{"product_id":"honeywell-rm7800l1046-7800-series-programming-relay-module","title":"Honeywell RM7800L1046 7800 Series Programming Relay Module","description":"\u003cp\u003eConfigured for automatic burner sequencing and safety timing execution in 7800 Series flame safeguard systems, the \u003cstrong\u003eHoneywell RM7800L1046\u003c\/strong\u003e ( \u003cstrong\u003eRM7800L1046\u003c\/strong\u003e Programming Relay Module) provides direct physical\/electrical execution.\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\u003eRM7800L1046\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\u003eStandard 7800 Series relay module mass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e127 x 127 x 133 mm (Q7800A) \/ 127 x 127 x 155 mm (Q7800B)\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\u003e10 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC (+10%, -15%), 50\/60 Hz (+\/-10%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSequence Timing\u003c\/td\u003e\n\u003ctd\u003ePre-ignition: Yes, Pilot Flame: 4 or 10 s, Main Flame: 10 s or Intermittent, Postpurge: 15 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubbase Compatibility\u003c\/td\u003e\n\u003ctd\u003eQ7800A or Q7800B universal wiring subbases\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Compatibility\u003c\/td\u003e\n\u003ctd\u003eR7847, R7848, R7849, R7851, R7852, R7861, R7886 plug-in modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMechanical Resistance\u003c\/td\u003e\n\u003ctd\u003e0.5G vibration tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Network Protocol Execution\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell RM7800L1046 relay module processes discrete input status signals from limit switches and flame amplifiers while maintaining channel-to-channel isolation across internal logic pathways. Integrating a five-function Run\/Test switch alongside nonvolatile memory registers, the unit continuously outputs diagnostic telemetry and lockout history through the interface port. Its optocoupled internal circuit topology prevents field voltage transients from corrupting critical program execution states during burner sequence transitions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is the prepurge timing established for the RM7800L1046 relay module? A: Prepurge timing is determined by the specific ST7800A Purge Timer Card inserted directly into the module.\u003c\/p\u003e\n\u003cp\u003eQ: What happens to operational history and fault logs during a complete power loss? A: Integrated nonvolatile memory retains all history files, sequence data, and lockout status records without requiring battery backup power.\u003c\/p\u003e\n\u003cp\u003eQ: Can the flame detection strategy be modified without replacing the base relay unit? A: Yes, the module accepts interchangeable plug-in flame amplifiers (R7847, R7848, R7849, R7851, R7852, R7861, R7886) to interface with various optical and rectification flame sensors.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation\u003c\/strong\u003e : Lock out and de-energize the main 120 VAC electrical line feeding the Q7800 subbase prior to installing or removing the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubbase Insertion\u003c\/strong\u003e : Align the rear terminal pins of the RM7800L1046 with the Q7800A or Q7800B universal subbase, pressing firmly until the lateral locking tabs click into position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimer \u0026amp; Amplifier Setup\u003c\/strong\u003e : Insert the required ST7800A purge timer card and matching R78xx flame amplifier into their respective front panel slots before applying power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Mitigation\u003c\/strong\u003e : Ensure the control enclosure provides a stable mounting substrate meeting the maximum 0.5G vibration threshold to prevent mechanical contact wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarth Grounding\u003c\/strong\u003e : Connect the subbase grounding terminal directly to the main panel earth rail to maintain noise suppression for the keyboard display module and diagnostic communication link.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45455224012915,"sku":"RM7800L1046","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/HONEYWELLTK-CCR014_81013c8b-7012-4e4b-ad58-f57b2651994a.png?v=1788747168","url":"https:\/\/www.dcssupplier.com\/ar\/products\/honeywell-rm7800l1046-7800-series-programming-relay-module","provider":"DcsSupplier Limited","version":"1.0","type":"link"}