The Flowserve Logix 520MD Valve Positioner stands as a paragon of innovation and reliability in the realm of industrial valve control. As a product of Flowserve, a globally recognized leader in fluid motion and control solutions, the Logix 520MD is engineered to meet the most exacting demands of modern industrial processes. It plays a pivotal role in ensuring the precise positioning of valves, which is crucial for optimizing process efficiency, maintaining product quality, and upholding safety standards across a wide spectrum of industries.
The Logix 520MD is designed to be highly versatile in terms of input signals. It accepts the industry-standard 4 - 20 mA DC signal, which is widely prevalent in industrial automation due to its simplicity and compatibility with a vast array of control systems. This includes Programmable Logic Controllers (PLCs), Distributed Control Systems (DCSs), and other process control equipment. The 4 - 20 mA signal serves as the primary means of conveying the control command to the positioner, dictating the desired valve position. Additionally, the positioner is equipped with advanced digital communication capabilities, specifically supporting the HART (Highway Addressable Remote Transducer) protocol. HART enables two - way communication between the Logix 520MD and a host system, allowing for remote configuration, calibration, and real - time diagnostic data retrieval. This digital communication feature is a significant advantage, especially in large - scale industrial plants where remote monitoring and control can enhance operational efficiency and reduce maintenance costs. The minimum operating current for the Logix 520MD is 3.6 mA, ensuring reliable operation even in scenarios with relatively low - power input signals.
Features
The positioner is engineered to drive a variety of pneumatic actuators, both linear and rotary, with remarkable precision. It generates a proportional output signal that is directly related to the input control signal. For pneumatic actuators, this output signal manifests as a precisely regulated air pressure. The output pressure range can be adjusted to suit the specific requirements of different actuators, making the Logix 520MD compatible with a wide range of valve types and sizes. This flexibility in output signal and actuator control is essential in industries where diverse valve - actuator combinations are employed. The response time of the Logix 520MD is optimized for rapid and accurate valve positioning. In industrial processes where split - second adjustments are necessary, such as in chemical reactions or power generation systems, the positioner can quickly translate the input signal into the appropriate output, minimizing any lag in the valve's movement. This fast response not only improves process control but also contributes to overall system stability.
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Product Overview
Accuracy is a core strength of the Flowserve Logix 520MD Valve Positioner. It is capable of achieving an impressively high level of precision in valve positioning, typically within a very small percentage of the full - scale travel. This means that the valve can be accurately positioned to the exact degree required by the process control system, reducing variability in the process. For example, in pharmaceutical manufacturing, where strict control over fluid flow rates is essential for product quality and safety, the high accuracy of the Logix 520MD ensures that the valves regulating the flow of raw materials and intermediate products are positioned with utmost precision. Repeatability is another key aspect of the positioner's performance. It can consistently achieve the same valve position for a given input signal over multiple cycles. This reliability is crucial in continuous - process industries, such as oil refining or paper production, where consistent valve operation is necessary to maintain a stable production output. The Logix 520MD's ability to provide accurate and repeatable positioning is attributed to its advanced control algorithms and high - quality internal components.
The Logix 520MD is designed to operate efficiently with minimal power consumption. It typically requires a 24 VDC power supply, which is a standard voltage in most industrial control systems. This power supply requirement makes it easy to integrate the positioner into existing industrial setups without the need for complex power conversion systems. The low power consumption of the Logix 520MD not only helps in reducing operational costs but also contributes to its overall energy - efficiency. In addition, the positioner is designed to be resilient to power fluctuations and transients. It can continue to operate smoothly even in environments where the power supply may experience brief interruptions or voltage spikes, ensuring continuous and reliable valve control.
Place of Origin |
Sweden |
Motor Type |
Servo |
Application |
Power Station, Building, Industrial Equipment, Electronic Equipment, CNC Machine |
Brand Name |
Flowserve |
Model Number |
520MD |
Warranty |
1year |
Customized support |
OEM, ODM |
Temperature of Medium |
High Temperature, Low Temperature, Medium Temperature |
Rated |
30V, 4-20mA |
Packing |
Individual Paper box |

Carton Boxes
KeRui (Weifang) Automation Equipment Co., Ltd.Specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply to specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.


1.Q: How long is the delivery?
-- Mostly within 10days
2.Q:Can I get a sample?
-- Sure, contact our sales please
3.Q:What is your MOQ?
-- 1pcs
4.Q: How about warranty time?
-- 12month
5.Q: How can I visit your factory?
-- Fly to Qingdao air port, it's our pleasure to pick you up.
6.Q:How do you control your quality ?
-- We have EPR system .we control from parts, process, testing, packing ,retesting.
Every Sensor will be tested two times before reach you, after that sport test for the third time. Make sure about the quantity.