{"product_id":"allen-bradley-1771-wf-wiring-arms","title":"Allen-Bradley 1771-WF Wiring Arms","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-WF\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-WF\u003c\/strong\u003e Wiring Arm, operates as a dedicated hardware component for field signal termination and I\/O module interface wiring within Allen-Bradley PLC-5 chassis platforms.\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\u003e1771-WF\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\u003e0.56 lbs (0.26 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.5 x 12.4 x 6.3 inches\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 Component (0 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eWiring Arm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax I\/O Count\u003c\/td\u003e\n\u003ctd\u003e8 I\/O Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Terminals\u003c\/td\u003e\n\u003ctd\u003e18 Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Plating\u003c\/td\u003e\n\u003ctd\u003eGold Plating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Torque\u003c\/td\u003e\n\u003ctd\u003e7 to 9 lb-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRequired External Power\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConformal Coating\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical AC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e29 (+\/- 8) ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical DC Signal Delay (Off)\u003c\/td\u003e\n\u003ctd\u003e30 (+\/- 7) ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFirmware Flash Compatibility \u0026amp; Backplane Bus Execution\u003c\/h3\u003e\n\u003cp\u003eThe 1771-WF provides physical signal path routing between field wiring and 1771 I\/O modules, establishing direct connections through gold-plated contacts to ensure minimal interface resistance. Conformal coating on internal structures protects against corrosive ambient atmosphere exposure. Operating as a passive mechanical arm, the unit maintains direct bus pin alignment with backplane connectors without imposing backplane bus communication velocity overhead or requiring firmware flash compatibility updates.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1771-WF field wiring arm require an external power supply to process signals?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1771-WF is a passive wiring interface arm that operates without external power inputs or backplane current draw.\u003c\/p\u003e\n\u003cp\u003eQ: What torque setting should be applied when securing field conductors to the 1771-WF terminal screws?\u003c\/p\u003e\n\u003cp\u003eA: Terminal screws on the 1771-WF should be tightened to a torque specification of 7 to 9 lb-in.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Mount\u003c\/strong\u003e: Pivot the bottom notch of the 1771-WF wiring arm onto the lower pivot bar of the 1771 Universal I\/O chassis slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring\u003c\/strong\u003e: Strip conductor ends and clamp them under individual terminal screws using a torque of 7 to 9 lb-in. Ensure low contact resistance across all 18 gold-plated terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Engagement\u003c\/strong\u003e: Swing the arm upward against the front face of the installed 1771 I\/O module until the locking latch catches securely, establishing electrical contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Wire Grounding\u003c\/strong\u003e: Route field wire shields to dedicated cabinet ground bars to prevent electromagnetic noise coupling across analog or low-voltage control loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrain Relief\u003c\/strong\u003e: Secure the incoming wire harness to the lower cable tie anchor to eliminate mechanical tension on individual terminal screws.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48770301395134,"sku":"1771-WF","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1771-WF_2_45ca6051-0d45-4bc9-b6a5-74bc4a75c03b.jpg?v=1787296491","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1771-wf-wiring-arms","provider":"AutoOilTech Limited","version":"1.0","type":"link"}