{"product_id":"honeywell-rm7800l1087-control-modules","title":"Honeywell RM7800L1087 Control Modules","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell RM7800L1087 \u003c\/strong\u003eserves as the primary \u003cstrong\u003eRM7800L1087 \u003c\/strong\u003eRelay Module utilized to execute automatic burner sequencing and safety timing across Honeywell 7800 Series flame safeguard platforms.\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\u003eRM7800L1087\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\u003e2.80 lbs (approx. 1.27 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 7800 Series Module Footprint\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\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Support\u003c\/td\u003e\n\u003ctd\u003eKeyboard Display Module (KDM) Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterlock Sequence\u003c\/td\u003e\n\u003ctd\u003ePre-ignition interlock, High and Low fire switch tracking\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 RM7800L1087 relay module provides microcomputer-based sequencing, flame supervision, and interlock monitoring for critical burner automation logic. Internal hardware circuitry incorporates channel-to-channel isolation across input lines to prevent stray electrical noise from disrupting safety-critical signals. Real-time sequence state information, purge timing status, and diagnostic fault codes are generated continuously and transmitted directly to the front-mounted Keyboard Display Module (KDM) interface.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What operational response is triggered upon detection of an open safety interlock or loss of flame? A: The internal control logic executes an immediate safety shutdown and initiates a safety lockout state, halting fuel delivery.\u003c\/p\u003e\n\u003cp\u003eQ: What power line parameters are required for the RM7800L1087 relay module? A: The module requires an operating input supply of 120 VAC (+10\/-15%) at 50\/60 Hz with a maximum power draw of 10 W.\u003c\/p\u003e\n\u003cp\u003eQ: How are sequence timing and lockout status accessed by maintenance technicians? A: Operating status telemetry, timing countdowns, and historical diagnostic fault logs are accessed via the front-mounted Keyboard Display Module (KDM).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation\u003c\/strong\u003e : Disconnect and lock out the main 120 VAC power feed to the wiring subbase prior to inserting, removing, or servicing the module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubbase Mounting\u003c\/strong\u003e : Fasten the universal wiring subbase securely to the panel backplate to eliminate mechanical play and ensure chassis stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Socketing\u003c\/strong\u003e : Align the rear terminal header of the RM7800L1087 with the subbase receptacle and push firmly until the side locking mechanisms latch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Segregation\u003c\/strong\u003e : Route high-voltage ignition transformer lines in a separate grounded metallic conduit away from low-voltage interlock and flame sensor wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarth Grounding\u003c\/strong\u003e : Attach a dedicated heavy-gauge copper bonding conductor between the panel main ground bus bar and the wiring subbase ground terminal to mitigate EMI.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45455223849075,"sku":"RM7800L1087","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/RM7898A1000_48c41bc2-e1e0-42c3-a389-e3388ed7158e.png?v=1788747154","url":"https:\/\/www.dcssupplier.com\/products\/honeywell-rm7800l1087-control-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}