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Different Types of Omron Relay

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Omron relay is an electrical device that usually has an electromagnet. Relay is activated by a signal or current in a circuit to close or open another circuit. There are two types of relays, which are solid-state relays and electromechanical relays. In solid-state relays (SSR), switching is fully being handled electronically since there are no contacts in it. On the contrary, electromechanical relays (EMR) use a magnetic force to open and close every contact that is available in the circuits. There are 4 types of solid-state relays and 3 types of electromechanical relays.

Types of Solid-State Relays (SSR)

 

1. Zero-Switching Relays

The load will reach almost zero voltage when the minimum operating voltage is employed. When this happens, zero-switching relays will immediately be switched on. Oppositely, this relay will be switched off when the load reaches almost zero in current and the control voltage will no longer be there. It is very common for people to use zero-switching relays.

2. Instant ON Relays

Just like the name suggests, this relay will instantly be switched on where there is any pickup voltage in the circuit. Instant ON Relays will also be switched ON anytime, no matter if the wave is up or down for the load. 

3. Analog Switching Relays

The amount of potential output voltages for analog switching relays is infinite.  This relay is well equipped with a synchronising circuit. The load of the output voltage is managed by this particular circuit. The load will also be experiencing a function called the Ram-Up function of time, due to the synchronising circuit. When the control voltage is eradicated from the circuit and the load experiences zero current, the analog switching relay will be switched OFF.

4. Peak Switching Relays

The load in peak switching relays will be switched on when the voltage is at the highest amount and there is the presence of control voltage. The relay will also be switched off when the load experiences zero current and the control voltage is no longer there. 

Types of Electromagnetic Relays (EMR)

 

1. Reed Relays

Reed relays are very tine, packed and operate fastly as it is a switch design that has only one contact. The contact in reed relays are also untouched by any outside contagion as it is secured in an envelope that is made out of glass. This also makes sure that the contact will last longer and switching in the circuit will be more reliable. A magnet will close the contact’s end as it is usually covered with gold. This is done so that the conductivity of the contact will be increased.

2. General Purposes Relays

General purpose relays are usually controlled by a magnetic coil as they are electromechanical switches. As the name goes, this relay can be operated with DC or AC current. They can be operated at common voltages and can also manage currents that range from 2A until 30A. General purpose relays also have a lot of switch configuration, very cheap and easily replaceable.

3. Machine Control Relays

This relay is conducted by a magnetic coil. Machine control relays are utilized to handle starters and most industrial units because the relays are heavy-duty.  Since they are strong and not easily broken, the price of a machine control relay is more expensive than the other relays. Machine control relay has the function to be expanded by simply equipping them with accessories. This is one of the relay’s prominent advantages compared to the other relays. Tons of accessories are available.

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