{"product_id":"allen-bradley-1769-crr1-right-to-right-bus-expansion-cable","title":"Allen-Bradley 1769-CRR1 Right-to-Right Bus Expansion Cable","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1769-CRR1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1769-CRR1\u003c\/strong\u003e Connection Cable, serves as the primary \u003cstrong\u003e1769-CRR1\u003c\/strong\u003e Expansion Cable utilized to execute high-speed backplane extension across Allen-Bradley CompactLogix and MicroLogix 1500 system platforms. Designed as a right bank-to-right bank expansion interconnect, this 30.5 cm physical link extends the internal parallel backplane communication bus across adjacent I\/O banks without signal degradation. It carries logic communication, system timing, and internal power distribution signals between separate 1769 chassis banks in expanded controller configurations.\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\u003e1769-CRR1\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\u003e0.35 kg (0.77 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eLength: 30.5 cm (12.0 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive (Backplane Bus Extension)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Type\u003c\/td\u003e\n\u003ctd\u003eRight bank-to-right bank expansion cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Altitude\u003c\/td\u003e\n\u003ctd\u003e2000 meters (6561 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Vibration\u003c\/td\u003e\n\u003ctd\u003e10 to 500 Hz, 5G (0.030 in max peak-to-peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Shock\u003c\/td\u003e\n\u003ctd\u003e30G panel mounted (20G DIN rail mounted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication \u0026amp; Deterministic Processing\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1769-CRR1 maintains deterministic backplane bus communication velocity across multi-bank CompactLogix layouts by providing a direct, low-latency parallel extension line. Backplane timing synchronization and firmware flash compatibility between host processors (such as 1769-L3x series) and remote I\/O banks remain uncompromised over the fixed 30.5 cm cable length. High-density I\/O channel scaling is achieved by allowing system architects to split expansion racks horizontally or vertically while adhering to strict backplane signal propagation limits and total power supply distance rating constraints.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1769-CRR1 expansion cable require external termination modules or software configuration?\u003c\/p\u003e\n\u003cp\u003eA: No. The 1769-CRR1 is a passive physical bus extension cable. Backplane signals are automatically routed upon connection, though end caps (1769-ECR or 1769-ECL) must still be installed on the open ends of the final I\/O banks to maintain proper backplane termination.\u003c\/p\u003e\n\u003cp\u003eQ: Can multiple 1769-CRR1 cables be connected in series to increase the distance between CompactLogix banks?\u003c\/p\u003e\n\u003cp\u003eA: No. Interconnecting multiple expansion cables in series alters backplane impedance and propagation delay limits, causing communication faults along the 1769 bus. Only one expansion cable may be used per bank junction within the maximum allowed system layout specification.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Power Isolation\u003c\/strong\u003e: Ensure all AC and DC main power supplies connected to all CompactLogix banks are completely powered down prior to attaching or disconnecting the 1769-CRR1 cable assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Orientation \u0026amp; Alignment\u003c\/strong\u003e: Align the right bank-to-right bank cable connectors carefully with the 1769 expansion bus ports. Avoid bending or forcing the pin connections to prevent damaging the high-density backplane contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Securing\u003c\/strong\u003e: Fully seat the cable connector cover into the bus interface port until the side locking latches snap into place. Secure the cable housing using the mounting screws to prevent pin fretting under high vibration conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Routing \u0026amp; Strain Relief\u003c\/strong\u003e: Maintain a natural bend radius for the 30.5 cm cable segment. Do not route the expansion cable in close proximity or parallel to high-voltage AC motor wires, VFD output lines, or inductive load cabling to prevent electromagnetic noise coupling into the logic bus.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52681846325528,"sku":"1769-CRR1","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1769-CRR1_Cocoai_3d20f0bb-e5aa-4b6d-a68a-e1b559d4c9ec.jpg?v=1789437825","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1769-crr1-right-to-right-bus-expansion-cable","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}