We use a network cable to wire the electric lock to the controller, what is the problem? I heard that if the network cable has been used for a long time, there will be problems?
The section of wire from the electric lock to the controller in the access control construction looks very ordinary, if it is not standardized, it will easily cause failures that are difficult to find the cause, this must be paid attention to!
Due to the relatively large operating current of the electric lock (compared to other devices of the access control system, such as the controller card reader), the electric lock is at a certain distance from the controller, and the voltage drop on the line will be relatively large. If the voltage drop is too large, the electric lock will sometimes be able to move, and sometimes not. Magnetic locks sometimes have insufficient suction power. Shows that the door switch is abnormal. It may even grab current resources with the controller, making the controller insufficient power supply, restarting or even crashing.
Some engineers are eager to make wiring convenient for a while, or convenient to purchase, and use network cables to wire the electric lock to the controller, which is very easy to cause failure, although there seems to be no problem when debugging, after a period of time, problems will often occur.
For the cable from the electric lock to the controller, if the cable length is less than 50 meters, it is required to use a two-core power cable with a cross-sectional area of 1.0 square millimeter, without shielding, if it exceeds 50 meters, please double cloth and add a two-core power cord to supply power in parallel. If the cable length is greater than 100 meters, it is recommended to move the controller closer to the door electric lock to shorten the wiring distance. The cross-sectional area of the network cable is 0.2 square millimeters, which is 5 times smaller than our standard wire, so it is absolutely impossible, even if the distance between the controller and the electric lock is very short. The electric lock door magnetic signal line can be a network cable. Some people combine the four strands of the network cable to power the electric lock, although it is close to the norm in theory, it is not recommended. Doing so will cause other hidden dangers such as unstable connection terminals.
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