The design of the automatic electromagnetic lock (or magnetic lock) is the same as that of the electromagnet. It uses the principle of electromagnetism. When the electric current passes through the silicon steel sheet, the electromagnetic lock will produce a strong suction force to tightly attract the iron plate to lock the door. So it is widely used in automatic doors, but this kind of lock will have insufficient suction or no suction failure after long-term use. So how should this kind of failure be solved?
1. Automatic door magnetic lock (electromagnetic lock system) has a little suction or insufficient suction. Reasons and solutions:
1. The magnetic lock is not installed in a standard manner when it is installed.
2. The traction plate of the magnetic lock is installed too tightly, so that the magnetic lock body and the traction plate are not completely sucked together, but a certain part is sucked together. This is bound to cause insufficient suction. You can loosen the traction plate a bit to allow the traction plate to have a range of motion, so that the lock body and the traction plate can be completely attracted.
3. If the inspection is not the above problem, then you can consider the problem with the wire you selected, you can use a multimeter to measure the voltage of the magnetic lock power input (the normal condition of the magnetic lock is 12V). The farther the magnetic lock is from the power supply, the greater the voltage drop will be. Insufficient voltage will also cause insufficient suction power of the magnetic lock, or no suction power at all. Our requirement: The distance between the power supply and the magnetic lock is within 50 meters, and it is recommended to use a power cord with a cross-sectional area of 1.0 square millimeter; if it exceeds 50 meters, the cross-sectional area of the power cord should be doubled (2.0 square millimeters) within 100 meters, or two 1.0 square millimeter power lines are connected in parallel.
2. Automatic door magnetic lock (electromagnetic lock) has no reason and solution:
1. First determine whether there is any problem with the power supply for the magnetic lock. Please use a multimeter to check whether the input voltage is normal at the terminal connected to the power cord of the magnetic lock. Normally, the voltage should be above 12V; if not, please find the problem with the power supply.
2. If there is no problem with the power supply after the above test, then check whether the power cord of the magnetic lock you choose meets the requirements (please refer to the power cord specification above).
3. If there is no problem in the previous two steps, the power supply is normal, and the power cord selection is standard; then, please use a multimeter to check whether the input voltage of the magnetic lock is normal; if the input voltage of 12V is normal, there are two situations:
A. The wiring terminal is not connected properly, please reconfirm and connect the wiring;
B. There is no problem with the wiring. That is, there is a problem with the magnetic lock, please contact the factory for repair.
Author:Written by Ms.Anna Zhang from S4A INDUSTRIAL CO.,LIMITED
Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.
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