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Introduction Notes on handling the product Description SIWAREX WL270 Application planning Mounting plates CP-S SA Installation Service and maintenance Operating Instructions Technical data Dimension drawings Ordering data Appendix 04/2009 A5E02522341B...
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Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
Table of contents Introduction..............................5 Purpose of this documentation ......................5 History ............................5 Scope of delivery ...........................5 Environmental protection .......................5 Notes on handling the product ........................7 Notes on handling the product .......................7 Description..............................9 Application............................9 3.1.1 Use of the mounting plates ......................9 3.1.2 Lifting protection...........................10 3.1.3...
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Table of contents Technical data ............................29 Dimension drawings ..........................31 Dimensional drawing of the mounting plates ................31 Dimension drawing of the grounding cable................. 32 Ordering data............................33 Appendix..............................35 Technical support........................35 Index................................ 37 CP-S SA Operating Instructions, 04/2009, A5E02522341B...
Introduction Purpose of this documentation These instructions contain all the information you need for commissioning and using the device. It is aimed at persons who install the device mechanically and commission it, as well as at service and maintenance engineers. History The following versions of this documentation have been released to date.
All obligations on the part of Siemens AG are contained in the respective sales contract, which also contains the complete and solely applicable liability provisions. The provisions defined in the sales contract for the responsibility for defects are neither extended nor limited by the remarks in this document.
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EC directive 94/9 EC (ATEX). Trademarks SIWAREX ® is a registered trademark of Siemens AG. All other names appearing in these instructions may be trademarks; use of such names by third parties for their own purposes may infringe upon owners rights.
● Simple installation of the pressure piece set and the load cell Mounting plates for SIWAREX WL270 CP-S SA The mounting plates for SIWAREX WL270 CP-S SA load cells are especially well suited for installation in vehicle scales, platform weighing machines, and container weighers.
Description 3.1 Application 3.1.2 Lifting protection The lifting protection prevents the load bearing implements from being lifted off of the load cells. If there is a risk of the load bearing implement being lifted or toppled, then lifting protection is required.
Description 3.2 Layout and function Layout and function 3.2.1 Design and principle of operation of the mounting plates Design The mounting plates comprise the following components: ● Upper mounting plate ① ● Lower mounting plate ⑥ Together with the load cell and the pressure piece set the mounting plates represent a self- centering bearing unit.
Description 3.2 Layout and function Principle of operation The mounting plates ensure that the pressure piece set is securely positioned with the load cell. Figure 3-4 Sectional view 3.2.2 Design and function of the grounding cable Design The grounding cable consists of a fine-gauge copper wire with a cross-section of 50 mm and two lugs, Ø...
Dummies might be designed as follows: ● A copy of the installation unit by means of a welded construction for installation work ● Use of a SIWAREX WL270 compact installation unit A copy of the installation unit by means of a welded construction A piece of pipe or some other steel profile is welded between two plates with the hole pattern for the fixing screws.
Application planning 4.3 Load pick-up Load pick-up Mounting surfaces For the mounting surfaces of the mounting plates, the following requirements apply: ● The positional and angular deviations of the mounting surfaces to each other should correspond to the general tolerances for welded constructions in EN ISO 13920. ●...
Application planning 4.4 Overload protection Overload protection CAUTION Irreparable faults and damage to the load cells When using load cells with small rated loads, always provide overload protection in order to protect the cells from becoming damaged. This applies both to the measuring direction and the transverse direction.
Application planning 4.5 Guide elements Guide elements Use the guide elements in the following cases: ● A weight should be determined under the influence of transverse forces. ● Horizontal movement of the load bearing implement should be prevented. A change in the distance between the support points, for example as a result of expansion of the load bearing implement due to heat, must not lead to mutual tensioning of the guide elements.
Application planning 4.6 Protection against explosion Three guide elements are sufficient to statically fix a weighing platform or container. NOTICE Weighing errors With four guide elements, there is a risk of the guide elements mutually tensioning, which in turn induces weighing errors. If you nevertheless want to use four guide elements, the guide elements must be installed with a sufficient amount of play.
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Application planning 4.6 Protection against explosion CP-S SA Operating Instructions, 04/2009, A5E02522341B...
Installation Safety information/instructions Load cells are precision components and must therefore be handled carefully. Particular care must be taken during transport and installation. WARNING Danger to life from falling loads • Load cells are not machine components which have been constructed with the normal safety factors.
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Installation 5.1 Safety information/instructions CAUTION Damage to load cells through incorrect mounting • Provide indented claws or crane eyebolts on the load carrier to ensure that hoisting gear can be used safely. • Load cells must never be overloaded. Put the load carrier down slowly for this reason. With load cells of smaller rated loads in particular, there is a risk of stretching the load cell bodies when attaching force transfer devices, e.g.
Installation 5.2 Installing mounting plates Installing mounting plates 5.2.1 General installation information The installation conditions vary widely. The dead load of the load bearing implement can be very low or relatively high. You might be dealing with a container, platform or a roller conveyor.
Installation 5.2 Installing mounting plates 5.2.3 Preparing the load cell and pressure piece set CAUTION Damage to the load cell Observe the operating instructions for the load cell. When mounting the load cell, ensure that you do not damage or cut the cables of the load cell.
Installation 5.2 Installing mounting plates 5.2.4 Preparing the mounting plates 1. Unpack the mounting plates. The delivery unit comprises one mounting plate. Figure 5-3 CP-S SA mounting plates 2. Read the accompanying information sheet. 3. Check the delivered unit. 5.2.5 Installing the load cell, pressure piece set and mounting plates WARNING Death or serious bodily injury...
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Installation 5.2 Installing mounting plates Installing the load cell and pressure piece set CAUTION Personal injuries, damage to the load cells Insufficiently secured loads can fall and cause injuries or material damage. Therefore, appropriate lifting tools must be used to lift the load bearing implement. The corresponding safety regulations must be observed.
Installation 5.2 Installing mounting plates Procedure Figure 5-4 Installing the load cell and pressure pieces 1. Grease the bearing surfaces ① of the load cell with a bearing lubricant. 2. Insert the load cell into the mounting plates together with the pressure pieces. 3.
Installation 5.3 Installing the grounding cable Installing the grounding cable 1. Prepare a permanently contacting bolted connection such as M10 on the load bearing implement and foundation for securing the grounding cable. 2. Screw the grounding cable tight. Dismantling For the disassembly of load cells, the same safety rules and requirements apply as for installation and assembly.
Service and maintenance Servicing and maintenance Important notes on cleaning CAUTION Damage to load cells, measurement errors Dirt must not be allowed to accumulate in the vicinity of a load cell. Do not subject cable glands, sealing elements and flat seals directly to the jet from a high- pressure hose.
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Service and maintenance 6.1 Servicing and maintenance Grounding cable ● Check the connecting points at regular intervals for corrosion and conductivity. CP-S SA Operating Instructions, 04/2009, A5E02522341B...
Technical data Mounting plates Size Value For a rated load of For a rated load of 10 t; 20 t; 30 t 50 t Maximum lateral deflection with load cell ± 3 mm ± 3 mm Restoring force per millimeter of lateral deflection 0.5% per mm 2% per mm of the top plate in % of the applied load with load...
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Technical data CP-S SA Operating Instructions, 04/2009, A5E02522341B...
Dimension drawings Dimensional drawing of the mounting plates The following dimensional drawing shows the SIWAREX WL270 CP-S SA mounting plates. All dimensions are in millimeters. Figure 8-1 Dimensional drawing: CP-S SA mounting plates CP-S SA Operating Instructions, 04/2009, A5E02522341B...
Dimension drawings 8.2 Dimension drawing of the grounding cable Dimension drawing of the grounding cable Figure 8-2 Dimension drawing of the grounding cable CP-S SA Operating Instructions, 04/2009, A5E02522341B...
Ordering data Mounting plates You need two mounting plates for installing a load cell. The delivery unit comprises one mounting plate. The load cells and pressure piece sets are not included. Mounting plate Designation Rated load Order No. CP-S SA 10 t to 50 t 7MH5708-5PB00 Grounding cable...
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Ordering data CP-S SA Operating Instructions, 04/2009, A5E02522341B...
● Information about field service, repairs, spare parts and lots more under "Services." Additional Support Please contact your local Siemens representative and offices if you have any questions about the products described in this manual and do not find the right answers.
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Appendix A.1 Technical support CP-S SA Operating Instructions, 04/2009, A5E02522341B...