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Related Manuals for Siemens SIWAREX R
Summary of Contents for Siemens SIWAREX R
- Page 1 SIWAREX R Load Cells Operating Instructions Edition 06/2009...
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Page 2: Table Of Contents
Service ..................... 19 Care and Maintenance..............19 Troubleshooting ................19 Technical Data................. 22 Functional Data................. 22 Unit Version ..................24 Explosion Protection ................. 25 Electromagnetic Compatibility............26 Dimensions ..................27 Ordering Data .................. 34 SIWAREX R Load Cells Operating Manual A5E00159640... -
Page 3: Safety Instructions
They must be authorized and qualified to install, start and maintain devices, systems and circuits in accordance with national safety rules and regulations. Copyright © Siemens AG 2009 All rights reserved Disclaimer of Liability The reproduction, transmission or use of this document or its We have checked the contents of this manual for agreement with contents is not permitted without express written authority. -
Page 4: General Information
The particular contract of sale determines the sum of obligations to be met by Siemens and the guarantee regulation container therein is complete and is the sole regulation that shall apply. This contractual guarantee regulation is neither extended nor limited by the information provided in this document. -
Page 5: Technical Description
Technical Description Area of Application SIWAREX R load cells are used for static and dynamic measurements of forces and weights. They can be used for almost all applications in industrial weighing technology. These may be for example: • container, hopper or platform scales, •... - Page 6 Figure 1-2 Principle diagram of a Wheatstone bridge The SIWAREX R load cells are usually made of high-grade steel and are welded hermetically sealed. This provides high corrosion protection and protection rating. Most series are licensed for use in scales with mandatory calibration of class III according to DIN EN 45501 and comply with OIML R60 3000d.
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Page 7: System Configuration
• by setting down the load in free fall, • when persons are leaning/standing on the scales, • by wind forces on the side of a silo facing away from the wind. SIWAREX R Load Cells Operating Manual A5E00159640... - Page 8 The deflections to be installed should correspond to the principles used in weighing technology. Ball-jointed deflections are available for most SIWAREX R combi- installation units. Ball bolt deflectors up to a transverse load of 1000 kN are available on request.
- Page 9 For protection against undesirable electrical currents such as they occur when welding or from lightning, the load cells must be bridged with a highly flexible grounding cable (e.g. SIWAREX R grounding cable 7MH3 701-1AA1). The substructure must withstand the planned loads. The application surface must have a roughness of a max.
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Page 10: Installation/Assembly
Installation/Assembly Installation SIWAREX R load cells may only be assembled and connected by qualified personnel. If a scales is equipped with a single load cell, this can be connected directly to the weighing module if space allows. To bridge greater distances the connecting cable can be extended through a junction box. - Page 11 If load cells with 4-wire connecting cables are used, two bridges must be inserted additionally: Bridge 1: EXC- to SENSE- Bridge 2: EXC+ to SENSE+ Load cells Junction box Weighing module Figure 2-1 Parallel connection in 4-wire technology SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 12 Edition 06/2009 Installation/Assembly Load cells Junction box Weighing module Figure 2-2 Parallel connection in 6-wire technology SIWAREX R Load Cells Operating Manual A5E00159640...
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Page 13: Assembly
Load cells are high-precision components and must be handled with care especially during transportation and assembly. CAUTION Mechanical shock or dropping can cause irreparable damage to the load cell. Load cells may not be carried by the connecting cables. SIWAREX R Load Cells Operating Manual A5E00159640... - Page 14 The load cell seat must be horizontal, completely level and, like the load cell base, absolutely clean. The contact surfaces of the force applications must be lubricated with high- performance grease. SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 15 When these measures are taken it must be considered that the force application also needs to be well sealed at the top of the load cell to effectively prevent penetration by moisture. SIWAREX R Load Cells Operating Manual A5E00159640...
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Page 16: Disassembly
Relieve load on the load cell and remove carefully without using force. • Do not cut the cable if the load cell is to be used again or sent in for repair. • Do not carry or pull the load cell by the cable. SIWAREX R Load Cells Operating Manual A5E00159640... -
Page 17: Commissioning
Measure output resistances R of the LC or take them from the data sheet LC 1 = 1004.52 Ω LC 2 = 1003.64 Ω LC 3 = 1010.70 Ω LC 4 = 1028.12 Ω SIWAREX R Load Cells Operating Manual A5E00159640... - Page 18 SIG + SIG - SIG + SIG - SIG + SIG - SIG - SIG + EXC- EXC- EXC- EXC- EXC- 0VDC Ω Ω Ω SIG+ SIG- Figure 3-2 Circuit diagram reference load adjustment SIWAREX R Load Cells Operating Manual A5E00159640...
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Page 19: Service
Supply the load cell to be tested with approx. 10V DC (weighing module or external power supply). • Measure voltage between SIG+ and SIG-. • Divide measured voltage by the feed voltage. The result must match the value in the data sheet. SIWAREX R Load Cells Operating Manual A5E00159640... - Page 20 1. Dynamic overloading, e.g. by accidental falling of a relatively small weight onto the load carrier from a great height. Possible remedies: • Fit shock-absorbing components, e.g. elastomer bearings • Overdimension the load cells SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 21 Install deflectors • Install pendulum limits or set closer together. NOTE Only send in defective load cells to our repair workshop with an exact description of the error. This makes troubleshooting and analysis easier. SIWAREX R Load Cells Operating Manual A5E00159640...
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Page 22: Technical Data
Current calibration: nominal characteristic value and output resistance are adjusted so that the output current is calibrated within 0.05 % of a reference value. This makes it easier to connect several load cells in parallel. Optional EEx(d) version on request (only 40/60 t) SIWAREX R Load Cells Operating Manual A5E00159640... - Page 23 Current calibration: nominal characteristic value and output resistance are adjusted so that the output current is calibrated within 0.05 % of a reference value. This makes it easier to connect several load cells in parallel. Optional See the data sheet for technical data of unlisted load cells. SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 24 Current calibration: nominal characteristic value and output resistance are adjusted so that the output current is calibrated within 0.05 % of a reference value. This makes it easier to connect several load cells in parallel. Optional See the data sheet for technical data of unlisted load cells. SIWAREX R Load Cells Operating Manual A5E00159640...
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Page 25: Unit Version
The above specifications do not apply for the K series and load cells outside the standard scope of delivery. The housing of the SIWAREX R high-load cells of the K series are made of varnished steel. Descriptions of load cell models not belonging to the standard delivery program can be found in the respective data sheet. -
Page 26: Electromagnetic Compatibility
- the signal cable must be laid separately from cables with voltages > 60 V or high currents. - the vicinity of large electrical installations must be avoided. - shielded cables must be used. - proper grounding must be observed. SIWAREX R Load Cells Operating Manual A5E00159640... -
Page 27: Dimensions
Edition 06/2009 Technical Data Dimensions Nennlast ØA ØB ØC +0,1 10 – 200 kg 23,0 20,0 +0,1 350 kg 10,3 10,3 24,0 19,0 Figure 5-1 BB series SIWAREX R Load Cells Operating Manual A5E00159640... - Page 28 ØL +0,2 0,5 – 2 t 203,2 36,5 98,4 63,5 19,1 30,2 36,5 11,9 47,6 17,5 101,6 +0,2 235,0 47,5 123,8 66,7 20,6 41,3 47,6 15,8 69,9 25,5 111,2 Figure 5-2 SB series SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 29 60, 130, 280 kg 15,1 55,5 0,5, 1 t 17,5 2, 3,5, 5 t 17,5 10 t 29,1 24,9 17,5 13 t 29,1 24,9 Figure 5-3 RN series 60 kg to 13 t SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 30 Edition 06/2009 Technical Data Rated load ØA ØC 28 t 35,9 60 t 47,9 Figure 5-4 RN series 28 und 60 t SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 31 11 deep 40 t; 60 t 105,0 127,0 34,0 82,5 11,0 87,0 58,7 M20x2,5 20 deep 100 t 152,4 184,2 72,3 123,8 23,6 21,8 108,2 79,2 M20x2,5 20 deep Figure 5-5 CC series SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 32 Edition 06/2009 Technical Data Rated load Ød ØD 2,8t 16,7 16,7 13 t 24,5 28 t 63,5 60 t 52,7 76,5 130 t 77,5 280 t Figure 5-6 K series SIWAREX R Load Cells Operating Manual A5E00159640...
- Page 33 Edition 06/2009 Technical Data Figure 5-7 SP series See data sheet for dimensions of unlisted load cells. SIWAREX R Load Cells Operating Manual A5E00159640...
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Page 34: Ordering Data
Length tolerance: +/- 100 mm; cable length 20 m or more: Explosion protection +/- 300 mm. • Without • With degree of protection EEx ib II C T6 for Furhter models of load cells on inquiry. connection to intrinsically-safe circuits SIWAREX R Load Cells Operating Manual A5E00159640...