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AUMA electric actuator is generally composed of a reducer, two-phase servo motor, position transmitter, etc., then, let's understand what AUMA electric actuator is composed of?

AUMA electric actuator servo motor

The servo motor can use the squirrel cage type two-phase AC and the servo drive motor, which has a large impact on the starting torque and sum. The stator is evenly designed and arranged with two stator windings with a 90° electrical Angle difference of the same number of turns and diametral lines. The phase separation capacitance makes the two different windings mutually exciting phase and control phase. The synthesis method generates the stator rotating magnetic field, and the stator rotating magnetic field generates rotor current in the cage rotor. This results in a direct starting torque.

1. The servo motor is equipped with lever-side magnetic brake, which is used to limit the influence of inertia and load reaction torque of the rotor and the output shaft of the reducer after the power failure, so that the output shaft of the reducer is accurately stopped in the corresponding position. The handle is installed behind the AUMA electric actuator cover. When the handle is rotated in the manual position, the hand wheel can be shaken for manual operation; Turn the handle in the automatic position to ensure braking in case of motor power failure.

2. Reducer

The reducer structure adopts gradual flat gear and planetary transmission. The transmission structure has the characteristics of small volume, low efficiency, low noise, long service life and large transmission ratio. The basic components of the lower tooth structure are composed of an inner gear, a planetary wheel, an eccentric sleeve and a coupling. The transmission principle is that the rotation of the eccentric sleeve makes the planetary wheel cooperate with the inner gear in the inner gear. Due to the small difference between the number of internal gears and the number of planetary wheels, when the eccentric sleeve rotates, the planetary wheel rotates backward, the rotation speed is very slow, and its rotation becomes the output shaft through the shaft and the coupling.

There are two stop gears on the frame, which can limit the output shaft to 90 ° Angle, ensuring that the regulating mechanism and the connecting mechanism are not damaged. The reducer is equipped with manual components for local manual operation. When operating, just pull out the handle and shake it, and then reset it after the operation is complete. However, it should be noted that when manually operated, the upper control signal should be disconnected from the actuator or operated after power failure.

Second, AUMA electric actuator position transmitter

The position transmitter can work normally when the power system voltage is 190 volts to 240 volts, and can output current, by analyzing the gear development to drive the limit CAM and conductive plastic potentiometer rotation, its load impedance from 0 to 2KΩ output valve position, indicating that the current change does not exceed the instrument accuracy, when the line is not limited, And in the valve position indicator head within 2KΩ, the accuracy is not affected.

1. Travel limitation: mainly composed of CAM and microswitch. There are 2-4 independently adjustable cams that can touch the microswitch separately. The terminal electrical limit can be adjusted in the 360° range. The other two (optional) can be used for program control or alarm purposes. When the actuator rotates, the camshaft of the electric limit is driven by a gear. When the camshaft drives the CAM to a predetermined position, the microswitch moves to complete tasks such as electric limiting or interlocking protection.

2. Position information sensor: If we use a high-precision, long-life conductive plastic potentiometer that can be used as a position sensing element, it is coaxial connected with the travel management control architecture. The general resistance value is 1KΩ, the power is 4W, the linear model accuracy can reach 0.2%, and the life can reach 50 million times. The resistance of the potentiometer changes, and the general enterprise can also do the position indication signal as an important position data feedback signal.

3. Current converter: The discrete actuator adopts a position sensor module or integrated amplifier circuit, which is composed of a power transformer, a DC voltage regulator and a constant current source. It is sealed with flame retardant epoxy resin, which is more resistant to oxidation than normal position. Corrosion resistance, vibration resistance and other properties are greatly improved. The adjustable constant current and constant voltage device is used as the power output, with better temperature and constant current performance, easy to zero and full, ii (0-10ma) and iii (4-20ma) universal. The carrying capacity is 750ω (4-20ma), 1kω (0-10ma).

The above is what the AUMA electric actuator consists of, if you need more information, please feel free to contact us! Our company has many years of experience and is always looking forward to your joining.