Valve actuation controller promises efficient process safety

11 March 2014

A range of economical controllers, introduced by Festo, are said to provide precise positions for quarter turn process valve actuators.

In addition to its energy-efficient operation, further key features of the CMSX position controller are said to include its attractive price/performance ratio and its high-level of process safety, which is ensured through its analogue and digital feedback signals and definable positions. The end positions can be defined flexibly via freely configurable analogue signals. In the standard variant of the position controller, its microcontroller continuously displays these feedback signals.

In closed-loop mode, the controller continuously compares the set point signal with the actual position of the quarter turn actuator. Any deviations automatically trigger an error message and an emergency stop. If there should be a power-supply failure, the process valve can be brought to a previously specified safety position, therefore minimising process risks.

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