Comparison of Interference Resistance Performance: 4-20mA VS. 2-10V
In the application of electric actuators’ anti-interference performance, the 4-20mA analog signal significantly outperforms the 2-10V analog signal. Why is this the case? 2-10V Signal Analysis Anti-interference Diagram for 2-10V Signal (DCL Huayi Intelligent Control) As shown in the diagram above: When using 2-10V, due to the higher input resistance on the module (R=34K), the […]
Common Used Buses for Electric Actuators
An increasing number of industrial control systems are deploying field buses to control more sensors and actuators. As a key actuator in fluid control processes, electric actuators are commonly used in industrial applications. The most frequently used bus systems for electric actuators include Modbus, CAN, Profibus, DeviceNet, Foundation Fieldbus, HART, and Ethernet. Common Bus Systems […]
Quando escolher um atuador de controlo de processos?
Application Background of Process Control Actuators In many process control systems, it is necessary to achieve highly accurate and consistent control of the flow rate of liquids or gases through an automated control system (PLC/DCS). Due to the high precision required, such systems often need to make continuous and precise small adjustments to control valves […]
Ensaio de Interferências Electromagnéticas para Actuadores Eléctricos (EFT)
The Increasingly Harsh Electromagnetic Environment in Industrial Sites As industrial electrification and intelligence continue to advance, an increasing number of high-power electrical devices (such as kilowatt-level motors, frequency converters, and inverters) are being integrated into industrial process control systems. Consequently, the electromagnetic environment in industrial sites is becoming more complex. In such a challenging electromagnetic […]
Tipos comuns de válvulas e suas caraterísticas
Butterfly Valve Working Principle: A butterfly valve uses a disc to control the flow of fluids or gases. The disc is mounted on a shaft, and when the handle is turned, the disc rotates 90 degrees to allow or block the flow. Features: Simple structure, compact size, low flow resistance, commonly used in large flow […]
Como Funcionam os Actuadores com Funções Bus - Modbus, CAN, Ethernet, Profibus
When you install a DCL electric control valve with bus functionality on a pipeline, you can control a set of electric control valves through the bus (Modbus, CAN, Ethernet, Profibus) to achieve synchronized control of the valve cluster. The control system communicates with the actuator via a bus communication protocol, sending commands to control the […]
How the DC24V ON-OFF Type Actuator (Electric Valve) Works
When you install a DCL 24V ON-OFF type electric control valve on a pipeline, you can control it using a relay, ON-OFF control, or PLC (DCS), enabling the opening or shutting off of fluid flow. This guide explains how the DCL 24V ON-OFF type electric actuators function using relays, PLCs, or ON-OFF control for valve […]
How the AC220V ON-OFF Type Actuator (Electric Valve) Works
When you install a DCL AC220V ON-OFF type electric control valve on a pipeline, you can control it using a relay, ON-OFF control, or PLC (DCS), enabling the opening or shutting off of fluid flow. This guide explains how the DCL AC220V ON-OFF type electric actuators function using relays, PLCs, or ON-OFF control for valve […]
Tipos de actuadores e como escolher o mais adequado
Os actuadores podem ser classificados com base no seu método de acionamento nas seguintes categorias 1. Actuadores eléctricos Os actuadores eléctricos utilizam um motor elétrico como fonte de energia, convertendo a energia eléctrica em movimento mecânico para acionar a válvula. Vantagens: ✔ Velocidade ajustável✔ Alta precisão de posicionamento✔ Grande saída de torque Desvantagens: ✖ Efeitos térmicos do motor podem desencadear [...]
Como é que a humidade reduz a vida útil dos actuadores (válvulas eléctricas)?
A humidade é bem conhecida por causar danos nos componentes electrónicos. Uma das principais formas de a humidade reduzir o tempo de vida dos actuadores eléctricos é através de curto-circuitos por migração iónica. 1. O que é um curto-circuito por migração iónica? A migração iónica ocorre quando a humidade e os contaminantes numa placa de circuitos facilitam o movimento de iões entre condutores, levando a [...]
