DE2210327A1 - Receiving relay - Google Patents

Description

Our reference: C 2864

COMPTEURS SCHLUMBERGER
12 Place äes Etats-Unis
92 Montrouge, France

Receiving relay

Invention relates to a receiving relay for Use in ripple control systems in which a single Transmitter sends command telegrams without pilot wire, the synchronous from one or more vibrating reed receiving relays that are connected in parallel to an electrical power supply network, the receiving relay optionally at least two Types of telegrams that can be decoded through differentiate between a short and a long start-up pulse.

There are ripple control systems known in which a single The transmitter sends command telegrams without a pilot wire, which are received synchronously by one or more receiving relays that are connected in parallel to an electrical power supply network. A command telegram is through a pulse cycle is formed, the total duration of which is 102.25 s.

The first interval between two pulses is set at 3.75 s and the other intervals at 2.5 s. the

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Command pulses have a duration of 1s.

For the execution of a command, each receiving relay responds to a code contained in the telegram. It are receiving relays that respond to a telegram A, which contains a long starting pulse of 2.5 s, which is at the beginning of the first interval of 3.75 s, and a command pulse which is sent at the beginning of one of the following intervals.

Other receiving relays respond to a telegram B, which has a short start pulse of 1a as well as a contains the command pulse sent in the same way as with telegram A. There are also receiving relays that act on a Address telegram C, which contains a short start-up pulse of 1s, which is followed by a preselection pulse (1s), which is a Command pulse of rank η precedes.

A receiving relay that normally responds to code B is also sensitive to code A. Both conventional receiving relays it is not possible to have a to carry out selective decoding, so that these receiving relays can be used on the same ripple control network are not compatible.

The aim of the invention is to eliminate these drawbacks by creating ripple control receive relays of the same structure, each of which decodes one of two types of telegrams can by changing this both by the duration of the start-up pulse and by the rank of the command pulse differentiate.

According to the invention this is achieved in that a vibrating tongue frequency counter when receiving the first Pulse of the command telegram actuates a release lever,

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which closes an excitation circuit that has a contact controlled by a start-up cam and feeds a motor which has a primary decoder body shaped in accordance with the image of the telegram and at least two secondary decoding bodies coupled together dacart drives that the primary decoding body rotates synchronously with the transmission of the telegram and the secondary decoder body rotates at one speed rotate which is a multiple of the speed of rotation of the primary decoder body is that each secondary decoder body is provided with two gaps which are at an angle to each other are offset, which of the time between two command pulses after the time interval reserved for the first pulse is proportional that two sensing levers are controlled by the two gaps of each secondary decoder body, which open a cam wheel for the delivery of closing and opening be missing act that correspond to the even or the «! even pulses decoded by the frequency selector, and that a common pawl is provided. which locks the feeler lever in the absence of impulses and in the Receipt of an even or odd command pulse is withdrawn so that at least one of the feeler levers is operated via the gap, which is synchronous with the command pulse, and the cam wheel makes an electrical contact closes with an odd impulse and opens with an even impulse.

An advantageous development of the receiving relay according to the invention is that the primary decoder body has a first row of teeth which can be broken off to form gaps which stimulate the start-up and command pulses correspond to the telegram to be decoded, and that a main pin attached to the release lever is that when the first pulse is received in a start-up gap and into the interior of the hollow profile of the primary decoding

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body occurs and when a command pulse appears corresponding gap exits, so that the release lever between the gaps over the contact of the start-up cam keeps the outgoing excitation circuit of the motor closed.

There is a further improvement in this embodiment in that the release lever is optionally provided with an additional pin, which by the rotation of a hollow profile, the start-up cam is blocked when the first pulse is short, so that the release lever mechanically blocked the frequency selector and this on the command pulses transmitted after a short pulse does not respond for the entire duration of the telegram.

Preferably, the reception relay is designed so that the primary decoder body has a second row of teeth which can be broken off to form gaps, which correspond to the start-up pulses and the command pulses of the telegram to be decoded, and that a parallel for the winding of the frequency selector lying electrical contact is arranged so that it is when passing the Gaps are opened and outside the gaps is closed.

An advantageous embodiment of the receiving relay is according to the invention is that each sensing lever and the associated cam wheel are provided on the mutually facing side surfaces with cooperating axial ratchet teeth, which are designed so that they in the corresponding tilting movement of the sensing lever in a gap Are brought into engagement, and when the feeler lever hits the massive outer profile of the secondary decoding body, the corresponding opposite tilting movement is caused by the engagement of the ratchet

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serrations the cam wheel is rotated by an angle that corresponds to the closing or opening of the associated electrical Contact.

In this lall is. the receiving relay is preferably designed in such a way that the cam wheel has two axial ratchet teeth that are arranged symmetrically to one another on one or the other side surface, and that the two associated sensing levers have an axial ratchet teeth that are resiliently pressed against the corresponding ratchet teeth of the cam wheel, that the pawl toothing of one sensing lever is offset by half of the angle proportional to the time between two command pulses against the pawl toothing of the other sensing lever, so that the toothing of an I ¹ UhI he be Is, who has carried out an opening command, at the end of the rotation in direct Engagement with the corresponding toothing of the cam wheel is in place, while the toothing of the andearan sensor lever is set forward by half a tooth against the other toothing of the cam wheel in readiness for the execution of a closing command and thereby the toothing in engagement at the end of the rotation g cannot repeat a previously executed command.

One possible implementation in this case is that the secondary decoding bodies are coupled in such a way that each other their respective gaps are in phase in pairs and one revolution of each secondary decoding body3 of the execution of an instruction corresponds to that of two consecutive possible commands is selected.

Another possibility is that the secondary Decoder bodies are coupled with such mutual displacement of their gaps that one revolution of each secondary Decoder body implementing one of four consecutive possible commands corresponds to the selected command. 209841/0685

An embodiment of the invention is shown in the drawing shown. Show in it:

1 shows the basic electrical circuit diagram of the receiving relay according to the invention,

Figure 2 is an exploded perspective view an embodiment of the mechanism of the receiving relay of Fig. 1,

Fig.3 is another view of part of the receiving relay of Fig. 2,

4 shows a schematic view of a decoder body and a feeler lever in one embodiment of the Re la is

Fig. 5 is a schematic view of a decoder body and a feeler lever in another version of the receiving relay,

6 to 9 are schematic representations of the ratchet teeth at the feel mists and camraiers in different positions and

Fig. 10 diagrams to explain the operation of the receiving relay is according to the invention.

In the arrangement of Fig.1, the receiving relay is with terminals 1 and 2 connected in parallel to the mains. the Terminal 2 is connected to circuit point d and terminal 14a a winding H connected. Terminal 1 is connected to circuit point c and a capacitor 13, which is connected in series with the winding H at terminal 14b. The winding H can be through a contact 15a,

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15b are short-circuited. The capacitor 13 and the winding 14 form a tuned resonant circuit «, which is used in a manner known per se to achieve a frequency selection. A motor 10 is on the one hand with the circuit point c and on the other hand via contacts 11a, 11b and 12a, 12b connected in parallel connected to node d. The role of the Terminals 3 »5 connected contacts 8a, 8b and the contacts 9a, 9b connected to terminals 6, 7 is in the Explained by the following description.

Fig. 2 shows a frequency selector 16 of a known type Kind with a magnetic circuit 1? and an oscillating tongue 18, which is clamped at one end in a holder 19 and is provided with a pawl 20 at the other end. A lateral approach 21 of the oscillating tongue 18 is located in Air gap of the magnetic circuit 17. The pawl 20 is in engagement with the circumference of a KTLinkeu- or Reityingsrades 22., that is amused on a wave 23 passing over an Oldham clutch 25 and a gear transmission 26 one Cam disk 27 drives. The arrangement formed from the rotatable parts 2 2 to 27 is supported by a spring 29, which is anchored on the one hand to a pin 28 of the cam disk 27 and on the other hand to a fixed point 24, pulled into a rest position.

In the position shown in Figure 2, the rest stop holds 27a of the cam disk 27, the crank 32 of a disk 33 in a position that corresponds to the rest position of the Release lever 34 corresponds. The disk 33 is connected in a rotationally fixed manner to the shaft 30 of a pawl 57. Of clarity because of the pawl 57 is shown in the drawing by four parts 57, 57 ', 57 ", 57"', which, however are combined in practice into a single part, the width of which is so large that it the lugs 51a, 52a, 53a

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and 54a are detected.

The motor 10 drives a shaft 36 via a reduction gear on the one hand, which rotatably with a primary decoder body 60 and a primary cycle cam 39 is a related party and, on the other hand, a shaft 37 that rotates with a start-up cam 38 and secondary deco dierkorpern 40 and 45 is connected. The shaft 36 and consequently the cam 39 and the decoder body 60 lead in one rotation every cycle with a fixed duration of 102.5 s. The shaft 37 and consequently the cam 38 and the decoding bodies 40 and 45 perform nine revolutions per cycle (1 to 9 in FIG. 10b), that is to say one revolution in 12.5 s. The reductions and times are only given as an example.

The contact members 11a, 11b, which are actuated as a function of the start-up cam 38 and a projection 35 of the release lever 34, control the excitation circuit of the Motor 10 (Fig. 1). The contact members 11a, 11b close when the contact blade 111a emerges from the notch 38a, so that the excitation circuit of the motor 10 after Starting for one revolution (12.5 s) is maintained. The contact 12a, 12b is closed as soon as the Contact lamella 121a emerges from the notch 39a, so that the excitation circuit of the motor 10 for one revolution (102.5s) the primary cycle cam 39 is maintained.

The decoding body 60 effects mechanical and electrical interlocks with its teeth. Its circumference has two similar tracks, each of which contains a fixed gap 60a and 60b, respectively, 18 teeth in the manner of tooth 61a and 61b, and one compensation tooth 61a 'and 61b ¹ , respectively.

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As the diagram of Pig.10a shows, through the division of the primary decoder body 60 is as follows Times:

3.75 s for a fixed gap 60a or 60b;

2.5 s for a coding gap 61 (which corresponds to a tooth 61a or 61b is equivalent to);

8.75 s for a compensation ^{tooth 61a 1} or 61b ¹ ;

a total of 112.5 s for one complete revolution of the decoder body 60.

The mechanical. Release of the actuation of the release lever 34 depends first of all on its pin 62 falling into the fixed notch 60a, and then on that this pin 62 in an Oodierlücke, e.g. the Godierlücke 61, obtained by breaking out a tooth 61a. Fig. 3 shows an additional optional Locking of the release lever 34, which can be applied to the receiving relay for start-up commands of short duration (1s) to make insensitive. In this case, intervene A pin 63 attached to the release lever 34 into a cam bell 38b that is fixedly connected to the cam disk 38. The lifting of the release lever 34 is only possible with simultaneous release of the pin 63 when entering the Opening 38c and the pin 62 when entering the fixed gap 60a possible.

The electrical release of the actuation of the receiving relay takes place by opening the contact 15a, 15b, which short-circuits the winding 14 (FIG. 1). Opening this Xontakts occurs when the contact lamella 151a falls into a coding gap that is similar to the coding gap 61

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previous breaking out of a tooth 61b is formed has been.

The secondary coffee maker body 40 has two tracks, namely a track 40a with a gap 42 and a track 40b. with a gap 44. The secondary decoder body 45 coupled to the decoder body 40 also has two tracks, namely a track 45a with a gap 46 and a track 45b with a gap 48 rotation in 12.5 s performs, so taking into account the spacing of the pulses of the message, the gap 42 at a distance of 108 ° from the A O sgangsstellung the decoding body 40 is (Tig.4 and 10B). This arrangement takes into account the time of 3.75 s, which corresponds to the first pulse (start-up pulse), and the gap between this start-up pulse and the first command pulse. The possible positions of the gap 42 are at mutual distances of 72 ° following the angle of 108 °, starting from the starting position 0 of the decoder body 40, so that the time of 2.5 s between two command pulses is taken into account 'Fig. 4 and Fig . 10).

The gaps 42 and 46 can be made in phase (Figure 4) that the decoding bodies 40 and 45 in the same Way to be set on the shaft 37. For this purpose, a pin 41 of the decoder body 45 engages Hole 49 of the decoder body 40. A phase shift of the gaps is obtained in that the pin 41 is inserted into the hole 50, which in the present example corresponds to an offset of 144 °.

Lanes 40a, 40b and 45a, 45b are followed by respective ones Levers 51, 52, 53 or 54 sensed, which are pivotable about an axis 55 and individually by a spring 56a, 56b, 56c and 56d, respectively. Each of these

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Lever has a nose 51a, 52a, 53a or 54a, and these Lugs can be retained by the common pawl 57 attached to the shaft 30.

The inner surfaces of the levers 51 to 54 have ratchet teeth, as shown in FIGS. 6 to 9 at 51b and 52b are shown; these ratchet teeth are oriented in the direction of the axis 55. A cam wheel 58, which rotates on the axis 55, i3t between the inner surfaces the levers 51 and 52 are arranged. Another cam wheel 59 is in the same way between the Levers 53 and 54 arranged. The two cam wheels 58 and 59 have ratchet teeth on their two end faces, as in Pig. 6 to 9 at 58a and 58b for the cam wheel 58 are shown; these ratchet teeth have the same number of teeth as the Ratchet teeth of the levers »

So that the relative movements are preserved, ie © in the course the following description will be explained, it should be noted that the axial teeth 51b and 52b, which belong to the levers 51 and 52, are offset from one another by 36 ° when these levers are in the Are in the rest position, while the ratchet teeth 58a and 58b of the cam wheel 58 are symmetrical (Figure 6).

The arrangement of the ratchet teeth could easily be reversed. The same teeth as in 6 to 9 for the levers 51, 52 and the cam wheel 58 are also located on the levers 53, 54 and on the cam wheel 59 »which actuates the contact 9a, 9b.

The one of the Habein 51 to 54 and the cam wheels 58, formed, freely rotatable stack has an axial play. Which is obtained with the aid of a spring 43 which

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the axis 55 between the levers 52 and 53 is arranged is, so that the ratchet teeth 58a, 58b and the corresponding teeth of the ratchet 59 with the corresponding toothings of the levers, such as the toothings 51b, 52b, free to engage or disengage Intervention can come. The stack is obtained from a pin 56 fixed on the axis 55. The contact links 8a, 8b and 9a, 9b of Fig. 1 are in Fig. 2 can be seen in front of the cam wheels 58 and 59, respectively. The movable contact blade 8a is supported by the cams 58d of the cam wheel 58 is actuated and the movable Kpntaktlamelle 9a is operated by the cams 59d of the cam wheel 59 actuated.

This receiving relay works in the following way: When a telegram is sent over the network (Fig. 10), the frequency of the first pulse O is applied to the winding 14 in accordance with the diagram in Fig. 1. The oscillating tongue 18 comes into resonance as a result of the attraction exerted on its anchor 21 and sets the ratchet wheel 22 in rotation via the pawl 20. The movement is transmitted to the shaft 23, the Oldham coupling 25, the gear transmission 26 and the cam disk 27. The cam disk 27 tensions the spring 29 by the movable fastening pin 28. The length of the work stop 27b on the cam disk 27 is provided so that the first short or long pulse 0 of the telegram is decoded. As soon as the work stop 27b hits the crank 32 before the duration of the first pulse has expired, the disc 33 rotates with the shaft 30. At the end of the first pulse, the crank 32 has turned sufficiently far to raise the release lever 34, the pin 62 of which enters the fixed gap 60a. The V _o rsprung 35 moves together with the trigger lever 34 and thereby the

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Contact larelle 111b free, whereby the contact 11a, 11b is closed, which the starting circuit of the motor 10 (Fig. 1 and 2) closes. The motor 10 starts and drives on the one hand, the start-up cam 38 and the decoding body 4-0, 45 via the shaft 37 and on the other hand the cycle cam 39 and the decoder body 60 via the shaft 36. The starting cam 38 adjusts the closed contact 11a, 11b (via the contact la me lie 11 la) such that the contact flame 111b is again dependent brought from the projection 35 and thereby a next start-up process is prepared. The cycle cam 39 closes the contact 12a, 12b, so that the permanent Operation of the motor 10 for one complete revolution (102.5 s) of the decoder body 60 is guaranteed. At the same time, the shaft 30 pivots the pawl 57 so that the scanning levers 51 to 54 are released, the remain in their initial position because they rest on the solid section of the tracks 40a, 40b, 45a and 45b.

If after a maximum time of 2.5 s the first start-up pulse stops, the release lever 34 falls back, and with it the pawl 57. After 3.75 s, the contact blade He falls 111a back into the notch 38a of the start-up cam, whereby the start-up circuit going through the contact 11a, 11b the motor is interrupted, but the motor is still fed via the remaining circuit, the one controlled by the cycle cam 39 Contact 12a, 12b goes. The winding 14 is short-circuited by the contact 15a, 15b, which is caused by the adjustment the contact lamella 151a is closed when exiting the gap 60b. At the same time the Pin 62 out of gap 60a so that it lies outside of decoder body 60. The relay is now ready to receive the command pulses ready.

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-H-

In order to meet the operating conditions of certain power supply networks in which at least two types of receiving relays are present at the same time, for example one type that works with a long start-up pulse and another type that works with a short start-up pulse and a subsequent preselection pulse, it is essential to to distinguish the length of the start-up pulse. Therefore, a receiving relay that is intended for operation with a long start-up pulse must be insensitive to a short start-up pulse; it is equipped with the additional pin 63 (Fig. 3) for this purpose. In this case, the operation proceeds as follows: If a short start-up pulse (is) is received from the frequency selector 16, the release lever 34 is raised in the manner previously described. At the end of this pulse, the pin 62 falls again into the gap 60a, while the pin 63 again falls into the opening 38c, and thereby enters the interior of the cam bell 38b, so that the release lever 34 for one complete revolution of the cam bell 38b, its rotation is connected to that of the cam disk 38 is locked by the pin 63 in the lower position.When command pulses from the frequency selector 16 are received: u ^ en 'and it is assumed that br; i the decoding of command pulses coincidences with the gaps 60b dos '. ocodierkorpers 60 occur, whereby the short circuit of the winding 14 would be canceled by opening the contacts 15a and 15b, the release lever 34 cannot be lifted by the crank 32, which is blocked by the release lever 34, conversely. The receiving relay therefore speaks to the following! Command impulses not on.

If, on the other hand, the catch relay has a long start-up pulse receives, the release lever 34 holds the pin 63 in the upper position for 2.5 seconds; this time is enough for the pen is overflowed by the opening 38c and outside the curve

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bell 38b is held. As a result, the release lever is activated for the entire duration of the rotation of the decoder body 60 in brought the upper position. As a result, all following command pulses are synchronized with the opening of the Contacts 15a, 15b are received and act on the curve and the pawl 57. The receiving relay therefore responds to the command pulses that follow the long start-up pulse.

Depending on the conditions of use of a network It must be possible at the same time that the receiving relay is present be that the decoding of the command pulses with various mechanical couplings of the decoding body 40 and 45 can be done so that, depending on the situation, the execution of 8 or 16 instruction pairs is possible. As already explained above, these different couplings are obtained in that the pin 41 engages either in the hole 49 when the decoder bodies 40, 45 are intended to be in phase, or into the hole 50 if they are out of phase should.

A pair of command pulses is decoded independently of the prescribed coupling Telegram through the decoding body 4o and 45 in the following way: When a closing command pulse on the one hand synchronously with the decoding conditions prescribed by the decoding body 60 and, on the other hand, synchronously with the passage of one of the gaps 42, 44, 46 or is released, the crank 32 pivots the pawl 57, which releases the nose of the corresponding lever, for example nose 51a of lever 51. The end of the lever 51 enters the gap 42 under the action of the spring 56a. The ratchet locking 51b of the lever 51 (Figs. 2 and 6) slides over dis corresponding

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Ratchet teeth 58a of the cam wheel 58, what by the Axial play permitted by the spring 43 is made possible. The ratchet teeth 51b are thus adjusted by 36 ° opposite the pawl teeth 58a.

At the end of the closing command pulse, the end of the lever 51 runs on the track 40a, and the ratchet teeth 51b comes into engagement with the ratchet teeth 58a (Fig.7) »uta to pivot the cam wheel 58, and into the To bring the position of Fig. 8, which corresponds to the closing of the contacts 8a, 8b.

When an opening command among those previously specified Synchronous and decoding conditions is output, the crank 32 pivots the pawl 57, which the Releases the nose of the corresponding lever, for example the nose 52a of the lever 52. The end of the lever 52 occurs into the gap 44 under the action of the spring 56b. The ratchet teeth 52b of the lever 52 (Fig. 2 and 8) slides over the corresponding ratchet teeth 58b of the cam wheel 58, which is made possible by the axial play permitted by the spring 43. The ratchet teeth 52b is thus adjusted by 36 ° with respect to the ratchet teeth 58b. At the end of the opening command runs the end of the lever 52 on the track 40b, and the ratchet teeth 52b comes into engagement with the ratchet teeth 58a, whereby the cam wheel 58 is pivoted and is brought into the position of Fig.6, the opening of the contact 8a, 8b (or of the contact 9a, 9b for the other decoding body 45).

If a closing command is confirmed while contact 8a, 8b (or contact 9a, 9b) is ready to be closed

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sen is, the ratchet teeth 51b would be 35 ° (Fig. 9) go back without being able to come into engagement with the ratchet teeth 58a of the cam wheel 58 again. Of the Contact 8a, 8b or 9a, 9b would remain closed. The same would apply in the case of confirmation of an opening command the pawl toothing 52b go back by 35 ° without coming into engagement with the pawl toothing 58b (not shown).

Pate nt a η 3check

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Claims (8)

Claims 1. Receiving relays for use in round control systems in which a single transmitter sends command telegrams without a pilot wire, which are received synchronously by one or more vibrating tongue receiving relays connected in parallel to an electrical power supply network, the receiving relays optionally of at least two types can decode telegrams that differ by a short or long start-up pulse, characterized in that a vibrating tongue frequency selector (17) when receiving the first pulse of a command telegram actuates a release lever (34) which closes an excitation circuit which is controlled by one of a start-up cam (38) controlled contact (11a, 11b) and a motor (10) which drives a primary decoding body (60) shaped according to the image of the telegram and at least two secondary decoding bodies (40, 45) which are coupled to one another that the primary decoding body (60) is synch ron with the transmission of the telegram rotates and the secondary decoders. -er ^{(4: -;,} 45) rotate at a rotational speed that the speed of the primary decoding body is a multiple .3 (6G), Jass each secondary Decod ierlcörper (40, 45) with two gaps (42, 44); 46, 48), which are offset from one another by an angle which is proportional to the time interval reserved for the first pulse between two command pulses after dec, that of the two gaps (42, 44; 46, 48) of each secondary decoder body ( 40, 4 ^) two sensing levers (51, 52; 53, 54) are controlled, which act on a cam wheel (58, 59) to issue closing and opening commands, which determine the even and the odd, from the frequency selector ( 16) correspond to decoded pulses, 20 9 8 41/0685 and that a common pawl (57) is provided which the sensing levers (51, 52, 53, 54) in the absence of Pulses locked and withdrawn on receipt of an even or odd command pulse so that at least one of the sensing levers (51, 52, 53, 54) is actuated via the gap (42, 44, 46, 48) which is triggered by the command pulse is synchronous and the cam wheel (58; 59) closes an electrical contact (8a, 8b; 9a, 9b) in the event of an odd pulse and opens on an even impulse. 2. Receiving relay according to claim 1, characterized in that that the primary decoding body (60) has a first row of teeth (61a) which can be billed to form gaps (61) which correspond to the start-up pulses and command pulses of the correspond to the telegram to be decoded, and that on the release lever (34) a main pin (62) is attached, which when the first pulse is received in a start-up gap (6Oa) and into the interior of the hollow profile of the primary decoder body (60) occurs and exits when a gap (61) corresponding to a command pulse appears, so that the release lever (34) between the gaps (60a, 61) via the contact (11a, 11b) of the start-up cam (38) outgoing excitation circuit of the motor (10) keeps closed. 3. Receiving relay according to claim 2, characterized in that that the release lever (34) is optionally provided with an additional pin (63) which by the rotation of a Hollow profile (38b) of the starting cam (38) blocked is when the first pulse is short, so that the release lever (34) mechanically blocks the frequency selector (16) and this to the command pulses transmitted after a short pulse for the entire duration of the! telegram does not respond. 20 9 8 41/0685 4. Receiving relay according to claim 2 or 3, characterized in that that the primary decoder body (60) a second row of teeth (61b) which can be broken off to form gaps, which impulses the start-up and the Command pulses of the telegram to be decoded correspond, and that a parallel to the winding (14) of the Frequency selector (16) lying electrical contact (15a, 15b) is arranged so that when passing the Gaps are opened and outside the gaps is closed. 5. Receiving relay according to one of A _n claims 1 to 4, characterized in that each sensing lever (51, 52, 53, 54) and the associated cam wheel (58, 59) on the mutually facing side surfaces with cooperating axial ratchet teeth (e.g. 51a , 51b, 58a, 58b) which are designed so that they are brought into engagement with the tilting movement of the feeler lever corresponding to falling into a gap (42, 44, 4 $ 48) and with the contact of the feeler lever on the massive outer prodile of the secondary decoder body (40, 45) corresponding opposite tilting movement through the engagement of the ratchet teeth, the cam wheel (58, 59) is rotated by an angle which corresponds to the closing or opening of the associated electrical contact. 6. receiving relay according to claim 5, characterized in that the cam wheel (58, 59) has two axial ratchet teeth (e.g. 58a, 58b), which are arranged symmetrically to one another on one or the other side surface, that the two associated sensing levers (51, 52; 53, 54) have an axial ratchet toothing (e.g. 51b, 52b) which resiliently pressed against the corresponding ratchet teeth of the cam wheel (58, 59) that the ratchet teeth (e.g. 51b) of one feeler lever (e.g. 51) by half 209841/0685 that is proportional to the time between two command pulses Angle against the ratchet teeth (e.g. 52b) d ^ s other The sensor lever (e.g. 52) is offset so that the toothing of a sensor lever that has carried out an opening command, at the end of the rotation is in direct engagement with the corresponding toothing of the cam wheel, while the Toothing of the other! Feeler lever by half a tooth forward against the other toothing of the cam wheel in readiness is offset for the execution of a closing command and thereby the meshing of the teeth on the Cannot repeat a previously executed command at the end of the rotation. 7. Receiving relay according to claim 5 or 6, characterized in that that the secondary decoder bodies (40, 45) are coupled so that their "respective gaps (42, 44; 46, 48) are in phase in pairs, and one revolution of each secondary decoder body (40, 45) of the embodiment of an instruction corresponds to that of two consecutive possible commands is selected. 8. receiving relay according to claim 5 or 6, characterized in that the secondary decoding body (40, 45) with such * mutual displacement of their gaps (42, 44; 46, 48) are coupled that one revolution of each secondary decoder body to execute a four consecutive possible commands selected Command. 209841/0685 Blank page