{"product_id":"honeywell-900c73r-0000-42-redundant-i-o-scanner-module","title":"Honeywell 900C73R-0000-42 Redundant I\/O Scanner Module","description":"\u003ch2\u003eHoneywell 900C73R-0000-42 Redundant I\/O Scanner Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 900C73R-0000-42\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e900C73R\u003c\/strong\u003e redundant I\/O scanner, serves as a dedicated hardware component for high‑speed Ethernet‑based I\/O scanning within HC900 hybrid control systems.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e900C73R-0000-42\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eControlEdge HC900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDevice Type\u003c\/th\u003e\n\u003ctd\u003eRedundant I\/O Scanner Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003eHigh‑speed data collection and transmission between CPU and field I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFeatures\u003c\/th\u003e\n\u003ctd\u003eBuilt‑in self‑diagnostics, process variable monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSlot Type\u003c\/th\u003e\n\u003ctd\u003eHC900 rack slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Supply\u003c\/th\u003e\n\u003ctd\u003e24 VDC via HC900 backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temp\u003c\/th\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003ctd\u003eRack‑mounted, hot‑swappable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCommunication\u003c\/th\u003e\n\u003ctd\u003eEthernet I\/O scanning\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 \u0026amp; Redundancy\u003c\/h3\u003e\n\u003cp\u003eThe 900C73R‑0000‑42 integrates with HC900 systems where 4–20 mA HART loop signals are standard for process instrumentation. Redundant I\/O scanning ensures deterministic communication cycles, with automatic switchover between paired modules. Channel‑to‑channel isolation prevents interference across distributed I\/O networks, while built‑in diagnostics continuously validate communication health and process variable integrity.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 900C73R‑0000‑42 be hot‑swapped? A: Yes, the module supports hot‑swap replacement within HC900 racks, minimizing downtime.\u003c\/p\u003e\n\u003cp\u003eQ: How does redundancy operate? A: The module functions in redundant pairs, automatically switching to the standby unit upon fault detection.\u003c\/p\u003e\n\u003cp\u003eQ: What diagnostics are available? A: Continuous monitoring of network health, scan performance, and process variable integrity is provided via built‑in diagnostics.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the module in the designated HC900 rack slot with secure fasteners.\u003c\/li\u003e\n\u003cli\u003eEnsure proper grounding of shield connections to maintain communication integrity.\u003c\/li\u003e\n\u003cli\u003eRoute Ethernet cabling separately from power wiring to minimize EMI.\u003c\/li\u003e\n\u003cli\u003eObserve LED indicators during commissioning to confirm scanner health and redundancy status.\u003c\/li\u003e\n\u003cli\u003eMaintain clearance for airflow around the rack to prevent thermal buildup.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49491153617155,"sku":"900C73R-0000-42","price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/7995\/4179\/files\/e7c04d14dec526f23fb197f87b1b626f.jpg?v=1688462220","url":"https:\/\/www.runtoelectronic.com\/products\/honeywell-900c73r-0000-42-redundant-i-o-scanner-module","provider":"Runto Electric","version":"1.0","type":"link"}