{"product_id":"honeywell-900c72r-0000-42-redundant-controller-processor-module-controledge-hc900","title":"Honeywell 900C72R-0000-42 Redundant Controller Processor Module | ControlEdge HC900","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 900C72R-0000-42\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e900C72R\u003c\/strong\u003e Redundant CPU Processor Module, operates as a dedicated hardware component for high-availability process control and real-time logic execution within ControlEdge HC900 architectures. Installed in a redundant controller rack setup, the module provides direct physical and electrical execution for bumpless primary-to-reserve CPU failover. It synchronizes algorithm processing, database states, and backplane communication networks over dual dedicated inter-processor links.\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\u003e900C72R-0000-42\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\u003e0.45 kg (450 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePowered via 24 VDC rack backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Type\u003c\/td\u003e\n\u003ctd\u003eRedundant Controller CPU (C70 Performance Class)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eControlEdge HC900 Redundant Architectures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Interfaces\u003c\/td\u003e\n\u003ctd\u003eDual Ethernet communication ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation \u0026amp; DCS Network Performance\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 900C72R-0000-42\u003c\/strong\u003e processor features internal galvanic isolation channels to shield central processing electronics from field-side voltage spikes and ground loop currents. Integrated backplane communication drivers exchange status words with local and remote I\/O modules, maintaining isolation between internal CPU registers and field instruments operating over the 4-20 mA HART loop protocol. Dedicated redundancy links ensure database updates are mirrored across parallel processors without introducing signal attenuation or noise.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the 900C72R-0000-42 execute failover when a primary controller fault occurs?\u003c\/p\u003e\n\u003cp\u003eA: Dual dedicated redundancy links continuously synchronize state memory between primary and backup CPUs, allowing the reserve 900C72R-0000-42 to assume complete execution control within a single scan cycle without process disruption.\u003c\/p\u003e\n\u003cp\u003eQ: Can a standby 900C72R-0000-42 CPU module be replaced without interrupting active process execution?\u003c\/p\u003e\n\u003cp\u003eA: Yes, Removal and Insertion Under Power (RIUP) is supported for the backup or standby CPU in a redundant 900RR0 rack, provided all electrostatic discharge (ESD) and safety isolation precautions are strictly followed.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInsert the 900C72R-0000-42 module into its assigned slot within a redundant HC900 rack frame, ensuring upper and lower mechanical latches engage fully with the backplane.\u003c\/li\u003e\n\u003cli\u003eConnect dedicated redundancy communication cables directly between the primary and secondary CPU modules prior to powering up the rack.\u003c\/li\u003e\n\u003cli\u003eEnsure a low-impedance ground conductor connects the rack frame to protective earth (PE) to enable signal shielding circuits.\u003c\/li\u003e\n\u003cli\u003eMaintain a minimum vertical clearance of 75 mm (3.0 inches) above and below the rack to maintain proper passive convective cooling.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53531669954869,"sku":"900C72R-0000-42","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/900C70-0460-00_72f78bcc-f405-48f8-9c73-22ad24b7b5bc.png?v=1789096751","url":"https:\/\/www.5gplc.com\/products\/honeywell-900c72r-0000-42-redundant-controller-processor-module-controledge-hc900","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}