SU1403136A1 - Device for controlling electromagnetic starter - Google Patents

Abstract

The invention relates to electrical engineering and can be used in remote control devices and in electrical wires of sold mechanisms. The aim of the invention is to eliminate power consumption in a pre-launch state. To control the magnetic starter 2, two intermediate relays 6 and 11 are used, time relay 15 with open contact 16 with time delay when triggered, and control button 1. When the button 1 is pressed for the first time, the actuator 2 is triggered. If the button is held down, after the time delay has elapsed, contact 16 is opened and starter 2 is turned off. If button 1 is released before the timer expires, the starter will not turn off. At the same time, relay 11 is turned off. To disconnect actuator 2, it is necessary to press button 1 again. 2 Il. f (L with

Description

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The invention relates to electrical engineering and can be used in remote control devices and in electric drives of industrial mechanisms.

The purpose of the invention is to eliminate power consumption in a pre-launch state.

Fig. 1 shows the circuit diagram of the device in the first steady state (initial); 2, the same, in the second device state (Operation).

The device for controlling the electromagnetic starter contains a button

1 (or a group of parallel-connected buttons 1) controls, starter

2c winding, the first 3 and second 4 closing and disconnecting 5 block-contacts, the first intermediate relay

6 with winding, first 7 and second 8 closing, first 9 and second 10 opening contacts, second intermediate relay I1 with winding, first 12 and second 13 closing and opening 14 contacts, time relay 15 with winding, disconnecting relay time. When triggered, the first 17 and second 18 leads for connecting the power source.

The winding of the first intermediate relay 6 is connected to the terminals 17 and 18 for connecting the power source via the control button 1. The winding of the actuator 2 is connected to the terminals 17 and 18 for connecting the power source through the first connecting terminal 9 and the first closing contact 1 10 of the first intermediate relay, in parallel to which the first closing block contact is connected.

3 starter 2. The winding of the second intermediate relay I1 is connected to the terminals 17 and 18 to connect the power source through the second disconnected in series the first contact 10 of the first intermediate relay 6 and the second closing block contact 4 of the starter 2.

A time relay coil 15 is connected to terminals 17 and I8 for connecting a power source through a series-connected second contact 13 of a second intermediate relay 1 and a disconnecting block contact 5 of a switch 2 connected in series, in parallel with which a second closing contact 8 of the first relay is connected.

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intermediate relay 6; Parallel to the first disconnecting pin 9 of the first intermediate relay 6, a chain of connected in series disconnecting contact 1.6 time relay 15 and disconnecting contact is connected

14 of the second intermediate relay 11, the common connection point of which through the first closing contact 12 of the second intermediate relay I1 is connected to the connection point of the winding of the second intermediate relay 11 with the second closing block contact 4 of the actuator 2.

The device works as follows.

In the initial state, when the voltage is applied to pins 17 and 18, all switching devices are disconnected, since their windings are de-energized (Fig. 1). When the control button 1 is pressed for the first time, the windings of the first intermediate relay 6 are energized through the circuit: pin 17 - button 1 - winding 6 - pin 18. Relay 6 operates, opens contacts 9 and 10 and closes contacts 7 and 8, and contacts 9 and 10 Do not affect the operation of the device. Pin 7 supplies power to the coil of the starter 2, and pin 8 to the winding of the time relay 15. Winding starter 2 receives power through the circuit: - pin 17 - contacts 16, 14, 7 - winding starter 2 - pin 18, and winding of time relay 15 along the circuit: pin 17 - contact 8 - winding of relay 15 - pin 18.

Starter 2 is activated, opens the auxiliary contact 5 and closes the block contacts 3 and 4, the latter do not affect the operation of the device, and the block contact 3 bypasses the first closing contact 7 of the first intermediate relay 6. Breaking contact 16 of the relay

15 time remains closed, since the relay operates with a delay. Run Start,

If the control button 1 is held down, the contact opens after a time delay.

16 time 15 and breaks the power circuit of the winding of the actuator 2. The latter turns off, opens the auxiliary contacts 3 and 4 and closes the auxiliary contact 5, which do not affect the operation of the device. The winding of the time relay 5 remains under voltage. The push command is executed.

To reset the device, release it.

control button 1. In this case, the winding of the first intermediate relay 6 loses power. The latter is turned off, opens contacts 7 and 8 and closes contacts 9 and 10, and contacts 7, 9, 10 do not affect the operation of the device and contact 8 breaks the power supply circuit of time 15 winding of the relay. The last is turned off, closes the contact 16. The device returns to the first steady (initial) state and is ready for the next start.

If, after actuator 2 triggers, the control button 1 is released, the first intermediate relay 6 turns off, opens contacts 7 and B, and closes contacts 9 and 10, and contact 7 does not affect the operation of the device. Pin 8 breaks the power circuit of the winding of time relay 15. Contact 9 bypasses the chain of contacts 16 and 14, and contact 10 supplies power to the winding of the second intermediate relay P (since the auxiliary contact 4 is closed). It loses the time relay coil 15, but this does not affect the operation of the device, since contact 16 was still closed. The winding of the second intermediate sections 7 and 10 does not affect the operation of the device. Pin 9 breaks the power circuit of the winding of the starter 2, and pin 8 supplies power to the winding of the time relay 15. The coil of the actuator 2 loses power, which, having turned off, opens the block contacts 3 and 4 and closes the block contact 5, and the block contacts 3 and 4 do not affect the operation of the device, and the pin 5 together with the second closing contact 13 of the second intermediate Relay 11 shunts the second closing contact 8 of the first intermediate relay 6. The Stop command has been executed.

To bring the device back to its original state, release the control button. In this case, two cases may occur, releasing button 1 before opening time 16 of contact 16 and after opening.

In the first case, when the control button 1 is released, the first intermediate relay 6 is disconnected, contacts 7 and 8 are opened and clocks 9 and 10 are closed, which does not affect the operation of the device. The winding of the second intermediate relay 11 receives power

relay 11 is powered by contacts 16 and 12, and the winding

pi: pin 17 - contacts 10, 4 - relay 1 winding - pin 18. Relay 11 is activated, disconnects contact 14 and closes contacts 12 and 13, and

the latter do not affect the operation of the device. ki second intermediate relay 11. STV. Pin 12 together with the contact Last is turned off, opens the link 16 of the time relay 15, shunts the chain of steps 12 and 13 and closes the contact 14.

The device returns to the first stable (initial) state and

pins 10 and 4.

The device switches to the second steady state of Operation (Fig. 2, before the next start, the thick lines show the circuits, being - In the second case, before being released under the current). As can be seen from Fig. 2, the power supply circuit of the winding of the actuator 2 of the control button G opens the contact 16 of the time relay 15 and breaks the power supply circuit of the winding of the second connected from the disconnecting contact 16

time relay 15 disconnecting contact g of an accurate relay 11, which, by switching off-;

14 of the second intermediate relay 11, which allows triggering of the actuator 2 immediately after releasing the control button 1 (minus the return time of the relay 6 and the operation of the relay 11 in the order of 0.05-0.08 s), i.e. the Stop and Emergency Stop commands are executed similarly.

To execute the Stop command (Emergency Stop), it is necessary to press the control button 1 again. In this case, the first intermediate relay 6 is triggered, opens contacts 9 and 10 and closes contacts 7 and 8, and the end 50

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This opens contacts 12 and 13 and closes contact 14, which does not affect the operation of the device. The winding of the time relay 15 is powered via pin 8 of the first intermediate relay 6 (the remaining switching devices are disconnected). When the control button 1 is released, the first intermediate relay 6 is turned off, which, having opened, opens contacts 7 and 8 and closes contacts 9 and 10, and contacts 7, 9, 10 do not affect the operation of the device, and contact 8 breaks the power supply winding relay time 15

time relay 15 - through contacts 13 and 5. After the time lasts out, contact 16 of relay 15 is opened. The power supply circuit is broken to the next start, In the second case, before the release

the control button D opens the contact 16 of the time relay 15 and breaks the power supply circuit of the winding of the second intermediate relay relay 11, which, having switched off;

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This opens contacts 12 and 13 and closes contact 14, which does not affect the operation of the device. The winding of the time relay 15 is powered via pin 8 of the first intermediate relay 6 (the remaining switching devices are disconnected). When the control button 1 is released, the first intermediate relay 6 is disconnected, which, having otKniochichivshi, opens contacts 7 and 8 and closes contacts 9 and 10, and contacts 7, 9, 10 do not affect the operation of the device, and contact 8 breaks the winding supply circuit relay 15 time.

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The latter is switched off, closes the contact 16. The device returns to the first stable (initial) state and is ready for the next start.

Thus, the use of the proposed device when performing the same algorithm of operation makes it possible to exclude energy consumption in the periods between starts, in contrast to the prototype device, in which the time relay is turned on during these periods.

Formula inventions

A device for controlling an electromagnetic starter, which contains a control button, leads for connecting the starter winding, leads for connecting the starter block contacts, the first intermediate relay with one closing and two normally open contacts, the second intermediate relay with one closing and one breaking contact, one contact and leads for connecting a power source, and the winding of the first intermediate relay is connected to the leads for connecting a power source through a control button The s for connecting the start-up winding; the bodies are connected to the leads for connecting the power source through the successively: coherently connected first disconnecting terminal and the first closing contact of the first intermediate relay, which is connected to the terminals of the first closing contact block starter, winding

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The second intermediate relay is connected to the terminals for connecting the power source through the second disconnecting contact of the first intermediate relay connected in series and the terminals for connecting the second closing contact switch of the actuator, the first winding terminal of the time relay is connected to the first terminal for connecting the breaking contact of the actuator, second winding terminal the time relay is connected to the second output dp of the power supply connection, parallel to the first disconnecting contact of the first intermediate relay is connected and a chain of serially connected time relay contacts and a disconnecting contact of the second intermediate relay, the common connection point of which through the first closing contact of the second intermediate relay is connected to the connection point of the winding of the second intermediate relay with an output for connecting the second closing contact switch of the actuator, characterized in that for the purpose of energy consumption in the pre-start state, the first and second intermediate relays are provided with a second closing contact, each time relay i but to break contact and the ON-delay, the first and second terminals for connecting the interrupter contact actuator block connected to a first terminal for connecting the power source via the second normally open contacts of the first and second intermediate relay.

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Claims (1)

The formula of the invention of the second intermediate relay is connected to the terminals for connecting the power source through the second disconnecting contact of the first intermediate relay and the conclusions for connecting the second closing contact block of the starter, the first output of the winding of the time relay is connected to the first terminal for connecting the disconnecting block contact of the starter, the second terminal of the time relay winding is connected to the second terminal for connecting the power source, 15 parallel to the first disconnecting A device for controlling an electromagnetic starter comprising a control button, terminals for connecting a starter winding, terminals for connecting block contacts of a starter, a first intermediate relay with one NO and two NO contacts, a second intermediate relay with one NO and one NO contacts, a time relay with one contact and conclusions for connecting the power source, and the winding of the first intermediate relay is connected to the terminals for connecting the power source through the control button, To connect the starter windings, they are connected to the terminals for connecting the power source through the first disconnecting and first closing contacts of the first intermediate relay connected in series, the leads are connected in parallel (for connecting the first closing block-contact of the starter, the coil from the first intermediate relay is connected to a chain of series-connected contacts time relay and NC contact of the second intermediate relay, the common point of connection of which through the first NC CT of the second intermediate relay is connected to the connection point of the winding of the second intermediate relay with the output for connecting the second closing contact block of the starter, characterized in that, in order to exclude power consumption in the pre-start state, the first and second intermediate relays are equipped with a second closing contact, each time relay made with an NC contact and a time delay during operation, and the first and second terminals for connecting the NC block contact of the starter are connected to the first terminal for for prison power source via the second normally open contacts of the first and second intermediate relay. 11 1Q