AC actuator controls are your perfect solution if the application requires self-adapting control functions, data logging, a configurable interface or if valve and actuator are to be integrated into a Plant Asset Management System due to advanced diagnostic functions.
AC actuator controls are equipped with a parallel interface for free configuration and/or interfaces to fieldbus systems as used within process automation.
The diagnostic functions comprise a time-stamped event report, torque characteristics logging, continuous recording of temperatures and vibration within the actuator and, furthermore, counting the number of starts and motor running times.
Further to the basic functions, AC actuator controls offer a number of options to meet special demands. These include torque bypass to unseat valves if tightly seated or functions for extending operating times to avoid water hammer within pipelines.
With the development of the AC 01.2, particular emphasis was laid on user-friendliness and the ease of integration of actuators into the DCS. The large graphic display is used to perform menu-controlled programming of the actuator controls, optionally using AUMA CDT via wireless Bluetooth connection. For fieldbus connections, AC programming can be performed from the control room.
Design features
Service conditions
Interface and functional properties
Interfaces
IP68
Enclosure protectionKS
Corrosion protection-30 °C – +70 °C
Ambient temperatureMany different fieldbus systems are available on the market. Certain preferences have evolved on a regional level or specifically to certain plant applications. Since AUMA actuators are implemented in all types of technical process plants around the globe, they are available with interfaces for the different established fieldbus systems within the process automation industry.
Overall, AUMA devices are available with digital and analogue inputs to connect additional sensors to the fieldbus.
HART makes use of the known 4 – 20 mA standard signal for analogue data transmission. HART communication is modulated as additional signal to the analogue signal. Advantages: The digital HART signal can be transmitted simultaneously to the digital signal. The existing 4 – 20 mA infrastructure is thus also available for digital communication. Consequently, this allows for reading additional parameters and diagnostic data from field devices.
HART is based on the host-field device principle. The optional multidrop HART topology essentially complies with the line structures of fieldbus systems. In most cases, the conventional 4 – 20 mA point-to-point communication is used.
SIMA² Master Station is AUMA’s performing platform for the control and supervision of actuators via standardised fieldbus systems. The system optimises communication between host and field level and caters for efficient processes within the installation.
Configuration, operation and asset management of actuators and other field devices are simplified. A large variety of redundancy options maximises plant availability. Comprehensive diagnostic functions ensure perfect installation overview.