Basic Magnetic Door Lock System
In this article I will only discuss the basics.As with any locking system, local authorities (such as local building inspectors and/or fire captains) may restrict the use of induction locks.It is better to check with these authorities before installing the induction lock.
Install the most basic induction lock system on out-Induction lock is an electrical appliance.It will unlock when you turn off the power.So the way in and out will be some form of exchange.
National, state and local life safety regulations limit the way you choose to export.The local authority (AHJ) that you have jurisdiction may need to connect your power supply to the building fire alarm so that the panel can unlock the magnet when the alarm occurs.In any case, you will need a power supply of sufficient capacity to power your magnet.
1 each 653-1 each BPS-24-1 each DK-In the simple picture above, you can see that electricity travels through an uninterrupted cycle.It starts with the \"\\\" (positive) terminal of the power supply, passes through the outlet and inlet switch, enters the positive terminal of the magnetic lock, and passes through the negative (-) Mag\'s terminal is returned through the negative terminal of the power supply.We know that the magnet is locked because the coil is uninterrupted.
If the loop breaks anywhere along the line, the magnet will be unlocked.When either switch is activated, it disconnects the loop and takes away the power of the magnet to unlock it.Note: always open and close the magnet through the positive terminal.
The use of negative terminals may result in residual magnetism, in which case the magnet will not be released immediately when power is off.The outlet switch can be a palm button, a Touch Bar, or a motion sensor.The input switch can be a key switch, a keyboard, or other access control device.
You can also use wireless receivers and transmitters to control interrupts or loops.In the picture above, I replaced the exit and entry switch in the previous picture with a wireless receiver and transmitter.Following the loop that powers the lock, the power is transmitted from the positive terminal of the power supply to the public (C) terminal on the wireless receiver, and then from the receiver to the positive terminal of the magnet through the normally closed (NC) terminal.
(\"Normally closed\" means that the switch is in the off position unless the wireless transmitter tells the switch to turn on.) The Power completes its loop by exiting the magnet through the negative terminal (-) And restore it to power supply.Please note that another pair of wires are required to power the wireless receiver.
When the wireless transmitter is activated, the relay status on the wireless receiver changes-That is, change the normally closed terminal to open.Note: always open and close the magnet through the positive terminal.The use of negative terminals may result in residual magnetism, in which case the magnet will not be released immediately when power is off.