DE2832952A1 - TEST DEVICE FOR A RELAY WITH EVL. SEVERAL CONTACTS AND CONTROL COILS - Google Patents

Description

2 ^ J ₁ -J! 'οη

£ 83295-2

TEST DEVICE FOR EIH RELAYS WITH MULTIPLE CONTACT SETS XJND CONTROL FLUSH

The invention relates to a test device for a relay with a plurality of sets of contacts and control coils, in particular for relays that are used in electromechanical switching systems.

The testing of relays has so far been carried out in hand-controlled test devices, in which the test person one after the other had to carry out the various types of control (operation, measured values, switching paths, etc.), according to a specific one for each type Test specification. As a result, checking relays has been a tedious, tedious, and error-prone activity.

The object of the invention is to propose a semi-automatic test device with which a quick control of the newly manufactured relays at the rapid pace of relay manufacturing is made possible by referring to nominal and permissible limit values provided by the test device and are different depending on the type of regulation and control to which the relay is to be subjected.

The test device according to the invention as described in claim 1 is defined, enables the analysis of the logical functions through which the theoretical switching states of the contact sets of the relay are determined, the discovery of logical states which represent the actual switching states, and the Comparison of the latter with the logical states representing the target states and finally the display of Mistakes.

9098Ö7 / OÖS3

With regard to features of preferred embodiments of the invention, reference is made to the subclaims.

The invention is explained in more detail below on the basis of a preferred exemplary embodiment with the aid of the drawings explained.

Fig. 1 shows the external view of the testing device.

Figures 2 and 3 show a typical relay under test.

Fig. 4 contains a table with the structure of the contact sets depending on the tens and units of the contact set numbers.

5 and 6 contain tables from which the switching state of a contact pair is shown depending on the type of contact and the phases of the switching path of the contacts specifying the control values of the phases and the reference of these phases (areas) with regard to the values.

Fig. 7 contains diagrams showing the location of the fixed and movable areas depending on the type of contact as well as the logical States (a, c, e, f) indicate which are a measure for the values (cfcai etc, cte, ctf).

Figures 8 to 10 show circuits in which the logical "witness" states are generated, respectively the switching states of the contacts of the contact sets depending on the numbers of the contact sets and the control values.

Fig. 11 shows a movable area defect detection circuit.

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FIG. 12 contains a diagram in which, according to the two scales of values eic and e2c, the movable areas are shown within the fixed areas of the contacts RT and TR.

Fig. 13 shows a circuit in which a control value (a) is formed in the form of a logic state.

14 contains a table with the switching path tolerances that are permitted for the various contact types are and for the two measures of value eic and e2c.

Figure 15 shows the control circuitry for the travel of the common needle of the relay contact set.

16 shows the circuits for storing and signaling errors in the values, the switching path and from Ground faults.

17 shows the circuits for checking, storing and signaling response errors of the Relay.

18 contains diagrams for the distribution of the operational controls over counters C1 and C2 of the cycle distributor.

19 shows the circuitry for the detection, storage and display of installation errors of the armature on the relay core.

In the embodiment according to FIG. 1, the testing device has a relay test stand 1 into which the relay 2 is plugged and which enables the recording of the relay parameters to be checked. This test stand 1 is an electronics part 3

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assigned, in which the control signals for the relay are developed and in which the characteristic values of the relay are manually or automatically evaluated and controlled.

The test stand 1 has a stand 4, the side has a vertical leg 5 and a hydraulic cylinder 6 horizontally. The relay 2 is between two jaws

7 inserted, one of which can be moved with the cylinder 6, so that the relay is clamped between the two jaws and can be held by the thigh. A cylinder not visible in the figure provides the rear connection the connection contact tracks of the relay with a connector leading to the electronics part by vertical displacement of the latter. On the leg 5 is a horizontal support beam

8 attached, push through the stylus 9 under the influence of small pneumatic cylinders 10, each pneumatic cylinder a linear transducer for the stylus displacement wearing. Each stylus 9 is assigned to a contact set of the relay and is located above this contact set at the level of a mobile needle, via which the armature movement is transmitted to the moving contacts of the relay.

Two such needles made of insulating material are usually provided in relays for telecommunications. You own Notches and freely penetrate the contacts of the contact set near the contact point. A needle 16 is stationary arranged between rigid strips 17 and 18 (Fig. 2) of the contact set 19, between which the movable contact springs like 20 and 21 are located. A movable needle 22

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shifts when the relay is activated under the influence of an angle piece 23 connected to the armature 24. One Spring 26 keeps armature 24 away from magnet core 25 as long as the control coil is de-energized.

All contact springs are used in the manufacture of the The contact set is bent in such a way that its free end develops a restoring force in the direction of the fixed magnetic circuit 27. The notches of the stationary needle 16 determine in the rest state of the relay a substantially equal distance between the Contact springs of the same contact type. The notches of the mobile Needle 22 move at the same time a contact spring of each contact pair when the control coil conducts and causes a current thus the galvanic separation between certain contacts, the galvanic connection between other contacts or even both operations at the same time with respect to three contact springs lying next to each other. If two contacts are connected to one another in the idle state, they are called idle contacts or contacts R (contacts 20 and 21). If contacts 28 and 29 are only connected when the relay is energized, so they are called working contacts or contacts T. Three contact springs 30, 31 and 32, one after the other stationary, mobile and stationary, are called normally open contacts or contacts RT, if first the galvanic connection of springs 30 and 31 is separated before the connection of the springs 31 and 32 is made will. After all, three contacts are called working / normally closed contacts or contacts TR if the galvanic connection the Kontaktfederη 31 and 32 is made before the connection between the springs 30 and 31 is released. The latter

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Both types of contact have the same structure from the outside and only differ in their operating behavior due to the different elastic force of the corresponding contact springs.

The stylus 9 supplies the transducer II with the displacement of the mobile needle 22 during operation of the Relay. The total displacement of the needle is referred to as the switching path of the relay. The contact springs that make the shift Due to the notches of the mobile needle, they are called mobile springs in contrast to their counterpart, the stationary ones Are called springs because they are not subject to this shift. A mobile contact spring forms or releases a galvanic one Connection to the opposite stationary contact spring after the mobile needle 22 has part of the switching path covered, whereby this part varies depending on the type of contact. With the term "value" the partial shift the mobile needle, which is required from the start of the switching path up to the moment when a galvanic connection is established is established or resolved. The values and switching paths are usually given in hundredths of a millimeter. The test device can determine the switching states of contacts R and T in the first switching travel phase and in the second switching travel phase take up.

The electronic part has three panels 35 to control the contact path of the contact sets. Each relay can be in the Did have three sets of contacts El, E2 and E3. Each panel 35 consists of a display counter 36, which is in hundredths of a millimeter and thousandths of a millimeter the switching path of the relay

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indicates a switch 37 and a lamp 38 for the switched position of the panel. It is necessary to change the switching path for the three sets of contacts to be checked separately, since the elbow 34 that the mobile needle 22 of each set of contacts moved, bent. Three further fields 40 in which the numbers of the contact sets can be set and the "values" are checked, lie parallel to the fields 35. The numbers of the contact sets are on coding wheels 41 set. In a display column EL there are several yellow light-emitting diodes on which the switching status of the contact set (connection or disconnection of a contact pair) can be made visible. Another Column DC of yellow LEDs is used to display value errors. A pair of light emitting diodes CS of green or red Color indicates the correct or inaccurate setting of the shift travel. Finally, show two light emitting diodes IL of greener or red color to indicate whether individual contact springs are shorted to ground or not.

The electronics part 3 also has four fields 45 for checking the response behavior of the relay, in each of which four changeover switches are provided. A switch with two positions M and A is used to or deactivation of the field. A light 46 indicates whether the field is switched on. Two changeover switches with three switch positions 1-3-5 or 2-4-6 are used to switch the current to two relay connections, the pairs "homologous positions the changeover switch to the supply voltage connections

909607/08 5 3

(Fig. 3) correspond to the control coils of the relay; in fact, each relay can have up to three control coils 34, each controlling a different set of contacts. A toggle switch with two positions F and NF defines the conditions of the test fixed on responding or not responding. The response of the relay, i.e. the production and / or the release of a galvanic connection by mutual approach or removal of the contact springs, must for a certain minimum current be ensured in the control coil, which is also called the response current. The failure of the relay, i.e. insufficient armature attraction to operate the contacts results at a maximum current value of is also called non-operating current and at which the relay should not yet change the switching state.

A red lamp 47 indicates the error of the response behavior of the relay defined in this way, while on green light 48 indicates that the relay has no fault in this regard.

In a further field 50, the electronics part has four coding wheels 51 for setting the response current or of the inoperative current in a range of 0 to 200 milliamps in 0.1 milliamp steps (programmed power supply). There is also a in this field Measuring instrument 52 for current and voltage display, a selector switch 53 for current or voltage, connection sockets 54, a On-off light 56 and a control button 57.

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Several pairs of light emitting diodes 60 provide a global display of the controls carried out and a pair of lamps signals the overall result of the test. Finally, pushbuttons 62 and 63 can be seen on the electronics part, from the former enables manual operation of the test device through separate and independent control of all test devices of the electronic part 3, while the key 63 the sequence of all test operations according to an automatic cycle enables.

The contact sets are differentiated according to the combinations of the various contact set types that make them up get together. It is therefore beneficial to use the contact sets to be identified by numbers. One differentiates little more than a few ten contact set types, so that two decimal digits (Tens and units) are sufficient for their identification.

The table according to FIG. 4 shows an example of the structure of the various contact set types and the identification number for each type, where the tens and units are used as the coordinates of the table and the table fields specify the structure of the contact sets. For example, the contact set with the identification number 87 consists of contacts TR, RT and R.

The allocation of the identification number is chosen so that the tens digit represents the number of contact springs in a set. For example, the contact set 87 contains three contact springs in the changeover contact TR and three contact springs in the changeover contact RT and äwei contact springs in contact R. With this choice you can

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depending on the "values", the laws for establishing and breaking a contact can be defined. Every measurement which does not comply with these laws is displayed as an error. For this purpose, one defines the in the form of equations Conditions for the establishment and interruption of a galvanic connection between the contact points of the contact springs depending on the "values" defined for the various contact types. These conditions are

fulfilled during the part of the movement of the mobile needle defined by the "values", depending on the type of contact the "values" are divided into plague areas or mobile areas between the fixed areas.

The state of a normally closed contact R in the first phase of the switching path, that is to say as long as the galvanic connection still exists, can be seen on the basis of FIG. The two contact springs LA and LB of a normally closed contact R can either be galvanically connected to one another (rest state) or not connected to one another (working state). The transition from the rest state to the working state must take place for a maximum displacement path of the mobile needle 22, which is checked by a control value of the rest state of the contact pair R, this control value being worked out by suitable logic circuits of the electronic part and, for example, 0.2 millimeters starting from the beginning corresponds to the switching path. This control value therefore limits a fixed range of the switching path between 0 and 0.2 millimeters. The switching state (EC), which is indicated by the contact R in the idle state and during the

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first part of the switching path between 0 and 0.2 millimeters is taken, can be indicated by a symbol a of the two-valued algebra, which has the logical value 0, while the galvanic interruption of this pair of contacts beyond this switching path part, the logic value "1" for results in this symbol. So one can write for a contact R in the first phase (PhI, Fig. 5), a = 0 - ^ EC.

From FIG. 5, the same observation can also be made for a normally open contact T in the first phase of the switching path derive, i.e. as long as there is no galvanic connection.

The two contact springs LA, LB of a contact pair T each determine a different switching state if that Relay is at rest or in working position. The transition from the switching state of galvanic isolation (ER) to the switching state galvanic connection (EC) must be achieved for a switching path of the mobile needle 22 of twenty hundredths of a millimeter this control value is called cta.

One can therefore say that a normally open contact T in phase 1 is subject to the following condition: a = 0 - > ER.

In the second phase of the switching path of the movable needle, the switching state change for a switching path is Checked needle 22, which is, for example, 38/100 millimeters (value etc). After this postponement, it is imperative the new switching status must be reached.

The two parts of the switching path before and after the limit value of 38/100 millimeters are determined by a logical Symbol c denotes the state 0 for the first part

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of the switching path and state 1 for the second part. Therefore, a normally closed contact is designated in phase 2 with c = l - »· ER and a normally open contact T with c = 1 - * - EC.

The table of FIG. 5 shows the precise states of the galvanic connection or separation of the contact pairs R and T for the control values assigned to these contacts, the states being displayed on the LEDs EL of the field 40 will.

The fixed areas PF in the first phase (PhI) and in the second phase (Ph2) are designated as PFl and PF2 » the end of the switching path is indicated with FC.

Similar considerations can be made for contacts RT in connection with FIG.

A contact RT (or a contact TR) has three contact springs IA, LB, LC, the first and second of which are normally closed R and its second and third springs form a normally open contact T. Only the second contact spring can move and the transition from contact R to contact T occurs in three phases. The first two contact springs are in the first phase connected to each other and the third spring not connected. This phase lasts during a fixed range PF1 of up to 20/100 millimeters. In a second phase, all three contacts are galvanically isolated from each other · this phase is a mobile area PMx that lasts 11/100 millimeters within a Feötbereich PF2. Is in a third phase the first contact spring is galvanically isolated and the other two are connected to one another. This fixed area PF3

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lasts from 58/100 millimeters to the end of the switching path.

The middle area of 11/100 millimeters, during which the three contact springs are not in contact with each other

PM

is called the mobile area because it is in a shift interval the movable needle 22, which is limited by the control values cta = 20/100 and cte = 58/100. The two parts of the switching path on either side of the value cta are identified by a logical symbol e, which denotes the Assumes state 0 in the first part and state 1 in the second part of the shift travel.

For a contact TR, the first phase is the same as that at a contact RT. In the second phase, all three contacts are PMyvon with each other during a mobile range 21/100 millimeters connected. In the third phase, the first contact spring is galvanically isolated and the other two are galvanically connected to each other, during a fixed area PF3 that extends from 68/1OO millimeters to the end of the Shift travel is enough.

The mobile range of 21/100 can be shifted in one interval the mobile needle 22, which is limited by the control values cta «20/100 and ctf = 68/100. The two Parts of the switching path on both sides of the value ctf are identified by a logical symbol f, which indicates the state in the first part of the shift path and state 1 in the second part of the shift path.

The table shown in FIG. 6 gives the correct switching states of the contacts RT and TR for the control values

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of these contacts. The fixed areas in phases 1, 2 and 3 (PhI, Ph2, Ph3) are identified with PFl, PF2 and PF3 for the Contacts RT and PFl, PF2 or PF3 for the contacts TR

Prepare the ^vy
designated. The mobile contacts RT and TR are through PM

and PM respectively.

The diagrams in FIG. 7 show the fixed areas PF, the mobile areas PM and the logical states EC for the galvanic connection and ER for the galvanic separation of the contact pairs according to the displacements of the movable ones Needle regarding the control values ct. The zone marked with oblique lines is a tolerance range in which the contacts R or T can assume either of the two possible states ο

If a contact set contains several contact types, then a contact pair T is furthest away from the magnetic circuit, whereupon contact pairs R, RT and finally TR follow in the immediate vicinity of the magnetic circuit »

A contact set can have a maximum of eight contact springs LA, LB, LC, LD, LE, LF, LG, LH, the spring LA dem Magnetic circuit is closest.

The states of the galvanic connection and separation of the contact springs LA to LG are shown from bottom to top in the Column EL of the light-emitting diodes is displayed in field 40 of the electronics part.

The elements given above make it possible. Equations set up the logical states of the galvanic connection and separation of the contact pairs of a contact set

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for each pair of contacts depending on the
Number of the contact set and the control value, as well as for
the different contact types R, T, RT, TR.

As examples, the logical equations for CLA, CLB, CLC and RLA, RLB, RLC are given below, the states of galvanic connection and separation of the three first contact springs LA, LB, LC of any type of contact
Define contact set. The person skilled in the art can readily understand the corresponding logic circuits from these equations.
CLA = äxo + c 21 + a * 21 + c42 + a42 + c63 + a83 + c84 + ä

• (X5 + 86 + 87 + X8 + X9); CLB = ^ a (20 + 40 + 60 + 80); + 90 + c21 + 5 $ 1 + c42 + ä42 + c63

+ ä83 + cX4 + ae (X5 + 86) + 87 + X8 + X9) j CLC = [ä90 + e9O + c4l + Ü41 + c82 + a82 + cX3 + cX4 + e ·

. (X5 + X6 + 87 + X8 + X9) J '2Xj
RLA = c90 + ä84 + a21 + c21 + c42 + ä63 + c83 + e (X5 + X6) + f-

■ (87 + XB + X9 + 90) + 542;
RLB = c90 + ä84 + £ 21 + ss21 + a42 + c42 + a63 + c83 + Dl

• [X5 + 86j + D2 · [87 + X8 + X9 + 9θ] \
RLC = c90 + e41 + c4l + a82 + c82 + aX3 + a (X5 + X6 + 87 + X8

+ X9 + 90):
It means:

CLA - galvanic connection of the contact spring LA
RLA - galvanic separation of the contact spring LA
ä - state 1 between 0 and 20/100 millimeters (Fig. 7)
XO - number of the contact set with the last digit 0 and one

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- 23 -

Any tens digit (e.g. 20, 40, 60, 80, 90 - Fig. 4). This term is used to refer to the first two contact springs LA and LB of a contact pair R or TR describe.

c - in state 1 is between 38/100 millimeters and the end of the switching path (Fig. 7).

- is the first contact spring LA or the second contact spring LB of a contact pair T of the contact set 21 * - denotes the number of a contact set, the ones digit 1 and the tens digit not-2, namely the first contact spring LJi or the second contact spring LB of a pair of contacts R.

X5 - denotes the number of the contact set with the units digit 5 and any tens digit, e.g. 35, 65,

aX5 - designates the galvanic connection of the contact springs LA or LB of a contact RT in the first phase (Fig. 6).

eX5 - denotes the state of the galvanic connection of the contact springs LB or LC of a contact RT in the third Phase (Fig. 6).

2X ~ is the suppression of the control of the state of the galvanic Connection in the circuits defined by the equation of the third contact spring when the to

The controlling contact set contains only two contact springs, i.e. the contact set is 20 or 21 (Fig. 4)

c90 - denotes the contact springs that are in the idle state of the Contact set No 20, 40, 60, 80 in the state of the galvanic

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niche separation after 38/100 millimeter shift

of the mobile needle
Dl - denotes a failure of the mobile area of one

Contacts RT
D2 - indicates a failure of the mobile area of a contact TR.

In the equation for CLB of the second contact spring, the symbols of the logical state are not, as usual the control values next to the numbers of the contact sills 90, 87, X8 and X9. This is because all of these numbers have a contact TR, the second contact spring LB of which is permanent is in the state of galvanic connection (with the first contact spring in phase 1 and with the third contact spring in phase 3).

The structure of the logic circuits will now be described by way of example for the equation CLA. The first both terms of this equation are implemented by logic circuitry of FIG logical states depending on the contact set numbers and determine the control values. The contact set number will be on a pair of coding wheels 41 of the electronic unit, i.e. the tens digit on a tens coding wheel RCD and the ones digit on an RCU one's coding wheel. The term XO is used in an AND gate P1 is formed, the first input of which is connected in parallel to all positions 0 to 9 of the decimal coding wheel RCD Diodes DO to D9 and its second input are connected to the position of the Einerkodierrads RCU. The member Pl lie-

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So produces a state 1 on the output side, if on the encoder wheels the contact set number 00 or! 0 or 20 or 30 ... or 90 has been set. The term aXO is used in a NOT-AND gate P2 is formed, the first input of which is connected to the output of the element Pl and its second input to the controller of the logical state ä "= l of the control values cta connected is »The state 0 at the output of this element denotes the term aXO. The term 21 of this equation is generated in an AND element P3 with two inputs, which are connected to positions 2 and 1 of the tens and units encoder wheels are connected. The term c21, which links the contact set number 21 with the logical state c = 1 of the control value etc, is formed in a NAND gate P4, which is connected to the Output of the element P3 and is connected to the control for the state c.

As FIG. 9 shows, the complemented values aXO, c21 ... etc. are given to inputs of NAND gates P10 and PII (FIG. 9) which control an OR gate P12. This element supplies the binary value CLA at the output during the time in which the control value in question shows state 1. A state 1 at the output CLA means that the first contact spring LA of the contact set is in the galvanic connection state.

The logic circuits for the equations for the other contact springs LD through LH of a contact set become trained accordingly.

The logic circuitry for equation RLB will now be discussed with reference to FIG. On the description

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the equation RLA is omitted, since the equation RLB of the second contact spring not only the states of the galvanic Shows separation in the fixed area with respect to a contact R or T, but also the states of galvanic separation of these Contact springs if they belong to an RT or TR contact. In this way you can also identify errors in the mobile area.

The theoretical states of the galvanic separation of the contacts R or T are now examined. The terms 90, 84, 21, ... 83 determine the contact set numbers in equation RLB pertaining to the plague areas. These terms are connected to the first inputs of AND gates P20, P21, P22 ... P27 and come from the outputs of AND gates corresponding coding wheels such as the elements P1 and P3 of FIG. 8. The logical states c, a, a ... c of the control values etc and cta are connected to the second inputs of the AND gates P20 to P27 applied. The outputs of these elements are connected to a common via NOT-OR elements P30, P31 and P32 NOT-AND-gate P35 led. This link generates at the output the signal RLB with the state 0 when all circuits are in the idle state. In fact, the links P20 to P27 provide a state 0 and the elements P30 to P32 a state 1. If one of the elements, P21 for example, is activated (more logical State 1 at its inputs 84 and a after setting the number of the contact set and occurrence of the control value) , then the output of the element P30 switches to the state 0 and the element P35, its other inputs are in state 1, supplies a state 1 at the output RLB

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during the duration of state a = 1. The duration of the state at output RLB corresponds to the theoretical duration of the state the galvanic isolation of the contact spring LB.

The state ä of the control value cta lasts for 20/100 millimeters of the switching path of the contact spring 12

Contact T in the first phase (see Figs. 4 and 5). The inputs C21 of the elements P20 to P27 relate to contacts R or T with two contact springs.

The assignment of the errors of the mobile area to contact sets, the contacts RT or TR, will now be explained exhibit. The inputs C31 relate to contacts with three contact springs. The logical states of the terms X5 or 86 for the designation of the contact set for which the first three contact springs form a contact RT to the first inputs of an OR gate P40, which controlled the gate P35 via a NAND gate P41. The logic states the terms 87 and X8 for the designation of contact sets, the three first contact springs of which form a contact TR, are given to two inputs of an exclusive OR gate P42 via inverters II and 12. The logical ones become accordingly States of the terms X9 and 90 given to two inputs of an exclusive OR gate P43 via inverters 13 and 14. The exits the elements P42 and P43 lead to a NOT-OR element P44, which controls the element P40 via an inverter 15. As long as no contact set for contacts RT or TR is set on the coding wheels is, the inputs C31 are in the logical state as are the elements P42, P43 and P40, while the element

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P 44 is in the logic state 1. A mistake of the mobile Area is indicated by the logical state 1 at the DPM input of the P41 element.

The setting of a contact set number on the coding wheels corresponding to a combination of states at the inputs C31 causes a state 1 to be received at the input, whereby the output of the element P40 changes to state 1. Da3 element P41 remains in state 1 as long as there is an error in the mobile area is not displayed at the DPM input. if but this error appears, then the element P4i_ a state 0 to the element P35, whose output RLB to I passes over, which means a theoretical state of galvanic separation of the second contact spring LB. This theoretical State enables the RT or TR contact compared to the actual state of the second contact spring Display of an error in this contact spring.

That supplied by the link P44 over the connection PTR Signal indicates that a contact TR is present on the logic circuits for the switching path control according to FIG.

The determination of errors in the mobile area will now be explained with reference to FIG. II. A NOT-AND element P50 with three inputs is connected to the first three contact springs LA, LB and LC of the contact set to be checked. The output of this element P50 is to a first input of a NAND element P51 and to the first input an AND gate P52 and connected to the data input C of a programmable counter CRl. A second entrance

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of the member P5 i is at the input LB of the member P50 and on first input of an AND element P53, the output of which is applied to data input B of counter CRl. The exit of the element P52 is connected to the data input C of a programmable counter CR2. The second entrances to the Elements P52 and P53 are controlled by an inverter 110, whose input is connected to a contact ca of a switch relay, not shown, this contact also is performed via a connection W to the data input B of the counter CR2. The contact ca can either be earth potential (EIC position) or a positive potential (E2C position) and forms a value scale switch CEC. Of the The input SPD is received from the linear transducer 11 with a signal pulse each time the mobile needle 22 is moved 2/1000 millimeters applied. These signals reach the clock input of a J-K flip-flop Bl, to a NAND element P54 and via an inverter 111 to the counting input EC of the counter CRl. The output of the element P51 is directly connected to the zeroing input RZ of the flip-flop B1 and connected via an inverter 112 to the zeroing input of the two counters CR1 and CR2. The output Q of the flip-flop Bl controls the element P54, the output of which goes directly to the input L for data entry of the counter CR2 and via an AND gate P55 to the input L of the counter CR1. The output R of the Counter CRl is connected to the second input of the element P55 and to the counting input EC of the counter CR2, its output R leads to the clock input H of a further trigger stage B2.

009807/08 5 3 ./.

The output Q of the flip-flop B2 is connected to a first input of a NOR gate P56, the other one A signal is supplied to the input via a connection VD, which signal is the output signal of the flip-flop B2 after a shift of the pen by 70/100 millimeters, i.e. after a shift that has the maximum value ctfl = 68/100 millimeters easily exceeds. This signal comes from a decimal decoder for binary signals, which is transmitted by the transducer 11 and indicate the displacement of the movable needle of the relay. This decoder also plays a role in the Formation of the control value signals, as will be explained further below. The output of the element P56 (connection DPM) controls the element P41 from Fig. 10. The inputs J of the trigger stage Bl, A of the counters CR1 and CR2, D (data) and P (default setting) of flip-flop B2 are permanently at positive potentials (logic state 1). The inputs K of the flip-flop Bl and D des Counters CR2 are permanently connected to earth (logic state 0).

The value scale switch CEC and the links P52 and P53 program the various dates for the programmable ones to control the duration of the mobile area Counters CR1 and CR2, depending on which of the two value measures is selected, the two value measures being two Define tolerance limits for checking the values of the mobile areas. The diagrams in Figure 12 show the two Values eic and e2c as well as the signals xlip. yl and x2, y2 the mobile areas of the contacts RT and TR for each of the two scales. The EIC position of the CEC switch (Fig. 11)

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corresponds to the standard of values eic

It is explained how an error in the mobile area is discovered in a contact RT on the scale of values eic will. This scale defines e.g. for a contact RT an area xl of 11/100 millimeters, which is in the IßäErvall ctal ctel movable, i.e. between the values 20/100 and 58/100 millimeters (Fig. 12). The three contact springs must be in this area LA, LB and LC be in the state of galvanic isolation, <3a the springs LA and LB are in phase 2 (Fig. 6) -normal contact was opened while the springs LB and LC remain in the state of galvanic separation for 11/100 millimeters have to. As soon as the contact springs LA and LB are galvanically are separated, the element P50, whose three inputs are in the state 0, supplies a state 1 to the data input D of the programmable counter CSIo

The element P53 changes to the state 0 on the output side and the number 5 becomes binary at the inputs A to D of the Tens counter CRl marked, which is thus programmed to 5. The element P52, whose two inputs indicate the state 1, marks the input C of the sixteen counter CR2, which is thus also programmed to 5

The flip-flop Bl _ff whose output Q to the state 1 under control of the gate P51 arrives, stores the About = transition of the contact spring LB in the state galvanic separation "The member P54 opens after the positive edge of the eröten arriving at the input SPD signal the tilting of the tilting stage Bl and enables the input of data A to D (digit 5 in binary form) via the element P55 in the programmable

IÖI807 / 08S3

2832352

Counter CRl, which is thus brought into the counting state 5 and then in time with the negative edges of the signal SPD up to Counting step 9 - reached, i.e. five steps further, before a negative pulse via output R to input EC of the counter CR2 delivers. The counter CR2 counts from step 5 to step 15, i.e. 11 steps and then delivers a negative pulse via output R. the flip-flop B2, which is switched on in this way. The element P56, the input of which is VD 1, remains in state O.

After the counters CR1 and CR2 five or eleven steps under the effect of the incoming signals via SPD according to the Displacement of the movable needle by 2/1000 millimeters each have continued counting, the flip-flop B2 switches after one Displacement of the movable needle of 0.002 χ 5 χ 11 = 0.11 mm starting from the transition of the three contact springs LA, LB and LC to the state of galvanic isolation.

If the mobile area xl is less than 11/100 millimeters is then the counters CR1 and CR2 through the elements P50, P51 and? Set to zero and the output Q of the multivibrator B2 remains in state O.

When the switching path reaches 70/100 millimeters, then the BCD decoder provides for the displacement of the movable ones Needle a pulse of the state O to the input VD of the link P56, which supplies a state 1 at the DPM output. This indicates a mobile area error.

If xl stays below 11/10, then the two will Counters CRl and CR2 automatically reset to counting step 5 and start a new cycle, etc. The display

909807/0853

an error of the mobile area is given when the output Q of the flip-flop B2 is 0 and when the input VD is the State 0 occurs.

The determination of an error in the mobile area with respect to a contact RT in the value scale e2c will now be explained. In this case the mobile area is x2 = 13/100 millimeters (Fig. 12). The waiting scale switch CEC is located is in the position E2C and supplies the states 1 and 0 to the connections W and Z, so that the counter CRl in the state 5 and the counter CR2 enters state 3.

The counters work similarly to the previous case and allow five counting steps to be counted (10-5) or thirteen counting steps (16-3). So the displacement of the movable needle of 0.002 χ 5 χ 13 = 0.13 mm can be measured will. The mobile area errors are displayed as in the previous case.

Next, an error of the mobile area with respect to a contact TR in the value scale eic will be described. The mobile area yl is equal to 21/100 millimeters. The CEC switch is in the EIC position. The element P50 detects the moment in which all three contact springs LA, LB and LC are in the state of galvanic connection (state 1). The element P50 in state 0 and the elements P52 _t P53 in state 1 program the presetting of the tens counter CR1 to counting step 3 and the sixen counter CR2 to counting step 1. The counters CR1 and CR2 therefore advance by 7 and 15 steps and determine such a displacement of the mobile needle by 0.002 x7xl5 = 0.21mm corresponding to the value yl. The errors are displayed as in the previous case.

909807/0853

- 39 - 2832S52

Next, errors of the mobile area with respect to a contact TR in the value scale e2c will be explained. Of the mobile area y2 is 23/100 millimeters. The switch CEC is in position E2C. The counters CRl and CR2, which on the counting state 1 or 3 are preset, proceed by 9 or 13 steps and thus measure a shift in the movable needle by 0.002 χ 9 χ 13 = 0.23 mm, which is the value of y2 is equivalent to.

Now the logical states a «c, e, - £ the control values eta, etc, cte, ctf (Fig. 13). as The example shows the structure of the circuits for determining the state a of the control value eta in the value scale eic (ctal = 20/100) or in the value scale e2q (cta2 = 23/100 mm). Every 1/10 mm displacement of the movable needle becomes binary counted in a counting decade DCl of the transducer 11 and offered in decimal form to a BCD decoder DCOl. In the same way a BCD decoder decodes those coming from a counting decade DC2 that indicate the hundredths of a millimeter shift Decimal digits.

The output of the decimal value 2 of the decoder DCOl is connected to a NOR element P60, the output of which leads to input J of a JK flip-flop B5. The PSO element is controlled by a NOT-OR element Pol, which itself is controlled by a the two NOT-OR gates E62 and P63 is controlled «Di® The inputs of the element P62 are to the output of the value 0 of the decoder DC02 or to the connection W of the switch CEC (Fig. 11) connected. The inputs of the element P63 are on the output of the value 3 of the decoder DC02 as connected to the connection Z of the same switch. The entrance K

Lö§8Ö7 / 0SS3

the trigger stage B5 is connected to ground potential and the clock input H is connected to the connection IC (Fig.11), through which he receives the counting pulses for the displacement of the movable Needle is fed in LOOOths of a millimeter. The output Q of the flip-flop B5 supplies the logical value a = in the idle state and the logic state ä = 1 via an inverter 115.

The formation of the control value is now ctal = 20/100 Millimeter explained. The switch CEC is in the position EIC, so that the elements P62 and P63 receive the state 0 via the connection W and the state 1 via the connection Z, respectively. The element P63 remains blocked, regardless of the status of the output 3 of the decoder DC02 and supplies a value 0 to the corresponding input of the element P61. The link P62 is opened during the decoding of the digit 0 (output 0 of DC02 in state 0) and supplies a state 1 to the element P61, which is in state 0 during this decoding. The element P60 remains blocked as long as there is a shift in the movable needle by 2/10 mm indicating binary digit not yet

DCOl ^
has indicated / 'at output 2 of the decoder. The element P60 is opened when the outputs 2 of the decoder SCOl and 0 of the decoder DC02 indicate a state 0 at the same time. Then the two inputs of the element P60 are at 0 and the element supplies a state 1 to the input J of the flip-flop B5, so that it switches over when a clock pulse arrives via the connection IC. The output Q of this flip-flop B5 then shows the logic state 1 and the occurrence of this state a = 1 indicates that the control value ctal has been reached with a displacement of the movable needle of 20/100 rasa since the start of the switching movement.

0O98O7 / O8S3

..- ".- - 41 - 2832352

It will now be explained how the control value cta2 = 23/100 mm is formed. The switch CEC is in position E2C. Element P60 remains blocked (state 1 at input W) and element P63 (state 0 at input Z) opens when output 3 of decoder DC02 is in state 0 when the digit 3 is decoded. This means a shift of the movable needle by 3/100 mm. The term P60 opens when the decoder DC02 numeral 3 decrypts "after the decoding of the"'Paragraph 2 in the decoder Dcol, whereby a displacement of 2/10 mm is indicated. The flip-flop then switches B5 and displays the control value corresponding to CTA2 a displacement of the movable needle by 23/100 mm.

The controls of the switching path will now be explained. The switching paths in the contact sets are different, depending on whether the contact sets are composed only of contacts R and T or at least one contact RT or TR included. The table in FIG. 14 shows in 100ths of a millimeter the permissible switching path tolerances for the different contact types and for the two value standards eic and e2c.

The logic circuits shown in FIG. 15 provide a square pulse of one of the allowable shift travel range corresponding length depending on the type of first contact of the contact set, i.e. on the one hand the number of the contact set and on the other hand the selected value measure. These circuits also include, in particular, the decoders DCOl and DC02, which are already used in another context for determination of the logical states a to f of the control values are used have been. These circuits also contain three groups

- 42 - 2832352

of logic elements GlP, G2P, G3P, the inputs of which to the outputs 5 to 9 of the decoder DCOl according to the fan of the displacements are distributed in tenths of a millimeter. Each group of logical members has an input stage a pair of connected NOR gates, an intermediate stage with a pair of AND gates and an output stage with a NOT-OR element.

After setting the contact set number, the Presence of a first contact R or T the coupled inputs of the input stage of the group GlP via a state reported, which is supplied to one of the connections Xl, X2 + X3, X4 + 90 to an OR element P65 or to a NOR element P66 will. The presence of a first contact RT is indicated by the coupled inputs of the input stage of the group G2P a state O is reported, which is supplied via the connection X5 + 86 will. The presence of a first contact TR is indicated by the coupled inputs of the input stage of the group G3P a state 0 is reported, which is applied to the connection PTR (Fig. 10).

The shifts are detected in hundredths of a millimeter by two NAND elements P67 and P68, which are sent to the Outputs 0 to 4f5 to 9 of the decoder DC02 are connected. The output signals of these elements are applied to the intermediate stages of the groups GlP, G2P and G3P.

The outputs 3 and 4 of the decoder DC02 are also connected to the element P68 via two OR elements P69 and P70, the over the connection W from the value scale switch CEC controlled. This toggle switch also overrides

909807/08 ^ 3

the NOT-OR gates P71 and P72 the connection between the member P67 and the groups GlP, G2P and G3P. The element P72 is in turn from the output O of the decoder DC02 via a Inverter controlled.

The groups GlP, G2P, G3P are connected on the output side to a NAND element P73, the output of which is CC (switching path control) at the end of a switching path supplies a signal of the state which indicates a switching path error if the switching path is either less than the minimum permitted value or greater than the maximum permitted value. If the switching path is within the permissible limits remains, then the element P73 delivers a state 1 and thus indicates that there is no switching path error.

The display of an error or the absence of errors in the shift travel will now be explained. This ad is through Circuits caused, which are shown in the lower part of FIG. This display becomes an at the end of the FCY cycle Cycle distributor DTC controlled, the counter contains the step-by-step sequence of operations such as holding the relay, reverse Connection, lowering of the probe pins, supply of the relay with current, control of the current strengths for tightening and the inactivity of the relay, control of the switching paths, the Short circuits to ground and the control values.

The start of a cycle of the distributor DTC is triggered by actuating a receding button DCY. And then stored via a monostable multivibrator BMS in a bistable multivibrator MCY, soft a clock HLl des Distributor starts. In addition, the BMS from the flip-flop

§09807 / 0813

delivered impulse the zero position of the cycle distributor DTC. The connection CC is via an inverter to input J. a switching path storage stage MDC of type JK, the input K of which is connected to earth. The output Q controls via an inverter a light-emitting diode DC, the cathode of which is at the positive potential of the power supply and which, as a red light, indicates a switching path error indicates. The output Q of this flip-flop controls a light-emitting diode NDC green via another inverter, whose anode is at positive potential via a resistor and whose cathode is grounded, this diode being absent of a travel error when it lights up.

Before the end of the cycle, the distributor DTC sets the flip-flop ICDC via a signal supplied to the rz input to zero and controls the operation of the relay.

If no switching path error is found, then the connection CC is in state 1 “The input J of the multivibrator MDC is therefore at zero and the start of a fast pulse generator HL2 in the distribution position CCM (control of the switching paths, values and ground error) has no effect on the multivibrator MDC, whose Output Q continues to show the value 0. Therefore only the diode lights up NDC green on «

However, if there was a switching path error, then the connection CC is in the state O ₀ The input J of the flip-flop MDC shows the value 1, so that this flip-flop switches with the first edge of the clock signal HL2 and the output Q goes into the state 1, Now only the light-emitting diode DC is excited, the red color of which indicates a visual path error «, The transmission of the

θ Ö 8 8 0? / 0 8 S 3 ./.

Signals that indicate the absence of a switching error are made via the PNDC connection when output Q of the Flip-flop MDC has reached state 1.

At the end of the distribution cycle, the clock generator HL2 is stopped and the trigger circuit MCY is reset; in addition, the clock HL1 is stopped. The clock generator HL2 supplies its output pulses hl to the clock input H of the flip-flop MCC via a NOR element which is controlled by the output Q of a flip-flop MCE. The clock input H of this flip-flop is connected via a connection ce to the output of a circuit ELR of the single circuit CTLA for suppressing bruises. The flip-flop MCE can therefore save the change of state of the lowest contact spring LA of the contact set and report this change via the output Q and the connection cem to the circuits to control the attraction or non-attraction of the relay (Fig. 17).

The display of a ground fault will now be explained. This uses a phototransistor PHM whose input is connected to the input ARM of the display circuit and whose output leads via an inverter to the input J of a memory flip-flop for ground faults MDM. A green light-emitting diode NDM, the cathode of which is connected to earth and the anode of which is connected to the output Q of the multivibrator MDH via an inverter, indicates the absence of a ground fault when it lights up.

A red light emitting diode DM, the anode of which is positive Potential and the cathode of which is connected to output Q of the multivibrator MDM via a resistor indicates a ground fault

§09807 / 0853

when it lights up. A ground fault is present if one or more contact springs of a contact set relate to the relay chassis is poorly insulated. Since the chassis is grounded, the contact springs of a contact set are parallel connected to the ARM input. If at least one contact spring is connected to ground, the phototransistor PHM and PHM conducts the flip-flop MDM receives a signal 1 at input J. Since this flip-flop before the start of the distribution cycle together with the flip-flop MDC was set to zero, the end of the distribution cycle controls the start of the HL2 clock and the switchover the multivibrator MDM, the output Q of which changes to state 1, and the light-emitting diode DM to display a ground fault turns on.

If there is no ground fault, the phototransistor PHM remains blocked and the multivibrator MDM does not switch over, when the clock HL2 is started. The output Q of the multivibrator remains in state 0 and the diode NDM continues to light and indicates that there is no ground fault "

The display of contact spring errors will now be explained. “A contact spring sensor is present when the switching state of a contact spring does not correspond to the galvanic connection or separation state that this spring assumes depending on the type of cycle to which it belongs and the type of contact to which it is assigned. Each contact spring La, LB. _ao LH of a contact set has its own control circuit CTLA, CTLB. ». CTIE. The inputs CIA and HLä of the circuit CTLA are with the logical Sastäaden gaaäS cten theoretical states

§09807 / 0053 ./.

, -47- 2832352

applied to the galvanic connection or separation, which the contact spring LA would have to assume according to the control value which is assigned to the respective contact type. The inputs CLA and RLA are connected to inputs El or _ö E2 of a logic comparator CEL, the third input E3 of which receives the logic states corresponding to the actual switching state of the galvanic connection or separation that the contact spring LA assumes in the course of the switching path. These states are transmitted to the input E3 of the comparator via the input LA, a phototransistor PHA and a bounce suppressor ELR.

The logical states of the galvanic connection or separation of the contact springs LA, LB, LC, LD ... etc. are detected in parallel by two circuits CTLA-CTLB, CTLB-CTLC, CTLC-CTLD etc. For this purpose, the diodes of the phototransistors of the two circuits of a pair are connected in series when the contact springs controlled by them are in galvanic connection with one another via their contact point. So if the first two contact springs LA and LB of a contact set belong to a contact R or a contact RT or TR, then the relevant contact springs are in galvanic connection during the first phase of the switching path the anode of the phototransistor PHB is at positive potential, a circuit is formed via the two phototransistors and the contact springs LA and LB, which are galvanically connected to one another, (see circuit shown in dashed lines) _a Therefore

- 48 - 2B32952

conduct the two phototransistors simultaneously during the first phase of the switching path, in order then to block together, as soon as the galvanic connection has been interrupted. The moment of interruption is different, depending according to whether the contact springs belong to a contact R, RT or TR, according to the different control values that these Contact types are assigned »

When the cycle distributor DTC arrives in the control position CCM for the control values, the switching paths and measurement errors, it causes the relay to pick up and the high-speed clock HL2 (100 IcHz) to start at the same time. As long as the logical state of the theoretical connection of the contact spring LA (state 1 at input CLA is also at input El of CEL) matches the logical state of the actual connection of this contact spring (state 1 at the input of CEL 'via input LA, the phototransistor PHA and the bounce suppressor ELR), the comparator CEL provides a state 0 to the J input of the flip-MLA, which does not change so that its Z stand _u.

If the contact springs LA and LB interrupt their galvanic connection before the assigned value is reached, then Depending on the case, the input El or E3 of the comparator enters the state 0 and the comparator indicates this with a state at the input J of the flip-flop MLA «, the latter thus also switches the next pulse of the clock HL2 and the output Q goes from state 1 to state 0 and energizes a »red light-emitting diode DLA, which indicates a fault in the contact spring LA. The organs ELR and CEL form a condition analyzer ALA for

909807 / 08S3 ./.

- 49 - 2832852

the state of the spring LA. The same process results in parallel for the circuits CTLB and ALB, which control and analyze the condition of the contact spring LB.

If a state of galvanic connection follows a state of galvanic isolation (e.g. a normally open contact), Then the comparison between the inputs LA and RLA on the one hand, LB and RLB on the other hand takes place according to an analog process in which the actual galvanic separation of the contact spring is indicated by the state 0 at input E3 of the comparator CEL during the first phase and theoretically permissible galvanic isolation through a state 0 at input E2 of the comparator during the theoretical duration of the dem The corresponding shift value of this contact is displayed. A difference between the logical state between the two inputs E2 and E3 leads to a state 1 at the output of the comparator DEL, whereby the flip-flop MLA for storage a contact spring fault is switched on. The visible display of the status of the galvanic connection or The contact spring LA to LH is separated before, during and after the relay is picked up by yellow LEDs VLA to VLH which are activated when the corresponding contact springs are in the state of galvanic connection. Accordingly these diodes, whose anodes are connected to earth, are affected by the output signal of the phototransistor made to glow after an inversion and amplification.

If no contact spring error is displayed on the contact springs of the contact set, then a NOT-ÜND element controls, its inputs to the outputs Q of the multivibrator MLA, MLB etc.

909807/0853

are connected, the control of a green light-emitting diode NDL, which indicates that there is no fault in any of the springs.

Control of attraction or non-attraction of a relay with one or more coils:

A relay can be controlled with regard to its attraction, i.e., that the armature is attracted for a particular Limit value of the current in the control coil wants to ensure or with regard to the non-attraction, i.e. that one is sure The aim is to ensure that the relay does not yet respond at a certain current limit value. The circuits shown in FIG are able to carry out these controls for a relay that has one, two or three control coils that are open are mounted on the same chassis and each have an armature and a set of contacts assigned to them.

Although common relays have a maximum of three control coils have, the device has four logic circuits to control the response or non-response such as CLD1. Each of these circuits is connected to each of the four fields 45 of the electronic part (Fig.l). So you can for example a control of the response and a control of the non-response of each of two control coils of a relay or also three controls of the non-response of each of the three control coils of a relay and one control of the response perform one of the three coils.

The cycle distributor BTC (Fig. 17) has a first one Binary counter modulo 10, oil, whose binary data outputs one Apply BCD decoder Dl, and its counting input EC with

909807/0853 ./.

the signals of the clock HLl are applied. The transfer output RP, of the counter leads to the counting input EC of a
second binary counter C2. The outputs A, B, C, D of this
second meter and its complements result in the distribution step of the operating cycle according to the following plan:

Press the button "Start of cycle ¹¹

Clamping the relay

Rear connection of the relay

Normal power supply

Inversion of the programmed power supply

Control of the first operation with the programmed power supply. Control of the second operation with the programmed power supply Control of the third operation in the programmed power supply. Control of the fourth operation in the programmed power supply Lowering the stylus

Zeroing

Control of the values, switching paths and ground errors

Display of control

The clamping of the relay and the rear connection of the contact lugs of the relay remain during the entire cycle
effective. The electrical circuits for controlling the hydraulic cylinders for clamping and for the rear connection as well as the feeler pins have not been shown here because they
are of the classic type. The operational check is preceded by two control pulses with normal supply voltage (55 V), and
although during steps 1 and 3 of the counter C2.

In the first cycle phase of the distributor DTC (steps
0 to 3 of counter C2) become the pistons for clamping
of the relay and the rear connection operated. During this

09807/0853

- 52 - 2832852

Phase of the counter C2 exceeds each time by one step when the counter Cl has reached the end of counting _o In FIG _o 18 some diagrams are illustrated, among other, the progression of the counters Cl and C2 and the behavior of the critical circuit parts of Figure "17 in the second cycle phase from step 4 of the counter C2, from which the control of the response and / or non-response of the relay can be controlled depending on the programmed power supply of the control coil or »control coils, 3 © ± g © n _o

The IMPORTANT-UM) members CBl, CB2 _o ° CB4 are opened one after the other during steps 4 = 5 "6-7," = 10-11 of the counter C2 and successively deliver a polarity to a first terminal of the relay APBl , APB2 " _oo OÄPB4 ,, which are programmed via their corresponding block BIi, B2 _ooo B4 by means of the code wheels 51 © power supply to the connection lugs of the control coils of the relay to be controlled with regard to its Ännachens and / or non-response ^ fTThe second connections of the relays APBl bis APB4 and the connection of an inversion relay IAP for the programmed power supply are connected to the collector of a power transistor CC & type Ή ^ whose emitter is connected to earth _{or the like}

The base circuit of this transistor is controlled by the outputs 8 and 9 of the Bakoder Dl via ain UHD = Giied FSo "an OR <= member PSl ₄ , an inverter 120 and a general amplifier = inverter AIE. The relay IAP% is controlled by the outputs A, C and D of the counter C2 via HIGES-OHD-Glieäer P82 and P83 in Sorie, an Inverter.-121 and eintssn Vsrstarkksr ΆΜΒ controlledο The member F82 also controls via the

0I807 / 08S3

C and D the element P81 via a HICHT-AND element P84, whose a logical value 1 is permanently applied to one input is ο the control of a relay for switching the power supply, z »B„ APBl, takes place via the element CBl, via a NOT-OR element P9I, an inverter 131 and an inverter amplifier AIIo The element P91 is controlled by a selector SBl of the block 1 in the working position MA as long as this selector supplied ground potential

The inputs cemi, cem2, which are connected to an OR gate P86 _; and cem3 _s, which is connected to an OR gate P87, come from output Q of multivibrators such as MCE (Figo.16), which control the state of the first contact spring of one of the three contact sets of the relay. Depending on whether the relay to be controlled contains one, two or three sets of contacts, the response of the relay by state 1 is only displayed at connection ceml, or at connections ceml and cem2 or connections ceml, cem2 and cem3

At the beginning of a cycle, the MCE flip-flops are switched off. The counter C2 arrives at counting step 4, the member CBl opens and the inverter amplifier All sets the relay APBl undervoltage. At the beginning of step 4 of the counter C2, the counter Cl is in step O. The elements P80 and P81 supply the binary value 1 and thus control the general amplifier == Inverter AIG, which controlled the transistor CCA This transistor then switches the earth potential to the relay APBl, which picks up and in turn the programmed power supply switches to the relay to be examined for response «,

'909807 / 08S3

7 Q

If there is no error _s then this relay picks up _o

The members P86 and PB connected in series ¹ S are connected to the load input of CH of the programmable binary counter Cl "About these members so the message via the Be = drive the relay, d _o h _o taken exactly x the response of the contact set of the coil, which is controlled in block Bl (fexBl, Pig "18}, reported to the binary counter Cl, which then goes over to counting step 8" The elements P8O and P81 now block and the general amplifier inverter AIG terminates the control of the transistor CC.A " This takes the earth potential from the coil of the relay APBl and this and the relay to be controlled drop out "

The counter Cl goes to step 9 and then to step 0 and controls the progression of the counter C2 to the count = step 5ο The decoder Dl, which has determined the transition of the counter Cl to the counting step 0, controls again via the elements P80 and P81 the amplifier AIG and the transistor CCA to _o During step 5 of the counter C2, the element CBl remains open and activates the element P83 _ff which at the same time causes the relay APBl and the relay ΪΑΡ to attract _o The combination of the contacts of these relays causes a reversal the programmed power supply on the relay to be controlled, which drops out if there is no error, _etc.

The counter Cl arrives at counting step 8.- due to the action of the element P87 _o The amplifier AIP blocks and the relays APBl and X&P drop out _o The relay to be controlled also drops out «The counter Cl arrives at counting step 9 and on to counting step 0 and controls the advance of the

909807/0853

J32952

Counter C2 to counting step 6. In this step, the blocking of the member CBl and the opening of the member CB2 to

so control of the block B2, ^ daS in the manner described Coil y and the associated contact set can be checked (feyB2, Fig. 18).

If the relay is examined for non-response, oh «. * When a voltage is applied to the coil ,, for which the relay should not pick up, the counters Cl and C2 advance as in the first phase of the cycle, with the Counter C2 executes one step after every ten steps of counter Cl,

Hunmore it is explained, how a Pelhler is indicated in the response behavior _o The output of the element P91 is on the one hand directly connected to the data input of a trigger stage BIl and on the other hand to the clock input of the same trigger stage via a üHB- ^ lied PlOl, which is connected via a connection ee from the link P87 is controlled o The control input P of this flip-flop stage Ξ11 is on positive polarity via a resistor, on a Essklusi ^ -OR-member Pill and on a control type · = selector SMCl "of the relay, which for the control of the response in position F a logic state 1 at the set input 3? the flip-flop BIl supplies _B while it supplies Krdpotentlal or a state O in a position SiF to control the Hichtansprschens or a state O _o

The output Q of the flip-BIL is in®r to aen data input flip-flop F © Q12 aagesahlossen complementary veer off = Q gear to οχηθώ input "of the link is connected and Pill

at the set input P positive polarity, ie the logic state λ is applied. The / output of the Pill element is connected to a NAND gate P121, the output of which is in turn connected on the one hand to the cathode circuit of a light-emitting diode NDFl of green color and on the other hand to a NAND element P131, the output of which is connected to the cathode circuit of a red light-emitting diode DFl lies. The cathodes of the two light emitting diodes are supplied with positive polarity. The elements P121 and P131 are controlled via an inverter 141 from the block selector SB1.

There is no fault if the relay to be tested picks up twice, the first time after the programmed ones have been applied Supply voltage and a second time after reversing the direction of the current of the supply voltage source »Since the selector SMCl has the position F at the beginning of the cycle, the flip-flop BIl is switched off (Q = 0). The flip-flop stage B12 is also switched off (Q = 1). When the relay picks up for the first time, element P87 delivers a state 1 “The leading edge of the The signal generated by this member causes the switching on of the trigger stage BlIo via the member P10. The second signal of the member P87 due to the second pick-up of the relay causes the switching on of the flip-flop B12. The output Q of B12 goes to 0 and controls the excitation of the light-emitting diode NDFl, the its green light indicates that there is no error. The diode DFl remains off because the element P121 the element P131 locks.

909807 / 08S3 BAD ORIGINAL

However, if the relay only picks up once, then the flip-flop BIl is switched on, but not the flip-flop B12, the output Q of which is via the Pill element (state 0) and the element P121 (state 1) causes the blocking of the diode NDFl and the control of the diode DPI via the element P131, so that the red light indicated a failure of the relay

If the relay has not picked up at all, then both flip-flops BIl and B12 remain switched off and the output Q of the flip-flop B.12 shows the error as in the previous one Case on.

There is no error in checking the non-response before, then the flip-flop BIl is at the beginning of the cycle switched on and the selector SMCl is in the position NF, while the flip-flop B12 is switched off.

If the relay does not pick up due to the If the supply voltage is not responding, the flip-flops BIl and B12 remain in their original state 1 and 0, respectively. The element Pill supplies the state 1, the element P121 the state 0 and the light-emitting diode NDFl shows by its lighting up that there is no error in checking the non-response.

In the opposite case, i.e. if the relay has picked up despite the low voltage supply, the Front of the signal supplied by the element P87 via the element PlOl the switching on of the flip-flop B12, while the Flip stage BIl remains switched on. The output Q of the flip-flop B12 blocks the element P 111, so that the element P121 the state supplies and the LED NDFl blocks. The element P121 is blocked and brings the red light-emitting diode DFl to

Light up o

Finally, it is based on Figure 19 _o checking the anchor system explained on the magnet core. This check is carried out with the aid of a light-emitting diode DER, the light beam of which is directed onto the armature 24 and the core 25 of the relay to be checked. This beam is received more or less strongly by a phototransistor PBT, depending on the installation of the armature 24. The phototransistor controls an HPN transistor TRA, the emitter of which is connected to earth and the collector of which is via a
Potentiometer POT is on positive polarity. The tap
of the potentiometer is connected via an inverter 125 to an AND gate P102, the second input of which via a
Inverter 126 is connected to the output of a NAND gate P103. This element is connected on the input side to positive potential or to the outputs of counting steps 14 and 15 of counter C2. The element P102 is connected to the input J of a system fault storage flip-flop MPL of the type JK
an AND gate P104 connected, which is activated with the counting step 14 of the counter C2. The clock input of this trigger stage
receives the clock signals of the clock generator HLl (connection hll) and the input K is connected to earth. The output Q of the flip-flop controls a NICHP-AND gate P105, while the complementary output Q controls a NAND gate P106. The two elements each control the cathode circuit of a light-emitting diode NDP and DP, the anode of which is at positive potentials. The links P105 and P106
are controlled by an AND gate P107, which in turn is controlled by the inverter 126 and by step 15 of the counter C2
will.

909807/08 5 3

If there is no system fault, the phototransistor PHT remains blocked while the transistor TRA is conductive. Then the inverter 125 supplies the state .1 to the element P102. In step 1.2 of the counter C2, the flip-flop MPL is set to 0 if necessary. Up to and including step 13 of counter C2, element P103 supplies state 1 and inverter 126 supplies state 0. Element P102 remains blocked, and so does element P104.

In step 14, element P103 then supplies a state 0 and elements P102 and P104 supply state 1 and switch on the flip-flop MPL (Q = 1). The counter C2 pauses on counting step 15. Member P103 remains in the state The element P107 supplies the state 1. The element P106 continues to supply the state 1 and keeps the LED DP blocked. The element P105, however, now supplies the state 0, so that the green NDP LED lights up and indicates that the armature has been correctly positioned on the magnetic core.

In the event of a system fault, the phototransistor PHT saturates and the transistor T BA is blocked. The output of the inverter 125 supplies a state 0 to the first input of the element P102, so that it cannot open and the flip-flop MPL is not switched on (Q = 0).

The counter C2 goes to counting step 15 and the element P107 supplies the state 1. Since only the latter of the elements P105 and P106 changes its switching state, the red diode DP now lights up to indicate a system fault. (e.g. canted anchor).

χ χ

909807/0853

Claims (1)

Po ίο 922 D 2 7, July 1978 COMPÄGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL S.A. 12, rue de la Baume, 75008 PARIS, France TEST DEVICE FOR A RELAY WITH / MULTIPLE CONTACT PINS AND CONTROL COILS PATENT CLAIMS iv L. 1 j test device for a relay with / several contact sets and control coils, characterized in that means are provided on the one hand for controlling the relay and for recording the electrical and mechanical states and on the other hand for processing and monitoring these states, the determined values with setpoints, which are typical for each type of relay, are compared in such a way that, by means of switching circuits, the actual switching states of the contact pairs identified by the logical states are compared with the theoretical switching states identified by logical states, depending on the relay type, and the correspondence between various settings and operational controls of the relay is displayed. 2 - test device according to claim 1, characterized in that there is means for recording the the distance covered by the relay contacts are provided. Means for implementing the opening and closing values of the 503807/0853 ORlGiNALlNSPECTED different contact types and for the selection of the scale of values, Means for selecting the contact set number and for generating the theoretical states depending on the number of the contact set and the setpoints, means for recognizing and displaying misaligned contacts and the electrical switching status® a pair of contacts and for displaying switching path errors and shorts to ground, means for recognizing operation the relay contact sets, for switching through and distributing a control current of the programmed current intensity to the control coil or control coils and to display errors in response behavior, and means for storing and displaying system errors of the relay armature on the coil core are provided are. 3 - test device according to claim 1, characterized in that holding means for the relay are provided, which consist of two jaws, one of which is fixed and the other via a hydraulic piston (6) is movable (7). 4 - test device according to one of claims 1 to 3, characterized in that means for Connection of the relay connection lugs to switching and treatment circuits of the device are provided and this means from one mobile, connected via a cable to the device plug, which is arranged so that the terminal lugs of the Contact sets and the control coil or control coils of the relay engage in corresponding contacts of the plug, and that the plug can be moved using a control piston and 9Ö98Ö7 / O853 so it can be connected to the relay to be tested. 5 - test device according to claim 1, characterized in that means for displaying the Switching path of the contacts are provided, the feeler pins (9) have which slide in a support beam (8) and are moved by control piston (10) connected to transducers (11) one unit of stylus-piston transducers per set of contacts, with the piston making contact between the free ends of the stylus and the corresponding free ends of the mobile needles moving the contact sets (l6) enable and the length of the path covered by the needles in digital display fields (36) after actuation of the Relay is enrolled. 6 - test device according to claim 1, characterized in that means for implementing the Values of the different types of contacts and for the selection of the value scales are available, which include in the order - two counting decades (DCl, DC2) in each transducer (H), with which the tenths and hundredths of a millimeter in digital form the stylus displacement can be recorded, - two BCD decoders (DCOl, DC02>, which parallel the binary Received values of the digits indicating the displacement of the probe pen, - logical value discrimination circuits with a first Detector element per measured value for the tenth digit (P60), this element from an output of the tenth decoder 9C98Ö7 / 0853 2832852 as well as by one of the two second detector elements (P62, 1.'6B |> 3) for the hundredth digit, which itself from the decoder for the hundredth digit as well as from one Values scale switch (CEC) is switched, as well as - a memory circuit for the detection of the discriminated Value in the form of a bistable multivibrator (B5) generated by the discrimination circuit is switched on. 7 - test device according to claim 1, characterized in that means for setting the Contact set number and provided for generating logical signals depending on these numbers and the contact value are, the logic signals indicating galvanic connection and / or separation of the contact pairs and these means Have pairs of coding wheels (41) per contact set, one for the tens digit and the other for the ones digit of the contact set number, that the coding wheels mark at least two inputs of a logic circuit with a potential and the logic circuit contains two switching pyramids (Fig. 8, 9, 10) and a first set of the switching pyramids common Members (Pl, P3, ...), which are controlled by the code wheels, that each switching pyramid has three groups of logical Structures contains, namely a first group (P2, P4, ... and P20, P21,. ·.), The converted into logical states by the _ G este be UERT values of the contacts (a, c,. ..) / T a second group (PlO, Pll, and P30, P31, ...), in which the output signals of the first group are concentrated, and a third Group (P12, ... 909807/0853 r - and P35, ...) in which there is a link for each contact of the contact set, the links (P12 ...) of the third group of the first switching pyramid during the switching of the relay the switching status between two contacts by specifying logic signals during the closed state of the contact pair while the links (P35) the third group of the second switching pyramid parallel and Specify the state of the contactless / this contact pair accordingly. 8 - test device according to claim 7, characterized in that the member (P35) of the third Group of the second switching pyramid corresponding to the second contact (LB) of the contact set with a NAND element (B4JL) is connected, on the one hand by an identification circuit (C4i) for three contacts (RT or TR) and on the other hand is controlled by a fault detection circuit (DPM) relating to the mobile area, such that the link has a theoretical state of the potential-free state of the second contact of the set indicates when the switching path is not in the range of the identified, which is limited by the type-specific values Contact lies. 9 - test device according to claim 8, characterized g e k e η η indicates that the circuit for error detection of the mobile area - a link (P50) with three inputs connected to the first three Contacts (LR, LB, LC) of the contact set are connected and that delivers a signal when these contacts match one 9098Ö7 / 08S3 " ^A. State, i.e. "galvanic connection or separation, - A first tilting stage (Bl) which is controlled by the link and stores the signal in synchronism with periodic shift signals received from the transducer (11) during the switchover of the relay are delivered, - two programmable counters (CRl, CR2) in series, their programming (Inputs B and G) is controlled by the element (P5O) and by the value scale switch (CEC) and in which the Program input (inputs L) is controlled by the first flip-flop and the first counter (CRl) periodic feed signals (SPD) is supplied via an input (EC) from the transducer (11) according to the path covered by the mobile needle receives, as well - Contains a second flip-flop (B2) which is controlled by the output of the second counter and which evaluates an error of the switching path is suppressed or not, depending on whether the counter has reached the end of its counting cycle. - Test device according to claim 1, characterized in that means for recognizing the Switching travel errors are provided that consist of a pyramid structure with decoders (DCOl, DC02) for the displacement of the stylus corresponding binary data exist, this structure having three analogous pyramid groups (GlP, G2P, G3P) with three levels per Group and with a NAND sub-element (P73) that contains is controlled by the groups, and each group has a pair of NOR gates for the first stage, a pair of AND gates for 7/0863 _M * 7 - < the second stage and a NOR element for the third
Stage contains that the first stages of these groups on the one hand from a pair of outputs (5τ6, 7-8, 8-9) of the first
Decoder, which indicate the first digit of the decoded number indicating the switching path, and on the other hand are controlled by a circuit that either only detects the presence of break or break contacts in a contact set (X1 + X2 ... + X4 + 90), or the presence of min- or
at least one normally open contact (X5 + X6) / indicates the presence of at least one normally closed contact (PTR), the second stages of these groups being controlled in parallel by a pair of NAND gates (P67, P68) that control the outputs Divide the second decoding (DG02) of the second digit of the number indicating the switching path among themselves, and one of these elements is also controlled on the input side (P68) and the other on the output side (P67) by the value scale switch (CEC) in such a way that the pyramid structure is a logical signal of a certain state delivers when the switching path lies outside the tolerance values, while an opposite signal is delivered when the switching path lies within the tolerances. 11 - Test device according to claims 1 and 10, characterized characterized in that means for displaying adjustment errors of the contact springs and the switching status of the contacts of the springs are provided, and this means a contact spring control circuit (CTLA, CTLB ...) per contact spring (LA, LB ...) 909807/0853 / of the set, each of which has a phototransistor in series (PHA), a bounce suppressor (ELR), a comparator (CEL), a flip-flop (MLA) for storing the Fault in the contact spring and a light emitting diode that the indicates faulty contact spring, the comparator has three inputs, the first of which is connected to the output of the bounce suppressor and its two other outputs (El, E2) each aa one output (CI, RI) of the analysis circuits for the switching state are connected between contact springs depending on the identification number of the contact set and the values of the contact types (Figures 8-10). 12 - test device according to claim 11, characterized in that the control circuits of the springs of the contact set to each other in pairs via pairs of contacts of corresponding rank and via diodes of the phototransistors of the pairs of the control circuits are assigned, the diodes of each pair of phototransistors being connected to a fixed potential on one side and their other terminal is connected to a contact spring and the polarity pairs have different signs are that the connections from a contact to the diode enable the control of the diode pairs ^ if the contact points of the contact springs are connected together, so that an electrical continuity between pairs of successive Contact springs and the control of the corresponding phototransistors take place, the output circuit of each phototransistor leads to a light emitting diode (VL) on which the electrical switching status of the contacts of the contact set is visible. 909807/0853 13 - Test device according to claims 1 and 11, characterized in that the means two toggle stages in cascade to display switching travel errors (MGE, MDC, Fig. 16) and a pair of light-emitting diodes of different colors, which are connected in parallel to an output of the second flip-flop are connected and lead to opposite polarities, so that the first flip-flop (MCE) switched on by one at the output of the bounce suppressor of the first control circuit of the lowest contact of the set (CTLA) which indicates the change in state of this contact while the second flip-flop is switched on, if the switching path control circuit (Fig. 15) one or the other the other of the diodes (DC or NDC) excites to indicate a travel error or no travel error. 14 - Test device according to claim 1, characterized g e k e η η ze i c h η e t that the means of detection and to display shorts to ground of the contacts of the set have a phototransistor (PHM), a multivibrator (MDM) and two light-emitting diodes (NDMi DM) of different colors, a first input of the phototransistor being connected to a given one Potential and a second input (ARM) is connected in parallel to the contacts of the contact set and where the Relaischassiii connected to the opposite polarity, and that the two outputs of the phototransistor are connected to the two with each other oppositely directed diodes connected in series are connected, each diode being connected to one of the two polarities connected. 909807/0853 2832852 15 - test device according to claim 1, characterized in that the means for investigation the response of the relay with respect to the programmable current intensity in the control coil a detector circuit with three inputs, two OR gates (P86, P87) and one output, each input (cem) being assigned by one Flip-flop (MCE) is supplied with the state change signal of the first contact of the corresponding contact set receives, so that this signal indicates an actuation of the contact set to which this contact belongs, i.e., the tightening of the Relay indicates. 16 - test device according to claims 1 and 15, characterized in that the means for switching and distributing the programmed amperage to the control coils of the relay to be monitored from one Cycle distributor (DTC) exist, on the one hand the logic circuits (CLBl, CLB2 ... CLB4) for switching the programmed power supply and, on the other hand, a power supply interruption circuit (CCA) and reversing controls the power supply (IA) for switching relays (APBl, APB2 ... APB4) with respect to these circuits, whereby the cycle distributor has a first programmable counter (Cl), the loading input (CH) of which is connected to the output of the detector circuit for the response is connected, its binary data outputs to a BCD decoder (Dl) and its carry output (RP) are connected to the input of a second counter (C2), the last two outputs (8-9) 909807/0353 of the decoder (Dl) to the circuit for interrupting the Power supply are connected and the binary data outputs of the second counter are connected to control elements (CBl, CB2 ... CB4) of the logic circuits (CLBl, CLB2, ... CLB4) cause the circuit to interrupt the power supply Has transistor (CCA) whose emitter is connected to earth, whose base is controlled by the decoder and whose collector parallel to one end of the switching relay winding (APBl to APB4) or the relay for the programmed reversal of the power supply XlAP) is connected in such a way that the relay in operation with respect to each relay coil on two operating cases are examined in succession by first applying a current to the terminals of the relay coil and then applying the current is reversed in the coil. 17 - Test device according to claim 1, 15 and 16, characterized in that the means for the display the response error of the relay to be examined in the circuits for switching the power supply (CLBl, CLB2 ... CLB4) are included and have two D flip-flops (BIl, B12) in each circuit, which have an exclusive / OR element (Pill) connected to two NAND elements (P121, P131) that control two light-emitting diodes of different colors, with the clock inputs of the flip-flops from the detector circuit (P86, P87) are controlled and the second flip-flop is controlled by the first, that the exclusive-OR gate and the Rest position of the first toggle stage by a control type selector 9Ö9 & Ö1 / O8S3 (SMC) regarding the response behavior of the relay can be controlled, with the exclusive OR gate from the complementary output (Q) of the second flip-flop is controlled and itself controls the first NAND gate (P121), which in turn controls the second Element (P131) and a first light emitting diode (NDF) controls, on which the correct response behavior is displayed while the second element controls a second light emitting diode (DF), which indicates incorrect behavior. 18 - Test device according to claim 1, characterized in that the means for storing and display of the installation errors of the relay armature on the coil core an emitting diode (DER) and a phototransistor (PHT) included, which are arranged on both sides of the Ariker core area of the relay to be controlled, the phototransistor acts on a transistor amplifier stage (TRA), which is connected to an inverter (125) and via two AND gates in series (P102, P104) controls a flip-flop (MPL), in which the absence of a fault in the armature's contact with the core is stored, the first element being controlled by the last two steps of the second counter (C2), while the second element is controlled by the penultimate step of the counter, and that the outputs of the flip-flop are each a NAND element (P105, P106) that is acted upon by the last step of the counter and one light-emitting diode of different colors to indicate the presence or absence of a system fault applied. 9098O7 / OÖS3