How To Choose Magnetic Locks For Access Control Systems?

 Nowadays, for security reasons, there are too many places where magnetic locks are installed to protect the whole family. Like business buildings, offices, homes, etc. But in the face of the variety of locks on the market, here are now some suggestions for choosing magnetic locks for access control systems.

 

How to choose a magnetic lock?

Electromagnetic locks have a delicate appearance, and the surface should not have obvious scratches or rust. The key to the magnetic lock is to see how hard it is to pull; special equipment is needed to measure, so after installation can only be pulled suddenly and forcefully by hand Pull does not open properly, but pay attention to the installation of electromagnetic lock body to suit the suction, suction iron installation is not possible too tight, otherwise it will affect the resistance.

Electromagnetic Lock

Electromagnetic Lock

When choosing a magnetic lock, first distinguish between 90 degrees open the door (one-way door) and 180 degrees open the door (two-way door), 180 degrees open the door to the front to use the electric drop bolt lock. 90 degrees open the door can use magnetic locks, electric locks, cathode locks, glass door locks, electric latches, etc. Door closer is based on the weight of the door, determined by the volume and material of the door. The bracket is chosen because of its beauty, security and convenience.

 

Identification of electromagnetic locks for doors from technical indicators
Magnetic locks can also be identified from a variety of technical indicators. Standard qualified magnetic locks, generally provide input voltages of 12V and 24V (the difference between single and dual coils) and they are selected and switched by jumper wires. There are several ways to judge magnetic locks.

 

Circuit board: Bad magnetic locks can be identified from the circuit board, bad magnetic lock circuit board printing is rough, the layout is very simple, there is no voltage sensitive resistor (i.e. surge, there are generally two), only one set of voltage input.

Electromagnetic Lock

Electromagnetic Lock


Resistance measurement: first unplug the magnetic lock 12V and 24V switch jumper (Note: do not need to be energized), there are generally four terminals (jumper), test its red and black two lines, resistance value of about 50 ohms is good.


Current value after power up: the magnetic lock through 12V voltage, measure the current value, subject to the market price. 280KG (600lb) of the magnetic lock is generally good at 400-450ma, 450ma or less is not enough tension; if through 24V voltage, the market value or the actual value should be 200 mA.


Insulation value: standard qualified magnetic lock body insulation value should be infinity, the specific value should be more than 50 megohms; specific test location is cutting steel plate and lock body output line.


The perpendicularity of the steel plate: cutting steel plate in principle to minimize touching or soiling by hand, the better the standard of qualified magnetic lock steel plate perpendicularity and parallelism. The quality of the plating should be good or bad to the non-oxidation mark on the plate.


Gluing inspection: the magnetic lock glue should not appear bubbles, should be flat and neat, no cracks, square angle.

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