Standarder for spændingssignaler til elektriske aktuatorer - GB/T 3369.2-2008/IEC 60381-2:1978

Gældende standarder for elektriske aktuatorspændingssignaler (1-5V, 2-10V, 0-5V, 0-10V): Analoge signaler til processtyringssystemer - Del 2: Direkte spændingssignaler (GB/T 3369.2-2008/IEC 60381-2:1978)IEC 60381-2-1978, IDT Forord GB/T 3369.2-2008/IEC 60381-2:1978 - Analoge signaler til processtyringssystemer - Del 2: Direkte spændingssignaler Standarden GB/T 3369 består af følgende to dele: [...]

Sammenligning af ydeevne for interferensmodstand: 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 […]

Almindeligt anvendte busser til elektriske aktuatorer

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 […]

EN15714-2 Klassificering af elektrisk aktuatorstyring (drift)

Klassificering af kontrolopgaver: Klasse A: ON-OFF-type (On/Off) Funktion: Aktuatoren skal drive ventilen gennem hele dens slaglængde fra helt åben til helt lukket (og omvendt). Typisk anvendelse: Applikationer, hvor ventiler enten er helt åbne eller helt lukkede. Klasse B: Finjustering/positionsjusteringstype Funktion: Aktuatoren flytter lejlighedsvis ventilen til [...]

Hvornår skal man vælge en processtyringsaktuator?

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 […]

Test af elektromagnetisk interferens for elektriske aktuatorer (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 […]

Almindelige typer af ventiler og deres funktioner

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 […]

Klassificering af kabinetbeskyttelse (UL, CSA, NEMA)

Beskyttelsesklasserne for kabinetter defineret af UL, CSA og NEMA er kategoriseret som følger. Selvom klassifikationerne generelt er ens, er der mindre forskelle i detaljerne, så det anbefales at henvise til de specifikke standarder for at få mere præcise oplysninger. Type Klassifikation Definition 1 Generelt Til indendørs brug, til beskyttelse af indkapslede komponenter [...]

Aktuatorens IP-beskyttelse mod støv og vand

IP-beskyttelsesklassificering DefinitionIP-klassificeringen (Ingress Protection) definerer beskyttelsesniveauet for et produkts indkapsling mod indtrængen af faste genstande (såsom værktøj, fingre, støv osv.) og indtrængen af vand (fra kondens, vask, nedsænkning osv.). De to cifre efter "IP" angiver beskyttelsesniveauerne for faste genstande og vandindtrængning. Det første [...]

Sådan fungerer aktuatorer med busfunktioner – 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 […]