{"product_id":"allen-bradley-1769-crr3-compactlogix-expansion-cable","title":"Allen-Bradley 1769-CRR3 CompactLogix Expansion Cable","description":"\u003cp\u003eConfigured for multi-bank backplane extension in CompactLogix architectures, the \u003cstrong\u003eAllen-Bradley 1769-CRR3\u003c\/strong\u003e (\u003cstrong\u003e1769-CRR3\u003c\/strong\u003e Expansion Cable) provides direct physical\/electrical execution. It connects two 1769 Compact I\/O banks, routing 24 VDC power and high-speed backplane signals over a 3.28 ft bus interface. The cable enables right-to-right I\/O bank interconnection without requiring additional network adapter modules or external communications circuitry.\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-CRR3\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\u003e0.06 lbs (0.03 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCable Length: 3.28 ft (1.0 m)\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\u003e33.6 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e1.4 A at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e7.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Orientation\u003c\/td\u003e\n\u003ctd\u003eRight-to-Right Expansion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus \u0026amp; Deterministic I\/O Execution\u003c\/h3\u003e\n\u003cp\u003eThe 1769-CRR3 maintains deterministic backplane bus communication velocity across extended CompactLogix system configurations. Internal shielded conductors extend the parallel 1769 I\/O bus, passing timing signals, data words, and system reset lines between adjacent chassis banks. Built-in bus line termination and noise rejection layers maintain signal integrity and firmware compatibility across expansion banks without adding system data transfer latencies.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the physical orientation limit when using the 1769-CRR3 cable?\u003c\/p\u003e\n\u003cp\u003eA: The 1769-CRR3 is specifically keyed and wired for Right-to-Right expansion bank connection. It connects the right end of a primary 1769 chassis bank to the right end of an adjacent secondary expansion bank.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1769-CRR3 pass backplane power to secondary I\/O banks?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the cable carries up to 1.4 A at 24 VDC backplane current. However, power supply distance ratings and total bank current consumption must be calculated to determine if a secondary 1769 power supply is required on the expansion bank.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation:\u003c\/strong\u003e De-energize all 1769 chassis power supplies before connecting or disconnecting expansion cable connectors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Keying \u0026amp; Engagement:\u003c\/strong\u003e Align the right-angle connectors with the right-hand bus expansion ports on each 1769 bank and press firmly until the locking latches click into place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBend Radius Limits:\u003c\/strong\u003e Maintain a minimum bend radius of 4 inches (100 mm) along the cable body to protect internal differential data conductors from physical damage or shielding breakdown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise Separation:\u003c\/strong\u003e Route the expansion cable at least 6 inches away from high-voltage AC lines, drive outputs, and high-current inductive field wiring to prevent electromagnetic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Termination Verification:\u003c\/strong\u003e Ensure end-cap bus terminators are installed on the remaining open expansion ports at the physical ends of the CompactLogix system backplane.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52734362419480,"sku":"1769-CRR3","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1769-CRR3_Cocoai_652cb06a-fa5a-41ab-bd2a-822691bb18ea.jpg?v=1789870728","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1769-crr3-compactlogix-expansion-cable","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}