The classification of elevator door operator

Elevator door operator, which is a responsible for the elevator hall car door opening and closing institution, when the elevator opened, closed signal, the elevator door operator through the built-in control system control to open the door motor, the motor torque into a certain direction of force, close or open the door. When the closing force of the door is greater than 150N, the door operator will automatically stop closing the door and reverse open the door to play a certain degree of closing protection.

The technology of door operator has experienced the development of mechanical door operator, frequency conversion door operator and permanent magnet synchronous door operator.

Frequency conversion operator

Ac asynchronous frequency conversion door operator is usually referred to as frequency conversion door operator for short. There are two kinds of motion control modes of elevator: speed switch control mode and encoder control mode. “Speed switch control method cannot detect the movement direction of the car door, position and speed, can only use position and speed open-loop control, lead to relatively poor control accuracy and the smoothness of movement process of the crane is not so good, so use more” encoder control mode “.

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