{"product_id":"1771-ife-allen-bradley-plc-5-analog-input-module-16-channel","title":"1771-IFE Allen-Bradley PLC-5 Analog Input Module (16-Channel)","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview and Analog Data Acquisition\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IFE (1771IFE)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-density, intelligent analog input module belonging to the legendary\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley PLC-5\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eseries. Designed for precision data acquisition in heavy industrial environments—such as oil refineries, wastewater treatment plants, and steel mills—the module provides up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e16 single-ended\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8 differential\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003einputs. It is engineered to convert continuous analog signals (voltage or current) into digital values that can be processed by the PLC-5 processor. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IFE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a cornerstone for monitoring critical process variables like pressure, flow, temperature, and level, offering a robust hardware solution that has maintained its reliability in the field for decades.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHardware Architecture and Signal Interfacing\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IFE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eutilizes a modular chassis-based design and occupies a single slot in the 1771 I\/O rack. It interfaces with the PLC backplane through block transfer programming, ensuring high-speed data updates without overloading the processor's discrete I\/O scan.\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConfigurable Input Ranges:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module is highly versatile, supporting a wide array of signal types including\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1 to 5 VDC, 0 to 5 VDC, 0 to 10 VDC, and -10 to +10 VDC\u003c\/strong\u003e, as well as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 to 20 mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecurrent loops (using external shunt resistors).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eA\/D Conversion:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a 12-bit Analog-to-Digital converter, providing a resolution of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4096 counts\u003c\/strong\u003e, which ensures high granularity for sensitive process control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Filtering:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes hardware-based low-pass filtering to suppress high-frequency noise and 50\/60 Hz electrical interference common in industrial motor control centers.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIsolation Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides optical isolation between the analog input circuitry and the backplane logic, protecting the PLC processor from external field transients and ground loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e1771-IFE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e16 Single-ended or 8 Differential\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12-bit (0 to 4095)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eVoltage Ranges\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 5V, 1 to 5V, 0 to 10V, +\/- 10V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Ranges\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 to 20 mA (With 249 Ohm resistor)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConversion Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSuccessive Approximation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e750 mA @ 5 VDC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 Celsius\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1500 VAC (Continuous)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003e1.5 kg\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eIntegrated Technical FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I configure the module for 4 to 20 mA current inputs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IFE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis natively a voltage-sensing module. To measure\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 to 20 mA\u003c\/strong\u003e, you must install a precision\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e249 Ohm shunt resistor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacross the input terminals and configure the software range for 1 to 5 VDC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between Single-Ended and Differential wiring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSingle-ended wiring (16 channels) uses a common ground for all inputs and is suitable for signals with a shared reference. Differential wiring (8 channels) uses two leads per signal to cancel out common-mode noise, making it the preferred choice for long cable runs in electrically noisy areas.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does \"Block Transfer\" (BTW\/BTR) affect module operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnlike discrete I\/O, analog data is too large for a single scan. You must use\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBlock Transfer Write (BTW)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto send configuration data (ranges, filters) to the module and\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBlock Transfer Read (BTR)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto pull the digitalized analog values into the PLC-5 data table.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering \u0026amp; Installation Protocols\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring Arm Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-WG\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewiring arm to allow for module replacement without disconnecting field wiring. Ensure that all terminal screws are tightened to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.9 Nm\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto prevent signal drift caused by loose connections.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding Strategy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAlways use twisted-pair shielded cable for analog signals. Connect the shield at the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ePLC-5 chassis ground\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eonly; do not ground the shield at the sensor end to avoid creating ground loops that can cause significant measurement offsets.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCalibration Cycle:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IFE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis factory calibrated, it is recommended to perform a field calibration check every 12 months using a high-precision signal generator to account for component aging and environmental drift.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering Advantages\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-IFE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eremains a staple in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elegacy migration and maintenance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estrategies. Its high-density 16-channel capacity allows for significant I\/O concentration, reducing the number of chassis slots required for large-scale monitoring. The module's diagnostic capabilities—including \"Out of Range\" bit detection—provide immediate feedback to the control logic, allowing for automated fail-safe routines in the event of a sensor failure or wire break, thereby enhancing overall plant safety and uptime.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695193190763,"sku":"Allen Bradley 1771-IFE","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1771-ife-analog-input-module-o5ymi2u0t0q_277bfeb9-0c72-4a07-bb27-cb016050914d.jpg?v=1766114709","url":"https:\/\/www.plcprotech.com\/products\/1771-ife-allen-bradley-plc-5-analog-input-module-16-channel","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}