DE1030885B - Test circuit for selector with two switch arm sets - Google Patents

Description

The main patent relates to a circuit arrangement for voters with two switching arm sets that operate simultaneously Check two lines of the same line group whether one of these lines is free. According to the circuit arrangement of the main patent is the test relay of one switch arm set compared to the test relay of the other switch arm set preferred, d. That is, as soon as the preferred test relay responds, opening a contact will activate it Test relay The test circuit for the second test relay is interrupted so that it can no longer respond. However, if the non-preferred test relay picks up, it disconnects the test circuit for the preferred test relay on. The preference for one test relay only has an effect if both switch arm sets have one at the same time Find a free line. In this case, both test relays pick up first, but only the preferred one can be Hold the test relay and the non-preferred one drops out again. Because the test relays and the switch arm sets are off Manufacturing aspects do not always turn out to be the same, this can happen when the Extreme values of the permitted tolerances occur that when checking for two free lines, both test relays are briefly excited and, since they switch off each other by opening their contacts, an assignment there is no free line, as both test relays drop out again. The object of the invention is to remedy such incorrect assignments to avoid. According to the invention this is achieved in that, in addition to the normal switching means, which achieve the preference of a switching arm set due to their circuit technology, additional switching means are provided that also trigger the test relay of the preferred switch arm set, if, due to the given tolerances of the other switching means, the normal switching means respond of the test relay of the preferred switch arm set.

The drawings show exemplary embodiments of the invention. In Fig. 1, the response of the preferred test relay is ensured by a resistor-capacitor combination even if both test relays pick up at the same time and the circuit for the preferred test relay is disconnected. In FIG. 2, by connecting a rectifier in parallel to one or both windings of the preferred test relay, the latter is delayed drop-out so that it remains attracted until its own hold circuit is closed. As is also shown in dashed lines in FIG. 2, by connecting a capacitor in parallel to a winding of the non-preferred test relay, this can be given a short pick-up delay so that the preferred test relay can reliably pick up in the meantime. In Fig. 3, a third winding is used for both test relays, each of which is arranged in the test circuit of the other relay so that with simultaneous testing of both test circuits for voters
with two shift arm sets

Addendum to patent 966 990

Applicant:

Siemens & Halske Aktiengesellschaft,

Berlin and Munich,
Munich 2, Wittelsbacherplatz 2

Ferdinand Schalkhauser, Dipl.-Ing. Heinz Mertel,

Dipl.-Ing. Rudolf Hannig, Munich,

and Dipl.-Ing. Ullrich Tanke, Graefelfing near Munich,

have been named as inventors

Switching arm sets amplifies the magnetic field of the preferred test relay through its third winding and that Magnetic field of the non-preferred test relay is weakened by the third winding, so that the latter one receives a small pickup delay.

When the group selector shown in FIG. 1 is occupied, the occupancy relay C is excited via the cl wire. The impulse receiving relay A picks up impulsively due to the current impulses of the number dialing transmitted via the AL wire. At the first current surge, relay F is switched on via contact 15a.

After the end of the first pulse, relay A drops out, and relay D via its winding I can pick up via the now closed contact 16 ″.

2. +, ..., 16 ", 17 t), Dl, -.

Relay V remains energized due to its dropout delay during a series of surge currents. Relay D closes the circuits for the motor coils Ml and M2 of the motor selector, which are excited at the same time, via its contact Ud.

3. +, Ud, 12ml, Ml, -.

4. +, Ud, 12ml, 10a, o'clock, 9v, M2, -.

With the second current impulse, relay A responds again and opens its contact 10 «. This interrupts the excitation of the motor coil M2 , so that the armature of the motor selector is connected to the motor coil Ml.

809 52 & / 170

3 4

pulled and rotated. Stopped by one on the via contact 7pl. The motor coil AfI will

The cam disk attached to the armature axis is energized according to current flow3, while the motor coil M2

now alternately the motor contacts 12ml and in the following circuit is excited.

13m2 closed. When contact I3m2 is closed, -,. ,, Y, -, jo ^ i 7 ^, 1 jyro -

the motor coil M2 is excited via '5''>r>> ·

5 + Vli lZm2 M2 - After the next step, the motor coil M 2

'' energized after circuit 5 and the motor coil from Ml in

After the end of the second rush current, the following circuit. Reaching the next main _{detent position} via the main detent contact clock, _{which is then closed Ua)} _ _{+ Ud} ^ ₂ 7pl Μχ __, both motor coils 10 ^r

energized (see circuit 3 and 4), during the pick-up time By closing the contact 7 ^) 1 the winding

of relay A , relay D is short-circuited via its winding II treatment II of relay D , so that it is held back, since contact 16 «drops the holding circuit for hesitant. The opening of contact 2Qd of relay D, winding I, interrupts. 'remains irrelevant because the test relay PHl through

6 4- 14iZ DII M2 - ¹⁵ Closing its contact 23 Feel one of the contact

'''' 20 d has closed the independent holding circuit (cf. current in this circuit receives the low-resistance engine running 10). When the test relay PHl responds , there is a fault current through coil M2 , because the winding II of the relay D whose contact lfihl the 1-wire to the 2-wire and is high-resistance. In the case of the following current surges, the δ 1-wire with the & 2-wire, the switching arms of the motor selector are connected by a decade 20 via the contact ifihl. This is switched on by opening contact 5 fihl. After the last current surge, the current surge receiving relay A is switched off from the «1-wire, relay V is delayed and interrupted by opening so that the following current surges cannot be absorbed by this relay at its contact 9ν, the simultaneous excitation of both. Motor coils (see circuit 3 and 4). Since now only one finds but only the switch arm set of the not before motor coil is energized, the motor can start again. 25 if the test relay P2 has a free line, the relay responds. The switch arms of the motor scooter pass over the P2 (cf. circuit 8) and interrupts by opening the decade of your choice. its contact 21 fi 2 shows the test circuit (see FIG. current In were energizing of the relay V via its contact run 7) for the preferred test relay Pl. relay Pl 19 may ν the test circuits for the two Schaltarmsätze then do not respond more when the Line on which closed. The test circuit for the preferred test 30 of the switch arm set assigned to this test relay is present, relay P1 runs as follows: becomes free. Relay P2 energized by closing its con-

7. +, 18c, Viv, 2Od, GrI, 21fi2, Pill, PlI, _C 2-Arm, taktes25j & 2 the auxiliary test relay PiT2.

..., - (VEl). 12. +, 18c, 19z>, 20c ?, Gr2, 25fi2, PH2, P2I, 26 ^ 1,

At the same time, the test circuit for the not 35 '""'

preferred test relay P2 closed. By closing the 24tfih2 contact, this is maintained

8. +, 18c, 19 «, 2Od, Gr2, P2II, P2I, 26 ^ 1, c3 arm, test relay P2 and the auxiliary test relay PH2 independently

- (VE2) of contact 2Oi? above

^ "' ,., C,,. >. , ·, - ₊ . . . . . 13. +, 18c, 19v, 2Aph2, PH2, P2I, 26pl, c3-arm, ...,

If both arm sets meet a free 4 ° _ rykg)

further connecting line, the preferred test relay Pl should pick up in any case and when the test relay P 2 responded, the motor opening of its contact 26 fil the test circuit for the selector through simultaneous excitation of both motor coils interrupted the non-preferred test relay P2 and this AfI and M2 stopped. The motor coil Ml will prevent us from responding. However, as already mentioned, 45 already described, energized after circuit 3, while the can, when the extreme values coincide , the is excited by motor coil M2 in the following circuit, manufacturing-related aspects required ToIe- _iA , ^, 4, _{Λ a} . ~ _{Λ / Γο}

jΓτ- η j. χ j nil -j τι »r ι · τ> · ι J πο ■" · ~ Γ> VtA, iimX, ofii, Ml, -.

it happens that both test relays Pl and P2 ^r

attract and switch off each other, because test relay If a free line is only in the next step before- PI interrupts the test current 50 with its contact 26fil, then when the test relay P2 responds, the

circuit for relay P2, while this energized by opening its motor coil M 2 after circuit 5, while the

Contact 21j> 2 the test circuit for relay Pl under motor coil M1 is excited in the following circuit,

breaks. The inventive arrangement of a ^ v, y, ^ 13 ^ 2 8 * 2 Ml -

Resistor-capacitor combination, consisting of ) ■ -r>·>V>>

the resistor WiI and ^ em capacitor Ko 1 parallel 55 relays!) drops due to a short circuit of its winding II

to contact 21 ^) 2 of the non-preferred test relay, is off and switches by opening its contact 14i the

now ensured that the preferred test relay Pl is off when both motor coils are excited.

In each case pulls through and by closing its Kon- After response of the auxiliary test relay PH2 is over

taktes22j!> l holds itself independently of contact 21 ^> 2, whose contact 2fih2 the «1-wire with the« 3-wire and

9. +, 18c, 19 », 2Oi, GrI, 22ρ 1, PHl, Pll, c2 arm, ^6o J ** Kontekt6M2 connect the oil wire with the b 3 wire

- (VEl) bound. By opening the contact 3 ^ & 2, the

""'Impulse receiving relay A switched off from the «1-wire.

In this circuit, test relay PH 1 responds and Fig. 2 shows another solution of the invention

closes one of contact 2Od via contact 23 ^> M thanks to the response of the preferred test relay

independent holding circle. 65 Pl with certainty when checking both at the same time

10. +, 18c, 19z ;, 23 * A1, PHl, PlI, c2-Arm, ..., - switch arm sets. In this figure are

(YEl) only the test circuits for the preferred test relay Pl

and the non-preferred test relay P2 included. the

When the test relay P1 responds, the other circuit details correspond to the selector shown in FIG. 1 by energizing both motor coils M1 and M2 70. Likewise are the switching operations that are involved

the setting of the motor selector, the subsequent free selection and the connection of the connecting lines after checking for a free line play, the same as already described with reference to FIG.

After the last current surge, relay V , which was picked up during the series of current surges, drops out with a delay and closes the test circuits for the preferred test relay P1 and the non-preferred test relay P2 via its contact 19t> (see circuit 7 and 8). If both switch arm sets find a free line at the same time, the preferred test relay P1 should definitely pick up in this case as well. This is achieved in this exemplary embodiment in that a rectifier Gr 3 is connected in parallel with winding I of the preferred test relay P1. If both test relays pull on at the same time and separate their test circuits by opening their contacts 26 ^ 1 and 21p2, the rectifier Gr 3 parallel to winding I of the preferred test relay P1 ensures that the relay Pl receives a small drop-out delay, so that the contact 22 ^) 1 remains closed with certainty and the test relay Pl is held via this contact independently of contact 21 ^ 2 (see. Circuit 9). Instead of the rectifier GrZ , as indicated by dashed lines, a rectifier Gr 4 can be connected in parallel to the windings I and II of the test relay P1. This rectifier GrA also ensures that with simultaneous testing via both switch arm sets and simultaneous response of the two test relays Pl and P2, the preferred test relay P1 receives a small dropout delay, so that this relay is independent of contact 21 ^ after closing its contact 22 ^ 1 2 holds.

There is also the possibility, instead of parallel to the windings of the preferred test relay P1, to connect a rectifier Gr3 or GV4 parallel to one or both windings of the non-preferred test relay P2, a capacitor Ko2 . As a result, the non-preferred test relay P2 receives a short pick-up delay, so that the preferred test relay P1 can pull in with certainty while testing both switch arm sets.

FIG. 3, like FIG. 2, shows only the test circuits for the preferred test relay P1 and for the non-preferred one Test relay P 2. The other circuit details correspond to those in Fig. 1. In this solution is in the Test circuit of the preferred test relay Pl, the winding III of the non-preferred test relay P2 switched on. However, as can be seen from the designations for the beginning and end of the windings, the winding becomes III of the non-preferred test relay P2 with simultaneous testing of both switch arm sets of the Test current flowed through in a different direction than windings I and II of test relay P2. This gets the non-preferred test relay P2 has a pick-up delay. In the test circuit of the non-preferred test relay P2, winding III of the preferred test relay is Pl turned on. This winding III is checked at the same time on both switching arm sets, as from the Designation for the beginning and end of the winding ζ α can be seen, through which the test current flows in the same sense like the windings I and II. As a result, the preferred test relay P1 receives a pick-up acceleration. There thus the pick-up of the preferred test relay Pl accelerates and the pick-up of the non-preferred test relay P2 is delayed, is with simultaneous testing of both Switching arm sets ensure the safe response of the test relay Pl and the safe shutdown of the test relay P2.

However, if a free line is found in only one switch arm set, it has to be in the test circuit activated third winding of the other test relay has no meaning. An acceleration or a deceleration of the testing relay does not take place in this case.

The exemplary embodiments of the invention shown in the three figures are not related to circuit arrangements Motor voters limited, but can also be used advantageously with other voters.

Claims (5)

Patent claims: 1. Test circuit for voters with two switch arm sets that can be set simultaneously on two lines of the same line group, each of which is provided with a fast-responding test relay and one of the auxiliary test relays dependent on this, one of the two switch arm sets is preferred in that the test relay is this preferred switch arm set with simultaneous testing on both switch arm sets interrupts the circuit for the test relay of the non-preferred switch arm set and that contacts of the test or auxiliary test relay of the non-preferred switch arm set are arranged in the circuit of the test relay of the preferred switch arm set that its preference is canceled when the test relay of the not preferred switch arm set is switched on, according to patent 966 990, characterized in that in addition to the normal switching means (26 ^> 1, 21 ^) 2), which achieve the preference of a switch arm set through their circuit technology, additional switching means (WiI, KoI, GrZ, Gri, Ko2; PlIII, P2III) are provided, which bring the test relay (Pl) of the preferred switch arm set to respond even if the normal switching means do not guarantee the response of the test relay of the preferred switch arm set due to the given tolerances of the other switching means. 2. Circuit arrangement according to claim 1, characterized in that a resistance capacitor combination (WiI, Ko 1) lies parallel to the contact (21p2) of the test relay (P2) of the non-preferred switch arm set lying in the circuit of the test relay (Pl) of the preferred switch arm set and causes that the preferred test relay (Pl) remains picked up if both test relays pick up at the same time via both switch arm sets. 3. Circuit arrangement according to claim 1, characterized in that a rectifier (GrZ, Gri) is connected in parallel to one or two windings of the preferred test relay, which causes a drop-out delay for the preferred test relay (Pl) so that it remains attracted when at the same time Testing, pull on both test relays via both switch arm sets and the contact (21 ^> 2) of the non-preferred test relay (P2) interrupts the circuit for the preferred test relay. 4. Circuit arrangement according to claim 1, characterized in that in the circuit of the not preferred test relay (P2) a third winding (Pl III) of the preferred test relay and in the circuit of the preferred test relay (Pl) a third winding (P2III) of the non-preferred test relay are switched, which are arranged so that when simultaneously testing both switch arm sets the third Winding (PIII) of the preferred test relay the magnetic field generated by its first and second winding amplified, while the third winding (P2III) of the non-preferred test relay that of its first and second winding weakens the magnetic field generated and the response of this non-preferred test relay is delayed. 5. Circuit arrangement according to claim 1, characterized in that a capacitor (Ko2) is parallel to a winding of the non-preferred test relay is switched, which reaches a pull-in delay of the non-preferred test relay (P 2), so that the preferred test relays (Pl) can pick up during this pick-up delay with simultaneous testing via both switch arm sets. 1 sheet of drawings