What is Wiring requirements for parking lot system cables and signal lines

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There are two requirements for the wiring of the parking lot system, one is to be standardized, safe and reliable, and the other is to strive for neat and beautiful wiring. Pay attention to the following points during the entire wiring process:

1. If the wiring is installed in the building, the cable should be kept balanced or level, and the casing should be added on the outside to ensure that the cable is stable and beautiful;
2. In order to avoid interference, the 220V wire should be laid separately from the signal wire, and should not be placed in the same pipe to save trouble, and the distance between them should preferably be more than 50 cm;
3. All wiring must be sleeved, and PVC or galvanized pipes can be selected to protect the cables and prevent them from being bitten by mice;
4. If there is a breakpoint connection in the wiring process, use a soldering iron to solder it and do insulation treatment; the wiring should be marked, and it will be much easier to debug and maintain in the future.

The following are the specific wiring requirements for cables and signal lines.
1. Cable
The entrance and exit gates and entrance and exit control machines need 220V power supply, using three-core shielded wire (RVVP3*1.5), generally connected to a dedicated UPS dedicated line for power supply, in some cases, AC220V power supply can also be accessed nearby, but it should comply with relevant specifications. Make sure that the ground wire in the AC220V socket in the system is truly grounded.
2. Signal line
The parking lot networking methods can be divided into: 485 communication, TCP/IP communication, RS422 communication, etc. 485 networking cable must use shielded twisted pair RVVSP2*0.5, 485 bus length, theoretically can reach 1200 meters, it is recommended not to exceed 1000 meters. If it exceeds, please choose 485HUB or repeater to improve the communication environment. In order to ensure the stability of communication, connect a resistor at the end of the communication line, or connect all the shielding layers, and the end can be suspended or connected to the ground according to the situation. The 485 network must be a bus structure, no full or partial star structure is allowed. The TCP/IP networking cable can choose super five unshielded twisted pair, and the distance from the controller to the switch or HUB should be less than 100 meters.