Dc Control Circuit In Passenger Elevator

Posted: 19th April 2019 by odson don in Allgemein

Passenger elevators are an indispensable means of transportation in modern society. However, many people know little about cold knowledge about passenger elevators. For example, the role of the DC control circuit of the passenger elevator. Now, the otse elevator manufacturer will explain the role of the DC control circuit in the passenger elevator.

The DC control circuit part is the main component of the passenger elevator electrical control system. Whether this part of the circuit can work normally plays an important role in the normal operation of the مصعد الركاب. The DC power supply of the electrical control system is powered by an isolated working transformer that reduces the 380V AC supply voltage to an AC voltage of 115 to 125V. This voltage is applied to the input of a single-phase bridge full-wave rectification circuit composed of diodes.

Since the diode has unidirectional conductivity, a DC voltage having a variation range of not more than 7% or less is obtained at the output of the rectifier circuit. If the grid voltage is too high or too low, if it does not meet the specified requirements, it can be solved by changing the input voltage value of the rectifier circuit. The automatic switch door control circuit of the passenger elevator is one of the main control links of the DC control circuit.

In the actual adjustment process, in order to improve the operating efficiency of the passenger elevator, not only the opening and closing speed of the door is required to be fast, but also the noise is small. In order to achieve this requirement, the initial speed of the switch door must be adjusted faster. When the door switch reaches a certain distance, the speed is lowered to reduce the impact of the door on the door frame when the switch is properly opened.