How does a DC24V switching actuator work?

• When the power + line is switched to the open input terminal and the power - line is switched to the close input terminal by a mechanical switch, the actuator drives the valve to open. When driven to the fully open position, the actuator stops driving and the motorized valve remains fully open.
• When the power + line is switched to the OFF input terminal and the power - line is switched to the ON input terminal by a mechanical switch, the actuator drives the valve closed. When driven to the fully closed position, the actuator stops driving and the motorized valve remains fully closed.
• If the power supply to the power line stops while the actuator is driving the valve, the actuator stops driving and the motorized valve maintains its current position.
• When you select an actuator configured with a heated dehumidifier, keep the power supply powered after driving the actuator to the fully open/closed position.

NOTE: The above circuit diagram shows the function of a switching actuator (motorized valve) in its simplest form. In practical applications, additional protection devices such as fuses and current limiters should also be considered.