AME 655-1 / AME 685-1 / AME 658 SU-1 / AME 658 SD-1

The AME 655-1, 658 SU/SD-1 and 685-1 series of motor actuators are suitable in providing valve control to the demands of district heating/cooling, heating, ventilation, and air conditioning applications.

The AME 658 series of actuator provides safety function in either open or closing of the valve in the event of power loss. For the AME 655-1 and AME 685-1 this feature is not included.

The actuators can be wired in either a modulating or floating control dependent on the requirements of the electronic controller’s output.

The motor actuators AME 65x are assembled with the AB-QM series of pressure independent control valve for the sizes ranging from 5” (DN 125) to 6” (DN 150).

The motor actuators AME 685-1x are assembled with the AB-QM series of pressure independent control valve for the sizes ranging from 8” (DN 200) to 10” (DN 250).

This actuator offers advanced functionality for reliable and precise control in heating and cooling applications: - External reset button for quick manual reset - Automatic detection of Y signal - Selectable floating or modulating control modes - Galvanic insulation between Y, X, and output terminals 4 & 5 - Built‑in thermal and overload protection - High precision and rapid response in floating mode (0.01 s) - Last‑state position retention: if voltage or 4–20 mA control signal is lost during operation, the actuator remains in its last known position until a valid signal is restored