{"product_id":"allen-bradley-1771-iff-plc-5-analog-input-module","title":"Allen-Bradley 1771-IFF PLC-5 Analog Input Module","description":"\u003cdiv\u003e\n\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley \u003cstrong\u003e1771-IFF\u003c\/strong\u003e is a high-performance analog input module designed for the PLC-5 control system architecture. It bridges field analog signals and the processor data table using reliable block transfer programming. The \u003cstrong\u003e1771-IFF\u003c\/strong\u003e module features optoelectrical isolation to safeguard system circuits against severe electrical transients. Built-in input filtering actively suppresses environmental electrical noise to maintain signal integrity.\u003c\/p\u003e\n\u003cp\u003eWhen input communication encounters a disruption, the module executes a pre-configured default response safely. This predictable fault behavior limits the overall process impact and protects connected equipment. Engineers deploy the \u003cstrong\u003e1771-IFF\u003c\/strong\u003e across demanding industrial automation loops for precise variable monitoring.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature Category\u003c\/th\u003e\n\u003cth\u003eTechnical Parameter\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer \u0026amp; Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation, Allen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number \/ Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e1771-IFF\u003c\/strong\u003e (PLC-5 Series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannel Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8 Differential or 16 Single-Ended Selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eData Format \u0026amp; Resolution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNatural Binary or BCD Scaling to ±9999; 12 Bits + Sign\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage \u0026amp; Current Ranges\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0-5V DC, 1-5V DC, ±5V DC, ±10V DC; 0-20mA, 4-20mA, ±20mA, ±40mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUpdate Time \u0026amp; Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 ms (8 channels); 10 ms (16 channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower \u0026amp; Thermal Load\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e750 mA Backplane Current; 2.5W Max Power; 8.52 BTU\/hr Thermal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental \u0026amp; Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConformal Coated; Optoelectrical Isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Delays\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC Off: 24 ms; DC Off: 20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Placement\u003c\/strong\u003e: Insert the \u003cstrong\u003e1771-IFF\u003c\/strong\u003e into any single available I\/O slot within a standard 1771 chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Keying\u003c\/strong\u003e: Position keying bands between pins 10 and 12 on the lower connector and pins 24 and 26 on the upper connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Termination\u003c\/strong\u003e: Attach field wiring directly to the 1771-WG wiring arm to streamline installation and servicing tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Maintenance Convenience\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Removability\u003c\/strong\u003e: The 1771-WG wiring arm lets technicians replace the \u003cstrong\u003e1771-IFF\u003c\/strong\u003e module without disturbing field wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus Indicators\u003c\/strong\u003e: Front panel LEDs display a green \u003cstrong\u003eRUN\u003c\/strong\u003e light and a red \u003cstrong\u003eFAULT\u003c\/strong\u003e light for immediate diagnostic visibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Response\u003c\/strong\u003e: User-configured default states deploy automatically during communication dropouts to maintain process stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Compatibility\u003c\/strong\u003e: Fully compatible with Allen-Bradley PLC-5 programmable logic controller racks and local I\/O chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Architecture\u003c\/strong\u003e: Integrates seamlessly with standard 1771 system backplanes and block transfer programming environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulatory Compliance\u003c\/strong\u003e: Built to meet industrial safety and environmental standards through rugged conformal coating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Contents \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Contents\u003c\/strong\u003e: One Allen-Bradley \u003cstrong\u003e1771-IFF\u003c\/strong\u003e analog input module and standard installation documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Support\u003c\/strong\u003e: Backed by a comprehensive \u003cstrong\u003e12-month warranty\u003c\/strong\u003e covering manufacturing defects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogistics \u0026amp; Delivery\u003c\/strong\u003e: Fast dispatch within \u003cstrong\u003e24-48 hours\u003c\/strong\u003e via reliable carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Monitoring\u003c\/strong\u003e: Interfaces thermocouple or RTD signal conditioners across industrial heating zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Regulation\u003c\/strong\u003e: Collects analog feedback loops from pipeline pressure transmitters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevel Sensing\u003c\/strong\u003e: Monitors fluid heights inside large storage tanks and chemical vessels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Metering\u003c\/strong\u003e: Tracks liquid and gas flow rates within process manufacturing plants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Engineering Tip\u003c\/strong\u003e: Verify channel configuration jumpers match your sensor wiring type before powering up the \u003cstrong\u003e1771-IFF\u003c\/strong\u003e rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventative Practice\u003c\/strong\u003e: Inspect the 1771-WG wiring arm terminal screws periodically to prevent high-resistance connection faults caused by vibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does the 1771-IFF module require an external power supply?\u003c\/strong\u003e\u003cbr\u003eA: No external loop power supply is required for the module core operation, drawing 750 mA directly from the backplane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How many inputs can the 1771-IFF monitor simultaneously?\u003c\/strong\u003e\u003cbr\u003eA: It supports either 8 differential selectable inputs or 16 single-ended selectable inputs at any given time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What should I do if the red FAULT indicator lights up on the front panel?\u003c\/strong\u003e\u003cbr\u003eA: Check block transfer communication rungs in the PLC-5 program and verify that field input signals remain within specified voltage or current ranges.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013983854774,"sku":"1771-IFF","price":126.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1771-IFF_d5e465dd-7620-4930-81d4-5356d0be16ea.jpg?v=1789538084","url":"https:\/\/www.plcsparehub.com\/products\/allen-bradley-1771-iff-plc-5-analog-input-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}