1. Manuals
  2. Brands
  3. Vega Manuals
  4. Accessories
  5. WEIGHTRAC 31
  6. Operating instructions manual

Vega WEIGHTRAC 31 Operating Instructions Manual

Radiometric sensor for mass flow detection
Hide thumbs Also See for WEIGHTRAC 31:
Table of Contents

Advertisement

Quick Links

Download this manual
Operating Instructions
Radiometric sensor for mass flow
detection
WEIGHTRAC 31
Profibus PA
Document ID: 43837

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the WEIGHTRAC 31 and is the answer not in the manual?

Questions and answers

Related Manuals for Vega WEIGHTRAC 31

Summary of Contents for Vega WEIGHTRAC 31

  • Page 1 Operating Instructions Radiometric sensor for mass flow detection WEIGHTRAC 31 Profibus PA Document ID: 43837...

  • Page 2: Table Of Contents

    Diagnostics and servicing ....................61 Maintenance ........................61 Status messages ......................61 Rectify faults ........................64 Exchanging the electronics module ................65 Software update ......................66 How to proceed if a repair is necessary ................66 WEIGHTRAC 31 • Profibus PA...
  • Page 3 Safety instructions for Ex areas Take note of the Ex specific safety instructions for Ex applications. These instructions are attached as documents to each instrument with Ex approval and are part of the operating instructions. Editing status: 2020-05-12 WEIGHTRAC 31 • Profibus PA...

  • Page 4: About This Document

    Symbols used Document ID This symbol on the front page of this instruction refers to the Docu- ment ID. By entering the Document ID on www.vega.com you will reach the document download. Information, note, tip: This symbol indicates helpful additional infor- mation and tips for successful work.

  • Page 5: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use WEIGHTRAC 31 is a sensor for continuous mass flow detection on conveyor belts as well as screw or chain conveyors. You can find detailed information about the area of application in chapter "Product description".

  • Page 6: Eu Conformity

    The environment management system is certified according to DIN EN ISO 14001. Please help us fulfil this obligation by observing the environmental instructions in this manual: • Chapter "Packaging, transport and storage" • Chapter "Disposal" WEIGHTRAC 31 • Profibus PA...

  • Page 7: Product Description

    Alternatively, you can access the data via your smartphone: • Download the VEGA Tools app from the "Apple App Store" or the "Google Play Store" • Scan the DataMatrix code on the type label of the instrument or •...

  • Page 8: Principle Of Operation

    The appropriate source container (e.g. SHLD-1) must be ordered separately. Principle of operation Application area The instrument is suitable for bulk solid applications on conveyor belts and screw conveyors. There are application possibilities in nearly all areas of industry. WEIGHTRAC 31 • Profibus PA...

  • Page 9: Packaging, Transport And Storage

    The display and adjustment module PLICSCOM is used for measured value indication, adjustment and diagnosis. It can inserted any time into the sensor or the external display and adjustment unit and removed again. Adjustment only via DTM operation possible WEIGHTRAC 31 • Profibus PA...
  • Page 10 WEIGHTRAC 31. Reference absorber The reference absorber is a test facility for the WEIGHTRAC 31. It is suitable for reference measurement on conveyor belts and screw conveyors. A certain measured value can be exactly reproduced for test purposes when a conveying system is empty.

  • Page 11: Corresponding Source Container

    This permit is issued by the respective government office or the responsible authority (in Germany, for example, offices for environ- mental protection, trade supervisory boards, etc.) You can find further instructions in the operating instructions manual of the source container. WEIGHTRAC 31 • Profibus PA...
  • Page 12 (in Ger- many, for example, the radiation protection ordinance). We are at your disposal for further information concerning radiation protection and regulations in other countries. WEIGHTRAC 31 • Profibus PA...

  • Page 13: Mounting

    These are mainly: • Active measuring component • Process fitting • Process seal Process conditions in particular are: • Process pressure • Process temperature • Chemical properties of the medium • Abrasion and mechanical influences WEIGHTRAC 31 • Profibus PA...

  • Page 14: Mounting Instructions

    You can position and mount WEIGHTRAC 31 in the measuring frame from both sides. Direct the exit angle of the source container to the WEIGHTRAC 31. Mount the source container at the specified distance to the conveyor belt. Secure the area with a safety fence and protective grating so that no one can reach into the dangerous area.
  • Page 15 4. Place the other two clamp collars (4) according to the illustration above the clamp collars that are already in place (4). 5. Place a metallic cover plate (3) according to the illustration on each upper clamp collar (4). WEIGHTRAC 31 • Profibus PA...
  • Page 16 Avoid places where the product accumulates or falls back over the worm shaft. - Chain conveyors When mounting the WEIGHTRAC 31 on a chain conveyor, the instal- lation angle is very important for optimal irradiation. Follow the instructions in the "Source Sizing" document.
  • Page 17 (6). Mount the measuring frame as well centered as possible and at an angle of 90° above the conveyor belt. Keep enough lateral distance to the conveyor belt. WEIGHTRAC 31 • Profibus PA...
  • Page 18 Fig. 8: Mounting the support stands 14 Screw M10 (24 pcs.) - provided by the customer 15 Washer M10 (24 pcs.) - provided by the customer 4. Tighten the screws (14) evenly with 45 Nm (33.2 lb ft). WEIGHTRAC 31 • Profibus PA...
  • Page 19 (11). Position the measuring width of the sensor below the conveyor belt as close as possible to the center. Make sure that there is WEIGHTRAC 31 • Profibus PA...
  • Page 20 Select the alignment of the source holder so that the rotary mecha- nism of the source holder is located on the easily accessible side of the conveyor belt. This makes the rotary mechanism easily accessible WEIGHTRAC 31 • Profibus PA...
  • Page 21 Provide the straining screws (1) for each cable to ensure reliable straining of the measuring frame. Make sure that the measuring frame is perfectly vertical after strain- ing. Fig. 11: Straining the measuring frame Straining screw WEIGHTRAC 31 • Profibus PA...
  • Page 22 If these measures are not sufficient to maintain the max. ambient temperature, you could consider using the water or air cooling system we offer for WEIGHTRAC 31. The cooling system must also be included in the calculations for the measuring point. Contact our specialists regarding the dimensioning of the cooling.
  • Page 23 Select the height adjustment so that the spring of the impeller is slightly pre-loaded with empty conveyor belt. Fig. 13: Direction of rotation of the tachometer Conveyor belt Support wheel of the conveyor belt Spring for pre-loading the impeller WEIGHTRAC 31 • Profibus PA...

  • Page 24: Connecting To Power Supply

    In the case of instrument housings with self-sealing NPT threads, it is not possible to have the cable entries screwed in at the factory. The free openings for the cable glands are therefore covered with red dust protection caps as transport protection. WEIGHTRAC 31 • Profibus PA...
  • Page 25 1 cm (0.4 in) of insulation from the ends of the individual wires 4. Insert the cable into the sensor through the cable entry Fig. 14: Connection steps 4 and 5 Locking of the terminal blocks WEIGHTRAC 31 • Profibus PA...
  • Page 26 To do this, loosen the two lateral locking levers of the terminal block with a small screwdriver. When loosening the locking, the terminal block is automatically squeezed out. It must snap in place when re-inserted. WEIGHTRAC 31 • Profibus PA...

  • Page 27: Connection - Mass Flow Determination

    Contact pins for the display and adjustment module or interface adapter Instruments with intrinsically safe signal output You can find detailed information on the explosion-protected versions (Ex-ia, Ex-d) in the Ex-specific safety instructions. These safety MGC = Multi Gauge Communication WEIGHTRAC 31 • Profibus PA...
  • Page 28 Fig. 18: Adjustment and connection compartment (Ex-ia) with instruments with intrinsically safe signal output 1 Terminals - Signal output Profibus PA Contact pins for the display and adjustment module or interface adapter Terminals for the external display and adjustment unit Ground terminal MGC = Multi Gauge Communication WEIGHTRAC 31 • Profibus PA...

  • Page 29: Connection - Summation

    Only the address "99" is reserved for the Master instrument. Note: Make sure that all instruments are using the same software version. Software version 2.0 is not downward-compatible. Connect the instruments according to the following wiring plan: WEIGHTRAC 31 • Profibus PA...
  • Page 30 Conveyor belt M Master instrument S Slave instrument Information: For example, a radial connection would be also possible as an alter- native. Take note of the polarity. The selection of the two terminal pairs is individual. WEIGHTRAC 31 • Profibus PA...

  • Page 31: Connection - Tachometer

    If the belt stops, measurement is also halted for this period. Without a belt stop signal, WEIGHTRAC 31 would continue summing the delivery rate. You can implement the belt stop signal with a switching relay or a signal from the plant control system (PLC).
  • Page 32 5 Connecting to power supply Fig. 20: Digital tachometer The digital tachometer can be powered by WEIGHTRAC 31. This is only possible if you power WEIGHTRAC 31 with max. 24 V. Output digital tachometer: Open Collector output The following cable colours are valid for the fix connected cable.

  • Page 33: Set Instrument Address

    PACTware/DTM (address setting via software) Hardware addressing The hardware addressing is effective if an address <126 is set with the address selection switches on the instrument. Software address- ing is then no longer effective, the set hardware address applies. WEIGHTRAC 31 • Profibus PA...
  • Page 34 Software addressing Software addressing is only effective if address 126 or higher is set on the instrument with the address selection switches. The addressing procedure is described in the operating instructions manual "Display and adjustment module. WEIGHTRAC 31 • Profibus PA...

  • Page 35: Adjustment With The Display And Adjustment Module

    Fig. 23: Insert display and adjustment module Note: If you intend to retrofit the instrument with a display and adjustment module for continuous measured value indication, a higher lid with an inspection glass is required. WEIGHTRAC 31 • Profibus PA...

  • Page 36: Adjustment System

    The pen oper- ates the four keys of the display and adjustment module right through the closed lid (with inspection window) of the sensor housing. WEIGHTRAC 31 • Profibus PA...

  • Page 37: Display And Adjustment Module - Indication Of System Parameters

    Carry out the adjustment with PACTware. With the display and adjustment module you can only read out the pa- rameters of the WEIGHTRAC 31. Carry out the parameter adjustment of the instrument with the adjustment software PACTware. You can find the parameter adjustment in the next chapter.
  • Page 38 Keep the entered PIN number in mind. Operation of the sensor is only possible with this PIN number. Caution: When the PIN is active, adjustment via PACTware/DTM as well as other systems is also blocked. In delivery status, the PIN is 0000. WEIGHTRAC 31 • Profibus PA...
  • Page 39 In this menu item, you define the display format of the measured value on the display. You can define different display formats for the two measured values. You can thus define the number of decimal positions the measured value is displayed with. WEIGHTRAC 31 • Profibus PA...
  • Page 40 (Delta I). The value is an indication for the reliability and non- repeadability of the measurement. The higher the difference between the two adjustment points, the higher the differential value (Delta I) and the more reliable the WEIGHTRAC 31 • Profibus PA...
  • Page 41 You can also interrupt the simulation with the switch on the electronics module. Zero rate In this menu item you can display the actual zero rate and the date of the zero rate. WEIGHTRAC 31 • Profibus PA...

  • Page 42: Saving The Parameterisation Data

    In the display and adjust- If the instrument is equipped with a display and adjustment module, ment module the parameter adjustment data can be saved therein. The procedure is described in menu item "Copy device settings". WEIGHTRAC 31 • Profibus PA...

  • Page 43: Setup With Pactware

    PACTware and the DTMs. All device DTMs are available as a free-of-charge standard version Standard/Full version and as a full version that must be purchased. In the standard version, WEIGHTRAC 31 • Profibus PA...

  • Page 44: Parameter Adjustment - Mass Flow Detection

    The standard version is available as a download under www.vega.com/downloads and "Software". The full version is avail- able on CD from the agency serving you. 7.3 Parameter adjustment - Mass flow detection The parameter adjustment adapts the instrument to the application conditions.
  • Page 45 7 Setup with PACTware In this menu item you can first of all adjust the WEIGHTRAC 31 to the Isotope isotope installed in the source container. For this purpose, check which isotope is in the source container. You can find this information on the type label of the source container.
  • Page 46 When you have selected this function, you can activate the slave out- puts via a selection field. When you activate this field, then the signal output of WEIGHTRAC 31 functions. When the output is activated, the instrument remains in its function as a Slave, but the signal output can be also used als single instrument.
  • Page 47 Fig. 29: Select process speed Input If you have neither a tachometer on the conveyor belt nor the actual belt speed from the plant control system, you should deactivate the WEIGHTRAC 31 • Profibus PA...
  • Page 48 Check inputs (step 4) In this window you are asked to check the inputs of the instrument. In this window you can accept the modifications previously made. Accept application (step The data are written into the instrument. WEIGHTRAC 31 • Profibus PA...
  • Page 49 With this menu item the natural background radiation can be faded out. For this purpose, the WEIGHTRAC 31 measures the natural back- ground radiation and sets the pulse rate to zero. In the future, the pulse rate from this background radiation will be automatically deducted from the total pulse rate.
  • Page 50 These settings influence the process value and hence also the digital output of the sensor. Enter in the menu window "Max. process value" the max. level (full), e.g. in "t/h". Enter in the menu window "Min. process value" the min. level (empty), e.g. in "t/h". WEIGHTRAC 31 • Profibus PA...
  • Page 51 With the setting "Automatic", the instrument itself calculates a suitable damping on the basis of the adjustment and the measured value changes. This setting is particularly suitable for application where fast and slow level changes occur. WEIGHTRAC 31 • Profibus PA...
  • Page 52 None - Relay operates as fail safe relay • Electronics temperature • Process value "No" reference value means that the relay output operates as fail safe relay. Caution: Independent of the selected reference value, the relay will deenergize in case of failure. WEIGHTRAC 31 • Profibus PA...
  • Page 53 In a last step, complete the adjustment with the setup assistant. After terminating the assistant, the program jumps back to the usual DTM program environment. Information: After a successful run of the setup assistant, you have to adjust two points in the DTM. WEIGHTRAC 31 • Profibus PA...
  • Page 54 The automatic zero rate determination gives you the possibility to trig- ger a zero rate determination via an impulse of the digital input. This allows you to activate the zero rate determination e.g. from the control room. WEIGHTRAC 31 • Profibus PA...
  • Page 55 (flow rates) on the conveyor belt. The bigger the difference in flow rates, the more precise the linearization. The way you measure the total quantity of the conveyed material depends on the options you have on site. WEIGHTRAC 31 • Profibus PA...
  • Page 56 7. Now enter the corresponding material quantity (e.g. kg, t, lb). In this case, this is the total quantity of material that has passed by during the measurement. This assigns a corresponding material quantity to the current pulse rate. WEIGHTRAC 31 • Profibus PA...
  • Page 57 9. Now enter the corresponding material quantity (e.g. kg, t, lb). In this case, this is the total material quantity lying on the conveyor belt during the measurement. Enter the length of the portion of belt used (e.g. 1 m). WEIGHTRAC 31 • Profibus PA...
  • Page 58 Cs-137 Application Mass flow Unit - Belt/screw speed Speed 1 m/s Background radiation 0 ct/s Unit of the process value t/h Adjustment max. Max. process value: 999 t/h Adjustment min. Min. process value: 0 t/h WEIGHTRAC 31 • Profibus PA...
  • Page 59 AI FB 2 Tag Descriptor AI FB 2 Channel Electronics temperature AI FB 2 scaling 0 °C = 0 °C 100 °C = 100 °C AI FB 2 Lin. Type Linear AI FB 2 Out Scale Unit °C WEIGHTRAC 31 • Profibus PA...

  • Page 60: Saving The Parameterisation Data

    Auto Profibus Ident Number Profile-compatible Selector (1 AI FB) Saving the parameterisation data We recommend documenting or saving the parameterisation data via PACTware. That way the data are available for multiple use or service purposes. WEIGHTRAC 31 • Profibus PA...

  • Page 61: Diagnostics And Servicing

    This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD. Maintenance required: Due to external influences, the instrument function is limited. The measurement is affected, but the measured WEIGHTRAC 31 • Profibus PA...
  • Page 62 Error in the measured value recording Restart instrument Photomultiplier error Exchanging the electronics F052 Invalid parameter adjustment Carry out a reset Faulty configuration F053 Adjustment of the input not correct Correct adjustment of the input Adjustment data input not correct WEIGHTRAC 31 • Profibus PA...
  • Page 63 Function check Code Cause Rectification Text message C029 Simulation active Finish simulation Simulation Wait for the automatic end after 60 mins. Tab. 6: Error codes and text messages, information on causes as well as corrective measures WEIGHTRAC 31 • Profibus PA...

  • Page 64: Rectify Faults

    "Wiring plan" Voltage supply missing Check cables for breaks; repair if necessary Operating voltage too low Check, adapt if necessary Additional interferences The following table describes possible faults that may not generate an error message: WEIGHTRAC 31 • Profibus PA...

  • Page 65: Exchanging The Electronics Module

    24 hour service hotline Should these measures not be successful, please call in urgent cases the VEGA service hotline under the phone no. +49 1805 858550. The hotline is also available outside normal working hours, seven days a week around the clock.

  • Page 66: Software Update

    Attach the completed form and, if need be, also a safety data sheet outside on the packaging • Please contact the agency serving you to get the address for the return shipment. You can find the agency on our home page www.vega.com. WEIGHTRAC 31 • Profibus PA...

  • Page 67: Dismount

    Pass the instrument directly on to a specialised recycling company and do not use the municipal collecting points. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. WEIGHTRAC 31 • Profibus PA...

  • Page 68: Supplement

    15 Nm (11.1 lbf ft), stainless steel A4-70 Max. torque for NPT cable glands and Conduit tubes Ʋ Aluminium/Stainless steel housing 50 Nm (36.88 lbf ft) For measuring width 500 … 2800 mm (19.7 … 110 in) WEIGHTRAC 31 • Profibus PA...
  • Page 69 Fig. 39: Data of the input variable Maximum conveyor belt width Total width - Crossbeam Clear width (internal dimension) - measuring frame Total height - measuring frame Clear height (internal dimension) - measuring frame Length of the detector (instrument length) WEIGHTRAC 31 • Profibus PA...
  • Page 70 253 V AC/DC With circuits > 150 V AC/DC, the relay contacts must be in the same circuit. Switching current max. 3 A AC (cos phi > 0.9), 1 A DC Breaking capacity Ʋ Min. 50 mW WEIGHTRAC 31 • Profibus PA...
  • Page 71 Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk solids applications, until the output signal has taken for the first time 90 % of the final value (IEC 61298-2). Tested according to the guidelines of German Lloyd, GL directive 2. WEIGHTRAC 31 • Profibus PA...
  • Page 72 9 … 32 V DC Number of sensors per DP/PA segment coupler, max. Electrical protective measures Protection, depending on housing ver- IP66/IP67 (NEMA Type 4X) sion A suitable cable is required for maintaining the protection rating. WEIGHTRAC 31 • Profibus PA...

  • Page 73: Device Communication Profibus Pa

    0x9702 VE010CF8.GSD PA139702.GSD Cyclical data traffic The master class 1 (e.g. PLC) cyclically reads out measured values from the sensor during opera- tion. The below block diagram below shows which data can be accessed by the PLC. WEIGHTRAC 31 • Profibus PA...
  • Page 74 Primary Temperature Rate Value Fig. 40: WEIGHTRAC 31: Block diagram with AI FB 1 … AI FB 3 OUT values TB Transducer Block FB 1 … FB 3 Function Block Output value, adjustable (depending on instrument type and application - see following list) •...
  • Page 75 The status byte corresponds to profile 3.02 "Profibus PA Profile for Process Control Devices" coded. The status "Measured value OK" is coded as 80 (hex) (Bit7 = 1, Bit6 … 0 = 0). The measured value is transferred as a 32 bit floating point number in the IEEE-754 format. WEIGHTRAC 31 • Profibus PA...
  • Page 76 16, 17, 25, 52, 53, 57, 66, FAILURE 117, 120 Conflict in MGC 121, 122, 141 FAILURE Communication Error in MGC FAILURE MGC-Slave reports Error FAILURE Undefined 21 Undefined 20 Undefined 19 Detector Temperature critical OUT_OF_SPEC Error while Auto-Standardization FAILURE WEIGHTRAC 31 • Profibus PA...

  • Page 77: Dimensions

    You can adapt the settings according to PA profile 3.02. See DIAG_EVENT_SWITCH. 10.3 Dimensions The following dimensional drawings represent only an extract of all possible versions. Detailed dimensional drawings can be downloaded at www.vega.com/downloads under "Drawings". WEIGHTRAC 31 • Profibus PA...
  • Page 78 Aluminium and stainless steel housing M20x1,5/ 119 mm ½ NPT (4.69") 169 mm (6.65") 116,5 mm 175 mm (4.59") (6.89") 90 mm 100 mm (3.54") (3.94") 143,5 mm (5.65") Fig. 43: Aluminium housing or stainless steel housing (precision casting) WEIGHTRAC 31 • Profibus PA...
  • Page 79 10 Supplement WEIGHTRAC 31 ø 76,2 mm (3") Fig. 44: WEIGHTRAC 31 Measurement width WEIGHTRAC 31 • Profibus PA...
  • Page 80 70 mm 70 mm (2.76") (2.76") Fig. 45: WEIGHTRAC 31 in the measuring frame with source container SHLD-1 (can be ordered separately) Maximum conveyor belt width Total width - Crossbeam Clear width (internal dimension) - measuring frame Total height - measuring frame...
  • Page 81 (94.49 in) (111.26 in) (102.32 in) (92.8 in) (90.24 in) (107.99 in) 2800 mm 3198 mm 2971 mm 2775 mm 2710 mm 3000 mm (110.24 in) (125.91 in) (116.97 in) (109.25 in) (106.69 in) (118.11 in) WEIGHTRAC 31 • Profibus PA...

  • Page 82: Industrial Property Rights

    Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellec- tuelle. Pour plus d'informations, on pourra se référer au site www.vega.com. VEGA lineas de productos están protegidas por los derechos en el campo de la propiedad indus- trial. Para mayor información revise la pagina web www.vega.com.
  • Page 83 Functional principle 9 – Electronics module 10 Reset 58 Gamma modulator 10 GSD file 73 Sensor status 40 Service hotline 65 Setup assistant 45 Handling permit 11 Simulation 41 Hardware addressing 33 Software addressing 34 WEIGHTRAC 31 • Profibus PA...
  • Page 84 Tachometer Belt speed Speed 31 Telegram configuration 75 Totalizer 53 Type label 7 Unit - Belt speed 48 Unit of the pulse rate 40 Voltage supply 24 Water cooling 22 X-ray alarm 46 Zero rate 41 WEIGHTRAC 31 • Profibus PA...
  • Page 85 Notes WEIGHTRAC 31 • Profibus PA...
  • Page 86 Notes WEIGHTRAC 31 • Profibus PA...
  • Page 87 Notes WEIGHTRAC 31 • Profibus PA...
  • Page 88 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2020 VEGA Grieshaber KG Phone +49 7836 50-0 Am Hohenstein 113...

Table of Contents