Title: Siemens STA73-eng (1).pdf
The actuator stem extends and the small valve, V..P47.., is opened. The actuator stem retracts when de-energized and the small valve is closed by the own spring.STA63.. STA73/00 with DC 0…10 V moduleThe actuator stem retracts and the radiator valve is opened by the spring. The position of the stem is proportional to the DC 0…10 V positioning signal. The actuator stem extends when de-energized and the radiator valve is closed. The actuator deploys to the 50% stroke position if the positioning signal is lost when applying operating voltage. DC 0…10 V actuators support various operation modes, see also under DIP- Switch settingsSTP63.. STP73/00 with DC 0…10 V module