Buerkert Werke Gmbh & Co. Kg

Markus Feinauer

Peter Krippner

Sebastian Frank

Simon Kastner

Dinko Begovic

A safety module for a process valve and a system comprising a safety module and a process valve are provided. The safety module comprises at least a first interface complementary to a first connection interface of a drive module of the process valve and a second interface complementary to a second connection interface of a process valve actuator of the process valve, such that the safety module can be retrofitted in the process valve. The safety module further comprises at least one safety valve and fluid lines provided for fluidically coupling the safety valve to the drive module and the process valve actuator of the process valve. The at least one safety valve of the safety module is configured for forced venting of the process valve in a safety case.

Safety module for a process valve and system

A circuit and a method of controlling a circuit is provided for an electronic control of an electromagnetic drive of an electromagnetic valve. The circuit provides a control signal for the electromagnetic drive which has a high level and a low level. The control signal comprises at least a first time interval having a first duty cycle, an optional second time interval having a second duty cycle, and a third time interval having a third duty cycle, the first, second and third duty cycles being less than one. The first duty cycle is greater than the second duty cycle and the second duty cycle is greater than the third duty cycle. The time length of the time intervals and the size of the duty cycles are configured such that the electromagnetic drive changes from a first operating state to a second operating state in the first time interval, optionally remains in the second operating state in the second time interval, and changes from the second operating state to the first operating state in the third time interval.

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Ingelfingen, Germany

Markus Feinauer