Why does the elevator installation monitoring need to be taken out to explain the installation method to you separately? Of course, the elevator installation monitoring has its particularity, in which interference is very important, and there is the problem of wiring. It must be wired reasonably.

The camera of the elevator monitors the installation position, which is generally illuminated from the upper left or upper right of the elevator door. The lens is generally 2.8mm. The wiring in the hoistway uses double insulating layer and double shielding coaxial cable. Pay special attention to interference, because the elevator security monitoring installation is most afraid of video interference. Therefore, double-sided inspection must be done before and during the operation of the elevator.

In the security monitoring wiring of elevator installation, the method of binding with other cables is mostly adopted. However, since the AC signals in other cables will leak outward through the transmission cable, when the video line is tied in parallel with it for a long distance, they are equivalent to a pair of "antennas", so the interference signal will be coupled with the video signal, resulting in video interference.

Therefore, in the wiring, the parallel binding length between the video cable and Alan at other points shall be shortened as far as possible. If conditions permit, the video cable can be fixed from the middle point of the elevator shaft and led back to the main control room from other channels, so as to avoid AC acoustic radiation coupling interference. For conditional projects, the control line and lighting cable used by the elevator can be shielded to reduce external radiation and avoid video interference.

The opening diameter of elevator camera must be well controlled. If it is small, it can be expanded. If it is large, it will be more troublesome!

There are also several points to note:
1、 The wire rod should use the elevator special line, because it will often move and fold, and one needs anti-interference, so we must use the special line. Others can be replaced and do not use it, otherwise it will cause trouble in future maintenance.

2、 The place of the cable must be handled properly.

3、 Try not to take power from the top machine room, otherwise it will be troublesome for maintenance later.

4、 The construction must pay attention to the personal safety of workers. After all, the elevator is working at height, and the installation of security monitoring is generally almost synchronized with the elevator commissioning height.