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What is the function of the access control power supply?

February 23 , 2023

The connection terminals of the special power supply for access control generally include the following: power output +12V, power output GND, switch control signal input push, electrical signal control input control+ and control-, normally closed electric lock control output NC, Normally open electric lock control output terminal NO, where the power output terminal +12V and power output terminal GND are connected to the +12V and GND of the access controller or all-in-one machine;

Power Supply

The power output terminal GND and the switch control signal input terminal push are connected to the door opening button and the door opening switch signal output by the access control. Note that this interface can only be connected to a pure switch signal. If the signal has power, it will be troublesome. The control part of the power supply may be blocked. burn. Sometimes several devices need to control the electric lock at the same time, as long as the pure switch signal can be directly connected in parallel to achieve common control; the electric signal control input terminals control+ and control- are connected to the electric signal for controlling unlocking output by the access control or building intercom, if the device If the control output is an electrical signal, use these two ports, and the voltage must be between 5-12V;


The control output terminal NC of the normally closed electric lock (such as magnetic lock, conventional electric mortise lock, power-on lock type cathode lock, etc.) of the special power supply for access control is connected to the positive pole (red line) of the normally closed electric lock, and the negative pole (black line) of the electric lock ) is connected to the GND of the special power supply for access control; the control output terminal NO of the normally open electric lock (such as electric control lock, power-on unlocking type cathode lock, etc.) is connected to the positive pole (red line) of the normally open electric lock, and the electric lock The negative pole (black wire) of the access control is connected to the GND of the special power supply for access control.

Access Power Supply

What needs special explanation is the control of the electric control lock. There is no difference between the positive and negative of the two wires. As long as one is connected to the NO terminal and the other is connected to the GND, it is enough. When connecting the electric control lock, special attention must be paid. First of all, the special power supply for access control and the door opening delay of the simple access control all-in-one machine should be adjusted to the minimum, otherwise the high current of the electric control lock up to 3A is like a flash flood, and the connected equipment will be burned.

Author:Written by Ms.Vivian He from S4A INDUSTRIAL CO.,LIMITED

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  S4A-Security For All.S4A Industrial Co., Limited, Founded in 2010, We have been dedicating in access control production R&D and sales for 10year till now. With the belief that we do one thing well in a lifetime, our CEO has been in this industry for 15 years. During the past 10 years, our products have been exported to various countries and regions. And 90% of customers come from the recommendations of cooperative customers, and 80% of the turnover comes from cooperative customers in the past 10years.Your business is a plant, we are the gardener, our mission is to water and fertilize the plant, and make it become the towering tree. We attach great importance to the partner's appeal, customer's suggestions, and feedbacks. To strengthen Product quality awareness, client's service awareness. Our clients and S4A are on the same path walking for many years.       S4A's future would be even more brilliant, this is related to all of our staff's working sweat. When you join this team, you will feel an invisible power to drive walk forward. S4A mainly produces a series of security Door Access Control such as:Network Access Controller, Locker board, Electromagnetic lock, Standalone door Controller, Automatic door opener, etcOur team can manufacture products, sell products, and do after-sales.In the realm of access control, one company stands out for its unwavering commitment to providing security services for everyone. S4A, which stands for "Security for All," has been at the forefront of access control technology for the past 13 years. With its own state-of-the-art factory and a strong focus on research and development, S4A has continuously delivered cutting-edge access control machines with the latest functions. Their dedication to product quality, customer feedback, practicability, and cost performance sets them apart as a leader in the industry.Factory and R&D Expertise:S4A takes pride in its fully-equipped factory, where skilled engineers and technicians work tirelessly to develop and manufacture access control solutions that meet the highest standards. The company's investment in research and development has resulted in a steady stream of innovative products that cater to evolving security needs.By staying ahead of the curve, S4A ensures that their customers have access to the latest advancements in access control technology.Quality Assurance and Customer Feedback:At S4A, product quality is of paramount importance. The company adheres to rigorous quality control procedures throughout the manufacturing process to guarantee the reliability and durability of their access control machines. Each product undergoes comprehensive testing to ensure it meets industry standards and exceeds customer expectations. S4A also places great value on customer feedback, actively seeking input to continuously improve their products and services. By listening to their customers, S4A maintains a customer-centric approach and delivers solutions that address real-world security challenges.Practicability and Cost Performance:S4A understands that access control solutions must not only be technologically advanced but also practical and cost-effective. The company's emphasis on practicability means that their products are designed to be user-friendly, easily integrated into existing systems, and adaptable to various environments. S4A's access control machines are known for their intuitive interfaces, simple installation processes, and seamless compatibility with other security systems. Additionally, S4A strives to provide cost-effective solutions without compromising on quality. Their competitive pricing ensures that security is accessible to businesses and individuals of all sizes.With 13 years of industry experience, S4A has cemented its position as a leading provider of access control solutions. Through their dedication to "Security for All," the company has set a benchmark for excellence in product quality, customer satisfaction,practicability, and cost performance. S4A's in-house factory and research and development capabilities enable them to stay at the forefront of technological advancements in the field of access control. As the company continues to evolve and innovate, S4A remains committed to empowering individuals and organizations with the highest level of security, ensuring that everyone can enjoy the peace of mind that comes with a reliable and efficient access control system.We can create value for you!Quality takes great importance for a company's credibility, and buyer's every penny spend must worth it. That is our most basic principle. Our business mainly for wholesale, so we could offer large quantities at competitive prices. During the past 10 years, We work hard to create value for our customers, and with our help, customers have an increasing market share. 99% of the customer...<
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