{"product_id":"honeywell-51202902-200-ram-charger-assembly","title":"Honeywell 51202902-200 RAM Charger Assembly","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51202902-200\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e51202902-200\u003c\/strong\u003e RAM Charger Assembly, operates as a dedicated hardware component for memory backup power provision to prevent program data loss during power outages within distributed control systems.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe base catalog designation \u003cstrong\u003e51202902-200\u003c\/strong\u003e represents the complete RAM charger assembly module, with numerical digits indicating the specific power delivery configuration and physical form factor designed for S8 C300 controller architectures. No arbitrary sub-variants are designated for this memory backup unit.\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\u003e51202902-200\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\u003e1.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.95 x 1.77 x 0.47 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eInput Voltage: 24 VDC; Output Voltage: 5 VDC; Output Current: 1 A\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 and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe RAM charger assembly maintains rigorous electrical separation between the primary 24 VDC industrial distribution bus and the internal 5 VDC memory backup circuits through integrated galvanic isolation barriers. While dedicated to controller volatile memory retention, the module architecture preserves signal integrity across adjacent control loops by suppressing transient voltage spikes and high-frequency noise from shared power rails. Channel isolation criteria prevent feedback loops into the S8 C300 controller backplane, ensuring stable execution during primary power supply transitions.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the RAM charger assembly support hot-swappable replacement under power?\u003c\/p\u003e\n\u003cp\u003eA: No, replacement requires de-energizing the corresponding power feed to prevent backplane bus disruption and protect internal capacitor charge circuits.\u003c\/p\u003e\n\u003cp\u003eQ: What is the maximum controller capacity supported by a single module?\u003c\/p\u003e\n\u003cp\u003eA: The assembly is engineered to provide consolidated backup power support for up to four S8 C300 controllers simultaneously.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module handle thermal dissipation during maximum operating temperature conditions?\u003c\/p\u003e\n\u003cp\u003eA: Natural convection cooling across the enclosure housing handles dissipation up to the maximum rating of 70 deg C without requiring forced air ventilation.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the RAM charger assembly securely onto standard DIN rails within the designated control cabinet panel, ensuring solid mechanical contact for proper grounding. Connect the incoming 24 VDC supply lines to the primary input terminals while observing polarity markings to prevent internal circuit damage. Route low-voltage output cabling separately from alternating current power conduits and variable frequency drive leads to maintain noise immunity across the backup power bus.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":48231883243710,"sku":"51202902-200","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-01_15-04-36_17080f65-7432-4a83-8e03-9619a587a216.png?v=1785404236","url":"https:\/\/www.autooiltech.com\/products\/honeywell-51202902-200-ram-charger-assembly","provider":"AutoOilTech Limited","version":"1.0","type":"link"}