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Siemens 7MH7300 Series Operating Instructions Manual

Weighfeeders
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SITRANS
Weighfeeders
SITRANS WW200
Operating Instructions
7MH7300-....(SITRANS WW200)
06/2018
A5E33560654-AC
Introduction
Safety information
Description
Installing
Calibrating
Connecting
Commissioning
Maintenance
Troubleshooting
Technical data
Dimension drawings
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Summary of Contents for Siemens 7MH7300 Series

  • Page 1 Introduction Safety information Description SITRANS Installing Weighfeeders SITRANS WW200 Calibrating Connecting Operating Instructions Commissioning Maintenance Troubleshooting Technical data Dimension drawings 7MH7300-..(SITRANS WW200) 06/2018 A5E33560654-AC...
  • 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

    Table of contents Introduction..............................5 The manual ..........................5 Safety information............................7 Safety and general precautions ....................7 Description..............................9 Weighfeeder operation......................9 WW200 Operation........................10 Installing ..............................11 Installation steps ........................11 Calibrating ..............................13 Test load ..........................13 Zero............................13 Span............................13 Connecting ..............................15 Integrator Wiring Note ......................15 Commissioning ............................17 Shear gate..........................17 Skirtboards ..........................17 Changing the conveyor belt ....................18 Belt tension ..........................19...
  • Page 4 Table of contents Lubrication..........................26 Weighfeeder storage recommendations ................26 8.4.1 Load cell care.........................26 8.4.2 Gear reducer ..........................26 8.4.3 Electrical..........................27 8.4.4 Lubrication..........................27 8.4.5 Belt care ..........................27 Troubleshooting............................29 Mechanical troubleshooting ....................29 9.1.1 Zero Drift, non-repeatability, or non-linearity................29 Technical data ............................31 10.1 Specifications .........................31 Dimension drawings ...........................33 11.1 Open unit..........................33...

  • Page 5: Introduction

    Introduction Note The Siemens weighfeeder is to be used only in the manner outlined in this instruction manual. The manual This instruction manual covers the operation, installation, and maintenance of the Siemens weighfeeder. Specific information for your weighfeeder model is also included with the product such as testing documents.
  • Page 6 Introduction 1.1 The manual SITRANS WW200 Operating Instructions, 06/2018, A5E33560654-AC...

  • Page 7: Safety Information

    Safety information Safety and general precautions WARNING ALWAYS STOP the belt, lock-out, and/or place a "Do Not Energize" tag on the main disconnect before working on or around the weighfeeder. WARNING Always follow established safe operating practices when working on or around the weighfeeder, especially in wet environments and when adjacent to conductive steel mounting framework.
  • Page 8 Safety information 2.1 Safety and general precautions SITRANS WW200 Operating Instructions, 06/2018, A5E33560654-AC...

  • Page 9: Description

    Description SITRANS WW200 is a low-to-medium capacity weighfeeder for minor ingredient additives. The unique weigh system applies live load directly to two platform load cells. An adjustable mechanical shear gate profiles the material and fixes the correct material bed depth for a given material application.

  • Page 10: Ww200 Operation

    Description 3.2 WW200 Operation WW200 Operation Enclosed unit Open unit SITRANS WW200 Operating Instructions, 06/2018, A5E33560654-AC...

  • Page 11: Installing

    When lifting the weighfeeder, connect to the structural frame, and follow local governing code for lifting/hoisting. Perform a thorough and systematic inspection of containers immediately upon receipt of your Siemens weighfeeder. The containers are packed to separate each item and provide protection during shipping. Note Do not remove equipment from shipping crates or boxes until you check for possible shipping damage.
  • Page 12 Installing 4.1 Installation steps 1. Construct the necessary support framework to provide a sturdy, rigid base. Vibration isolators are recommended if the location is subject to moderate or heavy vibration. 2. Align the in-feed section of the weighfeeder with the discharge of the feed device. Prevent twisting or misalignment that could induce stress on the weighing section.

  • Page 13: Calibrating

    Calibrating After the weighfeeder has been properly installed, calibration of the weighing system must be done in conjunction with the integrator. Refer to the integrator instruction manual for programming and calibration. A test sheet has been provided with the weighfeeder detailing the entries used during factory calibration.
  • Page 14 Calibrating 5.3 Span SITRANS WW200 Operating Instructions, 06/2018, A5E33560654-AC...

  • Page 15: Connecting

    Connecting INTEGRATOR INTEGRATOR LOAD CELL LOAD CELL SPEED SENSOR "A" "B" Integrator Wiring Note Note For integrator wiring: Wiring diagram shows connection to BW500 or BW500L. For connection to SIWAREX FTC, WP241 or WT241 loadcell signals need to be wired in parallel: connect TB4.1 to TB2.5 and TB4.2 to TB2.6.
  • Page 16 Connecting 6.1 Integrator Wiring Note Note Load cell sense lines When sense lines (SEN + and SEN -) are included with a load cell, they must be terminated with EXC (+ to +, - to -) or cut and covered, but not wrapped together as this will short the cell. Note Standard wiring shown, consult wiring diagrams for optional electrical connections.

  • Page 17: Commissioning

    Disregard for horseshoe-style infeeds. The shear gate on the inlet of the weighfeeder needs to be set to allow the maximum feed rate capacity required. Consult your Siemens representative if feed rate changes are required. Skirtboards The skirtboards have been factory set to proper specifications. Note that near the inlet, the skirtboards are very close to the belt.

  • Page 18: Changing The Conveyor Belt

    Commissioning 7.3 Changing the conveyor belt Your system has been supplied with soft PVC seal strips. Position the seal strips on the belt as shown. ① ④ Pulley Do not force seal strip against belt ② ⑤ Seal strip Belt ③...

  • Page 19: Belt Tension

    Commissioning 7.5 Belt tracking 4. From the access side of the weighfeeder at the discharge end, grab the edge of the belt and gently pull it over the side rail, making sure that the leading edge of the belt does not catch on any components.

  • Page 20: Telescoper Adjustment

    5. Re-tighten the jam nut located on the telescoper to maintain the new telescoper position after completing the tracking procedure. 6. If you are having problems tracking the belt, consult your Siemens representative. Common causes of belt tracking problems are: uneven or improperly distributed product loading, twisted frame, or product buildup on head or tail pulleys.

  • Page 21: Weigh Deck Alignment

    Commissioning 7.7 Weigh deck alignment ① ③ Side rail Jam nut ② ④ Adjusting screw Driven shaft Weigh deck alignment Precise deck alignment is very important to achieve maximum accuracy of the weighing system. A misaligned deck will result in unwanted forces being applied in the weighing area, causing calibration and measurement errors.

  • Page 22: Quick Startup Overview

    Note Please read and understand all of the instructions before proceeding with the replacement. Contact your Siemens representative for assistance if you have any questions or problems. 7.9.1 Removing old load cell 1.

  • Page 23: Installing New Load Cell

    Commissioning 7.9 Load cell replacement ① ⑤ Weigh deck Load cell ② ⑥ Belt Shipping bolt ③ ⑦ Top load cell mount Overload bolt ④ Bottom load cell mount Note Load cell may appear different than shown. 7.9.2 Installing new load cell 1.

  • Page 24: Recalibration

    Commissioning 7.9 Load cell replacement 5. Route the load cell cable to the junction box and connect the load cell according to the supplied interwiring diagram. Repeat steps for other load cells if necessary. Note Once the load cell has been replaced, check the weigh deck alignment with the approach and retreat slider bars.

  • Page 25: Maintenance

    Maintenance WARNING ALWAYS STOP the belt, lock-out, and/or place a "Do Not Energize" tag on the main disconnect before working on or around the weighfeeder. Preventative maintenance The maintenance schedule below is recommended to maintain top performance and accuracy of the system. Weighfeeders mounted in severe weather or dusty conditions may require a more rigorous maintenance schedule.

  • Page 26: General Maintenance

    Maintenance 8.4 Weighfeeder storage recommendations Note ● In extraordinary climatic or environmental conditions, special lubricants may be required. ● In corrosive environments, more frequent lubrication is required to purge contaminants. General maintenance The equipment should be cleaned periodically and any excess accumulation of product should be removed to minimize potential damage to the mechanical components and scale accuracy.

  • Page 27: Electrical

    Maintenance 8.4 Weighfeeder storage recommendations In addition, fill the gear reducer with an appropriate gear oil to prevent oxidation. When the equipment is re-installed, completely drain this gear oil and then refill the reducer to the appropriate level. 8.4.3 Electrical To prevent oxidation, place a desiccant or moisture removal material in all electrical junction boxes and component cabinets.
  • Page 28 Maintenance 8.4 Weighfeeder storage recommendations SITRANS WW200 Operating Instructions, 06/2018, A5E33560654-AC...

  • Page 29: Troubleshooting

    Note If you have difficulty determining the cause of the problem, contact your Siemens representative. Be sure to have the Model Number and Serial Number of your system and all of the calibration and setup parameters available before calling.
  • Page 30 Troubleshooting 9.1 Mechanical troubleshooting SITRANS WW200 Operating Instructions, 06/2018, A5E33560654-AC...

  • Page 31: Technical Data

    Technical data 10.1 Specifications Accuracy ± 0.5% Accuracy subject to: On factory approved installations, the weighfeeder system’s totalized weight will be within the specified accuracy when compared to a known weighed material test sample. The test rate must be within the specified range of the design capacity, and held constant for the duration of the test.
  • Page 32 Technical data 10.1 Specifications Drive Standard gearmotor - helical-worm geared motor, AC Efficiency class IE1, IEC or UL-R/CSA, IP55, incl. PTC, RAL7031, C2 coating acc. EN12944. Food grade gearmotor - helical-worm geared motor, AC Efficiency class IE3, IEC or UL-R/CSA, IP66, including PTC, corrosion resistant Aluminum housing, sealed surface, complies with FDA.

  • Page 33: Dimension Drawings

    Dimension drawings 11.1 Open unit 298 mm (11.8“) 248 mm (9.8“) Inlet 724 mm (28.5“) 229 mm (9.0“) Shear gate infeed version Discharge 133 mm (5.3“) Inlet Belt width 533 mm (21“) 540 mm (21.2“) 381 mm (15“) 229 mm (9.0“) Open unit dimensions Belt Width...

  • Page 34: Enclosed Unit

    Dimension drawings 11.2 Enclosed unit Length adder 1321 mm (52") 698 mm (27.5") 1676 mm (66") 203 mm (8") 1524 mm (60") 902 mm (35.5") 1880 mm (74") 406 mm (16") 1727 mm (68") 1105 mm (43.5") 2083 mm (82") 610 mm (24") 1930 mm (76") 1308 mm (51.5")

  • Page 35: Index

    Index About this product, 9 Gear motor, 26 Accuracy, 31 storage, 27 Alignment, 21 Gear reducer, 26 Approvals, 32 storage, 27 General maintenance, 26 Grounding, 11 Bearings Type of grease, 25 Belt Inlet, 17 cleaning, 31 In-motion weighing, 9 speed, 31 Installation, 11 storage, 27 Integrator, 9, 13, 22...
  • Page 36 Index Rate of flow, 9 Replacing load cells, 22 Safety, 7 Shear gate, 17 Skirtboards, 17 Span calibration, 13 Specifications, 32 Speed sensor, 31 Speed sensor,, 9 Startup, 17 Static weighing, 9 Storing a weighfeeder, 26 Temperature material, 31 Test load, 13 Test weights, 9 Units, 9 Weigh bridge, 9...

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Sitrans ww200

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