Indicator Light EM DC12V/24V 350Lbs EM Electronic Locks Parts 180GF

Indicator Light EM DC12V/24V 350Lbs EM Electronic Locks Parts 180GF

Principle

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

(known as a 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.

Application modes

For safety purposes, electric locks can be designed to operate in one of two modes

Fail-safe – to protect people: The lock is released if power cuts off.
Fail-secure – to protect property: The lock remains closed if power cuts off.

An electromagnet lock is normally used in Fail-Safe situations, so it must satisfy applicable fire regulations

so as to be safe in emergency situations.

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.
• Sturdy: Magnetic locks may also suffer less damage from multiple blows than do conventiona
• l locks. If a magnetic lock is forced open with a crowbar, it will often do little or no damage 
• to the door or lock. There are no moving parts in an electromagnetic lock to break.