003eDesigned specifically for Honeywell’s classic workstation architecture, the board supports multiple keyboard layouts and integrates power and communication over a single connection, simplifying cabinet wiring and long-term maintenance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFunctional Role\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e51401952-200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoperates as the core keyboard interface electronics within Honeywell classic furniture assemblies. It processes keystroke signals from membrane keyboards and transmits validated input data to compatible I\/O boards using serial communication.\u003c\/p\u003e\n\u003cp\u003eKey functional responsibilities include keyboard signal decoding, layout recognition, and robust communication handling for operator interaction.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKeyboard Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe interface PCB supports multiple legacy Honeywell membrane formats, allowing flexibility across different workstation generations.\u003c\/p\u003e\n\u003cp\u003eSupported keyboard layouts include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eABCDE membrane keyboards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQWERTY membrane keyboards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis dual-layout capability makes the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e51401952-200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esuitable for retrofit, refurbishment, and spare part replacement scenarios.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eElectrical and Communication Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e51401952-200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis powered directly from the host system and communicates through an industrial serial interface.\u003c\/p\u003e\n\u003cp\u003eElectrical and communication parameters include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eSupply voltage: 24 VDC nominal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTypical current draw: approximately 100 mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCommunication interface: RS-485 serial link\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtocol support: compatible with Modbus RTU–based communication architectures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMulti-drop capability: supports networked device configurations when used within compliant system designs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSystem Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis keyboard interface PCB is designed to work with Honeywell classic I\/O and furniture electronics.\u003c\/p\u003e\n\u003cp\u003eVerified compatibility includes:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eCE-compliant EPDGC I\/O boards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNon-CE EPDGP series boards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTypical mating boards: 51304854-200 and 51304854-300\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePower and data are transmitted through a single cable interface, reducing installation complexity and improving long-term reliability.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical Construction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e51401952-200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a compact, rigid PCB intended for enclosed console installation.\u003c\/p\u003e\n\u003cp\u003ePhysical characteristics:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eForm factor: square PCB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDimensions: 5 × 5 × 0.5 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 0.22 lb\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMounting: internal panel or console mounting within Honeywell furniture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEnvironmental Operating Limits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe module is rated for continuous operation in industrial control room conditions.\u003c\/p\u003e\n\u003cp\u003eEnvironmental specifications:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eOperating temperature range: –20 °C to +60 °C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStorage temperature range: –40 °C to +85 °C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRelative humidity: up to 95 percent, non-condensing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eCommon application scenarios include:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eHoneywell classic operator consoles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLegacy HMI workstations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eControl room furniture refurbishment projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpare part replacement for aging Honeywell systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLong-life automation platforms where keyboard input reliability is critical\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 51401952-200 a complete keyboard?\u003c\/strong\u003e\u003cbr\u003eA: No. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e51401952-200\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the keyboard interface PCB only. It requires a compatible Honeywell membrane keyboard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this board be used with modern Honeywell Experion systems?\u003c\/strong\u003e\u003cbr\u003eA: This module is intended for legacy and classic Honeywell platforms. Compatibility with modern Experion hardware is not supported.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the board support hot-swap installation?\u003c\/strong\u003e\u003cbr\u003eA: No. Power should be removed before installation or replacement to prevent electrical damage.\u003c\/p\u003e","brand":"HONEYWELL","offers":[{"title":"Default Title","offer_id":42912797950042,"sku":"51401952-200","price":209.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/51401952-2002.jpg?v=1770798230","url":"https:\/\/www.plcmasters.com\/fr\/products\/honeywell-51401952-200-keyboard-interface-pcb","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}