{"product_id":"allen-bradley-1771-cfm-configurable-flowmeter-module","title":"Allen-Bradley 1771-CFM Configurable Flowmeter Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-CFM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance, four-channel flow measurement interface designed for the Allen-Bradley PLC-5 platform. This module serves as a bridge between industrial flowmeters and the control system, offering precise totalization and frequency measurement. Engineered for versatility, it supports independent configuration of each channel to accommodate various meter types and operational requirements. The hardware is compatible with several 1771 universal I\/O chassis, ensuring seamless integration into existing legacy systems while providing the high-speed processing necessary for accurate flow monitoring.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNumber of Inputs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4 independent flowmeter channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Signal Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2 flowmeter inputs and 1 gate input per channel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Input Frequency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e100 kHz (120 kHz gate input overrange capability)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAccumulation Capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProgrammable totalizer from 0 to 9,999,999\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLogic Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5V to 30V DC (TTL compatible)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Impedance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5 kΩ ±30% resistive\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGate Input Specs:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDual ranges (5V to 12V and 12V to 30V DC); 22mA max current\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4 source outputs (1A per channel); 5V to 30V DC range\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSwitching Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTotalizer-triggered ON\/OFF in \u0026lt;100 µs; other modes \u0026lt;1 ms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSignal Conditioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eJumper-selectable high-speed or low-pass (\u0026lt;70 Hz) filtering\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGate Debouncing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSoftware-selectable ~1s delay for transition stability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChassis Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1771-A1B, A2B, A3B, A3B1, A4B (Series A\/B); 1771-AM1, AM2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProcessing Latency:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.3 ms to 5.0 ms module scan time; 5.5 ms BTW processing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Power Supply:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e24V DC output at 12mA for sensor excitation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackplane Power Consumption:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.8A max @ 5V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOperational Applications and Modes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-CFM\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis specifically designed for liquid and gas measurement applications where precise volume tracking is critical. It supports multiple operational modes:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTotalizer Mode:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIdeal for batching operations where the gate input starts and stops the accumulation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNon-resettable Totalizer:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUsed for lifetime tracking of fluid throughput.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency\/Rate Measurement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor real-time monitoring of flow velocity. The four onboard outputs can be mapped to any channel, allowing for hardware-level triggers when specific flow volumes are reached, effectively bypassing software scan latencies for critical shut-off valves.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":44095960350819,"sku":"1771-CFM","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/234.png?v=1775022604","url":"https:\/\/precisemodule.com\/products\/allen-bradley-1771-cfm-configurable-flowmeter-module","provider":"Precise Module Ltd.","version":"1.0","type":"link"}