Fengy - 20+ years wire manufacturing experience,OEM/ODM cables and wiring harnesses.
When entering the elevator industry in the early 1990s, the elevator follower cables were round cables as shown below. With the development of computer technology, the application of serial communication and the requirements for elevator cables have also changed.
So what is the difference between a round cable and a flat cable? It is really not easy for people who engage in elevators to explain it.
First of all, you must understand the law of electromagnetic induction. To understand serial communication, you will know that it is not known. The law of electromagnetic induction: no matter under what circumstances, as long as the magnetic flux passing through the loop changes, there will be current in the loop, if there is voltage at both ends of the loop open loop. This is the theoretical basis for the generator principle and interference.
Flat cable
In the early elevators, relay control or parallel communication elevators, the signals were mostly high-voltage anti-interference ability. After the implementation of serial communication, the anti-interference problem was mentioned on the agenda.