SU1429198A1 - Device for controlling step-by-step selector switch - Google Patents

Abstract

The invention relates to electrical engineering, in particular to apparatus with automatically operating step finders having various functions. The aim of the invention is to simplify the device and reduce power consumption. In the device using two single-winding 4 and 13 and one double-winding 7 with counter-connected windings 8, 9 relays: a double pass of the step finder 1 is provided. 1 sludge.

Description

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The invention relates to electrical engineering, in particular to apparatus with automatically operating step finders having various functions.

The purpose of the invention is to simplify the device and reduce its power consumption.

The drawing shows a principle Q on the circuit of the device for controlling the step finder.

The device contains a stepping finder 1 with a break opening contact 2 (GKSHI) and a brush 3, a reed switch 5 relay 4 with closing contacts 5 and 6, a two-winding reed switch 7 with counter-switching symmetrical winding 8 and 9 and a closing contact 10-12, neutral an electromagnetic 20 relay 13 with closing contacts 14 and 15 and a contact group for switching a large number of circuits with one step finder (not shown), diodes 16 and 17 for separating the circuits, 25 positive bus 18 and negative bus 19. The device starts up with a button 20 Management Board. The device also includes pins 2 and 22 for connecting the 0th and 51st lamellas of the maro g-finder.

In the diagram, the dotted lines show the stepper finder transfer control in the first case from an independent generator (the arrow shows the power on and off of this generator), and in the second case using a self-terminating coil coax, NCTS 23 with intermediate relay 24 and its pin 25 in the Q chain of the step finder (SHI) 26.

The device works as follows.

In the initial position, all elements of the circuit are de-energized, the step finder g5 is in the zero position and its head open contact 2 is open. The closing contacts of all are also open. relay. Pressing the button 20 provides power to the switching circuit - -. No step finder (the diagram shows a dotted arrow). When switching the step finder to the first lamella, the break contact 2 is closed, plus the power source is supplied, to the brush 3 step finder. When the brush slid over the lamellae closes the 51st lamel for the first time, relay 4 does not work (pin 14 of relay 13 is open), but winding 8 of relay 7 along the circuit is activated: positive bus 18, pin 2, brush 3, 51- lamella, diode 16 winding 8, negative bus 19. At the same time, relay 7 self-locks along the circuit: positive bus 18, contacts 10 and 11, winding 8, negative bus 19. Relay 7 closes also contact 12 in the relay winding circuit 13, At 0- The lamella switches on relay I3 and is self-blocked along the circuit: positive 18, contacts 10 and 15, relay 13 winding, negative bus 19. Thus, during the first pass, The searcher 8 includes a winding 8 of the relay 7 and a relay 13, which ensure the switching of the brushes of the stepping searcher and the closure of the contact 14. When the stepping searcher passes the 51st lamella again, the relay 4 switches on the positive power bus 18 circuit, pin 10, brush 3, 51- lamella, pin 14, relay coil 4, negative power bus 19. Relay 4 becomes self-locking through its contact 5 and closes contact 6 in the circuit of winding 9 of relay 7. When the 0th lamella is closed with a brush, contact 3 opens, and winding 9 of relay 7 is activated via the positive bus 18, pin 10, brush 3 0- lamella, pin 6, winding 9, negative bus 19. When windings 8 and 9 are switched on oppositely, relay 7 releases its contacts 10 and 11, as a result of which the whole circuit is de-energized, i.e. comes to its original state. The reset time for reed relays for lowering is 2 ms, the response time of the step finder is on for an order of magnitude higher, so it does not work on the zero lamella during a repeated run.

The operation of the proposed device is considered in relation to step finders of the type ShI 50 and ShIV 50, in case it is applied to step finders of the type ShI 25 or ShIV 25, the 51 lamella is replaced by the 25th.

The proposed solution provides a simplified device, reduces its power consumption.

Claims (1)

Invention Formula A device for controlling a step finder containing a single-winding auxiliary and one-winding electromagnetic neutral relay, v3 14291 water for connecting the zero and the last lamella of the step finder, the switch for connecting the brush of the step finder and leads for connecting the power source, the first leads of the switching and auxiliary relays connected to the lead for connecting the negative pole of the power source, which is , in order to simplify the device and reduce its power consumption, a control button, a winding electromagnetic neutral relay with counter-connected 15 identical windings, two separators diodes and pins for connecting the head contact of the step finder, the first winding pins of the two-winding relay are connected to the home terminal for connecting the negative pole of the power supply, the second winding terminal of the auxiliary relay is connected to the terminal for connecting the last lamella step finder and through its own closing contact with the output for connecting the brush stepper finder, output for connecting the zero lamella of the stepper finder through the make contact of the auxiliary relay connected to the second output of the second winding of the two winding relay and through series-connected closing contact of the two winding relay and switching diode to the second output winding of the switching relay connected through its own closing contact to the output for connecting the step finder brush, the second terminal of the first winding of the two-winding relay is connected via an isolating diode to Connecting last lamella stepper searcher and through its own closing contact with the terminal for connecting the brush stepper searcher who is connected to the terminal for connecting the positive pole of the power source through parallel: NO contact included control buttons like zamy- diy two winding relay contacts and terminals for connection of the head disconnect contact step finder.