Patent ID: 8047501

Claim:
A control device for controlling the switching movement of a valve, wherein the control device ( 1 ) has a modular structure, and the valve ( 100 ) comprises at least one valve rod ( 101 a ; 101 a *)that, supports a closure member ( 101 ; 101 *) and is moved in translatory or rotative manner, the valve rod(s) ( 101 a ; 101 a *) is/are brought into two end positions, a closed (SS) and an open (OS) position by means of a valve actuator ( 105 ) acted upon by a pressure medium, the control device ( 1 ) comprises means ( 5 ) for controlling the pressure medium (D) for the valve actuator ( 105 ), as well as a position indicator ( 4 ) that detects the end positions of the valve rod ( 101 a ; 101 a *) with regard to a fixed reference system and supplies actual position indications relating thereto, and the control device ( 1 ) comprises a modular, internal control unit ( 2 ) that performs data exchange with an external control unit ( 3 ) in the surroundings of the valve ( 100 ) on the one hand and actuates means ( 5 ) for controlling the pressure medium (D) on the other hand, characterised in that the internal control unit ( 2 ) comprises a standardised operating voltage (U B ), and the means ( 5 ) for controlling operates with the standardised operating voltage (U B ); an adapting module (I; I*) is accommodated in the control device ( 1 ), which is connected to the internal control unit ( 2 ) through an internal interface (B), the respective signal structure of the internal control unit ( 2 ) and of the adapting module (I; I*) are equal at the internal interface (B); and the internal control unit ( 2 ) is supplied with voltage through the adapting module (I; I*).