Vega VEGAMET 391 Operating Instructions Manual
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Vega VEGAMET 391 Operating Instructions Manual

4 - 20 ma/hart signal conditioning instrument
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Operating Instructions

VEGAMET 391
4 ... 20 mA/HART signal conditioning instrument
Document ID:
36032
Signal
conditioning instruments
and communication

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Summary of Contents for Vega VEGAMET 391

  • Page 1: Operating Instructions

    Operating Instructions VEGAMET 391 4 … 20 mA/HART signal conditioning instrument Document ID: 36032 Signal conditioning instruments and communication...

  • Page 2: Table Of Contents

    Tendency recognition ......46 Flow measurement ......48 VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 3 11.2 Overview applications/functionality ....60 Supplementary documentation Information: Supplementary documents appropriate to the ordered version come with the delivery. You can find them listed in chapter "Product description". VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 4: About This Document

    The dot set in front indicates a list with no implied sequence. à Action This arrow indicates a single action. Sequence Numbers set in front indicate successive steps in a procedure. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 5: For Your Safety

    2.2 Appropriate use VEGAMET 391 is a universal signal conditioning instrument and power supply unit for connection of a 4 … 20 mA/HART sensor. You can find detailed information on the application range in chapter "Product description".

  • Page 6: Safety Label On The Instrument

    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" VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 7: Product Description

    RS232 or Ethernet interface (optional) USB interface The type label contains the most important data for identification and Type label use of the instrument: Article number Serial number Technical data Article numbers, documentation VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 8: Principle Of Operation

    "VEGA Tools" and "serial number search". 3.2 Principle of operation VEGAMET 391 is a universal signal conditioning instrument for a Application area number of applications such as level, gauge and process pressure measurement. At the same time, it can serve as power supply unit for connected sensors.

  • Page 9: Packaging, Transport And Storage

    3 Product description Further instructions for setting up the web server and e-mail functions are stated in the online help of PACTware or the VEGAMET 391 DTMs as well as the operating instructions manual "RS232/Ethernet connection". 3.4 Packaging, transport and storage Your instrument was protected by packaging during transport.

  • Page 10: Mounting

    (fixed with screws on rear of housing). A VEGAMET 391 in Ex version is an auxiliary, intrinsically safe instrument and may not be installed in explosion-endangered areas.
  • Page 11 73 mm (2.87") Fig. 3: Screw mounting Fixing screws Rear of the housing or mounting plate VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 12: Connecting To Power Supply

    (low impedance). If potential equalisation currents are expected, the screen connection on the side of VEGAMET 391 must be made via a ceramic capacitor (e. g. 1 nF, 1500 V). The low frequency potential equalisation currents are thus suppressed, but the protective effect against high frequency...
  • Page 13 - only the measured value is transmitted. This input is for sensors with their own separate operating voltage (sensors in four-wire version). On a VEGAMET 391 in Ex version, the passive input is not available due to approval/technical reasons.

  • Page 14: Wiring Plan

    11 Measurement data input (passive input), not with Ex-ia version 12 Digital input 1 … 4 13 Common ground for digital input 1 … 4 14 4 … 20 mA/HART sensor (two-wire version) VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 15 11 Measurement data input (passive input), not with Ex-ia version 12 Digital input 1 … 4 13 Common ground for digital input 1 … 4 14 4 … 20 mA/HART sensor (four-wire version) 15 Power supply for four-wire sensor VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 16: Setup With The Integrated Indicating And Adjustment Unit

    Status indication operating relay 1 … 6 [OK] key: Key functions Move to the menu overview Confirm selected menu Edit parameter Save value [->] key to select: menu change list entry Select editing position VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 17: Setup Procedure

    USB interface or one of the optional interfaces (RS232/Ethernet). Further instructions for setting up the web server and e-mail functions are stated in the online help of PACTware or the VEGAMET 391 DTMs as well as the supplementary instructions manual "RS232/Ethernet connection".
  • Page 18 Adjustment unit (for example m or bar) Min./Max. adjustment Activation of the fail safe relay Configuration of the relay outputs (e.g. setup of pump control or overfill protection) Adjustment date/time Network settings with option "Ethernet interface" VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 19 MAC addr., … à Select the requested menu item via the respective keys and confirm with [OK]. You can assign an unambiguous name to VEGAMET 391 via the Device settings - Device- Device-TAG. This function is recommended when several instruments are implemented and a good documentation of larger systems is required.
  • Page 20 10 years by a capacitor as well as a battery. à Carry out your settings via the respective keys and save with [OK]. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 21 VEGAMET 391. Only carry out the adjustment on one instrument, either on VEGAMET 391 or on the sensor. The adjustment in VEGAMET 391 is always carried out in mA (analogue transmission).
  • Page 22 (live adjustment or adjustment with medium). If the adjustment should be carried out independent of the measured level, select the option "Edit". Enter now the distance value in m [m(d)] for the VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 23 Indication values from max. -99999 to +99999 are possible. à Carry out your settings via the respective keys and save with [OK]. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 24 Select the requested mode and save with [OK]. By pushing [->], you reach the next menu item. à Now enter the reference value to which the relay switching points relate. By pushing [->], you reach the next menu item. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 25 Display - Displayed va- requested indication value. The following options are available: Percent: adjusted measured value without taking a probably stored linearization into account Lin. percent: adjusted measured value including a possible linearization. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 26 If the instrument signals a fault, further information about the fault is Diagnostics available under the menu item "Diagnosis - Device status". In addition, the input current as well as the input status for the digital inputs can be displayed. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 27 In mode HART Multidrop, an address from 1 … 15 is assigned to the sensor. By doing so, the current is fix limited to 4 mA and the measured value transmission is only made digitally. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 28 PACTware or the DTM as well as in the operating instructions manual "RS232/Ethernet connection". An overview of the standard functions and their adjustment options can be found in chapter "Functional overview" in the "Supplement". VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 29: Menu Schematic

    6 Setup with the integrated indicating and adjustment unit 6.3 Menu schematic Information: Depending on the instrument version and application, the highlighted menu windows are not always available. Measured value indication Setup assistant VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 30 6 Setup with the integrated indicating and adjustment unit Device settings Measurement loop - Input Meas. loop - Parameter VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 31 6 Setup with the integrated indicating and adjustment unit Meas. loop - Adjustment Meas. loop - Damping Meas. loop - Linearization curve VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 32 6 Setup with the integrated indicating and adjustment unit Meas. loop - Scaling Meas. loop - Meas. loop TAG Meas. loop - Outputs - Relay VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 33 6 Setup with the integrated indicating and adjustment unit Meas. loop - Outputs - Current output Display Diagnostics VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 34 6 Setup with the integrated indicating and adjustment unit Additional settings - Simulation Additional settings - Reset Additional settings - PIN Additional settings - Change sensor address (only with option RS232/Ethernet interface) VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 35 6 Setup with the integrated indicating and adjustment unit Info VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 36: Setup With Pactware

    When installing the driver package "DTM for Communication", the suitable instrument driver is installed automatically. When connecting VEGAMET 391, the driver installation is finished automatically and is ready for operation without a restart. Fig. 7: Connection of the PC via USB...
  • Page 37 Alternatively, the autonomous time or event controlled transmission of measured values via e-mail is also possible. Remote parameter adjustment of the instrument and the connected sensors is also possible with PACTware. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 38 Fig. 10: Connection of the PC via RS232 RS232 interface of the PC RS232 interlink cable (article no. LOG571.17347) RS232 modem connection cable (in the scope of delivery) RS232 interface VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 39: Parameter Adjustment With Pactware

    (offline mode). To do this, click with the right mouse key in the project window on the USB-DTM and select "Additional functions - Change DTM addresses". When connecting via Ethernet, VEGAMET 391 must be provided with Connection via Ethernet a suitable IP address and subnet mask. If the project setup is carried out without assistant (online mode), IP address and subnet mask must be entered additionally in the DTM.

  • Page 40: Setup Web Server/E-Mail, Remote Enquiry

    The connection via Modbus-TCP or ASCII protocol is described in an additional supplementary instruction "Modbus-TCP, ASCII protocol". Both supplementary instructions are attached to each instrument with RS232 or Ethernet interface. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 41: Application Examples

    The filling by a tank car is controll via relay 1 and a valve (overfill protection). The discharge is carried out via a pump and is controlled by relay 2 (dry run protection). The max. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 42: Pump Control 1/2 (Running Time Controlled)

    The signal conditioning instrument selects the relay with the shortest operating time when the switch-on point is reached, and the relay with the longest operating time when the switch-off point is reached. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 43 The assignment of the digital inputs to the relais is preset: Digital input 1 - Relay 1 Digital input 2 - Relay 2 Digital input 3 - Relay 3 VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 44: Pump Control 3/4 (Sequentially Controlled)

    Pump control 4: The upper switching point determines the switch- on point for the relay, whereas the lower switching point determines the switch-off point VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 45 The time respective operating hours are summed up individually in the signal conditioning instrument and can be read out in the menu " Diagnose – VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 46: Tendency Recognition

    Hysteresis: is automatically always 10 % of the value of "Measured value change more than" Reaction in case of failure: In case of a failure, the relay goes into the defined condition VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 47 Difference = 25 % -> Relay OFF Old average value = 62.5 %, new average value = 75 % Difference < 25 % -> Relay ON tm -> max. reaction time VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 48: Flow Measurement

    Max. adjustment: Enter the suitable value for 100 %, i.e. the distance from the sensor to the medium, with the max. flow volume. This is in the following example 0.80 m. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 49 "Display". The following parameters must be adjusted for the totalizer: Measuring unit: Selection of the unit by which the totalizer adds. Indicating format: Selection of the indicating format (number of decimal positions of the counter) VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 50 8 Application examples Information: The totalizer can be reset in the menu "Additional settings" - "Reset" VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 51: Maintenance And Fault Rectification

    9 Maintenance and fault rectification 9 Maintenance and fault rectification 9.1 Maintenance When used as directed in normal operation, VEGAMET 391 is completely maintenance free. 9.2 Rectify malfunctions The operator of the system is responsible for taking suitable measures Reaction when malfunc- to rectify malfunctions.
  • Page 52 à Carry out a fresh adjustment and increase the distance between min. and max. adjustment E021 Scaling span too small à Carry out a fresh scaling, increase the distance between min. and max. scaling. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 53 E110 Relay switching points too close together à Increase the difference between the two relay switching points E111 Relay switching points interchanged à Change relay switching points for "On/Off" VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 54: Instrument Repair

    Please ask the agency serving you for the address of your return shipment. You can find the respective agency on our website www.vega.com under: "Company - VEGA worldwide" VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 55: Dismount

    Materials: see chapter "Technical data" If you have no possibility to dispose of the old instrument professionally, please contact us concerning return and disposal. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...

  • Page 56: Supplement

    16 µA Adjustment range HART sensor Adjustment range ± 10 % of sensor measuring range min. adjustment delta 0.1 % of sensor measuring range Connection cable two-wire screened standard cable VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 57 If inductive loads or stronger currents are switched through, the gold plating on the relay contact surface will be permanently damaged. The contact is then no longer suitable for switching low-level signal circuits. VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 58 Status operating voltage 1 x LED green Status fault signal 1 x LED red Status operating relay 1 … 6 6 x LED yellow Limited temperature range, see ambient conditions VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 59 Depending on the version, instruments with approvals can have different technical data. For these instruments, the corresponding approval documents have to be taken into account. These are part of the delivery or can be downloaded under www.vega.com via "VEGA Tools" and "serial number search" as well as via "Downloads" and "Approvals".

  • Page 60: Overview Applications/Functionality

    The following charts provide an overview of the standard applications and functions of signal conditioning instruments VEGAMET 391/624/625 and VEGASCAN 693. They also give information about whether the respective function can be activated and adjusted via the integrated indicating and adjustment unit (OP) or via PACTware/DTM.
  • Page 61 11 Supplement 11.3 Dimensions 1 2 3 4 5 6 96 mm (3.78") 140 mm (5.51") 111 mm (4.37") VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 62 Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellectuelle. Pour plus d'informations, on pourra se référer au site http://www.vega. VEGA lineas de productos están protegidas por los derechos en el campo de la propiedad industrial. Para mayor información revise la pagina web http://www.vega.com Линии...
  • Page 63 - Removal 51 Flow measurement 16, 21, 24, 48 Online help 28, 39 Fluctuating product surface 23 Operation 22, 39 Flume 48 Front panel mounting 10 - Max. adjustment 22 VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 64 Spherical tank 23 Stocktaking 8 Subnet mask 19 Switching window 24 Tank calculation 39 Tendency 24 Tendency recognition 46 Time setting 20 Trapezoidal weir 48 Triangular weir 48 Type label 7 VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 65 Index VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 66 Index VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 67 Index VEGAMET 391 • 4 … 20 mA/HART signal conditioning instrument...
  • Page 68 All statements concerning scope of delivery, application, practical use and operating conditions of the sensors and processing systems correspond to the information avail- able at the time of printing. © VEGA Grieshaber KG, Schiltach/Germany 2009 Subject to change without prior notice 36032-EN-091116...

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