Siemens Milltronics MUS Operating Instructions Manual
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Siemens Milltronics MUS Operating Instructions Manual

Siemens Milltronics MUS Operating Instructions Manual

Belt scale
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Belt Scales
Milltronics MUS Belt Scale
Operating Instructions 06/2012
Milltronics

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Summary of Contents for Siemens Milltronics MUS

  • Page 1 Belt Scales Milltronics MUS Belt Scale Operating Instructions 06/2012 Milltronics...
  • Page 2 The user is responsible for all changes and repairs made to the device by the user or the user’s agent.  All new components are to be provided by Siemens Milltronics Process Instruments.  Restrict repair to faulty components only.
  • Page 3 ___________________ Milltronics MUS Introduction ___________________ Safety notes ___________________ Description Milltronics ___________________ Installing/mounting Belt Scales ___________________ Milltronics MUS Connecting ___________________ Commissioning Operating Instructions ___________________ Service and maintenance ___________________ Technical data ___________________ Dimension drawings 06/2012 7ML19985CQ02-02...
  • Page 4 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 5: Table Of Contents

    Idler mounting ..........................20 4.5.5 Position the weighmodule ......................24 4.5.6 Position the scale.........................25 4.5.7 Release the shipping stops......................26 4.5.8 Align and level the idlers ......................27 4.5.9 Check alignment ..........................28 Connecting .............................. 29 Belt scale wiring ...........................29 Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 6 Re-rating............................33 Service and maintenance ........................35 Maintenance..........................35 Replacing a load cell ........................36 Spare parts..........................36 Technical support........................37 Technical data ............................39 Specifications ..........................39 Dimension drawings ..........................43 Outline dimensions........................43 Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 7: Introduction

    Introduction Note The Siemens weighing system is to be used only in the manner outlined in this manual, otherwise protection provided by equipment may be impaired.  It is your responsibility to read this manual before installing and starting up any component of the weighing system to which the belt scale is being applied.
  • Page 8 Introduction 1.1 The manual Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 9: Safety Notes

    Note Alterations to the product, including opening or improper repairs of the product, are not permitted. If this requirement is not observed, the CE mark and the manufacturer's warranty will expire. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 10 Safety notes 2.1 General safety instructions Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 11: Description

    Principle of operation Belt scales work with an existing belt conveyor and the selected Siemens integrator. As material moving along the conveyor belt travels over the belt scale, it exerts a force proportional to the material load through the suspended idler to the load cells.
  • Page 12 Description 3.2 Principle of operation Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 13: Installing/Mounting

     The idler to be used on the scale and at least the next two approach and retreat idlers, must be of the same style and manufacturer, and in good condition. Prepare the site in accordance with the Siemens drawing(s) or by referring to the Belt Scale Applications Guidelines (7ML19985GA01).

  • Page 14: Control Gates

    To accommodate this, the conveyor manufacturer designs a built-in vertical displacement of the head pulley above the top of the center roll of the adjacent idler. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 15 35º idlers ⑥ Belt scale Note On conveyors with 45° trough idlers throughout, a minimum of two 45°, one 35°, and one 20° retreat idlers must be located between the scale and the head pulley. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 16 When locating the scale close to the head pulley, a maximum of 13 mm (½") vertical displacement between the top of the head pulley and the top of the center of the adjacent roll is allowed. ① 13 mm (1/2") maximum ② Head pulley ③ 20° idler, center roll Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 17: Conveyor Curvature

    Avoid locating the scale within the tangents of scale curvature. Concave ① Minimum 12 m (40 ft) ② Tangents ③ Belt scale Convex ① Minimum 6 m (20 ft) ② Minimum 12 m (40 ft) ③ Tangents ④ Belt scale Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 18: Belt Ploughs

    Any conveyor that is not a permanent structure, which varies in its incline, elevation or profile is not considered a good installation for an accurate belt scale. A belt scale can be used effectively in this conveyor type, but requires special setup. Siemens offers an inclinometer for use with variable incline conveyors.

  • Page 19: Skirt Boards And Sealing Strips

    When handling the MUS during installation and setup, make sure the stops remain in place. Reinstall both shipping stops during maintenance or prolonged shutdown. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 20: Installation Precautions

    Use extreme caution when arc welding in the area of the belt scale. Ensure that no welding current can flow through the belt scale. Welding currents passing through the scale can functionally damage the load cells. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 21: Installation Procedure

    4. Position the weigh module 5. Position the scale 6. Release the shipping stops 7. Align and level the idlers 8. Check alignment 4.5.2 Remove the idler Remove the idler(s) from the desired location on the conveyor. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 22: Remove The Idler Foot Plate And Modify The Idler Frame At Both Ends

    Within this type of idler, construction will vary depending on the manufacturer and the application. The idler depicted in this section uses an angle iron spine. The following images depict alternate idler construction and tips on how they should be modified and installed. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 23 ● Troughed idler with channel spine ① ③ Gusset reinforcement if required 12.7 mm (0.5") ② 100 mm (4") Idler modification ① ③ Optional flat bar weight mounting Idler clip ② ④ Customer's idler Mounting bolts Idler installation Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 24 ● Troughed idler with pipe spine ① ③ Gusset reinforcement if required 12.7 mm (0.5") ② 100 mm (4") Idler modification ① ③ Optional flat bar weight mounting Idler clip ② ④ Customer's idler Mounting bolts Idler installation Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 25 ● Troughed idler with angle spine ① ③ Gusset reinforcement if required Idler clip ② 100 mm (4") Idler modification ① ③ Optional flat bar weight mounting Idler clip ② ④ Customer's idler Mounting bolts Idler installation Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 26: Position The Weighmodule

    Dimension 'n' ② approach idlers ③ location of removed idler ④ retreat idlers Note Be sure there is sufficient clearance between the return belt, MUS, and its test weight (when used during the calibration procedure). Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 27: Position The Scale

    Place the scale on the conveyor stringers with the arrows on the weigh modules pointing in the direction of belt travel (retreat idlers). Mount the modified idler onto the scale using the idler clamping brackets. ① Idler clamping brackets Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 28: Release The Shipping Stops

    180 degrees from its starting position. Tighten screws to secure in place. ① 'A' screws ② shipping stops Note Shipping bracket must be removed prior to aligning the idlers in the weighing area. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 29: Align And Level The Idlers

    Precise idler alignment is very important to achieve maximum accuracy of the weighing system. Misaligned idlers will result in unwanted forces being applied on each idler in the weighing area, causing calibration and measurement errors. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 30: Check Alignment

    Although the accepted tolerance for idler alignment is ± 0.8 mm (1/32"), the scale-mounted idler should never be lower than the adjacent idlers. Establishing good idler alignment is the most important part of the installation procedure. Scale accuracy is directly affected by alignment. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 31: Connecting

    Connecting Belt scale wiring ① Load cells, complete with 3 m (10 ft) cable in flexible conduit with 1/2" NPT panel connector ② Load cell 'B' ③ Load cell 'A' Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 32 + SIG SHIELD SHIELD SHIELD Note To avoid affecting the weighing process, do not support conduit or load cell cables on the weighing idler, or on the idler support components of the belt scale. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 33: Commissioning

    All operating instructions are available for download at our web site: Siemens weighing (http://www.siemens.com/weighing) Test load The test load value is required for calibration of the integrator. Enter the calculated value into the associated programming parameter of the integrator in kilograms per meter or pounds per foot.

  • Page 34: Balancing

    A zero calibration can be performed after sufficient running of the conveyor allows the belt to limber up and take its natural formation. A zero calibration is performed in accordance to the belt scale integrator operating instructions with the conveyor running empty. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 35: Zero Calibration

    To achieve accuracy with respect to absolute values, perform material tests. Refer to the associated integrator manual for instructions on material testing. Re-rating Consult your Siemens representative for any significant change in rate, speed, and/or idler spacing from original design specifications to maintain proper design parameters. Milltronics MUS...
  • Page 36 Commissioning 6.8 Re-rating Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 37: Service And Maintenance

    You can observe the integrity of the load cells by performing zero and span calibrations. If the zero and span deviations display a continuous unidirectional drift or the system cannot be calibrated for any apparent mechanical reason, the load cells may be damaged. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 38: Replacing A Load Cell

    The only spare part recommended for the belt scale is the load cell. Refer to the load cell nameplate for the proper size and model number. Re-balance any load cell that has been replaced. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 39: Technical Support

    ● 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 additional questions about the device Find your contact partner at: Local contact person (http://www.siemens.com/automation/partner)
  • Page 40 Service and maintenance 7.4 Technical support Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 41: Technical Data

    -10 to +40 °C (+15 to +105 °F) compensated Belt width standard duty: up to 1000 mm (CEMA width up to 42 ") heavy duty: up to 1500 mm (CEMA width up to 60") refer to Outline Dimensions Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 42 Technical data 8.1 Specifications Belt speed 3 m/s (600 fpm) Contact Siemens application engineering for consideration of higher belt speeds. Capacity up to 5000 t/h (5500 STPH) at maximum belt speed Conveyor incline Table 8- 1 Conveyor incline ± 20° from horizontal, fixed incline up to ±30°...
  • Page 43 Technical data 8.1 Specifications Approvals Europe Australia C-TICK EMC performance available upon request. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 44 Technical data 8.1 Specifications Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...

  • Page 45: Dimension Drawings

    MUS Belt Scale standard duty side view - dimensions in mm (inches) Note (2) approach and (2) retreat idlers should be aligned with the weight idler to within +0.8 to 0 mm (+1/32 to 0"). Contact your Siemens representative with any questions. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 46 Standard base CEMA idler, or equivalent (customer supplied) ③ Existing conveyor stringers ④ Belt width +230 mm (9", based on CEMA sizes), or to suit MUS Belt Scale standard duty front view - dimensions in mm (inches) Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 47 MUS Belt Scale heavy duty side view - dimensions in mm (inches) Note (2) approach and (2) retreat idlers should be aligned with the weight idler to within +0.8 to 0 mm (+1/32 to 0"). Contact your Siemens representative with any questions. Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 48 Standard base CEMA idler or equivalent (customer supplied) ③ Existing conveyor stringers ④ Belt width +230 mm (9", based on CEMA sizes), or to suit MUS Belt Scale heavy duty front view - dimensions in mm (inches) Milltronics MUS Operating Instructions, 06/2012, 7ML19985CQ02-02...
  • Page 50 For more information www.siemens.com/level www.siemens.com/weighing Siemens AG Subject to change without prior notice Industry Sector 7ML19985CQ02 Rev. 2.3 1954 Technology Drive © Siemens AG 2012 P.O. Box 4225 *7ml19985CQ02* Peterborough, ON Canada K9J 7B1 email: techpubs.smpi@siemens.com Printed in Canada www.siemens.com/processautomation...

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