Operation - eSSL EM lock Installation Manual

The principle behind an electromagnetic lock is the use of electromagnetism to
lock a door when energized. The holding force should be collinear with the load,
and the lock and armature plate should be face-to-face to achieve optimal

operation.

Operation
The magnetic lock relies upon some of the basic concepts of electromagnetism.
Essentially it consists of an electromagnet attracting a conductor with a force large
enough to prevent the door from being opened. In a more detailed examination, the
device makes use of the fact that a current through one or more loops of wire
solenoid produces a magnetic field. This works in free space, but if the solenoid is
wrapped around a ferromagnetic core such as soft iron the effect of the field is
greatly amplified. This is because the internal magnetic domains of the material
align with each other to greatly enhance the magnetic flux density.
Technical comparison
Magnetic locks possess a number of advantages over conventional locks and
electric strikes. For example, their durability and quick operation can make them
valuable in a high-traffic office environment where electronic authentication is
necessary.
Advantages
- Easy to install: Magnetic locks are generally easier to install than other locks
since there are no interconnecting parts.
- Quick to operate: Magnetic locks unlock instantly when the power is cut,
allowing for quick release in comparison to other locks.