{"product_id":"allen-bradley-1771-wc-plc-5-wiring-arm","title":"Allen-Bradley 1771-WC PLC-5 Wiring Arm","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-WC\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-WC\u003c\/strong\u003e Wiring Arm, operates as a dedicated hardware component for TTL and low-current signal termination within Allen-Bradley PLC-5 control systems.\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-WC\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\u003e0.25 lbs (0.11 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\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eTTL, Low Current Signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Number of I\/O\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\u003e10 Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Plating\u003c\/td\u003e\n\u003ctd\u003eGold Plated\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\u003eConformal Coating\u003c\/td\u003e\n\u003ctd\u003eYes\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\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\u003eBackplane Bus \u0026amp; I\/O Isolation Execution\u003c\/h3\u003e\n\u003cp\u003eThe 1771-WC facilitates direct electrical connection between 1771 series TTL\/low-current I\/O modules and field devices, utilizing gold-plated contacts to prevent terminal degradation and maintain low-resistance signal paths. Its conformal coating provides environmental protection against atmospheric moisture and contaminants, ensuring signal integrity across high-density I\/O configurations connected to the PLC-5 backplane bus.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1771-WC wiring arm require an external supply voltage or backplane power?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1771-WC is a passive mechanical swing arm requiring no external power supply or current from the 1771 backplane bus.\u003c\/p\u003e\n\u003cp\u003eQ: What wire termination styles are supported by the 1771-WC terminal connections?\u003c\/p\u003e\n\u003cp\u003eA: Conductors up to AWG 14 can be connected either via direct wire clamping or using spade lugs attached to the terminal screws.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Alignment\u003c\/strong\u003e: Align the hinge slots at the base of the 1771-WC wiring arm with the lower pivot bar on the designated 1771 I\/O chassis slot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring\u003c\/strong\u003e: Fasten field conductors (up to AWG 14) or spade lugs under the 10 screw terminals, applying a torque of 7 to 9 lb-in to prevent over-tightening or loose contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Interlocking\u003c\/strong\u003e: Pivot the arm upward into the face of the installed I\/O module until the top latch engages firmly, securing the gold-plated contacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding \u0026amp; Grounding\u003c\/strong\u003e: Route low-voltage TTL signal drain wires to a low-impedance ground bus bar inside the panel to prevent noise pickup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrain Relief\u003c\/strong\u003e: Fasten the incoming wire bundle to the integrated cable tie slot on the bottom of the arm to prevent mechanical tension on individual screw terminals.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48770302148798,"sku":"1771-WC","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1771-WC_2b6bdcc0-eb7e-4a14-942d-e2b683849316.png?v=1787296482","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1771-wc-plc-5-wiring-arm","provider":"AutoOilTech Limited","version":"1.0","type":"link"}