{"product_id":"allen-bradley-1771-id-industrial-automation-module-heavy-duty","title":"Allen-Bradley 1771-ID Industrial Automation Module - Heavy-Duty","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1771-ID is a dual-rated, individually isolated input module from the 1771 product bulletin. Designed for demanding industrial environments, this module accepts six isolated 120VAC or 120VDC input channels, making it a versatile choice for monitoring discrete field devices such as limit switches, pushbuttons, selector switches, and float switches. With per-channel isolation, each input can operate at different voltage ratings, offering flexibility in mixed-voltage applications.\u003c\/p\u003e\u003cp\u003eAs part of the 1771 I\/O family, the 1771-ID mounts directly into any 1771 I\/O chassis, occupying a single slot. It ships with the 1771-WD field wiring arm, which simplifies modular wiring and replacement. The module's input filtering minimizes the effects of electrical noise and contact bounce, improving power quality and reducing downtime.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe following specifications are sourced directly from the manufacturer's data:\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1771-ID\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e1771 Product Bulletin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e6 inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Category\u003c\/td\u003e\n\u003ctd\u003e120 Volts AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e92–138 Volts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e92–138 Volts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Input Frequency\u003c\/td\u003e\n\u003ctd\u003e47–63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Current\u003c\/td\u003e\n\u003ctd\u003e8 mA @ 120V AC; 8 mA @ 120V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Delay (AC)\u003c\/td\u003e\n\u003ctd\u003e24 (±10) ms on\/off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal Delay (DC)\u003c\/td\u003e\n\u003ctd\u003e10 (±4) ms on; 20 (±9) ms off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e74 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC Off-State Current\u003c\/td\u003e\n\u003ctd\u003e1.7 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax DC Off-State Current\u003c\/td\u003e\n\u003ctd\u003e1.7 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e0.4–4.4 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e1.3–15.0 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKeying Positions\u003c\/td\u003e\n\u003ctd\u003eBetween 4 and 6; Between 28 and 30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Wiring Arm\u003c\/td\u003e\n\u003ctd\u003eCat. No. 1771-WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm Screw Torque\u003c\/td\u003e\n\u003ctd\u003e7–9 inch-pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndividual Channel Isolation:\u003c\/strong\u003e Each input is optically isolated, allowing mixed AC\/DC operation and preventing ground loop issues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Operating Range:\u003c\/strong\u003e Accepts 92–138V AC or DC, accommodating varying supply voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Filtering:\u003c\/strong\u003e Reduces false triggering from electrical noise and contact bounce, enhancing system reliability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Installation:\u003c\/strong\u003e Single-slot mounting in any 1771 I\/O chassis with included 1771-WD wiring arm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Dissipation:\u003c\/strong\u003e Only 0.4–4.4W, minimizing heat buildup in the enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe 1771-ID is ideal for isolated-circuit, multi-phase applications where reliable input sensing is critical. Common use cases include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Handling:\u003c\/strong\u003e Monitoring limit switches on conveyors and automated guided vehicles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess Control:\u003c\/strong\u003e Reading float switches in tanks and hoppers for level monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Tool Control:\u003c\/strong\u003e Detecting pushbutton and selector switch states on control panels.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThanks to its dual AC\/DC rating and per-channel isolation, the 1771-ID excels in retrofit projects where legacy wiring may mix voltage types.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eTo install the 1771-ID, follow these steps:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003eEnsure the 1771 I\/O chassis is powered down.\u003c\/li\u003e\n\u003cli\u003eInsert the module into a single slot, aligning the keying bands at positions 4 and 6, and 28 and 30.\u003c\/li\u003e\n\u003cli\u003eSecure the field wiring arm (1771-WD) to the module. Torque the wiring arm screws to 7–9 inch-pounds.\u003c\/li\u003e\n\u003cli\u003eWire input devices using 14 AWG stranded or solid copper wire with a maximum insulation thickness of 3\/64 inch.\u003c\/li\u003e\n\u003cli\u003eApply power and verify input status via the module's indicators.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eWhen planning the chassis backplane load, include the 74 mA backplane current of the 1771-ID in your power budget to prevent overloading.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe 1771-ID requires minimal routine maintenance. Periodically inspect wiring connections for tightness and signs of corrosion. Ensure the operating environment remains within specified limits: 0 to 60°C operating temperature, 5–95% relative humidity (non-condensing). The module's solid-state design and input filtering reduce wear, extending service life and minimizing unplanned downtime.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1771-ID is compatible with any 1771 I\/O chassis and works with Allen-Bradley PLC processors that support the 1771 I\/O architecture. It uses the 1771-WD field wiring arm for connections, and the module is keyed to prevent incorrect insertion. For new installations, verify that your chassis backplane can supply the required 74 mA per module.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing the 1771-ID, confirm your system's voltage requirements (AC or DC) and the number of isolated inputs needed. Ensure your chassis has available slots and sufficient backplane capacity. The module ships with the 1771-WD wiring arm, so no additional accessories are required for basic operation.\u003c\/p\u003e\u003cp\u003ePLC Source PRO offers genuine Allen-Bradley 1771-ID modules with fast, reliable shipping. We understand the critical nature of industrial spares, so every unit is tested and backed by our quality guarantee.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44438780248163,"sku":"1771-ID","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1771-A3B1_281_29_92a0ecc3-3fef-49a3-97bf-7d077a351cfe.jpg?v=1785850512","url":"https:\/\/www.plcsourcepro.com\/products\/allen-bradley-1771-id-industrial-automation-module-heavy-duty","provider":"PLC Source PRO","version":"1.0","type":"link"}