{"product_id":"honeywell-900rsm-0101-redundant-switch-module-rsm","title":"Honeywell 900RSM-0101 Redundant Switch Module (RSM)","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n    \u003cp\u003eThe \u003cstrong\u003eHoneywell 900RSM-0101\u003c\/strong\u003e is a \u003cstrong\u003eRedundant Switch Module (RSM)\u003c\/strong\u003e designed for the \u003cstrong\u003eControlEdge HC900\u003c\/strong\u003e redundant controller rack. It manages seamless failover between the \u003cstrong\u003eLead and Reserve CPUs\u003c\/strong\u003e, providing real-time status indication, manual switchover capability, and key-switch mode control. The 900RSM-0101 ensures high availability in critical process control and safety applications by eliminating single points of failure in the controller architecture. It supports \u003cstrong\u003eInsertion\/Removal Under Power (IRUP)\u003c\/strong\u003e without inducing a controller failover.\u003c\/p\u003e\n\n    \u003ch3\u003eKey Features\u003c\/h3\u003e\n    \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eRedundancy management\u003c\/strong\u003e between Lead and Reserve CPUs\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eLead\/Reserve LED indicators\u003c\/strong\u003e for instant CPU status visibility\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eManual failover key switch\u003c\/strong\u003e — force switchover from Lead to Reserve\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMode selection key switch:\u003c\/strong\u003e RUN, PROGRAM, RUN\/PROG\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHot-swappable (IRUP)\u003c\/strong\u003e — may be replaced under power without inducing failover\u003c\/li\u003e\n        \u003cli\u003eC70R CPUs remain in last used mode during RSM replacement\u003c\/li\u003e\n        \u003cli\u003eOne RSM required \u003cstrong\u003eper redundant controller rack\u003c\/strong\u003e\n\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eClass 1, Division 2, Groups A,B,C,D, T6\u003c\/strong\u003e hazardous location rating\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n    \u003cul\u003e        \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 900RSM-0101\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Redundant Switch Module (RSM)\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e ControlEdge HC900\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Redundancy management, manual failover, mode control\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCPU Compatibility:\u003c\/strong\u003e C70R, C75 redundant CPUs\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eIndicators:\u003c\/strong\u003e Lead\/Reserve status LEDs\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eKey Switches:\u003c\/strong\u003e Mode (RUN \/ PROGRAM \/ RUN\/PROG) + Manual failover\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHot-Swap Support:\u003c\/strong\u003e IRUP — insertion\/removal under power supported\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFailover Behavior:\u003c\/strong\u003e Replacement does not induce controller failover\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eRack Requirement:\u003c\/strong\u003e One per redundant controller rack\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e \u003cstrong\u003e0°C to +60°C\u003c\/strong\u003e\n\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e −25°C to +70°C\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5% to 95% RH (non-condensing)\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approx. \u003cstrong\u003e0.5 kg\u003c\/strong\u003e (500 g)\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Standard HC900 module form factor\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eHazardous Location:\u003c\/strong\u003e Class 1, Div 2, Groups A,B,C,D, T6\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE, UL, CSA, TÜV\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch3\u003eTypical Applications\u003c\/h3\u003e\n    \u003cul\u003e        \u003cli\u003eRedundant controller architectures for high-availability process control\u003c\/li\u003e\n        \u003cli\u003eSafety instrumented systems (SIS) requiring no single point of failure\u003c\/li\u003e\n        \u003cli\u003eCritical batch and continuous process automation\u003c\/li\u003e\n        \u003cli\u003eOil \u0026amp; gas production and refining\u003c\/li\u003e\n        \u003cli\u003ePower generation and turbine control\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch3\u003eFAQ\u003c\/h3\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n        \u003cp\u003e\u003cstrong\u003eQ: What does the 900RSM-0101 do?\u003c\/strong\u003e\u003cbr\u003eA: It manages redundancy between the \u003cstrong\u003eLead and Reserve CPUs\u003c\/strong\u003e, provides status indicators, and allows manual failover via a key switch.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n        \u003cp\u003e\u003cstrong\u003eQ: Can I replace the RSM while the system is running?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eYes.\u003c\/strong\u003e The 900RSM-0101 supports \u003cstrong\u003eIRUP\u003c\/strong\u003e (Insertion\/Removal Under Power). Removing or replacing it \u003cstrong\u003edoes not induce a controller failover\u003c\/strong\u003e, and the C70R CPUs remain in their last used mode.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n        \u003cp\u003e\u003cstrong\u003eQ: How many RSMs are needed per system?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eOne RSM\u003c\/strong\u003e is installed in each redundant controller rack.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e\n        \u003cp\u003e\u003cstrong\u003eQ: What modes can be set with the key switch?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eRUN, PROGRAM, and RUN\/PROG\u003c\/strong\u003e. The switch also allows forcing a manual failover from Lead to Reserve CPU.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"faq-item\"\u003e        \u003cp\u003e\u003cstrong\u003eQ: Is this module required for non-redundant systems?\u003c\/strong\u003e\u003cbr\u003eA: \u003cstrong\u003eNo.\u003c\/strong\u003e The RSM is only used in redundant controller configurations with dual CPUs.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n    \u003col\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePower Planning:\u003c\/strong\u003e The RSM can be inserted or removed under power, but follow your plant's safety procedures.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSlot Placement:\u003c\/strong\u003e Install the 900RSM-0101 in the designated RSM slot in the redundant controller rack, typically positioned between the two CPUs.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eKey Switch Setup:\u003c\/strong\u003e Set the mode key switch to the desired operating mode (RUN, PROGRAM, or RUN\/PROG) before or during commissioning.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFailover Test:\u003c\/strong\u003e During commissioning, test manual failover using the key switch to verify Reserve CPU assumes control correctly.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eStatus Verification:\u003c\/strong\u003e Confirm Lead\/Reserve LEDs indicate the correct active and standby CPUs.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eReplacement Procedure:\u003c\/strong\u003e If replacing the RSM, simply remove the old module and insert the new one. The CPUs will maintain their last mode and control will not transfer.\u003c\/li\u003e\n    \u003c\/ol\u003e\n\n    \u003ch3\u003eSelection Tips\u003c\/h3\u003e\n    \u003cul\u003e\n        \u003cli\u003eSelect the \u003cstrong\u003e900RSM-0101\u003c\/strong\u003e for \u003cstrong\u003enewer HC900 redundant controller racks\u003c\/strong\u003e (check your rack part number compatibility).\u003c\/li\u003e        \u003cli\u003eFor \u003cstrong\u003elegacy redundant racks\u003c\/strong\u003e, verify whether the \u003cstrong\u003e900RSM-0001\u003c\/strong\u003e or \u003cstrong\u003e900RSM-0200\u003c\/strong\u003e is required instead.\u003c\/li\u003e\n        \u003cli\u003eEnsure your \u003cstrong\u003eCPU firmware\u003c\/strong\u003e supports the RSM revision before installation.\u003c\/li\u003e\n        \u003cli\u003eAlways pair with a \u003cstrong\u003eredundant CPU rack (900RR0-xxxx)\u003c\/strong\u003e and dual redundant CPUs (C70R\/C75).\u003c\/li\u003e\n        \u003cli\u003ePlan \u003cstrong\u003eoperator training\u003c\/strong\u003e on the manual failover key switch for emergency procedures.\u003c\/li\u003e\n    \u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53960063680696,"sku":"900RSM-0101","price":81.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/900RSM-0101_3.png?v=1787197500","url":"https:\/\/www.globalpetroparts.com\/products\/honeywell-900rsm-0101-redundant-switch-module-rsm","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}