Multi-chambered volume synchroniser Type MZB

Transcription

1 HYDRAULIC Multi-chambered volume synchroniser Type MZB Date of issue:

2 Table of contents Description of the multi-chambered volume-synchroniser General points Description of function Synchronism Application Dimensions Number of chambers Pressure drop in the MZB Speed of MZB movement Standard filler and safety block Setting and resetting the pressure valves Noise during operation Servicing and maintenance Final position acknowledgement Slight pressure transmission with the MZB Leaking oil connection Screw connections and SAE connections Preference for standard travel Technical data MZB-0-50/ MZB-0-140/ MZB-0-180/ MZB-0-320/ Description of the filler and safety blocs Scale diagram for MZB and MZB and 11 Scale diagram for MZB and MZB and 13 Scale diagram for MZB and MZB and 15 Scale diagram for MZB and MZB and 17 Scale diagram for MZB and MZB and 19 Scale diagram for MZB and MZB and 21 Scale diagram for MZB and MZB and 23 Dimensions, data and wiring diagram for the filler and safety blocs Filler and safety block B26/ Filler and safety block B26/ Hydraulic circuits of filler and safety-blocs with additional functions Jahns Regulatoren GmbH 2001 Reprinting, even of sections of this publication, is only allowed with prior permission from Jahns Regulatoren GmbH All information included in this brochure has been carefully compiled and checked. However, we accept no responsibility for incomplete or incorrect information given in this publication. With the publication of this new edition, previous issues cease to be valid. We reserve the right to make alterations to this publication. Page 2

3 Description of the multi-chambered volume synchroniser type MZB General description For 6 years already, Jahns has been supplying the linear volume synchroniser MLH for high-precision, synchronous operation. During this period, it has become a well-known item of equipment. There is a separate catalogue available for this, which you may already have or, if not, you can request it. Two years ago, the multi-chambered volume synchroniser MZA was added to our supply list. The synchronism which can be achieved with the new MZB is just as good as the MLH and the MZA and, therefore, much better than is the case with all flow dividers - please refer to our publications Hydraulic oil flow dividers and New gearflow dividers. It differs from the otherwise very similar MLH in terms of construction. Design and description of function It is already clear from the name multi-chambered volume synchroniser what this equipment is and what it does. Instead of having just a single cylinder piston forming one piston chamber and one piston rod chamber with the wall of the cylinder, the base of the cylinder, the front cylinder head and the piston rod, the double MZB is made up of two piston rod chambers for the output of oil, a piston rod chamber for oil input and a piston chamber for oil input. There is just one disadvantage for the multi-chambered volume synchroniser resulting from this: with large volumes and more than three oil outlets, it becomes very long! This length is often a handicap. Help is once more provided by the linear travel cylinders MLH or a MZB, with an extra large diameter and only very small travel. For the MZB, piston diameters have meanwhile become available of up to 320 mm (!), as a standard item, and, if requested, up to 600 mm. With such possibilities, the MZB will also counter a solution which is much too long. The advantage of the MZB is, on the other hand, that one can make better use of it when the length of the equipment is not important, but the external diameter is, in contrast, important. For example, even a MZB with a length of 10m, mounted in the chassis of a lorry, will provide a better solution than a MLH with a length of 2 m, which is however so large in diameter that there is simply no space available in the lorry chassis. The MLH requires, in addition to the dosing cylinders, a main cylinder which has, for example, double the diameter of the dosing cylinder in the case of the fourfold distributor. With regard to the cost of the main cylinder, broadly speaking, the MLH is more expensive than the MZB. The MZB is therefore first considered in fundamental considerations, above all, when using large dosing volumes, for which the large, additional main piston plays a greater role in the calculation. The function is almost identical with that of the MLH: the volume of oil in the MZB is forced into the working cylinders by the outward driven multi-chambered volume synchroniser. Consequently, it is also essential that the working cylinders always press on the fixed oil column. In this way, the entry of air by suction is prevented. What is, in general, very important are the filling and safety valve blocks which are also delivered by us with the equipment. Because of the significant pressure increase potential (which sometimes is also desired), depending on the relationship of chambers which are under pressure compared with more or less pressure-free chambers, this part of the block is just as important as the valve circuit for filling the space between the volume synchroniser and the working cylinder. In the case of the MLH, these blocks are to be elegantly, directly flanged-mounted. With the MZB, this is not possible, because of its constructional design. Block and distributor have to be joined externally by pipes. It is not absolutely essential that you buy the safety function with our filling and safety valve blocks, but at least a pressure safeguard for our maximum pressure values, with the specified maximum through flow current, is indeed very important. Synchronism What is important for synchronism is, of course, that the oil which is contained in the chamber has no air bubbles in it! Under ideal operating conditions, i.e. with the same loads on the working cylinders, the synchronism which is achieved is almost ideal. Errors only occur as a result of differences in tolerance of the cylinder components. These differences are minimal, due to the narrow tolerances. A further small source of error is due to the fact that the seals for avoiding the stick-slip effect Page 3

4 Description of the multi-chambered volume synchroniser type MZB are not one hundred percent free of leaking oil. All of these possible sources of error result in a synchronisation which cannot be put at 100%. The deviation from the ideal value is, however, hardly noticeable in practice. An error which cannot, however, be disregarded is that produced as a consequence of oil compression, when there are quite different loads on the working cylinders. A difference in pressure of 10 bar between two working cylinders will result in a difference in travel of 0.07%, with a difference of pressure of 100 bar between two working cylinders will result in a difference in travel of 0.7%. It is sufficient, therefore, to keep the pressure difference as low as possible by taking appropriate measures; for example, using pre-tensioning of the nonloaded working cylinders, by means of selecting low load pressures etc. The error resulting from compression remains the same over the travel, as the fixed volume does not change during travel. Application The main areas of application of the MZB are similar to those of the MLH. All equipment with precise travel and very small oil flows (indeed with < 0.1 l/min per chamber), travel devices with the smallest possible oscillations and vibration, e.g. theatre stages, roller equipment in the printing industry, and also in the construction of heavy machines, tippers, etc. can be operated with the highest synchronisation values. Dimensions The dimensions are given in the following tables. The maximally possible volumes are determined by the maximum piston diameter of 320 mm with a piston rod diameter of 110 mm for the series equipment and the maximum travels per chamber permitted for the application. Naturally, the maximum volumes will be reduced as a function of the number of chambers. The parameters specified in the information sheets are the dimensions which are currently available. In time, depending on requirements, the MZB will be further developed in the direction of larger volumes and more chambers. In this way, the maximum possible volumes in a special constructional form, with correspondingly longer delivery periods with V = 550 litres per chamber are planned and possibly to be achieved with a piston diameter of the MZB of approx. 650 mm. In addition, if sufficient numbers were requested, very small equipment, in particular for two-fold distribution could be developed. If you are interested in this development, please contact us. Number of chambers The equipment is basically designed for 2,3 and 4 chambers. Especially in the case of small dosing volumes, it is possible to construct with up to 12 chambers without problems and, should the need arise, special equipment with still more chambers would be possible. Please contact us if you require further information. Pressure drop with MZB A loss of pressure will only arise when the seals on both sides are acted upon. This is lower in comparison with radial flow distributors, but certainly higher than with the MLH. At the moment, too few measurement results are available to be able to make definitive statements. You should assume, at present, approx. 7 bar. Speed of MZB movement As a result of using cylinder seals with low friction, the MZA can be driven exceptionally slowly. Already with oil flows of < 0.1 l/min, stickfree movement is possible. The maximum oil flows are specified in subsequent data tables. Filling and safety block As the MZB can, without being noticed, become de-tuned after a large number of traverses, a large number of operating cycles can be made before an error compensation can be effected (reset) but, on the one hand, the system has to be filled in any case at the beginning and, on the other, effects such as oil leakage of the working cylinder may result, from time to time, in this reset being run. This takes place with the filling and safety block, which primarily has the function of limiting the pressure increase function of the MZB. Since one of the oil inflow chambers does not have a Page 4

5 Description of the multi-chambered volume synchroniser type MZB piston ring surface, but instead a full piston surface, the pressures in the inflow chambers are in equilibrium with those of the outflow chambers, which means that with a fourfold distributor, one has to assume that with three pressure-free dosing chambers, the pressure in the remaining chambers will increase to the fourfold value! In practice, it may happen that for a particular distance covered, the working cylinder runs empty (pressure-free) and then one single cylinder will be stopped by the occurrence of a load. Here is a typical example: empty running of a press with four cylinders and the sudden appearance of resistance for only one cylinder! The pressure valves installed in the filling and safety block have to prevent such a build up of pressure and the designer of the machine must ensure that the sudden build up of pressure is not so dynamic that the safety valves react too slowly and that the peak pressure, which is set for only milliseconds, increases beyond the permitted value. If the series safeguard in the block is not sufficient for the required dynamics of the machine in which the MZB is mounted, then safeguarding must be effected outside, with suitable fast and large pressure valves. Because of the importance of the dynamic build up of pressure, we also have two sizes of filling and safety blocks in our programme (information is given below). Important points described: Setting the pressure valves, filling and evacuation of air, reset volume adjustment, pressure ratios at the cylinder end positions correspond to those given in the catalogue MLH and can and should be read there. Noise during operation As is usually the case with cylinder movements, there is hardly any noise made during operation. Due to the lack of vibration and oscillation, the MZB can be used especially where the absence of such accompanying noises is absolutely essential; for example, in hospitals, theatre stages, etc. Servicing and maintenance Simple installation ensures a large measure of operating safety, combined with little maintenance work being required, which is basically limited to a periodic control of any losses due to leakage. It is essential that care is taken to ensure the purity of the oil, with regard to our pressure and check-valves. Precisely when operated for the first time, there are often cuttings in the equipment. If synchronisation is also not then achieved following successful filling, it is recommended that you check these valve for particles. The valves can be very easily removed from the block. If needed, a drawing of the block can be requested from us. If one does not care to entrust the maintenance personnel to exchange individual valves, then we would recommend also a separate filling and safety block as a reserve part. These blocks are constructed as elements in a sandwich design, so that an individual section for a chamber represents, as a replacement part, a good safeguard against problems during operation. With reference to this point, please read to the final section of this catalogue! No special equipment is needed for mounting the equipment. Especially in the case of heavy and large equipment, from time to time, it is an advantage that customers - even those in the farthest corner of the world - can make do with repairs. Acknowledgement of the final position This is produced by the driving out of the piston rod, as an accessory which is free of charge. Slight pressure transmission Since the MZB does not have a continuous piston rod on one side, there is a slight pressure increase, depending on the size of the equipment and the number of chambers, which, on the one hand, compensates for the loss of pressure and, on the other, often produces an undesired residual increase in pressure. The percentage increase is given in the following tables. Naturally, the pressure transmissions are dependent on the number of chambers and are the greatest when there are two chambers. For an additional charge, the MZB can be also be supplied with suitable piston rods on both sides. Under these conditions, this pressure transmission does not occur. Page 5

6 Description of the multi-chambered volume synchroniser type MZB Oil leakage connection The constructional design of the MZB, in contrast to the MLH, does not require an oil leakage connection. The oil leaking from the first chamber flows into the second chamber etc. Normal thread connections / special connections e.g. SAE The thread connections are relatively small in comparison with the size of the equipment. The reason for this is that, with most applications, the oil flows are not so great that larger connections would be needed. If requested, larger thread connections can be provided which does, however, have an effect on the thickness of the connecting flange. The same applies for SAE connections, whereby the connecting flanges are even thicker. Standard s for the MZB, in order to achieve shorter delivery times and better sales prices As can easily be appreciated, it is technically not difficult to realise every conceivable travel in the MZB up to some forced or natural limit. For reasons related to price and delivery, it would not be sensible, at all, to produce a large number of different travels, especially since one can, to a great extent, use quantity parts for a particular volume of the working cylinder without any disadvantage. The volume synchroniser does not then drive to the final position, because the working cylinders are already at the stop. This consequently has just the positive effect that all working cylinders come to the final position, even if a small leak were to arise somewhere in the connection (safety reserve). In the following tables, for each size there are first of all, in each case, two or three standard s with data and then a small selection of other possible volumes. Page 6

7 Technical data for the multiple-chambered volume synchroniser MZB.. 50/22 to MZB.. 140/45... The pressure increases specified in the following tables are justified by the fact that x piston ring surfaces of the dosing chambers (x-1) piston ring surfaces and a full piston surface face one another. Efficiency has not been considered. The percentage increase in pressure is stated in succession for 2,3 and 4 chambers. Type Chamber volume Pressure increase: Maximum oil flow Maximum operating Standard / (ccm) outlet / inlet [2-/3-/4- per section (l/min) pressure (bar) special chambers] MZB...-50/ % / 8% / 6% Standard MZB...-50/ % / 8% / 6% Standard MZB...-50/ % / 8% / 6% Standard MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-50/ % / 8 % / 6 % special MZB...-80/ % / 11% / 8% Standard MZB...-80/ % / 11% / 8% Standard MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB...-80/ % / 11 % / 8 % special MZB-140/ % / 4 % / 3 % Standard MZB-140/ % / 4 % / 3 % Standard MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special MZB-140/ % / 4 % / 3 % special Page 7

8 Technical data for the multiple-chambered volumesynchroniser MZB..-180/60 to MZB..-320/110 The pressure increases specified in the following tables are justified by the fact that x piston ring surfaces of the dosing chambers (x-1) piston ring surfaces and a full piston surface one another. Effenciency has not been considered. The percentage increase in pressure is stated in succession for 2, 3 and 4 chambers. Type Chamber volume cm³ Pressure increase outlet/inlet ( 2-/3-/4-chambers) Maximum oil flow per section (l/min) Maximum operating pressure (bar) Standard or special MZB-180/ % / 4 % / 3 % Standard MZB-180/ % / 4 % / 3 % Standard MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-180/ % / 4 % / 3 % special MZB-220/ % / 4,5 % / 3,5 % Standard MZB-220/ % / 4,5 % / 3,5 % Standard MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-220/ % / 4,5 % / 3,5 % special MZB-280/ % / 3,5 % / 2,5 % Standard MZB-280/ % / 3,5 % / 2,5 % Standard MZB-280/ % / 3,5 % / 2,5 % special MZB-280/ % / 3,5 % / 2,5 % special MZB-280/ % / 3,5 % / 2,5 % special MZB-280/ % / 3,5 % / 2,5 % special MZB-280/ % / 3,5 % / 2,5 % special MZB-280/ % / 3,5 % / 2,5 % special MZB-280/ % / 3,5 % / 2,5 % special MZB-320/ ,5 % / 4 % / 3 % Standard MZB-320/ ,5 % / 4 % / 3 % Standard MZB-320/ ,5 % / 4 % / 3 % special MZB-320/ ,5 % / 4 % / 3 % special MZB-320/ ,5 % / 4 % / 3 % special MZB-320/ ,5 % / 4 % / 3 % special MZB-320/ ,5 % / 4 % / 3 % special MZB-320/ ,5 % / 4 % / 3 % special MZB-320/ ,5 % / 4 % / 3 % special Page 8

9 Description of the filling and safety blocks in the element construction B26/X-40 and B26/X-140 Small element standard block B26/X-40 This is the more common design for a maximum oil flow of up to 40 l/min per chamber. As the synchronisation movements often take place really slowly, the smaller design B26/X-40 can be chosen even for large volumes. The size of the block does not necessarily depend on the size of the MZB. In contrast to the MLH, the block cannot be directly attached to the MZB with a flange construction. Therefore, the blocks with an element construction have to be connected by pipes externally with the MZB. Small element block for two chambers: B26/2-40 Small element block for three chambers: B26/3-40 Small element block for eight chambers: B26/8-40 The scaled diagrams for the two blocks B26/4-40 and B26/4-140 also have a circuit, whereby the circuit for the block and a MZB is practically obligatory, while the sketch of the unit only represents an example. Likewise, the type of working cylinder and the connecting of the MZB to the piston side of the working cylinder is not obligatory. Depending on the type of application, the circuit can be designed in a different way. What is important is that between the MZB and the working cylinders no valves which are subject to leaking oil are installed. Large element standard block B26/X-140 This is a less common construction for maximum oil flows of up to 140 l/min per chamber. When the synchronous movements proceed dynamically, this size should be chosen. With oil flows of > 140 l/min per chamber, we do not have an element block which we can supply. With larger regular requirements, these can be supplied, on request. The size of the block is not necessarily linked to the size of the MZB, but only with the through-flow per chamber in the safety valves. In contrast to the MLH, the block cannot be directly attached to the MZB with a flange construction. Therefore, the blocks with an element construction have to be connected by pipes externally with the MZB. Large element block for two chambers: B26/2-140 Large element block for three chambers: B26/3-140 Large element block for eight chambers: B26/8-140 The dimensional drawings for the block B16/4-140 also have a hydraulic circuit, whereby the circuit for the block and a MZB is practically obligatory, while the sketch of the powerunit only represents an example. Likewise, the type of working cylinder and the connecting of the MZB to the piston side of the working cylinder is not obligatory. Depending on the type of application, the wiring diagram can be designed in a different way. What is important is that between the MZB and the working cylinders no valves which are subjected to leaking oil are installed. Element blocs with additional cocks type B27/X-... Element blocs with additional cocks and 2/2-way-valve type B28/X-... Available for the small element blocs as well as for the large ones. See page 26 Page 9

10 Scale diagram for the twofold synchroniser MZB E1/E2 input, connections are joined each other G3/8" A1/A2 output, part flows G3/8" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 10

11 Scale diagram for the fourfold synchroniser MZB E1-E4 input, connections are joined each other G3/8" A1-A4 output, part flows G3/8" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 11

12 Scale diagram for the twofold synchroniser MZB E1-E4 input, connections are joined each other G1/2" A1-A2 output, part flows G1/2" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 12

13 Scale diagram for the fourfold synchroniser MZB Symbolic representation in accordance with DIN ISO 1219 E1-E4 input, connections are joined each other G1/2" A1-A4 output, part flows G1/2" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Page 13

14 Scale diagram for the twofold synchroniser MZB E1-E2 input, connections are joined each other G3/4" A1-A2 output, part flows G3/4" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 14

15 Scale diagram for the fourfold synchroniser MZB Symbolic representation in accordance with DIN ISO 1219 E1-E4 input, connections are joined each other G3/4" A1-A4 output, part flows G3/4" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Page 15

16 Scale diagram for the twofold synchroniser MZB E1-E2 input, connections are joined each other G1" A1-A2 output, part flows G1" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 16

17 Scale diagram for the fourfold synchroniser MZB Symbolic representation in accordance with DIN ISO 1219 E1-E4 input, connections are joined each other G1" A1-A4 output, part flows G1" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Page 17

18 Scale diagram for the fourfold synchroniser MZB E1-E2 input, connections are joined each other G1 1/4" A1-A2 output, part flows G1 1/4" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 18

19 Symbolic representations in accordance with DIN ISO 1219 Scale diagram for the fourfold synchroniser MZB E1-E4 input, connections are joined each other G1 1/4" A1-A4 output, part flows G1 1/4" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Page 19

20 Scale diagram for the twofold synchroniser MZB E1-2 input, connections are joined each other G1 1/2" A1-2 output, part flows G1 1/2" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 20

21 Scale diagram for the fourfold synchroniser MZB E1-4 input, connections are joined each other G1 1/2" A1-4 output, part flows G1 1/2" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 21

22 Scale diagram for the fourfold synchroniser MZB E1-2 input, connections are joined each other G1 1/2" A1-2 output, part flows G1 1/2" ME1-2 measurement connections or for evacuation of air, input G1/4" MA1-2 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 22

23 Scale diagram for the fourfold synchroniser MZB E1-4 input, connections are joined each other G1 1/2" A1-4 output, part flows G1 1/2" ME1-4 measurement connections or for evacuation of air, input G1/4" MA1-4 measurement connections or for evacuation of air, output G1/4" Symbolic representation in accordance with DIN ISO 1219 Page 23

24 Dimensions and wiring diagram for the filling and safety block with element construction B26/4-40 (for 4 sections) Symbolic representation in accordance with DIN ISO 1219 Fixing Screw Fixing Screw M8/16 deep E1-E4 filling connections M1-M4 measurement connection, output P pressure connection for block T tank connection Page 24

25 Dimensions and wiring diagram for the filling and safety block with element construction B26/4-140 (for 4 sections) Page 25

26 Filling and safety blocs in the element construction with additional functions Blocs with additional cocks type B27/x-... To avoid the oil-input at first set in action, when the fresh oil is still pollutioned specially by new cutted pipes a.s.o. Separation between bloc and volume-synchroniser, to find errors, bad functions, leakages. At that it is easier to exchange cartridge valves of the bloc. Drawing for B27/x-040 and B27/x-140 on request. Blocs width additional cocks and 2/2-way-valves type B28/x-... Additional solenoid operated 2/4-way-valves to an easier air-evading. Comfortable change of oil-volume during dynamic working. Refreshment of overheated oil. Drawing for B28/x-040 and B28/x-140 on request. Seite 26

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28 Regulatoren GMBH Sprendlinger Landstrasse 150 D Offenbach, Germany Telephone +49 (0 69) Fax +49 (0 69)