{"product_id":"allen-bradley-1771-wi-thermocouple-wiring-arm","title":"Allen-Bradley 1771-WI Thermocouple Wiring Arm","description":"\u003cp\u003eConfigured for high-density signal termination in Allen-Bradley 1771 I\/O chassis, the \u003cstrong\u003eAllen-Bradley 1771-WI\u003c\/strong\u003e (\u003cstrong\u003e1771-WI\u003c\/strong\u003e Wiring Arm) provides direct physical\/electrical execution. It establishes electrical connections between field thermocouple wiring and 1771-IXE thermocouple input modules across 18 dedicated screw terminal points without disturbing backplane wiring during module replacement.\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-WI\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.26 lbs (0.12 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 I\/O Wiring Arm Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard Industrial Operating Range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive Component \/ Zero Idle Draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Count\u003c\/td\u003e\n\u003ctd\u003e18 Screw Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Module\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley 1771-IXE Thermocouple Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Compatibility\u003c\/td\u003e\n\u003ctd\u003eThermocouple extension wire \/ copper signal wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eDirect I\/O Chassis Pivot Assembly Snap-In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Integrity and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe wiring arm maintains permanent panel wiring connections when inserting or removing adjacent thermocouple cards, scaling I\/O density without disturbing internal backplane bus communication velocity. Cold junction compensation (CJC) sensors embedded within the assembly preserve signal accuracy across all 18 terminal channels, preventing millivolt signal drift and shielding low-level sensor inputs from high-frequency electromagnetic interference within control enclosures.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1771-WI allow replacing a 1771-IXE module while field power is applied?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the wiring arm swings outward on its pivot pins to disengage from the front edge connector of the 1771-IXE module, enabling hot-swapping or card replacement without disconnecting individual field wires.\u003c\/p\u003e\n\u003cp\u003eQ: What type of wiring connections are supported on the 1771-WI arm?\u003c\/p\u003e\n\u003cp\u003eA: The arm features 18 heavy-duty screw terminals designed to clamp spade lugs or stripped solid\/stranded thermocouple extension wires directly.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eAlign the upper and lower pivot pins of the 1771-WI wiring arm with the mounting slots on the 1771 I\/O chassis base.\u003c\/li\u003e\n\u003cli\u003eStrip field thermocouple wire ends carefully to avoid nicking conductors, or terminate with insulated fork connectors.\u003c\/li\u003e\n\u003cli\u003eWire field thermocouple pairs to designated terminal pairs on the 1771-WI, maintaining correct positive and negative polarity alignment per thermocouple type.\u003c\/li\u003e\n\u003cli\u003eTighten terminal screws firmly to ensure low-resistance contacts and minimize unwanted thermal EMF at junction points.\u003c\/li\u003e\n\u003cli\u003eSwing the wiring arm inward until the latch mechanism locks securely against the 1771-IXE module front housing.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52693177401624,"sku":"1771-WI","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1771-WI1_Cocoai_2eedc7ad-11bb-4baa-aa71-b97cc81aedba.jpg?v=1789612072","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1771-wi-thermocouple-wiring-arm","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}