{"product_id":"1771-cfmk-industrial-automation-module-by-allen-bradley","title":"1771-CFMK Industrial Automation Module by Allen-Bradley","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1771-CFMK is a configurable flowmeter module engineered for precise rate calculation and high-speed totalizing in demanding industrial environments. As a single-slot I\/O module, the 1771-CFMK interfaces seamlessly between field devices and Allen-Bradley PLC processors, supporting the PLC-2, PLC-3, PLC-5, and PLC-5\/250 families. This module excels in applications requiring magnetic pickup flowmeters, 4 to 40 Volts DC pulse inputs, and proximity probes, making it a versatile choice for flow and turbine metering.\u003c\/p\u003e\u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 Inputs \/ 4 Outputs:\u003c\/strong\u003e The 1771-CFMK provides four configurable input channels and four output channels, offering flexible integration for flowmeter and gate input configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Works with Allen-Bradley PLC-2, PLC-3, PLC-5, and PLC-5\/250 processors, ensuring easy integration into existing control systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Operating Modes:\u003c\/strong\u003e Functions as a CFM module or as a drop-in replacement for QRC and QRD modules, simplifying upgrades and spare parts management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Input Handling:\u003c\/strong\u003e Each channel accepts magnetic pickup signals (50 mV to 200 VAC), 4-40 VDC pulses (open collector, TTL compatible), and proximity probe inputs compatible with Bently Nevada 3300 transducer systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficient Thermal Design:\u003c\/strong\u003e Peak thermal dissipation of 54.2 BTU\/hour (13 Watts) ensures reliable operation within a 0 to 60°C temperature range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1771-CFMK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFlowmeter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003ePLC-2, PLC-3, PLC-5, PLC-5\/250\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutputs\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Thermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e54.2 BTU\/hour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Heat Dissipation\u003c\/td\u003e\n\u003ctd\u003e13 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current Draw\u003c\/td\u003e\n\u003ctd\u003e1 Amp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe 1771-CFMK is ideally suited for industries such as automotive, food and beverage, power management, and oil and gas. In flow and turbine metering applications, the module's high-speed totalizing capability ensures accurate measurement of flow rates, while its compatibility with magnetic pickup and proximity probes makes it a reliable choice for rotating equipment monitoring. For example, in a natural gas pipeline, the 1771-CFMK can interface with turbine flowmeters to deliver precise totalization data to a PLC-5 processor, enabling efficient custody transfer calculations.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eInstalling the 1771-CFMK is straightforward. The module occupies a single slot in the chassis and connects directly to the backplane. Ensure that the chassis backplane can supply up to 1 Amp for the module. Before wiring, verify that input signals (magnetic pickup, DC pulse, or proximity probe) match the module's input specifications. Configure each channel as either a flowmeter input or a gate input using the module's configuration switches. Always power down the system before inserting or removing the module to prevent damage.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eRoutine maintenance for the 1771-CFMK is minimal. Periodically inspect the module for dust accumulation and ensure adequate airflow to maintain the operating temperature within 0 to 60°C. Check wiring connections for signs of corrosion or loosening. The module's efficient thermal design (max 13 W dissipation) reduces heat stress, contributing to long-term reliability. By maintaining a clean environment and monitoring input signal integrity, you can maximize the service life of the module.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1771-CFMK is designed for seamless integration with Allen-Bradley PLC-2, PLC-3, PLC-5, and PLC-5\/250 processors. It supports block-transfer programming, allowing efficient data exchange between the module and the processor. The module can operate as a CFM module or as a replacement for QRC and QRD modules, providing flexibility in system design and upgrade paths.\u003c\/p\u003e\u003ch2\u003eSelection \u0026amp; Purchasing Guide\u003c\/h2\u003e\u003cp\u003eWhen selecting the 1771-CFMK, confirm your processor compatibility and required input types. Verify that your application requires 4 inputs and 4 outputs. If you are replacing an existing QRC or QRD module, the 1771-CFMK offers a direct upgrade path. For reliable sourcing, consider PLC Source PRO for genuine Allen-Bradley parts and expert support.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44438748528739,"sku":"1771-CFMK","price":273.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1771-A3B1_281_29_6d5389d2-5dad-4b64-88b4-9659c824deb4.jpg?v=1785848049","url":"https:\/\/www.plcsourcepro.com\/ar\/products\/1771-cfmk-industrial-automation-module-by-allen-bradley","provider":"PLC Source PRO","version":"1.0","type":"link"}