Description
Honeywell M9494F1003
Technical Specifications AC power supply; Analog control signal 0-10V DC; Spring return fail-safe mechanism; Rated torque; Adjustable mechanical end stops; Auxiliary feedback potentiometer; Protection class IP54.
Functional Features Proportional adjustment of air damper position; Built-in spring returns to preset safety position when power fails; Adjustable mechanical limit stops to restrict rotation range; Auxiliary position feedback signal output; Low noise motor operation; Overload protection for motor drive circuit.
Application Scenarios Building HVAC air handling unit damper control; Ventilation fire and smoke damper; Clean room air volume regulation; Commercial building air conditioning system.
Performance Parameters Operating ambient temperature -20℃ to +60℃; Storage temperature -40℃ to +85℃; Relative humidity 5% to 95%, no condensation; Positioning accuracy ±2% full stroke.
Material Composition Flame-retardant plastic outer housing; DC drive motor; Metal reduction gear set; Return spring assembly; Potentiometer feedback sensor; Plastic cable gland for wiring entry.
Structural Characteristics Compact rectangular actuator housing; Output shaft on side for coupling with damper shaft; Mechanical limit adjustment screws on housing surface; Side cable gland for power and control signal wiring; Internal gear chamber sealed to prevent dust ingress.
Working Principle When powered, motor drives reduction gear set to rotate output shaft according to analog setpoint signal. Feedback potentiometer sends actual shaft position signal back to control circuit to realize closed-loop position control. When power supply cuts off, preloaded spring drives output shaft back to predefined safety position automatically.
Installation Requirements Mount actuator directly on damper shaft with mounting bracket. Adjust mechanical end stops to match damper full open and full closed travel. Connect power and control signal wiring through cable gland. Calibrate zero and full span position after power on, test spring return fail-safe function.
Usage Notes Do not apply external mechanical torque to output shaft manually. Keep actuator housing away from high temperature air flow. Check gear and spring condition periodically. Tighten cable gland to maintain IP rating. Avoid corrosive gas environment.
