SU1216430A1 - Arrangement for controlling group of compressors - Google Patents

Description

". .

The invention relates to the field of compressor control.

The purpose of the invention is to expand the functionality by providing control both manually and in automatic mode.

The drawing shows a diagram of the proposed device.

The device contains magnetic starters 1-5 of compressor drives connected to the outputs of the switch 6 of the sequence of switching on, time relay 7-10 with contacts 11-14, respectively, contacts 15-18 of temperature sensors, as well as intermediate relay 19 with contacts 20 and 21, respectively relay 22 with contacts 23 and 24, intermediate relay 25 with contacts 26 and 27, intermediate relay 28 with contacts 29, decoupling diode 30, starting relay 31 with contacts 32, diode node 33, starting diodes 34-37 and program switch 38 In addition, the drawing shows d iodas 39-48, in Suitable in diode node and tayuke outputs A to E software switches and outputs switch F-M sequence includant.

The device works as follows.

In the manual mode of operation (regardless of the contact status of the temperature sensors), the program switch 38 is set to one of the positions B to E, which correspond to the inclusion of one, two, three, four, and five compressors, and the switch 6 of the order of starting is set to one of the positions W-M, which correspond to the inclusion of starters in the order of 1-2-3- 4-5 | 2-3-4-5-1; 3-4-5-1-2; 4-5-1 2-3e and 5-1-2-3-4. If software switch 38 is in position B, and switch 6 of order B is in position W, then power is supplied only to magnetic starter 1., In position B of software switch 38, power is supplied through starting diode 34 to magnetic starter 1, as well as through diode 40 node 33 to time relay 7, which closes its contacts 11 after a predetermined period of time, through which power is supplied to intermediate relay 19. Contacts 21 between 302

the precision relay is closed and power is supplied to the magnetic starter 2.

In position E of the program switch 38, power is supplied through

starting diodes 34-37 to the magnetic starter 1, to contacts 11-14 of the relay and via diodes 40, 43, 46 and 48, to time relay 7 and to contacts 20, 23 and 26 of intermediate relays 19,

22 and 25. After a predetermined period of time, the time relay 7 is activated, switches its contacts 11 on an intermediate relay 19, which supplies power through contacts 21 to the magnetic starter 2 and via contacts 20 to time relay 8. After a predetermined period of time has elapsed, the relay 8 times is triggered, turns on - with its contacts 12 intermediate

relay 22, which supplies power through the contacts 24 to the magnetic starter 3 and through the contacts 23 to the time relay 9. Similarly, magnetic starters 4 and 5 are included.

When the position of the switch 6 changes, the switching order of the magnetic starters changes during automatic operation, in position A of the program switch 38, power is supplied to the starting relay 31, which through its contacts 32 supplies power to the time relay 7 through diodes 45, 42 and 39 and the decoupling diode 30 is connected to the magnetic starter 1. After a predetermined interval of time elapses, the contacts 11 of the time relay 7 are closed, and the intermediate relay 19 is prepared for switching on. The inclusion of the intermediate relay 19 and through its contacts 21 of the magnetic actuator 2 is carried out when the predetermined temperature is reached, when the contacts 15 of the temperature sensor are closed. Through contacts 20 of intermediate relay 19, power is supplied to the relay.

8 time, the contacts 12 of which, after a specified period of time, close and prepare to turn on the intermediate relay 22, which turns on when the contacts are closed

16 temperature sensor and supplies power to the magnetic starter 3 through the contacts 24. The inclusion of the remaining magnetic actuators is similar, and the shutdown occurs in

Reverse order as the contacts of temperature sensors 15-18 are opened.

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Claims (1)

A DEVICE FOR MANAGING A GROUP OF COMPRESSORS, containing magnetic actuators for compressor drives connected to the outputs of the switch-on sequence, a time relay with contacts, and also contacts of temperature sensors, characterized in that, in order to expand the functionality of the device, it additionally contains an intermediate relay decoupling diode , starting relay, diode unit, starting diodes and program switch connected by an input to an additionally installed power source, the first output - to the start relay, the second output to the first output of the decoupling diode, and the remaining outputs to the diode node and through the contacts of the time relay to the intermediate relays, the second output of the decoupling diode connected to the diode node and through the contacts of the start relay to the power source, one of the relays time is connected to the diode node not directly, but the rest through. intermediate relay contacts, starting diodes are connected between the program switch outputs, the temperature sensor contacts are connected to the diode node, and one of the inputs of the sequence switch is connected to the second output of the program switch, and the remaining inputs are connected to the power supply via S contacts of the intermediate relays. > 1 1216430