Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A valve comprises a tappet and a sensor for detecting an adjustment stroke of the tappet, in particular an inductive sensor, wherein the sensor comprises a signal transmitter which comprises a coil, of which the coil axis (S) is substantially in parallel with the axis (A) of the tappet.

Abstract: Provision is made of a device for indicating the position of a valve spindle of a valve. The device comprises a valve spindle which can be shifted between a first position and a second position, and a sensor module for detecting at least the end positions of the valve spindle. The device further comprises at least a first optical display element (58), preferably a first LED, for indicating the first position, and a second optical display element (60), preferably a second LED, for indicating the second position. A first end position indication (66) is assigned to the first display element (58) and a second end position indication (68) is assigned to the second display element (60).

Abstract: A valve comprises a tappet and a sensor for detecting an adjustment stroke of the tappet, in particular an inductive sensor, wherein the sensor comprises a signal transmitter which comprises a coil, of which the coil axis (S) is substantially in parallel with the axis (A) of the tappet.

Abstract: Provision is made of a device for indicating the position of a valve spindle of a valve. The device comprises a valve spindle which can be shifted between a first position and a second position, and a sensor module for detecting at least the end positions of the valve spindle. The device further comprises at least a first optical display element (58), preferably a first LED, for indicating the first position, and a second optical display element (60), preferably a second LED, for indicating the second position. A first end position indication (66) is assigned to the first display element (58) and a second end position indication (68) is assigned to the second display element (60).

Abstract: A modular checking system for fluidic control devices has a display and/or operating unit which includes an inductive interface. The display and/or operating unit is adapted to be detachably connected to a fluidic control device in such a relative position to the latter that the inductive interface is coupled to a corresponding interface of the control device. Encoded signals can be transmitted via the inductive interfaces, the signals containing both information and energy from the control device to the display and/or operating unit for operating the latter.