What does an elevator door controller do?

Elevator door controller is an electronic equipment specialized in controlling the running speed of elevator door operator machine,known as elevator door inverter or door drive.

The elevator door controller can make the door operator machine running efficiency,safety and comfortably. Specifically including:

Controlling the motor speed by changing the power supply frequency

Controlling the elevator door open and close.

Energy saving: Adjust the door motor speed according to the actual demand to reduce energy consumption.

Smoothness: Achieving the speed smooth mediation of the door machine to reduce vibration and noise.

Safety: Providing safety protection functions to prevent the door machine from losing control and accidents.

What are the mainly types of elevator door machine inverter including?

According to the different load motor and power, mainly including: 

AC asynchronous motor (variable frequency three-phase asynchronous motor)

Adoption of VVVF frequency conversion control technology (VVVF technology)

AC permanent magnet synchronous motor and door machine with AC permanent magnet synchronous motor can realize the direct drive of the elevator door

At the same time, in addition to the difference between synchronous and asynchronous, there is also a difference in the positioning method: there are encoder positioning and position switch positioning.

Troubleshooting and solutions for elevator door inverter

Case 1: Elevator door machine inverter can not start

Solution: Check whether the power supply is normal, if normal, check the parameter settings of motor and inverter.

Case 2: The running speed of elevator door machine inverter is not stable

Solution: Check whether the load is normal, if normal, check the parameter settings of motor and inverter.

Case 3: Door machine inverter overload alarm

Solution: Check whether the door machine is overloaded, such as normal check motor and inverter parameter settings