{"product_id":"s7800a1001-7800-series-keyboard-display-module-honeywell","title":"S7800A1001 7800 Series Keyboard Display Module | Honeywell","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell S7800A1001\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eS7800A\u003c\/strong\u003e Keyboard Display Module, operates as a dedicated hardware component for diagnostic data readout and parameter configuration within Honeywell 7800 Series burner control platforms. Powered by a 13 VDC peak full-wave rectified supply from the burner control module, the unit receives dynamic status messages and fault history logs via local serial transmission. It translates internal control state registers into a 40-character English language display, providing real-time optical feedback on sequence timing, flame signal voltage, and system hold conditions.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eS7800A1001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.14 kg (0.30 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 7800 Series flush-mount housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e7 W \/ 2 VA (13 VDC peak full-wave rectified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Capacity\u003c\/td\u003e\n\u003ctd\u003e40 characters (2 lines x 20 characters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Language\u003c\/td\u003e\n\u003ctd\u003eEnglish\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplacement Model\u003c\/td\u003e\n\u003ctd\u003eS7800A2142\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol Coexistence \u0026amp; Cold Junction Compensation\u003c\/h3\u003e\n\u003cp\u003eThe S7800A1001 incorporates high-density CMOS logic circuits and optically isolated communication lines designed to operate in severe electrical noise environments. When deployed alongside process instrumentation utilizing 4-20 mA HART loop protocol signaling or cold junction compensation (CJC) thermocouple circuits, internal high-frequency filtering prevents display flicker and data corruption caused by adjacent electromagnetic fields. The display circuitry maintains steady-state current draw across the 13 VDC supply rail, shielding internal microprocessors from voltage transients generated by main burner ignition transformers.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the S7800A1001 be hot-plugged directly into an energized 7800 Series relay module?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports direct hot-plug insertion into the front card edge socket of an energized 7800 Series control module, as power and serial communication lines are current-limited at the main board connection interface.\u003c\/p\u003e\n\u003cp\u003eQ: What power source drives the 40-character LCD backlight and logic processor?\u003c\/p\u003e\n\u003cp\u003eA: The module derives its power directly from the host 7800 Series relay module via a 13 VDC peak full-wave rectified power bus, requiring no external secondary power supply connections.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eAlign the rear card edge plug of the module with the front receiving jack of the 7800 Series relay module or remote mounting bracket.\u003c\/li\u003e\n\u003cli\u003ePress the assembly straight into the socket until the side retaining clips snap securely into place to establish ground continuity.\u003c\/li\u003e\n\u003cli\u003eFor remote cabinet door mounting, ensure the interconnecting ribbon cable is routed away from high-voltage ignition wiring and motor starters.\u003c\/li\u003e\n\u003cli\u003eVerify that the ambient operating temperature surrounding the display panel does not exceed +60 deg C to preserve LCD liquid crystal contrast response.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53625295339829,"sku":"S7800A1001","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/S7800A1001.png?v=1790047403","url":"https:\/\/www.5gplc.com\/products\/s7800a1001-7800-series-keyboard-display-module-honeywell","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}