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Actuator controls, Microprocessor-based actuator controls with comprehensive functions

AC

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.

Microprocessor-based actuator controls with comprehensive functions

Design features

  • Modular interface concept for remote control
  • Local controls with lockable selector switch, push buttons and indication lights
  • LCD for status monitoring and parametrisation support
  • Non-intrusive actuator setting and parametrisation of actuator controls
    (in combination with MWG magnetic limit and torque transmitter)
  • Separate mounting onto wall bracket
  • Motor control via reversing contactors, thyristors
  • Phase monitoring with automatic phase correction
  • External 24 V DC supply (option)

Service conditions

  • Wide temperature range
  • Highest enclosure protection
  • High quality corrosion protection

Interface and functional properties

  • Control inputs for different voltages (DC/AC)
  • Programmable, potential-free output contacts for status signalling
  • Analogue control (0/4 – 20 mA)
  • Programmable stepping mode (for running time extension)
  • Intermediate positions can be freely defined
  • Process controller (PID)
  • Fieldbus control (Profibus DP/DP-V2, Profinet, Modbus RTU, Modbus TCP, HART, Foundation Fieldbus, WirelessHART)
  • Fieldbus interface also available in component redundancy
  • Behaviour in case of emergencies and communication loss
    (programmable)
  • Limit and torque as analogue signals
    (in combination with MWG magnetic limit and torque transmitter)
  • Operation data logging
  • Bluetooth interface to notebook and Android tablet
  • Functional safety: In selected configurations, safe end position feedback up to SIL 2 is possible.

Interfaces

  • Electrical connection via AUMA plug/socket connector
    (terminals as alternative)
  • Cable entries in different versions
  • FOC connection for fieldbus interfaces

Specifications

Key information at a glance

Service conditions