SU1387187A1 - Self-check commutator - Google Patents

Description

(21) 4097036 / 24-21

(22) 05.05.86

(46) 04/07/88. Bul № 13 (72) A. A. Parail

(53) 621.382 (088.8)

(56) USSR author's certificate

No. 1270729, cl. G 01 R 31/02, 10.24.80.

USSR Author's Certificate No. 921083, cl. H 03 K 17/04, 1982.

(54) SWITCH WITH SELF-MONITOR

(57) The invention can be used to automatically control electrical circuits. The switch with self-control contains switching relay 1, 2, control device 3, comparison elements 4, fault detection and indication device 5, output buses 7, 8, common bus 9 and input combined buses 6. The switch has enhanced functionality due to operation in two modes: self-control mode (performance test) and switching mode of controlled circuits and increased reliability. 1 il.

with

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00

The invention relates to automation and switching technology and can be used in switches for automatic control of electrical circuits.

The purpose of the invention is to expand the functionality by implementing continuous monitoring in the switching mode of several buses and improving reliability.

The drawing shows the functional busbars 7 and 8, the contacts of the second contact group of the relay 2 are connected to the second inputs of the comparison elements 4 bus 9. Next, the operability control of the relay 2 is carried out as described for relay 1. Next, the control device 3 generates control signals, under the influence of which simultaneously alternately switching on and off relays I and 2, closing normally open

on the block diagram of the proposed switch. 10 contacts between each output bus Switch with self-monitoring contains 7 and 8. Monitoring the state of contacts

The main 1 and additional 2 switching relays, the control windings of which are connected to the outputs of the control device 3, the main and additional elements. You have 4 comparisons for the first inputs of which are connected to the outputs of the control device, the device 5 for registration and indication of faults, the input combined relays 1 and 2 of the second contact groups are implemented in the same way as described.

here are 6, output tires 7 and 8 and total

The communication between the output buses 7 and 8 during the influence of the control signal indicates the closure (contacting) of the working contacts of relays 1 and 2.

In the switching mode of the controlled bus 9, the potential of which corresponds to 20 circuits, the control device 3 forms the potential of the outputs of the control device. control signals, under the influence of the Main and Additional commutation of which the relays 1 and 2 are connected, which are made with two contact groups with the closing working contacts

connect the input bus 6 to the output J. bus 7 and 8, the contacts of the second contact groups of these relays are connected to

pami

The switch with self-control works in two modes.

In the self-monitoring mode (switch functionality check), the control device 3 generates control signals, which, alternately, include the second inputs of the comparison elements 4 bus 9. When the information received through the relay contacts and control devices is different, the recorder 5 switches the relay 1 on and off and off, open-

faults and the number of the faulty relay or relay control element.

Thus, in comparison with the known, the proposed switch with self-control provides in self-control mode

corresponds to the control signal potential, with checking the closure of the working contacts of the relay

The normally closed working contacts in the output bus circuit 7 and 8, the contacts of the second contact group of the relay 1 are connected to the second inputs of the comparison elements 4 bus 9, the potential of which

the input to the first input of the comparison element 4 from the control device 3. The status information of the relay is compared on the comparison elements 4 with information from the output of the control device 3.

The state of the comparison elements 4 is monitored (read) by the device 5 for the registration and indication of faults. In case of incomparability of information received through the contacts of the second contact group

1 and 2 in the output bus circuit 7 and 8 and the detection of malfunctions of the working contacts of the “Sticking” type relay, which increases the reliability of the switch without additional control elements in the input 40 and output busbars.

Claims (1)

Invention Formula Switch with self-control, containing the main switching relays, grounding device 1 and control devices 3, fitting contacts of the first contact group The malfunction register and indication unit 5 generates a malfunction signal and the number of the failed relay or relay control element; At the same time, when the control signal is applied, the disconnection between the front bus 7 and 8 is monitored, which indicates the opening of the working contacts of the relay 1. Next, the form 3 control device is connected to corresponding input buses, the movable contact of the latter of which is connected to the first output bus, the main elements of comparison, the first inputs of which are connected to the main group of output buses of the control device and the windings of the respective main switching relays, outputs the main elements of the comparison are connected to the corresponding inputs There are control signals, under the influence of the 55 device for recording and indicating non-certain which are switched on and off alternately, characterized in that relays 2, normally disconnecting for enhanced functionality Indoor working contacts in the output circuit through continuous monitoring The busbars 7 and 8, the contacts of the second contact group of the relay 2 are connected to the second inputs of the comparison elements 4 bus 9. Next, the monitoring of the operability of the relay 2 is carried out as described for relay 1. Next, the control device 3 generates control signals that simultaneously turn on and disables relays I and 2, closing normally open  contacts between each output bus 7 and 8. Monitoring the state of contacts the second contact groups of relays 1 and 2 are implemented as described. the second inputs of the comparison elements 4 bus 9. When information from the relay contacts and control devices is not compared, the device 5 for registering and indicating faults generates a signal , with checking the closure of the working contacts of the relay 1 and 2 in the output bus circuit 7 and 8 and the detection of malfunctions of the working contacts of the “Sticking” type relay, which increases the reliability of the switch without additional control elements in the input 40 and output busbars. Invention Formula Switch with self-control, containing the main switching relays, closing contacts of the first contact group which are connected to the corresponding input buses, the movable contact of the latter of which is connected to the first output bus, the main elements of the comparison, the first inputs of which are connected to the main group of output tires of the control device and the terminals of the windings of the corresponding main switching relays, the outputs of the main comparison elements are connected to the corresponding inputs 1387187 3 in the switching mode of several buses and additional corresponding relays for increasing the reliability, additional additions are added, the first inputs of additional switching relays are connected to additional connections and comparison elements by the number of reference elements, and the communication relays are equipped with two terminals control and winding pins with corresponding groups, with the opening additional switching contacts of the first contact groups of the first relay, the second inputs of additional contacts and again, the main and additional switching elements of the comparison are combined through a corresponding relay, the moving contact the first closing contacts of the second convoy of the contact group of each previous groups, respectively, of the auxiliary relay is connected to the break terminal of the first and main switching relays first contact groups of each are connected to a common bus, the potential of which is subsequent, the moving contact of the first one corresponds to the control potential of the contact group of the latter, and the outputs tional elements Nogo switching relay connected to the comparator Auto-connected to the respective output line swarm, closing the contacts. the inputs of the recorder and the indication of the first contact group of the main fault.