SU1688299A1 - Device for controlling step finder - Google Patents

Abstract

The invention relates to electrical engineering, in particular to apparatus with automatically operating step finders. The purpose of the invention is to simplify the device and increase reliability. The device contains a stepping finder with an arbitrary number of lamellas, two relays and a control button and allows the stepping finder to operate in automatic mode. 1 il.

Description

The invention relates to electrical engineering, in particular to apparatus, with automatically operating step finders in various areas of the national economy.

The purpose of the invention is to simplify the device.

The drawing shows a schematic diagram of the device.

The device contains terminals for connecting positive 1 and negative 2 poles of the power source, control button with 3 closing and 4 contact opening, brush 5, terminals for connecting the last 6 and zero 7 lamels of the step finder, double-winding reed switch 8 with included symmetrical windings 9 and 10 and closing contacts 11 and 12, a neutral electromagnetic relay 13 with closing contacts 14 and 15 and a group of contacts for switching a large number of circuits with a single step finder (not shown). The breaker head contact of the 16-step finder is also included in the device.

The diagram with dotted lines shows the control of the transfer through the separation diodes 17 and 18 of the step finder 19

in the first case from an independent generator (the arrow shows the switching on and off of the power of this generator) and in the second case using a self-interrupting coil contact (SKShI) 20 with an intermediate relay 21 and. its pin 22 in the circuit of the step finder 19.

The device works as follows.

In the initial position, all circuit elements are de-energized, the step finder is in the zero position and its head open contact 16 is open, all short-circuiting contacts of the relay are open. By pressing the start button, its disconnecting contact 4 breaks the circuit for the possible switching on of the switching relay 13, since during the first pass of the step finder it must be turned off, and the closing contact 3 turns on the winding 9 of relay 8, which makes closing switch 3 on the switching contacts 11 and 12 13. At the same time, the sliver 5 and the step finder transfer circuit are under tension, the first pass of the step finder is in progress. But on the last lamella 6, the second winding 10 of the relay 8 does not turn on, since I close

AND

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The main contact 15 of the switching relay 13 is open. The switching relay is connected to the zero lamella 7 via a circuit: positive bus 1, contact 11, brush 5, lamella 7, contacts 4 and 12, winding 13, negative bus 2. Relay 13 turns on and blocks itself through its closing contact 14, and closing contact 15 prepares the turn-on circuit of the winding 10 of the relay 8. During the secondary passage of the step finder through the last lamella 6, the second winding of the relay 8 is activated: a positive power bus 1, pin 11, brush 5, lamella b, pin 15, winding 10, minus bus 2. When included both windings 9 and 10 relays 8 their closing contacts 11 and 12 p The relays 8 and the brush 5 are de-energized, the relay 13 is energized to transfer the stepping finder to the zero lamella via the following circuit: positive power bus 1, pin 14, contact 16, winding 13, negative power bus 2. On the zero lamella 7 disconnecting head contact 16 opens and the relay 13 is turned off, the circuit is completely de-energized.

Claims (1)

The invention The device for controlling the step finder (SHI), containing two power buses, a control button, a terminal for connecting an SR brush, and terminals for connecting zero and last SHI lamellae, a head disconnecting SHI contact, a two-winding relay with counter-balanced symmetrical windings, a neutral relay two closing contacts, with the first winding pins of all relays connected to the first power bus, characterized by that, in order to simplify the device, the double-winding relay is made with two closing contacts, and the control button is made with closing and opening contacts, the second output of the first the winding of the double-winding relay is connected to the output for connecting the SHI brush, the closing contact of the control button and the first closing contact of the double-winding relay are connected in parallel and switched on between the second power bus and the output for connecting the SHI brush, the output for connecting the last lamella SHI is connected to the second output of the second winding of the two-winding relay through the first short contact of the neutral relay, the output for connecting the null lamella of the PI is connected to the second terminal of the winding of the neutral relay through serially connected disconnecting control contact and the second the closing contact of the double-winding relay and the connection point of the second closing contact of the neutral relay and the head open contact SHI, the second terminal of the winding of the neutral relay is also connected with the second power bus through serially connected head opening contact SHI and the second closing contact of the neutral relay. H 5 ff I L - + - # UL Y # L f l five T6 V i Y Psh & l 0