Title: Siemens STA73-eng (1).pdf
10...2 V 0..100 % H1H2 5.5...10 V 0...100 %H2 2...10 V 0...100 %The movement and actual position of the actuator is indicated by the gray interior part.De-energized actuator • The actuator’s stem is extended • The 1)valve is closed.6 0 Z 4 8 8 4Actuator > 3 minutes with power • The valve stem is retracted. • The 1)valve is opened.