SU1236429A1 - Device for checking diversity of closing contacts of electromagnetic relay - Google Patents

Abstract

The invention relates to a measurement technique and can be used to control the contact closure times of electromagnetic relays during their production, as well as during adjustment work. The aim of the invention is to provide two-way tolerance control of contact closure timing. The device contains a winding power supply, a contact power supply, a NOT element, the first and second delay elements, a switch, first and second groups of elements, the number of which in each group is equal to the number of contacts of the monitored electromagnetic relay, and a recording unit containing two channels from the elements of indication and triggers, the number of which in each channel is equal to the number of elements AND in each group. When the switch is pressed, the luminous elements of the indication of the registration unit correspond to the contacts of the monitored relay, for which adjustment is necessary, and the indication elements of the first channel correspond to the contacts of the relay, for which the response time is required, and the second channel increases, i.e. The tolerance control of the contact closure of the electromagnetic relay is carried out. I zp f-ly. I il. S (L to SA: O5 4 GS with

Description

The invention relates to a measurement technique and can be used to control the contact closure times of electromagnetic relays during their production, as well as during adjustment work.

The purpose of the invention is to provide two-way tolerance control of contact closure time of an electromagnetic relay.

The drawing shows a diagram of the proposed device.

The device contains a winding power supply source 1, a winding power supply source 2, a contact power supply source 2, a HE 3 element, the first 4 and a second 5 delay elements, a switch 6, the I elements of the first 7 and the second 8 groups, triggers 9 and 10, the elements 11 and 12 indications, pins 13 for connecting the winding 14 and the contacts 15 of the monitored relay, the register 16, consisting of the flip-flops 9 and 10 and the elements I and 12.

The device works as follows.

In the initial position of the switch 6, the voltage from the power source 1 of the winding enters the fitting inputs of the triggers 9 and 10 of the recording unit III and sets them to the zero state. In this case, the elements 11 of the display are light vehicle, and the elements 12 are not. At the first inputs of elements And the first 7 and second 8 groups there is a typical signal coming from the output of the element NO 3 through the first 4 and second 5 delay elements. On the second inputs and outputs of the elements And the first 7 and second 8 groups - the zero signal.

When the operator 6 presses the switch 6, the voltage is removed from the installation inputs of the flip-flops 9 and 10 of the registration unit 16 to transfer them to the counting mode. When the closing contacts of the switch 6 are closed, the supply voltage from the output of the power supply source 1 1 is fed through the NOT 3 element to the inputs of the delay elements 4 and 5 and to the winding 14 of the monitored electromagnetic relay, which starts to operate. The pins 15 of the relay are in motion. At the same time, through closed controlled contacts, the voltage from the source 2 of the power supply of the contacts goes to the second inputs of the corresponding elements And the first 7 and second 8 groups.

At the two inputs of the elements of the first 7 and second 8 groups, corresponding to the relay contacts, which were closed before the activation time, taking into account the tolerance on its value, there are simultaneously single signals from the delay elements 4 and 5 and the source 2 of the contacts. In this case, the outputs of these elements And there is a signal to the counting input of the flip-flops 9 and 10 of the block 16 registration. These triggers go from zero to one state, while the corresponding elec

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Copies II go out and elements 12 light up to indicate the presence and number of contacts for which adjustment is necessary in order to increase the response time.

After the response time, taking into account the tolerance on its value, a zero signal occurs at the output of the second delay element 5, which arrives at the first inputs of elements AND of the second group 8. At a time equal to the switching time of the relay contacts (tolerance for response times), at the output of the first element 4 delays still present 1 st signal. The contacts 15 of the relays that have closed during this time transfer the corresponding triggers, and the triggers 9 of the registration block 16 in the one state, and the triggers 10 of the registration block 16 do not change their initial zero state. In this case, the display elements 11 corresponding to the triggers 9 are extinguished.

After the response time at the output of the first delay element 4, a zero signal also appears, which arrives at the first inputs of elements AND of the first group 7, blocking the passage of the signal from the source 2 of the contact contacts through contacts 5 of the relay, closing the response time, to the counting input of the corresponding triggers 9 a registration unit 16 which maintains the initial zero state. The corresponding indication elements 11 are hot, indicating the presence and number of contacts for which adjustment is necessary in order to reduce the response time.

Thus, when the switch 6 is pressed, the display elements 11 and 12 of the registration unit 16 are burning, corresponding to the relay contacts for which adjustment is necessary, and the elements 1 1 correspond to the contacts for which the response time needs to be reduced, and the elements 12 to contacts for which it is necessary to increase the response time, i.e., a tolerance test has been carried out for different types of contact closure of the electromagnetic relay.

At the start,: 1n the position of the switch 6, the device returns to the initial state.

The technical and economic effect of the invention lies in the fact that the device allows two-way tolerance control of the contact closure time difference, as well as identifying relay contacts with different switching times with outputting information about the nature of the contact faults (advance or lag when triggered).

Claims (2)

Invention Formula . A device for monitoring the contact closure timing of an electromagnetic relay containing the first delay element, the power source of the winding of the monitored relay, the registration unit connected by the first and second information inputs to the outputs of the first and second groups of elements, respectively, the number of which in each group is one less than the number contacts of the control of the electromagnetic relay, the first inputs of the elements And the first group are connected through the corresponding closing contacts of the controlled relay with the output of the source Contact power supply, characterized in that, in order to ensure two-way tolerance control of contact closure time of an electromagnetic relay, an element NOT is introduced, a second delay element and a switch, and an additional element AND, the output of each which are connected to the corresponding first and second information inputs of the registration unit, and the first input is connected through an appropriate closing contact with the power source of the contacts, with the first inputs cops of the second group are connected to the first inputs of the elements of the first group. connected by the second inputs to the output of the first delay element connected by the input to the output of the element NO and the input of the second delay element connected by the output to the second inputs of the elements of the second group, the output of the power supply of the winding of the monitored relay is connected to the moving contact of the switch connected to the installation input in the initial state of the registration unit, and the closing contact - to the winding of the controlled relay and the input element is NOT. 2. The device according to claim I, characterized in that the registration unit contains, by the number of first and second information inputs, channels consisting of an indication element and a trigger connected by a setup input to the installation input to the initial state of the block, and the counting input - with the corresponding the information input, while in the channels connected to the first information inputs, the indication element is connected to the inverse output of the trigger, and in the remaining channels to the direct output of the trigger.