{"product_id":"foxboro-p0973cn-i-a-series-4-position-expansion-backplane","title":"Foxboro P0973CN I\/A Series 4-Position Expansion Backplane","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eP0973CN\u003c\/strong\u003e is a \u003cstrong\u003e4-position expansion backplane\u003c\/strong\u003e manufactured by \u003cstrong\u003eFoxboro (Invensys)\u003c\/strong\u003e for the \u003cstrong\u003eI\/A Series and Evo distributed control systems\u003c\/strong\u003e. This modular baseplate provides mechanical mounting, backplane communication, and power distribution for up to four I\/A Series modules including \u003cstrong\u003eFCP270\/FCP280 processors, FCM100E communication modules, FEM100E expansion modules, and standard FBMs\u003c\/strong\u003e. Its \u003cstrong\u003epassive backplane design\u003c\/strong\u003e enhances system reliability by eliminating active components in the interconnection path.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Foxboro I\/A Series \/ Evo\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePositions:\u003c\/strong\u003e 4 module slots\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Modular expansion baseplate \/ backplane\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Modules:\u003c\/strong\u003e FCP280, FDC280, FCP270, FCM100Et, FCM100E, FEM100E, FBI200, FBI100, standard FBMs, 100 Series FBMs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFieldbus Speed:\u003c\/strong\u003e 2 Mbps (standard modules) \/ 268 kbps (100 Series FBMs)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Connections:\u003c\/strong\u003e Primary and secondary 24 VDC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Vertical DIN rail mount (horizontal optional)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 8.5 × 9.25 × 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.40–1.60 lbs (0.635–0.73 kg)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -20°C to +60°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBackplane Type:\u003c\/strong\u003e Passive\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4-Position Modular Design:\u003c\/strong\u003e Supports fault-tolerant FCP270 pairs in two positions with remaining positions for FBMs or FEM100Es.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassive Backplane Architecture:\u003c\/strong\u003e No active electronics eliminates a common failure mode and extends mean time between failures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Power Entry:\u003c\/strong\u003e Primary and secondary 24 VDC connections support redundant power supply configurations for high-availability nodes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Generation Compatibility:\u003c\/strong\u003e Accepts FCP270, FCP280, FDC280, and legacy FBM modules, protecting investment during system upgrades.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKeyed Module Positions:\u003c\/strong\u003e Mechanical keying prevents incorrect module insertion, protecting pins and ensuring proper addressing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRedundant Bus Support:\u003c\/strong\u003e 2 Mbps HDLC redundant serial bus (Module Fieldbus) with A\/B shielded twisted-pair cabling up to 60 meters.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between P0973CN and standard baseplates?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong\u003eP0973CN\u003c\/strong\u003e is an \u003cstrong\u003eexpansion backplane\u003c\/strong\u003e designed to extend system capacity with 4 module positions. Standard baseplates are typically limited to single or dual-module configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I add modules to the P0973CN while the system is running?\u003c\/strong\u003e\u003cbr\u003eA\u0026gt; Hot-swappable module support depends on the specific module type and I\/A Series software revision. Consult the system manual for hot-insertion procedures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the backplane include a DIP switch for module identification?\u003c\/strong\u003e\u003cbr\u003eA\u0026gt; The P0973CN is available in variants \u003cstrong\u003ewith or without\u003c\/strong\u003e baseplate identification DIP switches. Verify your specific part number suffix for switch configuration.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMount the backplane on a \u003cstrong\u003e35 mm DIN rail\u003c\/strong\u003e in the control cabinet using the integrated mounting clips.\u003c\/li\u003e\n  \u003cli\u003eConnect \u003cstrong\u003e24 VDC primary power\u003c\/strong\u003e to the power terminals. For redundancy, connect a secondary 24 VDC supply.\u003c\/li\u003e\n  \u003cli\u003eInstall up to four \u003cstrong\u003eI\/A Series modules\u003c\/strong\u003e into the keyed slots, pressing firmly until the ejector levers latch.\u003c\/li\u003e\n  \u003cli\u003eConnect \u003cstrong\u003efieldbus cables\u003c\/strong\u003e between backplanes using Foxboro's standard shielded twisted-pair A\/B cabling.\u003c\/li\u003e\n  \u003cli\u003eRoute \u003cstrong\u003efiber optic splitter\/combiner\u003c\/strong\u003e mounting positions for redundant FCP270 pairs if applicable.\u003c\/li\u003e\n  \u003cli\u003eVerify all module LEDs indicate normal status via the I\/A Series operator interface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePosition Planning:\u003c\/strong\u003e The 4-position P0973CN supports two FCP270s (fault-tolerant pair) plus two FBMs\/FEM100Es, or four FBMs in non-redundant configurations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Orientation:\u003c\/strong\u003e Vertical mounting saves horizontal cabinet width. Horizontal mounting simplifies wiring in shallow enclosures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRedundancy Strategy:\u003c\/strong\u003e For fault-tolerant architectures, pair redundant FCP280\/FCP270 processors with redundant power supplies on dual P0973CN backplanes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Compatibility:\u003c\/strong\u003e Verify your planned modules (FCP, FCM, FBM) are supported by the P0973CN backplane revision before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBus Length:\u003c\/strong\u003e The 2 Mbps module fieldbus supports up to 60 meters total cable length. Plan node placement to stay within this limit.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":53987558686904,"sku":"P0973CN","price":124.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/P0973CN_2__1r270_1a624783-f5e5-429b-b778-7cbf9983e0b4.png?v=1787736787","url":"https:\/\/www.globalpetroparts.com\/products\/foxboro-p0973cn-i-a-series-4-position-expansion-backplane","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}