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Siemens SIWAREX JB Operating Instructions Manual

Junction boxes
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Weighing systems
Junction boxes
SIWAREX JB
Operating Instructions
7MH5001-0AA20 SIWAREX JB Aluminum
7MH5001-0AA00 SIWAREX JB Stainless steel
7MH5001-0AA01 SIWAREX JB Stainless steel Ex
12/2017
A5E43011851-AA
___________________
Introduction
___________________
Safety information
___________________
Description
___________________
Application planning
___________________
Installing/mounting
___________________
Connecting
___________________
Service and maintenance
___________________
Technical data
___________________
Dimension drawings
___________________
Ordering data
___________________
Appendix
1
2
3
4
5
6
7
8
9
10
A

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Table of Contents
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  Summary of Contents for Siemens SIWAREX JB

  • Page 1 SIWAREX JB ___________________ Installing/mounting ___________________ Connecting Operating Instructions ___________________ Service and maintenance ___________________ Technical data ___________________ Dimension drawings ___________________ Ordering data ___________________ Appendix 7MH5001-0AA20 SIWAREX JB Aluminum 7MH5001-0AA00 SIWAREX JB Stainless steel 7MH5001-0AA01 SIWAREX JB Stainless steel Ex 12/2017 A5E43011851-AA...
  • Page 2 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.
  • Page 3: Table Of Contents

    Basic safety instructions ......................23 Wiring diagrams ........................25 6.2.1 Load cells with four-wire system ..................... 25 6.2.2 Load cells with six-wire system ....................27 Connecting junction boxes ...................... 28 Connecting the cable ......................29 SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 4 Dimension drawing stainless steel enclosure ................ 37 Dimension drawing aluminum enclosure ................38 Ordering data ............................39 10.1 Accessories ..........................39 Appendix .............................. 41 Technical support ........................41 Certificates ..........................41 Index ..............................43 SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 5: Introduction

    Product compatibility The following table describes compatibility between manual edition, device revision, and the engineering system. Manual edition Comment Product compatibility Compatibility with device integra- tion package 12/2017 First edition 7MH5001-0AA20, 7MH5001- 0AA00, 7MH5001-0AA01 SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 6: Checking The Consignment

    Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure...
  • Page 7: Transportation And Storage

    The sales contract contains all obligations on the part of Siemens as well as the complete and solely applicable warranty conditions. Any statements regarding device versions described in the manual do not create new warranties or modify the existing warranty.
  • Page 8 Introduction 1.7 Notes on warranty SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 9: Safety Information

    These include, for example: ● National Electrical Code (NEC - NFPA 70) (USA) ● Canadian Electrical Code (CEC) (Canada) Further provisions for hazardous area applications are for example: ● IEC 60079-14 (international) ● EN 60079-14 (EC) SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 10: Conformity With European Directives

    Due to the large number of possible applications, each detail of the described device versions for each possible scenario during commissioning, operation, maintenance or operation in systems cannot be considered in the instructions. If you need additional information not covered by these instructions, contact your local Siemens office or company representative. Note...
  • Page 11: Use In Hazardous Areas

    There is a risk of explosion. • Connect the device with type of protection "Intrinsic safety" solely to an intrinsically safe circuit. • Observe the specifications for the electrical data on the certificate and/or in Technical data (Page 33). SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 12 Safety information 2.3 Use in hazardous areas SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 13: Description

    Description Applications The SIWAREX JB junction box is used in weighing systems with extra-low voltages ≤ 30 V. The SIWAREX JB junction box is used to connect load cells to the electronic weighing system. You can connect up to four load cells in parallel in a junction box.
  • Page 14 Description 3.1 Applications If you have more than four load cells, connect an additional SIWAREX JB junction box in parallel using a cross-connection. The extension set is required for this, see Accessories (Page 39). The cross-connection allows you to connect up to three load cells in the first junction box.
  • Page 15: Design

    EMC cable gland for the ⑦ ⑧ Optional: Nameplate with information connecting cable of a load cell on the hazardous area ③ ⑨ Screw for cover (4x) Mounting flange for equipotential-bonding conductor Figure 3-3 Stainless steel enclosure SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 16: Aluminum Enclosure

    ② ⑤ ⑥ Back with nameplate Plastic cable gland for the ⑦ ⑧ connecting cable a load cell ③ ⑨ Screw for cover (4x) Mounting screw for equipotential-bonding conductor Figure 3-4 Aluminum enclosure SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 17: Nameplates

    ATEX/IECEx marking for hazardous area Approvals ⑪ ⑭ Permitted ambient temperature for the hazardous area of ATEX symbol the corresponding temperature class ⑫ CE mark Figure 3-6 Example nameplate with information on the hazardous area SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 18 Description 3.3 Nameplates SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 19: Application Planning

    The cable glands are made of nickel- plated brass. The aluminum SIWAREX JB junction box is equipped with plastic cable glands as standard. The connecting cables of the load cells are fed into the enclosure through plastic cable glands.
  • Page 20 Application planning 4.1 Cable glands SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 21: Installing/Mounting

    • Mount the device using suitable tools. Refer to the information in Technical data (Page 33) for installation torque requirements. Mounting Introduction You can mount the SIWAREX JB junction box in any position. Preferably, the cable glands should point downward. Procedure 1. Prepare the location for mounting.
  • Page 22 Installing/mounting 5.2 Mounting SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 23: Connecting

    Risk of explosion through compensating currents between hazardous area and the non-hazardous area. • Shielded cables that cross into hazardous areas should be grounded only at one end. • If grounding is required at both ends, use an equipotential bonding conductor. SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 24 NOTICE Ambient temperature too high Damage to cable sheath. • At an ambient temperature ≥ 60 °C (140 °F), use heat-resistant cables suitable for an ambient temperature at least 20 °C (36 °F) higher. SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 25: Wiring Diagrams

    6.2 Wiring diagrams Wiring diagrams 6.2.1 Load cells with four-wire system Figure 6-1 Shield of the signal cable connected to EMC shield terminal Figure 6-2 Shield of the signal cable connected to shield terminal SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 26 Connecting 6.2 Wiring diagrams The following jumpers are set by default: Jumper From terminal To terminal EXC- SENSE- EXC+ SENSE+ Note If the jumpers are missing, the electronic weighing system reports a wire break. SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 27: Load Cells With Six-Wire System

    Shield of load cell cable connected to EMC shield terminal Figure 6-4 Shield of load cell cable connected to shield terminal ● Disconnect the following jumpers: Jumper From terminal To terminal EXC- SENSE- EXC+ SENSE+ SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 28: Connecting Junction Boxes

    To learn how to connect the cable, see section Connecting the cable (Page 29). 8. Connect the equipotential-bonding conductor with crimped cable lugs. 9. Close the cover of the junction box with the specified tightening torque (Page 33). See also Technical data (Page 33) SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 29: Connecting The Cable

    2. Insert the stripped load cell cable into the square opening of the screw terminal as far as it will go. 3. Tighten the screws with the specified tightening torque (Page 33). Result The tightened screw firmly holds the stripped wire and establishes the contact. See also Design (Page 15) SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 30 Connecting 6.4 Connecting the cable SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 31: Service And Maintenance

    Further information about devices containing batteries can be found at: Information on battery/product return (WEEE) (https://support.industry.siemens.com/cs/document/109479891/) Note Special disposal required The device includes components that require special disposal. • Dispose of the device properly and environmentally through a local waste disposal contractor. SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 32 Service and maintenance 7.1 Disposal SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 33: Technical Data

    Cable glands Screw connection Terminal area Tightening torque M16 x 1.5 mm 4 ... 8 mm 6 Nm Load cells • M20 x 1.5 mm 10 ... 14 mm 10 Nm Signal cable • SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 34 10 ... 150 ... 10 Hz, amplitude 0.35 mm Maximum 0.6 Nm Tightening torque • Core cross-section 0.14 ... 1.5 mm² Tightening torque mounting 1.5 ... 2 Nm screw of the cover See also Accessories (Page 39) SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 35: Electrical Specifications

    Maximum length • ≥ 0.1 mm (hazardous area) Diameter of individual • conductors Equipotential bonding conductor At least 4 mm² Electrical specifications Variable Value Rated voltage max. 400 V AC Load current Max. 13.5 A SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 36: Certificates And Approvals

    II 2 D Ex tb IIIC T85 °C Db IP66 II 1 D Ex tb + ib IIIC T85 °C Da IP66 ATEX • Ex tb IIIC T85 °C Db IP66 IECEx • Ex tb + ib IIIC T85 °C Da IP66 SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 37: Dimension Drawings

    Dimension drawings Dimension drawing stainless steel enclosure Figure 9-1 Dimension drawing stainless steel enclosure, dimensions in mm [inch] SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 38: Dimension Drawing Aluminum Enclosure

    Dimension drawings 9.2 Dimension drawing aluminum enclosure Dimension drawing aluminum enclosure Figure 9-2 Dimension drawing aluminum enclosure, dimensions in mm [inch] SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 39: Ordering Data

    Accessories You can order accessories online: Industry Mall (https://mallstage.industry.siemens.com/mall/en/b0/Catalog/Products/10038765?tree=Catalo gTree) Ordering data accessories Application Article No. EMC cable glands for SIWAREX JB Aluminum 7MH5002-0AA30 Extension set for SIWAREX JB Aluminum 7MH5002-0AB30 Signal cable SIWAREX cable standard applications (orange) 7MH4702-8AG SIWAREX cable intrinsically safe Ex applications (blue)
  • Page 40 Ordering data 10.1 Accessories SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 41: Appendix

    In addition to our documentation, Siemens provides a comprehensive support solution at: ● Service&Support (http://www.siemens.com/automation/service&support) Personal contact If you have additional questions about the device, please contact your Siemens personal contact at: ● Partner (http://www.automation.siemens.com/partner) In order to find the contact for your product, select under 'All Products and Branches' the path 'Automation Technology >...
  • Page 42 Appendix A.2 Certificates SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 43: Index

    Edition, 5 Hazardous area Laws and directives, 9 History, 5 Hotline, 41 Improper device modifications, 10 Internet, 41 nA, (See ec) Qualified personnel, 11 Scope of delivery, 6 Service, 41 Support, 41 Test certificates, 9 SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...
  • Page 44 Index SIWAREX JB Operating Instructions, 12/2017, A5E43011851-AA...