SM93

Reversible rotary actuator

Application
The actuator SM93 is suitable to the motorization of mixing valves and ball valves up to DN32.

Operation
This is controlled through regulation systems which provide a pilot analog signal (Y) that can be 0…10, 2…10VDC or 0…20, 4…20mA and which is accepted in accordance with the programming performed on the card.
As a function of the pilot signal Y the actuator is positioned within the working range of the regulator which is 90°.
It’s available in output an analog signal U selectable between 0 and 10VDC which indicates the current position of the actuator and which is independent from the type of pilot signal.
At the first startup, or whenever it’s removed and restored the power, the actuator rotates clockwise until it reaches the limit in order to define the position of “0”.
The type of rotation is usually set when the operation is controlled: when increasing the pilot signal Y, it makes the actuator rotating counterclockwise (CCW): this can be reversed acting on the specific selection.