{"product_id":"allen-bradley-1746-c9-a-slc-500-rack-interconnect-cable","title":"Allen-Bradley 1746-C9\/A SLC 500 Rack Interconnect Cable","description":"\u003ch1\u003eAllen-Bradley 1746-C9\/A SLC 500 Rack Interconnect Cable\u003c\/h1\u003e\n\u003cp\u003eConfigured for backplane-level chassis extension in SLC 500 modular systems, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-C9\/A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1746-C9\/A rack interconnect cable\u003c\/strong\u003e) provides direct physical\/electrical execution for parallel I\/O bus extension between a main SLC 500 chassis and one adjacent expansion chassis.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe 1746-C9\/A is a fixed-geometry interconnect assembly within the SLC 500 expansion cabling set. No functional segmentation or electrical variant structure is defined beyond revision suffix “\/A”. Signal routing and pin mapping are factory-defined for 50-pin parallel backplane transfer only.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\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\u003e1746-C9\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\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\u003e0.28 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCable length 0.9 m (3 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (no active consumption)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRack Interconnect Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003e50-pin (2x25) male connectors with latching system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion Capacity\u003c\/td\u003e\n\u003ctd\u003e1 local expansion chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Method\u003c\/td\u003e\n\u003ctd\u003eParallel backplane bus (I\/O + power distribution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eSLC 500 1746-series chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSLC 500 Backplane Expansion Signal Integrity Control\u003c\/h3\u003e\n\u003cp\u003eThe 1746-C9\/A implements direct parallel backplane signal extension across adjacent chassis frames using 50-pin differential routing architecture. Backplane bus continuity is maintained through fixed impedance cable geometry, with signal timing dependent on synchronous scan cycles of the SLC 500 CPU.\u003c\/p\u003e\n\u003cp\u003eThe expansion topology enforces single-drop configuration only, preventing multi-rack daisy chaining. Mechanical latch retention ensures stable connector seating under cabinet vibration profiles. Ground reference continuity is maintained through chassis bonding rather than independent shielding return paths.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1746-C9\/A support more than one expansion chassis?\u003cbr\u003eA: No. The cable is electrically defined for one main rack to one expansion rack only. Additional chassis require separate architectural configurations.\u003c\/p\u003e\n\u003cp\u003eQ: Is the cable suitable for remote I\/O placement beyond cabinet adjacency?\u003cbr\u003eA: No. Signal integrity and timing are limited to adjacent chassis within 0.9 m physical separation.\u003c\/p\u003e\n\u003cp\u003eQ: What happens if the cable is connected while power is applied?\u003cbr\u003eA: Hot insertion is not supported. Backplane pin mismatch under energized conditions may cause bus corruption or module fault states.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eSystem power must be removed prior to installation to prevent backplane pin arcing. Align 50-pin connectors using keyed orientation guides before applying latch locking force. Maintain chassis adjacency within specified cable length without mechanical strain on the connector housing.\u003c\/p\u003e\n\u003cp\u003eCable routing should avoid parallel alignment with high-voltage motor or inverter wiring to reduce induced noise coupling on backplane conductors. Ensure both chassis are bonded to the same protective earth reference point to maintain signal return stability across the interconnect path.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43498729668698,"sku":"1746-C9\/A","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1746-C91.jpg?v=1778468491","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1746-c9-a-slc-500-rack-interconnect-cable","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}