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Directional servo valve with
mechanical position feedback
(Area of application according to the Explosion Protection
Directive 2014/34/EU: II 3G)
Type 4WS2EM 10...XL...
<Fill this space with our product fig-
ure>
R
TM
Operating instructions
RE29583-XL-B/09.20
Replaces: 01.18
Document no.: RA87650010_AA
English
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Table of Contents
Related Manuals for Bosch Rexroth 4WS2EM 10 Series
Summary of Contents for Bosch Rexroth 4WS2EM 10 Series
- Page 1 Directional servo valve with mechanical position feedback (Area of application according to the Explosion Protection Directive 2014/34/EU: II 3G) Type 4WS2EM 10...XL... Replaces: 01.18 Operating instructions Document no.: RA87650010_AA RE29583-XL-B/09.20 English <Fill this space with our product fig- ure>...
- Page 2 IT: La messa in servizio di questo prodotto può essere eseguita solo se si dispone del presente manuale d‘uso in una lingua ufficiale della UE conosciuta e se ne è stato compreso il contenuto In caso contrario rivolgersi al referente Bosch Rexroth o al punto di assistenza competente.
- Page 3 NL: U mag het product pas in bedrijf stellen, als deze bedieningshandleiding voor u beschikbaar is in een voor u begrijpelijke, officiële taal van de EU en als u de inhoud daarvan begrepen heeft. Is dit niet het geval, neem dan a.u.b. contact op met uw Bosch Rexroth contactpersoon of de servicepartner.
- Page 4 Our products are subject to a natural process of wear and aging. © All rights with Bosch Rexroth AG, also in case of applications for industrial property protection. It may not be reproduced or given to third parties without consent of Bosch Rexroth AG.
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Page 5: Table Of Contents
10.2 Inspection and maintenance 10.3 Maintenance schedule 10.4 Repair 10.5 Exchanging the filter element 10.6 Rectifying external leakages 10.7 Spare parts Disassembly and removal Disposal 12.1 Environmental protection 12.2 Return to Bosch Rexroth AG 12.3 Packaging 12.4 Materials used 12.5 Recycling RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... - Page 6 6/48 Extension and modification Troubleshooting 14.1 How to proceed for troubleshooting Technical data Appendix 16.1 List of addresses Declaration of conformity Index Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
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Page 7: About This Documentation
29583-XL-B 1.3 Representation of information Uniform safety instructions, symbols, terms and abbreviations are used to ensure quick and safe working with the product using this documentation. For a better understanding, they are explained in the following sections. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... - Page 8 Symbol Meaning If this information is not observed, the product cannot be used and/or operated optimally. ▶ Individual, independent action Numbered instruction: The numbers indicate that the actions must be carried out one after the other. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
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Page 9: Safety Instructions
Read this documentation completely and thoroughly before working with the product. ▶ Keep this documentation in a location where it is accessible to all users at all times. ▶ Always include the required documentation when you pass the product on to third parties. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... -
Page 10: Intended Use
Changes and/or modifications to the valve are not admissible, refer to chapter 13 "Extension and modification". Bosch Rexroth AG does not assume any liability for damage caused by improper use. The user assumes all risks involved with improper use. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... -
Page 11: Qualification Of Personnel
• Understanding of the additional importance of work permit systems and safe electrical separation regarding explosion protection. Bosch Rexroth offers measures supporting training in specific fields. Please find an overview of the training contents on the Internet at: http://www.boschrexroth.de/didactic... -
Page 12: General Safety Instructions
• Do not commission the product until you can be sure that the end product (for example a machine or system) in which the Rexroth product is installed complies with the country-specific provisions, safety regulations and standards of the application. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... -
Page 13: Product-Specific Safety Instructions
The valve controls movements in machines or systems. In case of mechanical and electric faults, e.g. failure of the energy supply, persons may be caught by the system, kicked away or bruised. ▶ During set-up of your circuit, observe functional safety e.g. according to EN ISO 13849. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... - Page 14 This reduces the stability of the valve mounting screws so that the valve may become loose and constitute a risk of injury. ▶ Exchange valves with corrosion damage at an early stage. ▶ Regularly check the surface protection on the valve and the valve mounting screws. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
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Page 15: Personal Protective Equipment
The machine end-user is obliged to check in the order confirmation whether the supplied valve complies with the required category and the corresponding zone. The machine end-user of the Bosch Rexroth valve is responsible that • the valve is only being used according to the intended use as defined in these operating instructions. -
Page 16: General Information On Damage To Property And Damage To Product
Ensure that no cleaning agents are able to penetrate the hydraulic system. Environmentally harmful hydraulic fluid! Leaking hydraulic fluid leads to environmental pollution. ▶ Immediately remedy possible leakage. ▶ Dispose of the hydraulic fluid in accordance with the currently applicable national regulations in your country. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... -
Page 17: Scope Of Delivery
▶ Check the scope of delivery for possible transport damage, see chapter 6 "Transport and storage". In case of complaints, please contact Bosch Rexroth AG, see chapter 16.1 "List of addresses". Accessories such as valve subplates are not included in the scope of delivery and must be ordered separately. See chapter 7.6 "Required accessories". -
Page 18: Product Identification
Explosion Protection Directive 2014/34/EU Mark for the protection type according to Ex ic IIC T4 Gc EN IEC 60079-0 / EN 60079-11 and IEC 60079-0 / IEC 60079-11 IECEx Certificate of Conformity IECEx BVS 18.0045X Rexroth QR code QR code Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... - Page 19 Potentially explosive atmospheres in which an explosive atmosphere due to stirred dust (= device group II) is normally not present or occurs only rarely or only for a short period of time. Corresponds to zone 22 according to Directive 1999/92/EC. Normal safety level. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 20 It provides information on the suitability of the hydraulic product for the use in a particular potentially explosive atmosphere due to explosive gasses, mists or vapors. Table 8: Temperature classes for device group II Temperature class Maximum permissible surface temperature 450 °C 300 °C 200 °C 135 °C 100 °C 85 °C Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
- Page 21 Type of Meaning Relevant for protection non-electrical Electrical operating devices equipment Ignition source monitoring Structural safety Flameproof enclosure Increased safety Flow restricting enclosure Intrinsic safety Liquid immersion Oil immersion Pressurized enclosure Powder filling Encapsulation Intrinsic safety RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
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Page 22: Transport And Storage
Danger of cut injury! ▶ Wear suitable protective equipment for the transport of the safety valve. Further information regarding the transport is available from Bosch Rexroth, see chapter 16.1 "List of addresses". Report any transport damage to your responsible sales contact person within one week. The addresses of the sales subsidiaries can be found on the Internet on: http:/www.boschrexroth.com/adressen... - Page 23 Pack the valve with a desiccant air-tightly in corrosion protection film. Store the valve protected against impacts. ▶ In each case, please observe any applicable provisions and laws regarding the handling of substances hazardous to water or to health. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
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Page 24: Installation
It is imperative to ensure absolute cleanliness. The valve must be protected from dirt during installation. Contamination of the hydraulic fluid may considerably reduce the life cycle of the valve. ▶ Observe the installation position specified in the "Data sheet 29583-XL". Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... -
Page 25: Prior To Assembly
You only require standard tools to assemble the valve. 7.6 Required accessories The following accessories are recommended for the connection of the valve. These accessories can be ordered separately from Bosch Rexroth: Subplates Subplates with dimensions for valves with porting pattern according to ISO 4401 are listed in the "Data sheet 45100". -
Page 26: Assembling The Valve
Only then is the unobjectionable functioning of the valve guaranteed. With an external pilot oil supply, make sure that it is flushed, as well. Also observe the operating instructions of the device and/or system into which the valve is installed. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... - Page 27 Install a pressure differential-resistant pressure filter without bypass, if possible with integrated clogging indicator, directly in front of the valve. During the flushing procedure, check all filters in short intervals and exchange the contaminated filter elements, if necessary. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 28 Hydraulic fluid may leak during the assembly and disassembly of the valve. Consequently, persons may slip or fall. ▶ After the disassembly, provide the bores containing the hydraulic fluid with suitable closing elements. ▶ Immediately remove any hydraulic fluid that has leaked out. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
- Page 29 12.5 Nm ± 1.5 Nm (with a friction = 0.09...0.14). This tightening torque refers to the maximum coefficient of µ total admissible operating pressure. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 30 Mark all checked fittings, e.g. using a permanent marker. Make sure that all pipes and hose lines and every combination of connection pieces, couplings or connection points with hoses or pipes are checked for their operational safety by a person with appropriate knowledge and experience. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
- Page 31 Mating connectors are available as accessories, see chapter 7.6 "Required accessories". When selecting the mating connector, observe the safety instructions in this chapter. ▶ The temperature rating of the lines used must be at least 20 K higher than the ambient and fluid temperature. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 32 When routing the control line, make sure it is strain-relieved. Fit the mating connector on the connector and screw it on tightly including the cap nut. The connection between mating connector and connector may only be established and interrupted in a de-energized condition. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
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Page 33: Commissioning
For the control and functional test, special test devices are available. Refer to chapter 7.6 "Required accessories". Performing a leak test ▶ Ensure that no hydraulic fluid leaks on the valve or on the connections during operation. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... -
Page 34: Operation
Changing the settings at the valve is not admissible. For information on the operation, please refer to the operating instructions for the hydraulic system into which the valve is installed. If errors occur, refer to chapter 14 "Troubleshooting". Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... -
Page 35: Maintenance And Repair
Uncontrolled machine movements! Risk of injury due to maintenance work at an activated machine. ▶ Unless expressly prescribed otherwise, deactivate the machine via the main switch, lock it and remove the key before carrying out any work. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... -
Page 36: Maintenance Schedule
"Rectifying external leakages". 10.3 Maintenance schedule Valves are low-maintenance provided that they are used as intended. To ensure that the valve functions reliably for a long time, Bosch Rexroth recommends checking the hydraulic system and the valve regularly. 10.3.1 Checking for leakages Check the valve for external leakages. -
Page 37: Repair
Screw out the filter screw (1) (wrench size 22). Pull the filter element (2) out of the filter screw (1) using an M4 screw. Clean the filter screw. Do not clean the filter element but replace it with a new one. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... -
Page 38: Rectifying External Leakages
Assemble the new sealing device. 10.7 Spare parts Filter element with Table 14: Filter element FKM seal Material number Filter element with FKM seal R961001950 Standard seal kit Table 15: Standard seal kit Material number Standard seal kit NG10 R961001590 Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20... -
Page 39: Disassembly And Removal
A disassembly of the valve cap or the connector will lead to loss of the explosion protection! ▶ Never disassemble the valve cap or connector. CAUTION Falling of an incompletely disassembled valve! An incompletely disassembled valve may fall down and cause injury. ▶ During disassembly, secure the valve against falling. RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG... -
Page 40: Disposal
Please observe the following information for the environmentally-friendly disposal of the valve. 12.2 Return to Bosch Rexroth AG The hydraulic products manufactured by us can be returned to us for disposal purposes at no cost. There must be no inappropriate foreign substances or third- party components when products are returned. -
Page 41: Packaging
The materials for disposable packaging are mostly cardboard, wood, and expanded polystyrene. They can be recycled without any problems. For environmental reasons, disposable packaging should not be used for returning products to Bosch Rexroth. 12.4 Materials used Hydraulic components from Bosch Rexroth do not contain any hazardous materials that could be released during the intended use. - Page 42 If so: what type of changes or work? – Has the valve and/or the machine been used as intended? – How did the fault become apparent? ▶ Try to get a clear idea of the cause of error. Ask the direct (machine) operator. Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
- Page 43 15 Technical data For the technical data of your valve please refer to "Data sheet 29583-XL". RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 44 Zum Eisengießer 1 97816 Lohr am Main Germany Phone +49 (0) 9352/40 30 20 Email my.support@boschrexroth.de The addresses of our sales and service network and sales organizations can be found at www.boschrexroth.com/adressen Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
- Page 45 Declaration of conformity 45/48 17 Declaration of conformity RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 46 Installation conditions Technical data Intended use Temperature classes Test device ▶ L Transport and storage List of addresses Troubleshooting Type of protection ▶ M Maintenance Maintenance schedule Materials used Mating connector Modification ▶ N Name plate Bosch Rexroth AG, 4WS2EM 10...XL..., RE29583-XL-B/09.20...
- Page 47 Index 47/48 RE29583-XL-B/09.20, 4WS2EM 10...XL..., Bosch Rexroth AG...
- Page 48 Bosch Rexroth AG Zum Eisengießer 1 97816 Lohr am Main Germany Tel: +49 (0) 9352/40 30 20 my.support@boschrexroth.de www.boschrexroth.com Subject to change without notice Printed in Germany RE29583-XL-B/09.20...