Smart Community Access Control System Classification and Cabling Introduction

Access control, also known as access control system (ACCESSCONTROLSYSTEM). It is a digital management system that managers enter and exit. The common access control systems include: password access control systems, non-contact IC cards (inductive IC cards) access control systems, and fingerprint iris hand biometric access control systems.

Access control system classification

1. Without network access control, it means that one machine manages one door. It cannot be controlled by computer software, nor can it see records and is directly controlled by the controller. It is characterized by low prices, simple installation and maintenance, inability to view records, unsuitable for more than 50 persons or frequent movement of personnel (indicating frequent entry and departure), and not suitable for projects with more than 5 doors.

2,485 network access control, is the type of access that can communicate with the computer, direct use of software management, including card and event control. Therefore, it is easy to manage, control is centralized, records can be viewed, and records can be analyzed and processed for other purposes. The feature is that the price is relatively high and the installation and maintenance are increased. However, the training is simple, and value-added services such as time and attendance can be performed. Suitable for many people, large mobility, and many projects.

3, TCP/IP access control, also called Ethernet networking access control, is also a network access control system, but through the network line to the computer and controller networking. In addition to having all the advantages of the 485 access control network, it also has the advantages of faster speed, simpler installation, and larger number of networks, and can be networked across regions or across cities. However, there are high equipment prices and require computer network knowledge. Suitable for installation in large projects, large numbers of people, speed requirements, cross-regional projects.

4. The fingerprint access control system is the access control device that manages by using a fingerprint instead of a card. It has the same characteristics as the 485, but it has better security. The disadvantage is that the number of registered people is small, and the speed is slow.

Access control system construction wiring

Card reader to the controller's line, it is recommended to use 8-core shielded multi-strand twisted-pair cable (of which three cores standby, if you do not need card reader sound and light feedback legitimate card does not connect the LED line), the data line Data1Data0 twist each other. The wire diameter is recommended to be 0.3 square millimeters or more. The maximum length cannot exceed 100 meters. The shielded wire is connected to the GND of the controller. The button-to-controller wire is recommended to use two core wires with a wire diameter of 0.3mm2 or more.

The cable that is electrically locked to the controller is recommended to use a two-core power cord with a wire diameter of 1.0 mm2 or more. If more than 50 meters to consider using a thicker line, or multiple parallel, and; or through the fine-tuning button power supply, increase the output voltage to about 14V. Do not exceed 100 meters in length. Magnetic wire to the controller, it is recommended to choose two core wire, wire diameter in the 0.3 square mm or more, if you do not need to understand the door on-line switch state or no door for a long time does not turn off the alarm and illegal break into the alarm function, the door magnet wire can not be connected .

Controller-to-controller and controller-to-converter lines are recommended to use 8-core shielded twisted-pair cable. The wire diameter is more than 0.3mm2, 485+ and 485- must be mutually twisted, 6 cores are spare, shielded wire can not be connected, if communication is not smooth, consider using shielded wire to connect all controller GND, or A 120 ohm terminating resistor is connected in parallel between the 485+ and 485- of the last controller of the 485 bus to improve the communication quality. The length of the 485 bus can theoretically reach 1200 meters. It is recommended not to exceed 800 meters depending on the number of controllers or the complexity of the communication environment. If more than please use 485HUB or repeater to improve the communication environment.

All cabling must be sleeved. PVC tubing and galvanized tubing can be used to prevent rats from breaking the line and causing malfunction.

Although the controller has good anti-static, lightning-proof and leakage-proof design, please ensure that the controller chassis and the AC ground wire are connected perfectly and that the AC ground wire is grounded.

It is recommended that you do not always remove and insert the terminal block. Always unplug the terminal and perform corresponding welding work.

Do not disassemble or replace the controller's chip without authorization. Non-professional operation will damage the controller.

It is not advisable to dock other additional equipment without authorization. All unconventional operations must be communicated to our engineers beforehand.

Do not connect the controller and other high current devices to the same power outlet.

The installation height of the reader button is 1.45 meters above the ground, which can be appropriately increased or decreased according to the customer's usage habits.

The controller is recommended to be installed in a well-serviceable location such as a weak electric well.

The wiring terminal should pay attention to the standard wiring. Do not expose the exposed metal part too long to avoid short circuit and communication failure.