The principle of the time-delay relay is to reduce the energy consumption by automatically delaying the load closing time to improve user comfort (for example, the ON-OFF switch controls lighting and ventilation at the same time). It is an alternative to conventional industrial relays, and the modular structure can provide more benefits. So there are many symbols for time delay relays . What do they mean?
[The working principle of the time relay]
A time relay is a control device that uses electromagnetic principles or mechanical principles to implement time-delay control. When the coil is energized, the armature and the pallet are attracted by the iron core and momentarily move down, making the momentary action contact open or closed. However, the piston rod and the lever cannot fall along with the armature at the same time, because the upper end of the piston rod is connected with the rubber membrane in the air chamber. When the piston rod begins to move downwards under the action of the release spring, the rubber membrane is depressed downwards. The air in the air chamber becomes thin and the piston rod is damped and slowly descends. After a certain period of time, the piston rod is lowered to a certain position, and the delayed contact action is pushed by the lever so that the movable contact point is opened and the movable contact point is closed. The energization from the coil to the delayed contact completes the operation. This is the delay time of the relay. The length of the delay time can be changed by adjusting the size of the air intake hole in the air chamber. After the draw coil is de-energized, the relay recovers by restoring the spring.
There are many symbols for delay relays. What do they mean?
[Time relay type]
1. Air-damping type time relay: also called air-bag type time relay, it is based on the resistance generated by air compression to delay, its structure is simple, the price is cheap, the delay range is large (0.4 ~ 180s), but the delay The accuracy is low.
2, electromagnetic time relay: delay time is short (0.3 ~ 1.6s), but its structure is relatively simple, usually used in power delay time and DC circuit.
3, electric time relay: the principle is similar to the clock, it is driven by the internal motor speed reduction gear rotation and obtain delay. This kind of relay has high delay accuracy and wide delay time (0.4~72h), but the structure is more complicated and the price is expensive.
Transistor-type time relay: Also known as electronic time relay, it uses time delay circuit to delay. This kind of relay has high precision and small size.
[Time delay relay symbol meaning]
The new relay symbol is represented by the letter K and previously indicated by J. Subdivision is indicated by double letters. Voltage relay: KV, current relay: KA, time relay: KT, frequency relay: KF, pressure relay: KP, control relay: KC , Signal Relays: KS, Grounding Relays: KE
The relay coil is represented by a long box symbol in the circuit. If the relay has two coils, draw two parallel long boxes. Also mark the relay's text symbol in the long box or near the long box. K" or "J ".
Xiaobian epilogue: The above introduced the delay relay symbol for everyone and hopes to help everyone. For more relevant knowledge, please continue to pay attention to this website information platform. Follow-up will present more exciting content for everyone.
[The working principle of the time relay]
A time relay is a control device that uses electromagnetic principles or mechanical principles to implement time-delay control. When the coil is energized, the armature and the pallet are attracted by the iron core and momentarily move down, making the momentary action contact open or closed. However, the piston rod and the lever cannot fall along with the armature at the same time, because the upper end of the piston rod is connected with the rubber membrane in the air chamber. When the piston rod begins to move downwards under the action of the release spring, the rubber membrane is depressed downwards. The air in the air chamber becomes thin and the piston rod is damped and slowly descends. After a certain period of time, the piston rod is lowered to a certain position, and the delayed contact action is pushed by the lever so that the movable contact point is opened and the movable contact point is closed. The energization from the coil to the delayed contact completes the operation. This is the delay time of the relay. The length of the delay time can be changed by adjusting the size of the air intake hole in the air chamber. After the draw coil is de-energized, the relay recovers by restoring the spring.
There are many symbols for delay relays. What do they mean?
[Time relay type]
1. Air-damping type time relay: also called air-bag type time relay, it is based on the resistance generated by air compression to delay, its structure is simple, the price is cheap, the delay range is large (0.4 ~ 180s), but the delay The accuracy is low.
2, electromagnetic time relay: delay time is short (0.3 ~ 1.6s), but its structure is relatively simple, usually used in power delay time and DC circuit.
3, electric time relay: the principle is similar to the clock, it is driven by the internal motor speed reduction gear rotation and obtain delay. This kind of relay has high delay accuracy and wide delay time (0.4~72h), but the structure is more complicated and the price is expensive.
Transistor-type time relay: Also known as electronic time relay, it uses time delay circuit to delay. This kind of relay has high precision and small size.
[Time delay relay symbol meaning]
The new relay symbol is represented by the letter K and previously indicated by J. Subdivision is indicated by double letters. Voltage relay: KV, current relay: KA, time relay: KT, frequency relay: KF, pressure relay: KP, control relay: KC , Signal Relays: KS, Grounding Relays: KE
The relay coil is represented by a long box symbol in the circuit. If the relay has two coils, draw two parallel long boxes. Also mark the relay's text symbol in the long box or near the long box. K" or "J ".
Xiaobian epilogue: The above introduced the delay relay symbol for everyone and hopes to help everyone. For more relevant knowledge, please continue to pay attention to this website information platform. Follow-up will present more exciting content for everyone.
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