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Operating

InstructionsVEGAMET 391

4 20 mA signal conditioning instruments

Document ID:36997

Signalconditioning instruments

and communication


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Contents

1 About this document

1.1 Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41.3 Symbolism used. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 For your safety

2.1 Authorised personnel . . . . . . . . . . . . . . . . . . . . . . . . 52.2 Appropriate use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.3 Warning about misuse . . . . . . . . . . . . . . . . . . . . . . . 52.4 General safety instructions . . . . . . . . . . . . . . . . . . . . 52.5 Safety label on the instrument . . . . . . . . . . . . . . . . . . 62.6 CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.7 Safety instructions for Ex areas . . . . . . . . . . . . . . . . . 6

2.8 Overfill protection according to WHG . . . . . . . . . . . . . 62.9 Environmental instructions. . . . . . . . . . . . . . . . . . . . . 6

3 Product description

3.1 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.2 Principle of operation . . . . . . . . . . . . . . . . . . . . . . . . 83.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.4 Packaging, transport and storage . . . . . . . . . . . . . . . 8

4 Mounting

4.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . . 104.2 Mounting instructions . . . . . . . . . . . . . . . . . . . . . . . . 10

5 Connecting to power supply

5.1 Preparing the connection . . . . . . . . . . . . . . . . . . . . . 125.2 Connection procedure. . . . . . . . . . . . . . . . . . . . . . . . 125.3 Wiring plan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6 Setup with the integrated indicating and adjustment unit

6.1 Adjustment system . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2 Setup steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.3 Menu schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7 Setup with PACTware

7.1 Connecting the PC . . . . . . . . . . . . . . . . . . . . . . . . . . 327.2 Parameter adjustment with PACTware . . . . . . . . . . . . 32

8 Application examples

8.1 Level measurement in a cylindrical tank with overfillprotection/dry run protection . . . . . . . . . . . . . . . . . . . 34

8.2 Pump control 1/2 (running time controlled) . . . . . . . . . 358.3 Pump control 3/4 (sequentially controlled) . . . . . . . . . 37

8.4 Tendency recognition . . . . . . . . . . . . . . . . . . . . . . . . 398.5 Flow measurement . . . . . . . . . . . . . . . . . . . . . . . . . . 41

2 VEGAMET 391 4 20 mA signal conditioning instruments

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9 Maintenance and fault rectification

9.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449.2 Rectify malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . 449.3 Instrument repair . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

10 Dismounting

10.1 Dismounting steps . . . . . . . . . . . . . . . . . . . . . . . . . . 4810.2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

11 Supplement

11.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4911.2 Overview applications/functionality. . . . . . . . . . . . . . . 5311.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Supplementary documentation

Information:

S

upplementary documents appropriate to the ordered version comewith the delivery. You can find them listed in chapter "Productdescription".

VEGAMET 391 4 20 mA signal conditioning instruments 3

Contents

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1.1 Function

This operating instructions manual provides all the information youneed for mounting, connection and setup as well as importantinstructions for maintenance and fault rectification. Please read thisinformation before putting the instrument into operation and keep thismanual accessible in the immediate vicinity of the device.

1.2 Target group

This operating instructions manual is directed to trained qualifiedpersonnel. The contents of this manual should be made available tothese personnel and put into practice by them.

1.3 Symbolism used

Information, tip, note

This symbol indicates helpful additional information.

Caution: If this warning is ignored, faults or malfunctions canresult.Warning: If this warning is ignored, injury to persons and/or seriousdamage to the instrument can result.D

anger:I

f this warning is ignored, serious injury to persons and/ordestruction of the instrument can result.

Ex applications

This symbol indicates special instructions for Ex applications.

l List

The dot set in front indicates a list with no implied sequence .

ActionThis arrow indicates a single action.

1 Sequence

Numbers set in front indicate successive steps in a procedure.



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2 For your safety

2.1 Authorised personnel

All operations described in this operating instructions manual must becarried out only by trained specialist personnel authorised by the plantoperator.

During work on and with the device the required personal protectiveequipment must always be worn.

2.2 Appropriate use

VEGAMET 391 is a universal signal conditioning instrument and powersupply unit for connection of a 4 20 mA/HART sensor.

You can find detailed information on the application range in chapter"Product description".

Operational reliability is ensured only if the instrument is properly usedaccording to the specifications in the operating instructions manual aswell as possible supplementary instructions.

For safety and warranty reasons, any invasive work on the devicebeyond that described in the operating instructions manual may becarried out only by personnel authorised by the manufacturer. Arbitraryconversions or modifications are explicitly forbidden.

2.3 Warning about misuse

Inappropriate or incorrect use of the instrument can give rise toapplication-specific hazards, e.g. vessel overfill or damage to systemcomponents through incorrect mounting or adjustment.

2.4 General safety instructions

This is a high-tech instrument requiring the strict observance ofstandard regulations and guidelines. The user must take note of the

safety instructions in this operating instructions manual, the country-specific installation standards as well as all prevailing safetyregulations and accident prevention rules.

The instrument must only be operated in a technically flawless andreliable condition. The operator is responsible for trouble-freeoperation of the instrument.

During the entire duration of use, the user is obliged to determine thecompliance of the required occupational safety measures with thecurrent valid rules and regulations and also take note of newregulations.


2 For your safety

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2.5 Safety label on the instrument

The safety approval markings and safety tips on the device must beobserved.

2.6 CE conformity

This device fulfills the legal requirements of the applicable ECguidelines. By attaching the CE mark, VEGA provides a confirmationof successful testing. You can find the CE conformity declaration in thedownload area of www.vega.com.

2.7 Safety instructions for Ex areas

Please note the Ex-specific safety information for installation and

operation in Ex areas. These safety instructions are part of theoperating instructions manual and come with the Ex-approvedinstruments.

2.8 Overfill protection according to WHG

In Germany the WHG (Water Resource Act) stipulates an overfillprotection for systems that deal with substances hazardous to water.An appropriately certified sensor is the prerequisite for suchprotection. The VEGAMET 391 fulfils the construction and testingprinciples for overfill protection systems. This is certified by the TV

(Technical Control Board) statement "PP 5003/09". You can downloadthis document from our homepage under "Downloads - Approvals -Signal conditioning instruments - Overfill protection".

2.9 Environmental instructions

Protection of the environment is one of our most important duties. Thatis why we have introduced an environment management system withthe goal of continuously improving company environmental protection.The environment management system is certified according to DINEN ISO 14001.

Please help us fulfil this obligation by observing the environmentalinstructions in this manual:

l Chapter "Packaging, transport and storage"l Chapter "Disposal"


2 For your safety

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3.1 Structure

The scope of delivery encompasses:l VEGAMET 391 signal conditioning instrumentl Two clamping elements for panel mountingl Ex separating walll Mini-USB cablel Carrier rail adapter (optional)l Documentation

- this operating instructions manual- Ex-specific "Safety instructions" (with Ex-version)- if necessary, further certificates

OKESCon

VEGAMET 391

1 2 3 4 5 6

1

2

3

4

2

5

Fig. 1: VEGAMET 391

1 Ex separating wall

2 Clamping element for panel mounting

3 Indicating and adjustment unit4 RS232 or Ethernet interface (optional)

5 USB interface

The type label contains the most important data for identification anduse of the instrument:

l Article numberl Serial numberl Technical datal Article numbers, documentation

The serial number allows you to access the delivery data of theinstrument via www.vega.com, "VEGA Tools" and "serial number

search".

Scope of delivery

Constituent parts

Type label



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3.2 Principle of operation

VEGAMET 391 is a universal signal conditioning instrument for avariety of applications such as level, gauge and process pressuremeasurement. At the same time, it can serve as power supply unit forconnected sensors. VEGAMET 391 is designed for connection of any4 20 mA sensor.

The VEGAMET 391 signal conditioning instrument can power theconnected sensor and process its measurement signals. Therequested parameter is shown on the display and also outputted to theintegrated current output for further processing. The measurementsignal can thus be transferred to a remote indication or a superordinatecontrol system. Six operating relays for control of pumps or otherdevices are also integrated.

Wide-range power supply unit with 20 253 V AC/DC for world-wideuse.

Detailed information about the power supply can be found in chapter"Technical data".

3.3 Operation

The instrument can be adjusted with the following adjustment media:

l With integrated indicating and adjustment unit

l an adjustment software according to FDT/DTM standard, e.g.PACTware and a Windows PC

The entered parameters are generally saved in VEGAMET 391, whenused with PACTware and PC also optionally in the PC.

Information:

When using PACTware and the respective VEGA DTM, additionalsettings can be carried out which are not possible or only partlypossible with the integrated indicating and adjustment unit. Commu-nication is carried out via the integrated USB interface.

3.4 Packaging, transport and storage

Your instrument was protected by packaging during transport. Itscapacity to handle normal loads during transport is assured by a testaccording to DIN EN 24180.

The packaging of standard instruments consists of environment-friendly, recyclable cardboard. For special versions, PE foam or PE foilis also used. Dispose of the packaging material via specialisedrecycling companies.

Application area

Functional principle

Voltage supply

Packaging



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Transport must be carried out under consideration of the notes on thetransport packaging. Nonobservance of these instructions can causedamage to the device.

The delivery must be checked for completeness and possible transitdamage immediately at receipt. Ascertained transit damage orconcealed defects must be appropriately dealt with.

Up to the time of installation, the packages must be left closed andstored according to the orientation and storage markings on theoutside.

Unless otherwise indicated, the packages must be stored only underthe following conditions:

l Not in the openl Dry and dust freel Not exposed to corrosive medial Protected against solar radiationl Avoiding mechanical shock and vibration

l Storage and transport temperature see chapter "Supplement -Technical data - Ambient conditions"

l Relative humidity 20 85 %

Transport

Transport inspection

Storage

Storage and transport

temperature



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4 Mounting

4.1 General instructions

The instrument is designed for recessed installation in a front panel,housing front plate or a switching cabinet door. The required cut-out is92 x 92 mm according to EN 60529. When installed correctly,protection rating IP 65 is guaranteed. As an alternative, the instrumentcan be mounted into a switching cabinet or housing by means of fourscrews (fixed with screws on rear of housing). As an option, amounting adapter for carrier rail mounting is available.

A VEGAMET 391 in Ex version is an auxiliary, intrinsically safeinstrument and may not be installed in explosion-endangered areas.

Before setup, the Ex separating wall must be attached with Exversions. Safe operation can be only ensured if the operatinginstructions manual and the EG type approval certificate are observed.VEGAMET 391 must not be opened.

4.2 Mounting instructions

1 Check the correct hold of the seal directly behind the front plateand shift the instrument from the front into the front panel cut-out.

2 Shift the two tensioning elements into the provided gaps.

3 Screw in the two screws of the tensioning elements steadily with ascrewdriver.

3

2

1

OK

ESCon

1 2 3 4 5 6

Fig. 2: Front panel mounting

1 Front panel, front plate or switching cabinet door2 Tensioning elements

3 Slotted screw

Installation possibilities

Front panel mounting


4 Mounting

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Fasten the instrument by means of four screws (max. 4 mm) onthe inner side of the housing or the mounting plate according to thefollowing illustration.

73 mm(2.87")

86,5

mm

(3.4

1")

1

2

Fig. 3: Screw mounting

1 Fixing screws

2 Rear of the housing or mounting plate

1 Fasten the mounting plate to the instrument with the four attached

hexagon screws.2 Screw the carrier rail adapter to the mounting plate by using the

four attached Phillips head screws.

1 2 3 4

Fig. 4: Carrier rail mounting

1 Hexagon screws

2 Mounting plate

3 Carrier rail adapter

4 Phillips head screws

Screw mounting

Carrier rail mounting


4 Mounting

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5.1 Preparing the connection

Always keep in mind the following safety instructions:l Connect only in the complete absence of line voltagel If overvoltages are expected, install overvoltage arresters

In hazardous areas you should take note of the appropriateregulations, conformity and type approval certificates of the sensorsand power supply units.

The voltage supply can be 20 253 V AC/DC, 50/60 Hz.

The operating voltage of VEGAMET 391 is connected with standardcable according to the national installation standards.

Standard two-wire cable can be used for connecting the sensors. Thescreening is absolutely necessary to ensure interference-free oper-ation with HART sensors.

Connect the cable screen on both ends to ground potential. In thesensor, the screen must be connected directly to the internal groundterminal. The ground terminal on the outside of the sensor housingmust be connected to the potential equalisation (low impedance).

If potential equalisation currents are expected, the screen connectionon the side of VEGAMET 391 must be made via a ceramic capacitor(e. g. 1 nF, 1500 V). The low frequency potential equalisation currentsare thus suppressed, but the protective effect against high frequencyinterference signals remains.

Take note of the corresponding installation regulations for Exapplications. In particular, make sure that no potential equalisationcurrents flow over the cable screen. In case of grounding on both sidesthis can be achieved by the use of a capacitor or a separate potentialequalisation.

5.2 Connection procedure

Move on to electrical connection and proceed as follows:

1 Mount the instrument as described in the previous chapter

2 Remove terminal strip 1 on the upper side of the instrument

3 Connect sensor cable to terminal 1/2 (active input) or 5/6 (passiveinput)

4 If necessary, connect digital inputs to 8 125 Plug terminal strip 1 to the upper side of the instrument

6 Remove terminal strip 2 on the lower side of the instrument

Note safety instructions

Take note of sa-

fety instructions

for Ex applica-

tions

Select power supply

Select connection cable

Cable screening and

grounding

Select connec-

tion cable for Ex

applications



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7 Connect power supply (switched off) to terminal 13/14

8 If necessary, connect relays or other outputs

9 Plug in terminal strip 2 on the lower side of the instrument

10 For connection of additional relais to terminal strip 3, you have to

proceed as described beforeThe electrical connection is finished.

Remember that with Ex applications, the Ex separating wall must beplugged onto the upper side of the instrument before setup.

Information:

l On the active input (terminal 1/2), VEGAMET 391 provides powerfor the connected sensors. Power supply and measurement dataare transmitted over the same two-wire cable. This mode is

provided for connection of measuring transducers without sepa-rate operating voltage (sensors in two-wire version).

l On the passive input (terminals 5/6), the sensors are not suppliedwith energy - only the measured value is transmitted. This input isfor sensors with their own separate operating voltage (sensors infour-wire version). On a VEGAMET 391 in Ex version, the passiveinput is not available due to approval/technical reasons.



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5.3 Wiring plan

87 11103 95421 6 12

1718 141522 1620212324 19 13

2930 262734 2832333536 31 25

+- L+N-

+ + + + + --

5 4 36

9

1 7 82

10 11 12 13

14

OKESCon

1 2 3 4 5 6

Fig. 5: Terminal assignment with two-wire sensor

1 Operating relay1

2 Operating relay2

3 Operating relay3

4 Operating relay4

5 Operating relay5

6 Operating relay6

7 Current output

8 Operating voltage of the signal conditioning instrument

9 Measurement data input with sensor supply (active input)

10 Connection for HART modem for sensor parameter adjustment11 Measurement data input (passive input), not with Ex-ia version

12 Digital input 1 4

13 Common ground for digital input 1 414 4 20 mA/HART sensor (two-wire version)

Wiring plan for two-wire

sensor



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+ + + + + --

9 10 11 12

1415

13

OKESCon

1 2 3 4 5 6

87 11103 95421 6 12

1718 141522 1620212324 19 13

2930 262734 2832333536 31 25

+- L+N-

5 4 36

1 7 82

Fig. 6: Terminal assignment with four-wire sensor

1 Operating relay1

2 Operating relay2

3 Operating relay3

4 Operating relay4

5 Operating relay5

6 Operating relay6

7 Current output

8 Operating voltage of the signal conditioning instrument9 Measurement data input with sensor supply (active input)

10 Connection for HART modem for sensor parameter adjustment

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

Wiring plan for four-wire

sensor



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6 Setup with the integrated indicating and

adjustment unit

6.1 Adjustment system

The integrated indicating and adjustment unit is used for measuredvalue display, adjustment and diagnosis of VEGAMET 391. Theindication and adjustment are carried out via four keys and a clear,graphic-capable display with background lighting. The adjustmentmenu with selectable language is clearly structured and enables easysetup.

Certain adjustment options are not available or only partially availablewith the integrated indicating and adjustment unit, e.g. the settings forflow measurement. For such applications, the use of PACTware with

appropriate DTMs is recommended.

OKESCon

VEGAMET 391

1 2 3 4 5 6

4

5

3

2

1

Fig. 7: Indicating and adjustment elements

1 LC display2 Adjustment keys

3 Status indication operation4 Status indication fail safe relay5 Status indication operating relay 1 6

l [OK] key:- Move to the menu overview- Confirm selected menu- Edit parameter- Save value

l[->] key to select:- Menu change- Select list entry- Select editing position

Function

Indicating and adjust-

ment elements

Key functions



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l [+] key:- Change value of the parameter

l [ESC] key:- interrupt input

- jump to the next higher menu

Note:

Approx. 10 minutes after the last pressing of a key, an automatic resetto measured value indication is triggered. Any values not confirmedwith [OK] will not be saved.

6.2 Setup steps

Through parameter adjustment, the instrument is adapted to theindividual application conditions. A measurement loop calibration isthe most important step and should always be carried out. A scaling ofthe measured value to the desired physical variable and unit, possiblyincluding a linearization curve, is often useful. The adaptation of therelay switching points or the setting of an integration time (damping) tosmooth the measured value are further standard adjustment options.

A setup assistant is available for easy, convenient setup. It guides theuser through the standard applications and settings step by step.

Information:

When using PACTware and the respective DTM, additional settingscan be carried out which are not possible or only partly possible withthe integrated indicating and adjustment unit. Communication iscarried out via the integrated USB interface. You find furtherinformation in chapter "Set up with PACTware".

After being switched on, VEGAMET 391 first of all carries out a shortself-check. The following steps are carried out:

l Internal check of the electronicsl indication of the instrument type, firmware version as well as the

instrument TAG (instrument name)l The output signals jump briefly to the set fault value

Then the current measured values will be displayed and outputted.

The measured value indication shows the digital indication value , themeasurement loop name (measurement loop TAG) and the unit. Ananalogue bar graph can also be blended in. If flow measurement isactivated, an additional indication window with totalizer is available. Bypushing the [>] key you can move between the different indicationoptions.

Parameter adjustment

Switch on phase

Measured value indica-

tion



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By pushing [OK], you move from the measured value indicationinto the main menu. Here, you have the choice between the setupassistant for the most important settings or the complete classicalmenu.

At the beginning of every setup or parameter adjustment, you have thechoice of continuing with the setup assistant or the classic menuguidance. We recommend using the setup assistant for the initialsetup. If later on individual settings should be corrected or added, themost expedient way to do this is via the classic menus.

Select the menu item "Setup assistant" with [->]and confirm with[OK].

The setup assistant leads you step-by-step throught the standardsettings. All steps must be passed completely, it is not possible to

interrupt the procedure. Following the individiual steps which can bepassed through with the assistant:

l Device-TAG (individually adjustable instrument name)l Measurement loop TAG (individually adjustable measurement

loop designation)l Measured variable (for example level or process pressure)l Min./Max. adjustmentl Activation of the fail safe relayl Configuration of the relay outputs (e.g. setup of pump control or

overfill protection)

When changing the measurement, the assistant can be opened anytime. The subsequent steps can be also reached via the classicalmenu guidance. The description of the individual menu items isavailable in the classical menu guidance. In chapter "Applicationexamples" you will find further information to the setup.

The main menu is divided into six areas with the following functions:

l Device settings: Includes the device-TAGl Measurement loop: Includes adjustment, damping, linearization,

scaling, outputs, l Display: Includes settings to the displayed measured value,

languafe setting und brightness of the background lighting

Main menu/Setup assis-

tant

Setup assistant

Classical menu gui-

dance/main menu



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l Diagnosis Includes information to the device status, errormessages, input current, digital inputs

l Additional settings: Contains simulation, reset, PIN, l Info: Shows serial number, software version, last change, instru-

ment features,

Select the requested menu item via the respective keys andconfirm with [OK].

You can assign an unambiguous name to VEGAMET 391 via theDevice-TAG. This function is recommended when several instruments

are implemented and a good documentation of larger systems isrequired.

Carry out your settings via the appropriate keys and save with[OK].

The measured variable defines the applicaton of the measurementloop, the following settings are available depending on the connectedsensor:

l Levell Process pressurel Universall Flow (only after activating via PACTware or DTM)

Carry out your settings via the appropriate keys and save with [OK].

Through the adjustment, the input value of the connected sensor isconverted into a percentage value. This conversion steps allows toimage any individual input value range to a relative range (0 % to100 %). With the adjustment in mA, two sensor current values areentered which correspond ideally to the levels 0 % and 100 %. As analternative, sensor current values can be entered corresponding to

individual levels in percent.T

he higher the diff

erence between thesevalue, the more exact will be the measurement.

Device settings - Device-

TAG

Meas. loop - Parameter

Meas. loop - Adjustment



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With [OK] you prepare the percentage value for editing, with [->]you place the cursor to the requested position. Set the requestedpercentage value with [+] and save with [OK].

After entry of the percentage value for the min. adjustment, thesuitable current value must be entered. If you want to use thecurrently measured value, select the menu item "Accept" (liveadjustment or adjustment with medium). If the adjustment shouldbe carried out independently of the measured level, then select theoption "Edit". Enter now the current value in mA that is suitable forthe percentage value (dry adjustment i.e. adjustment without

medium). Save your settings with [OK]and move to "Max. adjustment" with

[->].

As described previously, enter now the percentage value for max.adjustment and confirm with [OK].

After entry of the percentage value for the max. adjustment, the

suitable current value must be entered. If you want to use thecurrently measured distance value, select the menu item "Accept"(live adjustment or adjustment with medium). If the adjustmentshould be carried out independently of the measured level, thenselect the option "Edit". Enter now the current value in mA that issuitable for the percentage value (dry adjustment i.e. adjustmentwithout medium).

Finally save your settings with [OK], the adjustment is finished.

To suppress fluctuations in the measured value display, e.g. caused

by an agitated product surface, an integration time can be set. Thistime can be between 0 and 999 seconds. Remember that the reactiontime of the entire measurement will then be longer and the sensor willreact to measured value changes with a delay. In general, a period of afew seconds is sufficient to smooth the measured value display.

C

arry out your settings via the appropriate keys and save with[OK].

Meas. loop - Damping



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A linearization is necessary for all vessels in which the vessel volumedoes not increase linearly with the level, for example, with a cylindricalor spherical tank. Corresponding linearization curves are preprog-rammed for these vessels. They represent the correlation between thelevel percentage and vessel volume. By activating the appropriatecurve, the volume percentage of the vessel is displayed correctly. Ifthe volume should not be displayed in percent but e.g. in l or kg, ascaling can be also set.


Scaling means converting the measured value into a certain parameterand unit. The linearized percentage value is the source signal which isused as basis for the scaling. The indication can then show the volumein litres e.g., instead of the percentage value. Indication values frommax. -99999 to +99999 are possible.


In this menu item you can enter an unambiguous designation for eachmeasurement loop, e.g. the measurement loop name or the tank orproduct designation. In digital systems and in the documentation oflarger plants, a singular designation should be entered for exactidentification of individual measurement points.


Under "Outputs", you find the relay/current outputs. With the relayoutput, the requested mode ("Overfill protection/Dry run protection" or"Pump control") must first be selected.

Meas. loop - Lineariza-

tion curve

Meas. loop - Scaling

Meas. loop - Meas. loop

TAG

Meas. loop - Outputs -

Relays outputs



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l Overfill protection: Relay is switched off when the max. level isexceeded (safe currentless condition), relay is switched on againwhen the level falls below the min. level (switch on point < switchoff point)

l Dry run protection: Relay is switched off when the level fallsbelow the min. level (safe currentless condition), relay is switchedon again when the max. level is exceeded (switch on point >switch off point)

l Pump control: With several pumps having the same function, thepumps will be alternately switch on and off according to theadjustable criteria

Additional modes such as "Switching window", "Flow" and "Tendency"can be only adjusted via PACTware and DTM.

Relay 6 can be also configured as fail safe relay. The following

example shows the adjustment of an overfill protection. Furtherinformation to pump control, tendency recognition or flow measure-ment are available in chapter "Application examples".

Select the requested mode and save with [OK]. By pushing [->], youreach the next menu item.

Now enter the reference value to which the relay switching pointsrelate. By pushing [->], you reach the next menu item.

Now enter the switching points for switching the relay on and off.

In the following window the reaction of the relay in case of failure canbe determined. Here you can define whether, in case of failure, theswitching condition of the relay remains unchanged or the relay isswitched off.



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The current output is used to transfer the measured value to asuperimposed system, for example to a PLC, a control system or ameasured value indication. This is an active output, i.e. a current isprovided actively. The processing must hence have a passive currentinput.

The characteristics of the current output can be set to 0 20 mA,4 20 mA or inverted. The reaction in case of failure can also beadapted to the requirements. The measured variable you refer to canalso be selected.


In the menu item "Display - Indication value", you can set therequested indication value. The following options are available:

l Percent: adjusted measured value without taking a probablystored linearization into account

l Lin. percent: adjusted measured value by taking a probablystored linearization into account

l Scaled: adjusted measured value by taking a probably stored

linarization into account as well as the values entered under"Scaling"

l Sensor value: input value delivered by the sensor. Presentation inthe selected adjustment unit


In the menu item "Display - Language", the requested displaylanguage can be adjusted. The following languages are available:

Meas. loop - Outputs -

Current output

Display - Displayed va-

lue

Display - Language



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l Deutschl Englishl Frenchl Spanishl Russianl Italianl Dutch


In the menu item "Display - Brightness", the brightness of thebackground lighting can be continuously adjusted.


If the instrument signals a fault, further information about the fault isavailable under the menu item "Diagnosis - Device status". In addition,the input current as well as the input status for the digital inputs can bedisplayed.

T

he simulation of a measured value is used to check the outputs andconnected components. The simulation can be applied to thepercentage value, the lin. percentage value and the sensor value.

Note:

Please note that connected system parts (valves, pumps, motors,control systems) are influenced by the simulation, thus unintentionalplant operating conditions can occur. The simulation is terminatedautomatically after approxminately 10 minutes.

Display - Brightness

Diagnostics

Additional settings -

Si-mulation



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A reset to basic adjustment changes all settings (with only a few

exceptions) back to factory default. Exceptions are: Host name, IP-address, subnet mask, time, language.

The signal conditioning instrument can be locked with a PIN to protectthe adjusted parameters against unauthorized modification. After

activation,

it is not possible to carry out a parameter adjustment via thebuilt-in indicating and adjustment unit without entering the previouslydetermined PIN. This locking does not apply to parameter adjustmentwith PACTware and the respective DTM.

In the menu item "Info" the following information is available:

l Sensor type and serial numberl Date of manufacture and software versionl Date of last change using PCl Features of VEGAMET 391l MAC address (with interface option Ethernet)

Additional adjustment and diagnostics options are available via theWindows software PACTware and the suitable DTM. Connection iscarried out via the USB interface in the instrument. Further informationis available in chapter "Parameter adjustment with PACTware" and inthe online help of PACTware or the DTMs.

Additional settings - Re-

set

Additional settings - PIN

Info

Optional settings



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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



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Device settings

Meas. loop - Parameter

Meas. loop - Adjustment



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Meas. loop - Damping

Meas. loop - Linearization curve

Meas. loop - Scaling

Meas. loop - Meas. loop TAG



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Meas. loop - Outputs - Relay

Meas. loop - Outputs - Current output

Display



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Diagnostics

Additional settings - Simulation

Additional settings - Reset



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Additional settings - PIN

Info



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7.1 Connecting the PC

For a brief connection to the PC, for example for parameteradjustment, you should use the USB interface. The necessaryconnection socket is on the lower side of all instrument versions. Keepin mind that correct functioning of the USB interface is only guaranteedin the (limited) temperature range of 0 60 C.

Note:

The connection via USB requires a driver. First of all, install the driverbefore connecting VEGAMET 391 to the PC.

The required USB driver is included on the CD "DTM Collection". Youshould always use the latest version to ensure support of all instrumentfunctions. The system requirements for operation correspond to thoseof the "DTM Collection" or of PACTware.

During installation of the driver package "DTMforCommunication", thesuitable instrument driver is installed automatically. When VEGAMET391 is connected, the driver installation is completed autonomouslyand is ready for operation without a restart.

1

3

2

Fig. 8: Connection of the PC via USB

1 USB interface of the PC

2 Mini-USB connection cable (in the scope of delivery)

3 USBinterface of

VEGAMET 391

7.2 Parameter adjustment with PACTware

As an alternative to the integrated indicating and adjustment unit, theadjustment can be also carried out via a Windows PC. For this, theconfiguration software PACTware and a suitable instrument driver(DTM) according to the FDT standard are required. The currentPACTware version as well as all available DTMs are compiled in aDTM Collection. Furthermore, the DTMs can be integrated into otherframe applications compliant with the FDT standard.

Connection of the

PCvia

USB

Prerequisites



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Note:

To ensure that all instrument functions are supported, you shouldalways use the latest DTM Collection. Furthermore, not all describedfunctions are included in older firmware versions. The latest instrument

software can be also downloaded from our homepage.A

description ofthe update procedure is also available in the Internet.

Further setup steps are described in the operating instructions manual"DTM Collection/PACTware" attached to each DTM Collection andwhich can also be downloaded from the Internet. A detaileddescription is available in the online help of PACTware and the DTMsas well as in the supplementary instructions manual "RS232/Ethernetconnection".

When connecting via USB, the instrument serial number must beentered as address in the DTM during project setup without assistant(offline mode). To do this, click with the right mouse key in the projectwindow on the USB-DTM and select "Additional functions - ChangeDTM addresses".

All device DTMs are available as a free-of-charge standard versionand as a full version that must be purchased. In the standard version,all functions for complete setup are already included. An assistent forsimple project configuration simplifies the adjustment considerably.

Saving/printing the project as well as import/export functions are alsopart of the standard version.

In the full version there is also an extended print function for completeproject documentation as well as a save function for measured valueand echo curves. In addition, there is a tank calculation program aswell as a multiviewer for display and analysis of the saved measuredvalue and echo curves.

Connection via USB

Standard/Full version



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8.1 Level measurement in a cylindrical tank with

overfill protection/dry run protection

The level is detected via a sensors and transmitted to the signalconditioning instrument by means of a 4 20 mA signal. Here, anadjustment is carried out converting the input value delivered by thesensor into a percentage value.

Due to the geometrical form of the cylindrical tank, the vessel volumedoes not increase linear with the level. This can be compensated byselecting the linearization curve integrated in the instrument. Thiscurve states the relation between percentage level and vessel volume.If the level should be displayed in litres, also a scaling must be carried

out. For this purpose, the linearized percentage value is converted intoa volume, for example with the unit litres.

The filling and emptying is controlled vial relay 1 and 2 integrated inthe signal conditioning instrument. During filling, relay mode "Overfillprotection" is adjusted. The relay is hence switched off (safecurrentless condition) when the max. level is exceeded, when fallingbelow the min. level it is switched on again (switch on point < switch offpoint). During emptying, mode "Dry run protection" is used. This relayis hence switched off when falling below the min. level (safecurrentless condition), when falling below the min. level it is switched

on again (switch on point>

switch off

point).

Rel. 1 Rel. 2

Rel. 1: 90%

Rel. 2: 5%

100%

0%

Fig. 9: Example for a level measurement, cylindrical tank

A cylindrical tank has a capacity of 10000 litres. The measurement is

carried out with a level sensor operating according to the principle ofthe guided microwave. The filling by a tank car is controll via relay 1and a valve (overfill protection). The discharge is carried out via apump and is controlled by relay 2 (dry run protection). The max.


Example



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volume should be at 90 % level, these are 9538 litres with a standardvessel (according to bearing chart). The min. level should be adjustedto 5 %, this corresponds to 181 litres. The volume should be displayedin litres.

Carry out the adjustment in the signal conditioning instrument asdescribed in chapter "Setup steps". No additional adjustment musthence be carried out on the sensors. For the max. adjustment, fill thevessel up to the requested max. level and accept the actuallymeasured value. If this is not possible, the respective current value canbe entered alternatively. For the min. adjustment, empty the vessel upto the min. level or enter the respective current value.

To display the percentage level correctly, select under "Measurementloop - Linearization curve" the entry "Cylindrical tank".

The display the volume in litres, you have to enter under "Measure-ment loop - Scaling" as unit "Volume" in litres. Finally, the allocation iscarried out, in this example 100 % 10000 litres and 0 % 0 litres.

Percent is selected as reference value for the relays. The mode ofrelay 1 is set to overfill protection, relay 2 gets mode dry run protection.To ensure that the pump switches off in case of failure, the reaction incase of failure should be adjusted to switching status OFF. Theswitching points are adjusted as follows:

l Relay 1: Switch-off point 90 %, switch-on point 85 %

l Relay 2: Switch-off point 5 %, switch-on point 10 %Information:

The switch on and off point of the relays must not be adjusted to thesame switching point because this would cause a permanent switchinon and off when this threshold is reached. To avoid this effect also withfluctuating product surface, a difference (hysteresis) of 5 % is usefulbetween the switching points.

8.2 Pump control 1/2 (running time controlled)

Pump control 1/2 is used to control several pumps with the samefunction dependent on the previous running time. Always the pumpwith the shortest running time is switched on and the pump with thelongest running time switched off. With increased requirement, allpumps can also run at the same time dependent on the enteredswitching points. With this measure, a steady utilization of the pumpsis achieved and the reliability increased.

All relays with activated pump control are not assigned to a certainswitching point but are switched on or off depending on the operating

time.T

he signal conditioning instrument selects the relay with theshortest operating time when the switch-on point is reached and therelay with the longest operating time when the switch-off point isreached.

Adjustment

Linearisation

Scaling

Relay




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Probable failures of the pumps can be processed in addition via thedigital inputs.

With this pump control, there are two different versions:

l Pump control 1: The upper switching point determines the switch-off point for the relay, whereas the lower switching pointdetermines the switch-on point

l Pump control 2: The upper switching point determines the switch-on point for the relay, whereas the lower switching pointdetermines the switch-off point

Two pumps should empty the vessel when a certain level is reached.At 80 % filling, the pump with the shortest running time should switchon. If the level nevertheless increases, a second pump should switchon at 90 %. Both pumps should switch off again at 10 % filling.

Select in the DTM navigation section the menu items "Meas. loop -Outputs - Relay".

l Set mode "Pump control 2" for relay 1 and 2.l Enter the switching points for the concerned relays as follows:

- Relay 1 upper switching point = 80.0 %- Relay 1 lower switching point = 10.0 %- Relay 2 upper switching point = 90.0 %- Relay 2 lower switching point = 10.0 %

The function of the pump control 2 is shown in detail in the followingdiagram. The previously described example is used as a basis.

Rel. 1: 80% On

On

Off

Off

On

Rel. 2: 90% On

Rel. 1, 2: 10% Off

10 30 20 20 15 t [h]5

Rel. 1

Rel. 2

Fig. 10: Example of a pump control 2

With a pump control, pump monitoring can be switched on. For thispurpose, a return signal is required on the respective digital input. The

assignment of the digital inputs to the relais is fixed:

l Digital input 1 - Relay 1l Digital input 2 - Relay 2

Example

Setup

Pump monitoring



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l Digital input 3 - Relay 3l Digital input 4 - Relay 4

If the pump monitoring for a relay was switched on, a timer is startedwhen the relay is switched on (time allowance with parameter "Report

time"). I

f the checkback signal comes from the pump on the respectivedigital input within the defined report time, the pump relay remainsenergized, otherwise the relay is immediately switched off and a faultsignal outputted. A fault signal and switching off of the relay is carriedout even if the relay is already switched on and the pump checkbacksignal changes during the running time of the pump. In addition, aswitched-off relay of the pump control is looked for and switched oninstead of the disturbed relay. A Low signal on the digital input isevaluated as a pump error signal.

To undo the fault message, the signal on the digital input must changeto "Good" or must be reset via the menu. If the fault message is reset

and the pump still delivers a failure, a fault message is triggered afterthe enquiry time. The enquiry time is started as described above whenswitching on the relay.

Switch on reaction of the pump control 2

When the signal conditioning instrument is switched on, the relays areat first in a switched-off status. Depending on the input signal and theswitched-on period of the individual relays, the following relayconditions can occur after the start procedure:

l Input signal is higher than the upper switching point -> Relay withthe shortest switch on period is switched on

l Input signal is between lower and upper switching point -> Relayremains switched off

l Input signal is smaller than the lower switching point -> Relayremains switched off

8.3 Pump control 3/4 (sequentially controlled)

Pump control 3/4 is used to control several pumps with the samefunction alternately and in a fixed sequence. In case of an increasedrequirement, all pumps can run at the same time depending on the

entered switching points. With this measure, a steady utilization of thepumps is reached and the reliability increased.

All relays with activated pump control are not assigned to a certainswitching point but are switched on and off alternately. The signalconditioning instrument selects when reaching a switching on point,the relay which is next in the sequence. When reaching a switching offpoint, the relays are switched off in the sequence they were switchedon.

Via the digital inputs, possible fault signals of the pumps can also beevaluated. You can find the description in the application example

"Pump control 1/2" under "Pump monitoring".

With this pump control, there are two different versions:




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l Pump control 3: The upper switching point determines the switch-off point for the relay, whereas the lower switching pointdetermines the switch-on point

l Pump control 4: The upper switching point determines the switch-on point for the relay, whereas the lower switching point

determines the switch-off pointThe sequence cannot be changed, the relay with the lowest index isswitched on first, the the relay with the next higher index. After therelay with the highest index, it is returned to the relay with the lowestindex, for example Rel. 1 -> Rel. 2 -> Rel. 3 -> Rel. 4 -> Rel. 1 -> Rel. 2 The sequence applies only to those relays assigned to the pumpcontrol.

In a waste water disposal system, a sump should be pumped emptywhen a certain level is reached. Three pumps are available for this. At60 %

level, pump1

should run until the level has fallen below10 %

.I

fthe 60 % point is exceeded again, the same task is transferred topump 2. In the third cycle, pump 3 is activated; after that, pump 1again. If the level continues to rise despite operation of a pump, anadditional pump switched on when the level exceeds the 75 %switching point. And if the level still rises further due to extreme inflowand exceeds the 90 % limit, pump 3 is also switched on.

Select in the DTM navigation section the menu items "Meas. loop -Outputs - Relay".

l Set mode "Pump control 4" for relays 1 3.l Enter the switching points for the concerned relays as follows:

- Relay 1 upper switching point = 60.0 %- Relay 1 lower switching point = 10.0 %- Relay 2 upper switching point = 75.0 %- Relay 2 lower switching point = 10.0 %- Relay 3 upper switching point = 90.0 %- Relay 3 lower switching point = 10.0 %

The function of the pump control 4 is shown in detail in the followingdiagram. The previously described example is used as a basis.

Rel. 1: 60% On

Rel. 1..3: 10% Off

Rel. 2: 75% On

Rel. 3: 90% On

t(h)

Rel. 3

Rel. no.

Rel. 2

1 2 3 1 2 3 1 2 3 1 2

Rel. 1

Fig. 11: Example of a pump control 4

Example

Setup



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If all pumps have the same capacity and are used for the same taskalternately, the running time should always be roughly the same. Therespective operating hours are summed up individually in the signalconditioning instrument and can be read out in the menu " Diagnose Switched-on time ". If a considerable difference between the pumps isdetermined, it means the capacity of one of the pumps must havefallen considerably. This information can be consulted for diagnosisand service, e.g. to recognize plugged-up filters or worn out bearings.

Since in this case, all pumps are operated alternately in the samerange, the switch on and switch off points should be theoretically bythe same. Due to this, all relays would always switch together. Toreach the respective switchng condition, the requested switchingpoints must be assigned to a relay, switching points are assigned tothe other relays which are never reached in normal operation, forexample 110 % and -10 %.

Note:

The index of the lastly switched on relay is not saved in case of voltageloss, this means that adter switching on the signal conditioninginstrument, always the relay with the lowest index starts.

8.4 Tendency recognition

The function of the tendency recognition is to recognize a defined

change within a certain time period and to transfer this information to arelay output.

The information for tendency recognition is generated out of themeasured value change per time unit. The output variable is alwaysthe measured value in percent. The function can be configured forrising and falling tendency. The actual measured value is determinedand summed with a sample rate of a second. After the max. reactiontime, the average value is generated out of this sum. The realmeasured value change results then of the newly calculated averagevalue less the previously calculated average value. If this difference

exceeds the defi

ned percentage value, the tendency recognitionresponds and the relay deenergises.

Note:

The activation and configuration of the tendency recognition requiresPACTware with the suitable DTM. Setting parameters via theintegrated indicating and adjustment unit is not possible.

l Measured value change higher: Measured value change pertime unit, at which the tendency recognition should respond

l Max. reaction time: Time after which a new measured valuegeneration is carried out and the measured value change isrecalculated

Diagnosis via running

time


Principle of operation

Parameter



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l Hysteresis: is automatically always 10 % of the value of"Measured value change larger than"

l Reaction in case of failure: In case of a failure, the relay goesinto the defined condition

Note:After switching on or a failure, always two complete cycles must beexecuted until a measured value difference can be calculated and atendency can be outputted.

The level in a basin should be monitored on rising tendency. If the riseis higher than 25 % per minute, an additional emptying pumpt shouldbe switched on. The max. reaction time should be one minute. In caseof a probable failure, the pump should be switched off.

Select in the

DTMnavigation section the menu items

"Meas. loop -

Outputs - Relay".

l E.g. set for relay 1 the mode "Rising tendency"l Select under "Reaction in case of failure" the option "Switching

condition off"

l Enter the following values into the parameter fields:- Measured value more than 25 %/min.- Max. reaction time 1 min.

The function of the tendency recognition is shown in detail in thefollowing diagram. The previously described example is used as a

basis.

t

tm tm tm tm

120 180 240ON

OFF

60 [sec]

1 2 3 4

5

... ... ... ...

100

75

50

25

0

%

...

Fig. 12: Example for tendency recognition

1 Old average value = 25%, new average value = 25%Difference < 25% -> Relay ON

2 Old average value = 25%, new average value = 37.5%Difference < 25% -> Relay ON

3 Old average value = 37.5%, new average value = 62.5%Difference = 25% -> Relay OFF

4 Old average value = 62.5%, new average value = 75%

Difference < 25% -> Relay ON5 tm -> max. reaction time

Example

Setup



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8.5 Flow measurement

For flow measurement in open flumes, a constriction or standardisedflume must be used. Depending on the flow volume, this constrictiongenerates a certain amount of backup. The flow can be determinedfrom the height of this backup. The flow volume is outputted by anappropriate number of pulses on the relay or current output and canthus be further processed by connected downstream instruments.

There is also the possibility to sum up the flow volume by means of atotalizer, the result is available on the display and as PC/DCS value.

Depending on the type and version, each flume generates a differentbackwater. The data of the following flumes are available in theinstrument:

l Palmer-Bowlus-Flumel Venturi flume, trapezoidal weir, rectangular weirl Rectangular weir, V-Notch

Setup

The configuration of the flow measurement loop requires PACTwarewith the suitable DTMs. The example refers to a flow measurementwith a radar sensor. The following setup steps must be carried out:

l Selection of the parameter "Flow"l Carrying out adjustmentl Select flume (linearization)l Set scalingl Parameter adjustment of pulse outputsl Parameter adjustment of the totalizer

Select in the DTM window "Parameter" the option "Flow" with therequested unit of measurement.

Min. adjustment: Enter the suitable value for 0 %, i.e. the distancefrom the sensor to the medium as long as there is no flow. These are inthe following example 1.40 m.

Max. adjustment: Enter the suitable value for 100 %, i.e. the distancefrom the sensor to the medium, with the max. flow volume. This is inthe following example 0.80 m.


Flume

Parameter - Flow

Adjustment



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100% 0,80m (d)= 400m3/h=

0% 1,40m (d)= 0m3/h=

Fig. 13: Adjustmentflow measurement with V-notch

Select in the DTM window "Linearization" the option "Flow" and thenthe used flume (in the above example V-notch).

Select in the DTM window "Scaling" under "Parameter" the option"Flow". Finally the allocation of a value must be carried out, i.e. the flowvolume is assigned to the 0 and 100 % value. As the last step, selectthe requested meas. unit. For above example: 0 % = 0 and 100 % =400, meas. unit m/h.

First of all decide if you want to use a relay and/or a current output. Inthe DTM window "Outputs" you can use any of the three outputs aslong as these are not yet used for other tasks.

Finally select under "Mode" (relay) or "Output characteristics" (currentoutput) the option "Flow volume pulse" or "Sampling pulse". Enterunder "Pulse output all" the flow volume after which a pulse should beoutputted (e.g. 400 m corresponds to one pulse per hour with a flowvolume of 400 m/h).

In mode "Sampling pulse" an additional pulse is outputted after adefined time. This means that a timer is started after each pulse afterwhich another pulse is outputted. This applies only if already a pulsewas outputted after exceeding the flow volume.

Due to sludge at the bottom of the flume, it can happen that the min.adjustment originally carried out can no longer be reached. Thereforesmall quantities will continuously enter the flow volume detectiondespite the "empty" flume. The option "Min. flow volume suppression"offers the possibility to suppress measured flow volumes below acertain percentage value for the flow volume detection.

If a flow measurement is set up, the flow value can also be summed upand displayed as flow volume. The graph can be selected in the menuitem "Display". The following parameters must be adjusted for thetotalizer:

l Measuring unit: Selection of the unit by which the totalizer adds.l Indicating format: Selection of the indicating format (number of

decimal positions of the counter)

Linearisation curve

Scaling

Outputs

Totalizer



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Information:

The totalizer can be reset in the menu "Additional settings" - "Reset"



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9.1 Maintenance

If the instrument is used properly, no special maintenance is requiredin normal operation.

9.2 Rectify malfunctions

The operator of the system is responsible for taking suitable measuresto remove interferences.

A maximum of reliability is ensured. Nevertheless, faults can occurduring operation. These may be caused by the following, e.g.:

l Measured value from sensor not correctl Voltage supplyl Interference on the cables

The first measures to be taken are to check the input and output signalas well as to evaluate the error messages via the display. Theprocedure is described below. Further comprehensive diagnostics canbe carried out on a PC with PACTware and the suitable DTM. In manycases, the causes can be determined in this way and faults rectified.

However, should these measures not be successful, call the VEGAservice hotline in urgent cases under the phone no. +49 1805 858550.

The hotline is available to you 7 days a week round-the-clock. Sincewe offer this service world-wide, the support is only available in theEnglish language. The service is free of charge, only the standardtelephone costs will be charged.

The signal conditioning instrument and the connected sensors arepermanently monitored during operation and the values entered duringparameter adjustment are checked for plausibility. If irregularitiesoccur or in case of incorrect parameter adjustment, a fault signal istriggered. In case of an instrument defect or line break/shortcircuit, afault signal is also triggered.

The fault indication lights in case of failure and the current output aswell as the relays react according to the configured fault mode. If relay6 was configured as fail safe relay, it will deenergize. In addition, one ofthe following error messages is outputted on the display.

? E003l CRC error (error with self-check)

Carry out a reset

Reaction when malfunc-

tions occur

Causes of malfunction

Fault rectification

24 hour service hotline

Failure message



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Send instrument for repair

? E007

l Sensor type not compatible

Search for sensor again and allocate under "Meas. loop -Input"

? E014

l Sensor current > 21 mA or short-circuit

Check sensor, e.g. on failure

Remove short-circuit

? E015

l Sensor in boot phase

l Sensor current < 3.6 mA or line break

Check sensor, e.g. on failure

Remove line break

Check connection of the sensor

? E016

l Empty/full adjustment reversed

Carry out a fresh adjustment

? E017

l Adjustment span too small

Carry out a fresh adjustment and increase the distancebetween min. and max. adjustment

? E021

l Scaling span too small

Carry out a fresh scaling, increase the distance between min.and max. scaling.

? E034

l EEPROM defective

Carry out a reset


? E035

l EEPROM CRCerror

Carry out a reset




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? E036

l Instrument software not executable (during software update orafter failed update)

Wait until software update is finished

Carry out another software update

? E062

l Pulse priority too small

Increase under "Output" the entry "Pulse output all" so thatmax. one pulse per second is outputted.

? E110

l Relay switching points too close together

Increase the difference between the two relay switching points

? E111

l Relay switching points interchanged

Change relay switching points for "On/Off"

? E115

l Several relays are assignef to the pump control which are notset to the same failure mode

All relays which are assigned to the pump control must be setto the same failure mode

? E116

l Several relays are assigned to the pump control which are notconfigured to the same mode

All relays which are assigned to the pump control must be setto the same mode

?E

117l A monitored pump signals failure

Check the faulty pump. For acknowledgement, carry out thereset "Failure relay 1 4" or switch the instrument OFF andON again

Depending on the failure reason and measures taken, the stepsdescribed in chapter "Set up" must be carried out again, if necessary.

9.3 I

nstrument repairIf a repair is necessary, please proceed as follows:

Reaction after fault rec-

tification



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You can download a return form (23 KB) from our Internet homepagewww.vega.com under: "Downloads - Forms and certificates - Repairform".

By doing this you help us carry out the repair quickly and without

having to call back for needed information.

l Print and fill out one form per instrumentl Clean the instrument and pack it damage-proofl Attach the completed form and, if need be, also a safety data

sheet outside on the packagingl Please ask the agency serving you for the address of your return

shipment. You can find the respective agency on our websitewww.vega.com under: "Company - VEGA worldwide"



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10 Dismounting

10.1 Dismounting steps

Take note of chapters "Mounting" and "Connecting to power supply"and carry out the listed steps in reverse order.

10.2 Disposal

The instrument consists of materials which can be recycled byspecialised recycling companies. We use recyclable materials andhave designed the electronics to be easily separable.

WEEE directive 2002/96/EG

This instrument is not subject to the WEEE directive 2002/96/EG andthe respective national laws. Pass the instrument directly on to aspecialised recycling company and do not use the municipal collectingpoints. These may be used only for privately used products accordingto the WEEE directive.

Correct disposal avoids negative effects to persons and environmentand ensures recycling of useful raw materials.

Materials: see chapter "Technical data"

If you have no way to dispose of the old instrument properly, pleasecontact us concerning return and disposal.


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11 Supplement

11.1 Technical data

General data

Series Installation device for mounting in front panel orhousing

Weight 620 g (1.367 lbs)

Housing materials Valox 357 XU

Connection terminals- Type of terminal Pluggable spring-loaded terminal with coding

- Max. wire cross-section 2.5 mm (AWG 14)

Voltage supplyOperating voltage 20 253 V AC, 50/60 Hz, 20 253 V DC

Max. power consumption 7 VA; 3 W

Sensor input

Number of sensors 1 x 4 20 mA

Type of input (selectable)- Active input Sensor power supply by VEGAMET 391

- Passive input Sensor has own power supply

Measured value transmission- 4 20 mA analogue for 4 20 mA sensors

Deviation of measured value (4 20 mA)- Accuracy 16 A (0.1 % from 4 20 mA)

Terminal voltage- Non-Ex version 28.5 22 V at 4 20 mA

- Ex version 19 14.5 V at 4 20 mA

Current limitation approx. 26 mA

Detection line break 3.6 mADetection shortcircuit 21 mA

Adjustment range 4 20 mA sensor- Empty adjustment 2.4 21.6 mA

- Full adjustment 2.4 21.6 mA

- min. adjustment delta 16 A

Connection cable to the sensor two-wire screened standard cable

Digital input

Quantity 4 x digital input

Type of input Passive


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Switching threshold- Low -3 5 V DC

- High 11 30 V DC

M

ax. input voltage 30V DC

Max. input current 30 mA

Max. sampling rate 10 Hz

Relay outputs

Quantity 6 x operating relay

Function Switching relay for level, fault signal or pulse relayfor flow/sampling pulse

Contact Floating spdt

Contact material AgSnO2, hard gold-platedTurn-on voltage min. 10 mV DC, max. 250 V AC/60 DC

Switching current min. 10 A DC, max. 3 A AC, 1 A DC

Breaking capacity min. 50 mW, max. 500 VA, max. 54 W DC (with Uless than 40 V)1)

Min. programmable switching hysteresis 0.1 %

Mode pulse output- Pulse length 350 ms

Current output

Quantity 1 x output

Function Current output for level or flow/sampling pulse

Range 0/4 20 mA, 20 0/4 mA

Resolution 1 A

Max. load 500

Fault signal (switch over) 0; < 3.6; 4; 20; 20.5; 22 mA

Accuracy

-Standard 16 A (0.1 % from 4 20 mA)

- with EMC interferences 80 A (0.5 % of 4 20 mA)

Temperature error relating to 20 mA 0.005 %/K

Mode pulse output- Voltage pulse 12 V DC at 20 mA with load 600

- Pulse length 200 ms

1) If inductive loads or stronger currents are switched through, the gold platingon the relay contact surface will be permanently damaged. The contact isthen no longer suitable for switching low-level signal circuits.


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USB interface2)

Quantity 1 x on front plate

Plug connection Mini-B (4-pole)

USB specification 2.0 (Fullspeed)Max. cable length 5 m (196 in)

Indications

Measured value indication- graphic-capable LC display (65 x 32 mm),

lighteddigital and quasianalogue indication

- Max. indicating range -99999 99999

LED displays

-Status operating voltage 1 x LED green

- Status fault signal 1 x LED red

- Status operating relay 1 6 6 x LED yellow

Operation

Adjustment elements 4 x keys for menu adjustment

PC adjustment PACTware with respective DTM

Ambient conditions

Ambient temperature- Instrument in general -20 +60 C (-4 +140 F)

- USB interface 0 +60 C (32 +140 F)

Storage and transport temperature -40 +80 C (-40 +176 F)

Electrical protective measures

Protection rating- Front IP 65

-Instrument IP 20

Overvoltage category II

Protection class II

Electrical separating measures

Reliable separation according to VDE 0106 part 1 between power supply, input and digital part- Reference voltage 250 V

- Isolation resistance 3.75 kV

Galvanic separation between relay output and digital part- Reference voltage 250 V

2) Limited temperature range, see ambient conditions


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- Isolation resistance 4 kV

Potential separation between Ethernet interface and digital part- Reference voltage 50 V

- Isolation resistance 1 kV

Potential separation between RS232 interface and digital part- Reference voltage 50 V

- Isolation resistance 50 V

Approvals

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".


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11.2 Overview applications/functionality

The following charts provide an overview of the standard applications and functions of signalconditioning instruments VEGAMET 391/624/625 and VEGASCAN 693. They also give informationabout whether the respective function can be activated and adjusted via the integrated indicating and

adjustment unit (OP) or via PACTware/DTM.

Application/Function 391 624 625 693 OP3) DTM

Level measurement

Process pressure measurement

Differential measurement - - -

Interface measurement - - -

Pressurized vessel - - - -

Pump control - 4)

Totalizer - - - -

Tendency recognition - -

Flow measurement - -

Simulation sensor value/%-value/lin-%-value

Simulation scaled values -

Live adjustment -

Measured value limitation (suppression of negative measuredvalues)

-

Selection linearisation curve (cylindrical tank, spherical tank)

Creation of individual linearisation curves -

Allocate fail safe relay -

Modify allocation of outputs -

Switch on/Switch off delay relay - -

Passive input with Ex version - - - - - -

Modify HART address of the connected sensors

Activate/deactivate measurement loop - - -

Instrument version with interface option

Application/Function 391 624 625 693 OP DTM

Adjust the time

Assign/modify IP-addr./Subnet mask/Gateway addr.

Assign/modify DNS server addr. -

Parameter adjustment of PC/DCS output -

Web-VV settings -

Device trend -

Configure transmission of measured values via e-mail -

Confi

gure transmission of measured values via SMS -

3) Operating Panel (integrated indicating and adjustment unit)4) only with VEGAMET 391


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11.3 Dimensions

73 mm(2.87")

86,5mm(

3.41")

96 mm (3.78")

111 mm (4.37")

135 mm (5.32")

140 mm (5.51")

100mm(

3.94")

92mmx

92mm

(3.62"x3.62)

119,5mm(

4.71")

96mm(

3.78")

OKESCon

1 2 3 4 5 6


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11.4 Industrial property rights

VEGA product lines are global protected by industrial property rights.

Further information see http://www.vega.com.

Only in U.S.A.: Further information see patent label at the sensorhousing.

VEGA Produktfamilien sind weltweit geschtzt durch gewerbliche

Schutzrechte.

Nhere Informationen unterhttp://www.vega.com.

Les lignes de produits VEGA sont globalement protges par des

droits de proprit intellectuelle.

Pour plus d'informations, on pourra se rfrer au site http://www.vega.com.

VEGA lineas de productos estn protegidas por los derechos en elcampo de la propiedad industrial.

Para mayor informacin revise la pagina web http://www.vega.com.

.

http://www.vega.com.

VEGA

11.5 Trademark

All brand names as well as trade and company names used areproperty of their lawful proprietor/originator.


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INDEX

A

Adjustment 19Application area 8Assistant 18

C

Cable- Grounding 12

- Potential equalisation 12

- Shielding 12

Carrier rail mounting 11Current output 23Cylindrical tank 21, 34

D

Damping 20Date of manufacture 25Device info 25Device-TAG 19Diagnostics 24Display- Background lighting 24

- Brightness 24

- Language adjustment 23

Displayed value 23Driver 32Dry run protection 22, 34DTM 8, 17, 22, 32-33- DTM Collection 32

- Full version 33

- Standard version 33

F

Factory setting 25Failure 23- Causes 44

- Fail safe relay 22

- Failure message 24, 44

- Removal 44

FDT 8Flow measurement 16, 22, 41Fluctuating product surface 20Flume 41Front panel mounting 10Functional principle 8

H

Hotline 44Hysteresis 35

I

Input- active 13

- Passive 13

Installation possibilities 10Integration time 20

L

Language adjustment 23Level measurement 34Lin. percent 23Linearisation 21Linearisation curve 21, 34

M

MAC address 25Main menu 18Meas. loop TAG 21Measured value indication 17Measured variable 19Multiviewer 33

O

Online help 25, 33Operation 32Overflow protection 22, 34

P

PACTware 8, 17, 22, 32Palmer-Bowlus-Flume 41Parameter adjustment 17PIN 25Potential equalisation 12Pump control 22, 35, 37

R

Rectangular flume 41Relay output 21- Fail safe relay 22, 44

Repair form 47Reset 25

S

Safety data sheet 47Scaling 21, 23, 34Screw mounting 11Sensor input- active 13


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- Passive 13

Serial number 7, 25Service hotline 44Setup assistant 18

Simulation 24Software update 33Spherical tank 21Switching window 22

T

Tank calculation 33Tendency 22Tendency recognition 39Trapezoidal weir 41Triangular weir 41

Type label 7

U

USB 32-33

V

V-Notch 41Venturi flume 41


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VEGA Grieshaber KG

Am Hohenstein 11377761 SchiltachGermanyPhone +49 7836 50-0Fax +49 7836 50-201E-mail: [email protected]

Printing date:

ISO 9001

All statements concerning scope of delivery, application,practical use and operating conditions of the sensors and

Documents

CPU Instruction Operation-En