{"product_id":"honeywell-rm7898a1018-control-relay-module","title":"Honeywell RM7898A1018 Control Relay Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell RM7898A1018\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRM7898A1018\u003c\/strong\u003e Burner Control Unit, operates as a dedicated hardware component for automatic burner sequencing and flame supervision within 7800 Series platforms. This relay module executes pre-ignition, valve proving system (VPS) logic, selectable pilot type control, and early spark termination routines over a 120 VAC supply line.\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\u003eRM7898A1018\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\u003eIndustrial Automation Standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.36 kg (3.00 lbs)\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 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e120 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003e7800 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePilot Flame Establishing Period\u003c\/td\u003e\n\u003ctd\u003e4 or 10 Seconds (Selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntegrated Features\u003c\/td\u003e\n\u003ctd\u003eVPS, Selectable Interlocks, Pre-ignition, Early Spark Termination\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation and Dynamic Protocol Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe module utilizes channel-to-channel isolation and structured bus communication parameters across its backplane interface layer. In process automation topologies, electrical isolation prevents common-mode interference from compromising readout accuracy during flame sequence transitions. The module incorporates internal signal filtering and cold junction compensation algorithms within the host burner control architecture to maintain real-time diagnostic reporting during supply voltage fluctuations or high-frequency ignition noise.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What input power source does the RM7898A1018 module require for standard operation?\u003c\/p\u003e\n\u003cp\u003eA: The relay module operates on a nominal line supply of 120 VAC at 50\/60 Hz.\u003c\/p\u003e\n\u003cp\u003eQ: What options are available for the Pilot Flame Establishing Period (PFEP)?\u003c\/p\u003e\n\u003cp\u003eA: The module supports field-selectable pilot flame establishing timing periods of either 4 seconds or 10 seconds.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eTurn off all line power to the burner management enclosure before inserting the RM7898A1018 into the subbase.\u003c\/li\u003e\n\u003cli\u003eEnsure the subbase terminal connections are torqued properly and inspect the backplane header pins prior to seating the module.\u003c\/li\u003e\n\u003cli\u003eKeep high-voltage ignition transformer leads isolated from low-voltage field sensor and interlock wiring to minimize electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003eVerify proper continuous equipment grounding to the enclosure chassis bus bar before restoring system supply voltage.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":48786789859518,"sku":"RM7898A1018","price":172.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/RM7898A1000_59cefadc-2da8-4794-bb09-f7f2314d7dce.png?v=1787716081","url":"https:\/\/www.autooiltech.com\/ar\/products\/honeywell-rm7898a1018-control-relay-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}