The access control controller is the hardware core of the access control system, and its quality and performance directly affect the stability of the entire access control system. As the access control system plays an increasingly important role in the safety management of enterprises, the traditional mechanical Electromagnetic Lock management can no longer adapt to the safety management of modern life, and its needs are as follows:

1. Improve security: carry out graded and time-based access authority management for designated areas, restrict relevant personnel from entering important areas at will, determine their access levels and allowable time periods according to their positions and work nature, and manage some important areas. For example, bank vaults and subway control rooms are set up with multiple access methods to meet better regional security requirements and prevent internal theft and external theft.

2. Improve management efficiency: Real-time understanding and setting of the status of each access control point through the central management center, reducing the cost of personnel patrolling. The system can record events in real-time, which is convenient for enterprises to make various personnel management reports such as attendance, shift scheduling, etc.

Access control controller purchase advice:

1. Purchase an access controller with anti-crash and self-check circuit design

2. Access controller with three-level lightning protection circuit design

3. The storage capacity of the registration card authority should be large, the storage

   the capacity of offline records should be large enough, and the storage chip should use a non-volatile storage chip

4. The application should be simple and practical, easy to operate

5. The design of the communication circuit should have a self-test function, which is suitable for the needs of large-scale system networking

6. The input circuit of the card reader needs anti-surge and anti-misconnection protection

7. Manufacturers need to provide authoritative quality certification

   
   

1: Purchase an access controller with anti-crash and self-check circuit design

If the access control controller crashes, it will make the user unable to open or close the door, which will bring great inconvenience to the customer, and also increase the maintenance volume and maintenance cost of the engineering company. The access control controller must be installed with a reset chip or selected CPU with a reset function, generally, the 51 series CPU does not have a reset function, and needs to install a reset chip.

2: Access controller with three-level lightning protection circuit design

Since the communication lines of the access control controller are distributed and easily attacked by induction lightning, the access control controller must be designed for lightning protection. We recommend adopting a three-level lightning protection design. First, the large current and high voltage generated by the lightning strike are released through the discharge tube, and then the current and voltage entering the circuit are clamped through the inductance and resistance circuit. The residual current and voltage are then discharged at high speed through the TVS high-speed discharge tube before they cause damage to the circuit.

3: The storage capacity of the registration card authority should be large, the storage capacity of offline records should be large enough, and the storage chip should use a non-volatile storage chip

It is recommended that the registration card authority should reach 20,000, and the offline storage record should reach 100,000, which can meet the storage capacity requirements of most customers and facilitate attendance statistics. Be sure to use non-volatile memory chips such as Flash, and the information will not be lost after power failure or shock.

4: The application should be simple and practical, easy to operate

If the control program is applied, it will undoubtedly increase the training cost and time of the engineer for the customer. The customer will not easily master the operation of the software and will be angry with the engineer's service attitude, which will have a bad impact on the collection and renewal of orders. If the customer does not understand the software, it can easily cause misoperation, resulting in practical inconvenience. Therefore, we suggest that engineers must pay attention to whether the operation of the software is simple, intuitive, and convenient when choosing an access control controller. A one-sided emphasis on powerful functions is not suitable for promotion.

5: The design of the communication circuit should have a self-test function, which is suitable for the needs of large-scale system networking

The networking of the access control controller should be networked by TCP/IP, which is suitable for the needs of large-scale system networking and has better compatibility and scalability.

6: It is advisable to use a high-power well-known brand Access Control Relay Module

, and the output has current feedback protection

The output of the access controller is controlled by a relay. When the controller is working, the relay needs to be opened and closed frequently, and there is an instantaneous current passing through each time it is opened and closed. If the relay capacity is too small, the instantaneous current may exceed the capacity of the relay, which will quickly damage the relay.

7: The input circuit of the card reader needs anti-surge and anti-misconnection protection

During construction, the engineering company often conducts wiring or debugging with power on. It may be due to accidental negligence, connecting the wrong line of the card reader, or accidentally causing a local short circuit. If there is no anti-surge and anti-misconnection protection, it is easy to burn the central processing chip, causing the entire controller to be damaged and malfunction. It needs to be sent back to the manufacturer for repair, which may delay the construction period and increase the construction cost. Good protection can prevent the circuit from burning out even if the power supply is connected to the data end of the card reader, and the anti-surge dynamic voltage protection can avoid affecting the normal operation of the controller due to the quality of the card reader.

8: Manufacturers need to provide authoritative quality certification

Manufacturers need to provide authoritative test reports and product test reports from government quality regulatory agencies. And take care to verify the authenticity of these documents. The quality of products with corresponding third-party certification and supervision will be guaranteed.

Our company has authoritative test reports and product test reports from government quality regulatory agencies, including CE and a series of electromagnetic reports.

Author: Written by Ms.Anna Zhang from S4A INDUSTRIAL CO., LIMITED