Vega VEGAVIB 61 User manual

Operating Instructions
Vibrating level switch for granulated bulk
solids
VEGAVIB 61
Two-wire 8/16 mA
Document ID: 29268

2
Contents
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
Contents
1 About this document
1.1 Function ........................................................................................................................... 4
1.2 Target group ..................................................................................................................... 4
1.3 Symbols used................................................................................................................... 4
2 For your safety
2.1 Authorised personnel ....................................................................................................... 5
2.2 Appropriate use................................................................................................................ 5
2.3 Warning about incorrect use............................................................................................. 5
2.4 General safety instructions............................................................................................... 5
2.5 Safety label on the instrument .......................................................................................... 6
2.6 EU conformity................................................................................................................... 6
2.7 SIL conformity .................................................................................................................. 6
2.8 Safety instructions for Ex areas ........................................................................................ 6
2.9 Environmental instructions ............................................................................................... 6
3 Product description
3.1 Conguration.................................................................................................................... 7
3.2 Principle of operation........................................................................................................ 7
3.3 Adjustment ....................................................................................................................... 8
3.4 Storage and transport....................................................................................................... 8
4 Mounting
4.1 General instructions ....................................................................................................... 10
4.2 Mounting instructions ..................................................................................................... 11
5 Connecting to power supply
5.1 Preparing the connection ............................................................................................... 15
5.2 Connection procedure.................................................................................................... 15
5.3 Wiring plan, single chamber housing.............................................................................. 16
5.4 Wiring plan - version IP 66/IP 68, 1 bar........................................................................... 18
6 Setup
6.1 General information........................................................................................................ 19
6.2 Adjustment elements...................................................................................................... 19
6.3 Function table................................................................................................................. 20
6.4 Proof test (SIL) ............................................................................................................... 22
7 Maintenanceandfaultrectication
7.1 Maintenance .................................................................................................................. 26
7.2 Rectify faults................................................................................................................... 26
7.3 Exchanging the electronics module................................................................................ 27
7.4 How to proceed if a repair is necessary.......................................................................... 28
8 Dismount
8.1 Dismounting steps.......................................................................................................... 29
8.2 Disposal ......................................................................................................................... 29
9 Supplement
9.1 Technical data ................................................................................................................ 30
9.2 Dimensions .................................................................................................................... 34
9.3 Industrial property rights................................................................................................. 37
9.4 Trademark ...................................................................................................................... 37

3
Contents
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
Safety instructions for Ex areas
TakenoteoftheExspecicsafetyinstructionsforExapplications.
These instructions are attached as documents to each instrument
with Ex approval and are part of the operating instructions manual.
Editing status: 2017-03-06

4
1 About this document
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
1 About this document
1.1 Function
This operating instructions manual provides all the information you
need for mounting, connection and setup as well as important instruc-
tionsformaintenanceandfaultrectication.Pleasereadthisinforma-
tion before putting the instrument into operation and keep this manual
accessible in the immediate vicinity of the device.
1.2 Target group
This operating instructions manual is directed to trained specialist
personnel.The contents of this manual should be made available to
these personnel and put into practice by them.
1.3 Symbols used
Information, tip, note
This symbol indicates helpful additional information.
Caution: If this warning is ignored, faults or malfunctions can result.
Warning: If this warning is ignored, injury to persons and/or serious
damage to the instrument can result.
Danger: If this warning is ignored, serious injury to persons and/or
destruction of the instrument can result.
Ex applications
This symbol indicates special instructions for Ex applications.
SIL applications
This symbol indicates instructions for functional safety which must be
taken into account particularly for safety-relevant applications.
• List
The dot set in front indicates a list with no implied sequence.
→ Action
This arrow indicates a single action.
1 Sequence of actions
Numbers set in front indicate successive steps in a procedure.
Battery disposal
This symbol indicates special information about the disposal of bat-
teries and accumulators.

5
2 For your safety
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
2 For your safety
2.1 Authorised personnel
All operations described in this operating instructions manual must
be carried out only by trained specialist personnel authorised by the
plant operator.
During work on and with the device the required personal protective
equipment must always be worn.
2.2 Appropriate use
The VEGAVIB 61 is a sensor for point level detection.
Youcannddetailedinformationabouttheareaofapplicationin
chapter "Product description".
Operational reliability is ensured only if the instrument is properly
usedaccordingtothespecicationsintheoperatinginstructions
manual as well as possible supplementary instructions.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
2.3 Warning about incorrect use
Inappropriate or incorrect use of the instrument can give rise to
application-specichazards,e.g.vesseloverllordamagetosystem
components through incorrect mounting or adjustment.
2.4 General safety instructions
This is a state-of-the-art instrument complying with all prevailing
regulations and guidelines. The instrument must only be operated in a
technicallyawlessandreliablecondition.Theoperatorisresponsible
for the trouble-free operation of the instrument.
During the entire duration of use, the user is obliged to determine the
compliance of the necessary occupational safety measures with the
current valid rules and regulations and also take note of new regula-
tions.
The safety instructions in this operating instructions manual, the na-
tional installation standards as well as the valid safety regulations and
accident prevention rules must be observed by the user.
For safety and warranty reasons, any invasive work on the device
beyond that described in the operating instructions manual may be
carried out only by personnel authorised by the manufacturer. Arbi-
traryconversionsormodicationsareexplicitlyforbidden.
The safety approval markings and safety tips on the device must also
be observed.

6
2 For your safety
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
2.5 Safety label on the instrument
The safety approval markings and safety tips on the device must be
observed.
2.6 EU conformity
ThedevicefullsthelegalrequirementsoftheapplicableEUguide-
lines.ByaxingtheCEmarking,weconrmsuccessfultestingofthe
product.
YoucanndtheEUconformitydeclarationonourwebsiteunder
www.vega.com/downloads.
2.7 SIL conformity
VEGAVIB 61 meets the requirements of functional safety according
to IEC 61508. Further information is available in the Safety Manual
"VEGAVIB series 60".
2.8 Safety instructions for Ex areas
PleasenotetheEx-specicsafetyinformationforinstallationandop-
eration in Ex areas. These safety instructions are part of the operating
instructions manual and come with the Ex-approved instruments.
2.9 Environmental instructions
Protection of the environment is one of our most important duties.
That is why we have introduced an environment management system
with the goal of continuously improving company environmental pro-
tection.Theenvironmentmanagementsystemiscertiedaccording
to DIN EN ISO 14001.
Pleasehelpusfullthisobligationbyobservingtheenvironmental
instructions in this manual:
• Chapter "Packaging, transport and storage"
• Chapter "Disposal"

7
3 Product description
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
3 Product description
3.1 Conguration
The scope of delivery encompasses:
• VEGAVIB 61 point level switch
• Documentation
– This operating instructions manual
– Safety Manual "Functional safety (SIL)" (optional)
– Supplementary instructions manual "Plug connector for level
sensors" (optional)
– Ex-specic"Safety instructions" (with Ex versions)
– Ifnecessary,furthercerticates
The VEGAVIB 61 consists of the components:
• Housing lid
• Housing with electronics
• Processttingwithvibratingrod
1
2
3
Fig. 1: VEGAVIB 61 with plastic housing
1 Housing lid
2 Housing with electronics
3 Processtting
Thetypelabelcontainsthemostimportantdataforidenticationand
use of the instrument:
• Article number
• Serial number
• Technical data
• Article numbers, documentation
• SILidentication(withSILratingexworks)
With the serial number, you can access the delivery data of the instru-
ment via "www.vega.com", "VEGA Tools" and "Instrument search".
Youcanndtheserialnumberontheinsideoftheinstrumentaswell
as on the type label on the outside.
3.2 Principle of operation
VEGAVIB 61 is a point level sensor with vibrating rod for level detec-
tion.
It is designed for industrial use in all areas of process technology and
is preferably used for bulk solids.
Scope of delivery
Constituent parts
Type label
Application area

8
3 Product description
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
Typicalapplicationsareoverllanddryrunprotection.Thankstoits
simple and robust measuring system, VEGAVIB 61 is virtually unaf-
fected by the chemical and physical properties of the bulk solid.
It also works when subjected to strong external vibrations or changing
products.
Solid detection in water
If VEGAVIB 61 was ordered for solid detection in water, the vibrating
rod is calibrated to the density of water. If covered by water (density:
1 g/cm³/0.036 lbs/in) VEGAVIB 61 signals "uncovered". Only if the
vibrating element is also covered with solids (e.g. sand, sludge, gravel
etc.) will the sensor signal "covered".
Function monitoring
The electronics module of VEGAVIB 61 continuously monitors the
following criteria:
• Correct vibrating frequency
• Linebreaktothepiezodrive
If one of these faults is detected, the electronics signals this via a
denedcurrenttothesignalconditioninginstrument.Theconnection
cable to the vibrating element is also monitored.
Thevibratingrodispiezoelectricallyenergisedandvibratesatits
mechanicalresonancefrequencyofapprox.360Hz.Whenthevibrat-
ing rod is submerged in the product, the vibration amplitude changes.
This change is detected by the integrated electronics module and
converted into a switching command.
Depending on your requirements, VEGAVIB 61 with two-wire elec-
tronicscanbeconnectedtodierentsignalconditioninginstruments.
Compatible signal conditioning instruments are listed in chapter
"Technical data".
Thedataforpowersupplyarespeciedinchapter"Technical data".
3.3 Adjustment
With the factory setting, products with a density of > 0.03 g/cm³
(0.0011 lbs/in³) can be measured. It is possible to adapt the instru-
ment for products with lower density > 0.02 g/cm³ (0.0007 lbs/in³).
Ontheelectronicsmoduleyouwillndthefollowingdisplayand
adjustment elements:
• Signal lamp for indication of the switching condition (green/red)
• Potentiometer for adaptation to the product density
• Mode changeover for selection of the output current
3.4 Storage and transport
Your instrument was protected by packaging during transport. Its
capacity to handle normal loads during transport is assured by a test
based on ISO 4180.
Functional principle
Voltage supply
Packaging

9
3 Product description
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
The packaging of standard instruments consists of environment-
friendly, recyclable carton material.The sensing element is additional-
ly protected with a cardboard cover. For special versions, PE foam or
PE foil is also used. Please dispose of the packaging material through
specialised recycling companies.
Transport must be carried out in due consideration of the notes on the
transport packaging. Nonobservance of these instructions can cause
damage to the device.
The delivery must be checked for completeness and possible transit
damage immediately at receipt. Ascertained transit damage or con-
cealed defects must be appropriately dealt with.
Up to the time of installation, the packages must be left closed and
stored according to the orientation and storage markings on the
outside.
Unless otherwise indicated, the packages must be stored only under
the following conditions:
• Not in the open
• Dry and dust free
• Not exposed to corrosive media
• Protected against solar radiation
• Avoiding mechanical shock and vibration
• Storage and transport temperature see chapter "Supplement -
Technical data - Ambient conditions"
• Relative humidity 20 … 85 %
Transport
Transport inspection
Storage
Storage and transport
temperature

10
4 Mounting
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
4 Mounting
4.1 General instructions
Make sure that all parts of the instrument coming in direct contact
with the process, especially the sensor element, process seal and
processtting,aresuitablefortheexistingprocessconditions,such
as process pressure, process temperature as well as the chemical
properties of the medium.
Youcanndthespecicationsinchapter"Technical data" and on the
nameplate.
In general, VEGAVIB 61 can be installed in any position.The instru-
ment only has to be mounted in such a way that the vibrating element
is at the height of the desired switching point.
Use the recommended cables (see chapter "Connecting to power
supply") and tighten the cable gland.
You can give your instrument additional protection against moisture
penetration by leading the connection cable downward in front of the
cableentry.Rainandcondensationwatercanthusdraino.Thisap-
plies mainly to outdoor mounting as well as installation in areas where
high humidity is expected (e.g. through cleaning processes) or on
cooled or heated vessels.
Fig. 2: Measures against moisture ingress
Do not hold VEGAVIB 61 on the vibrating element. Especially with
angeandtubeversions,thesensorcanbedamagedbytheweight
of the instrument.
Remove the protective cover just before mounting
Theprocessttingmustbesealedifthereisgaugeorlowpressurein
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
Themax.permissiblepressureisspeciedinchapter"Technical
data" or on the type label of the sensor.
The vibrating level switch is a measuring instrument and must be
treated accordingly. Bending the vibrating element will destroy the
instrument.
Suitability for the process
conditions
Switching point
Moisture
T
ransport
Pressure/Vacuum
Handling

11
4 Mounting
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
Use the hexagon above the thread for screwing in.
Metric threads
In the case of instrument housings with metric thread, the cable
glands are screwed in at the factory. They are sealed with plastic
plugs as transport protection.
You have to remove these plugs before electrical connection.
NPT thread
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory.The
free openings for the cable glands are therefore covered with red dust
protection caps as transport protection.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
4.2 Mounting instructions
The vibrating element should protrude into the vessel to avoid
buildup.Forthatreason,avoidusingmountingbossesforanges
andscrewedttings.Thisappliesparticularlytousewithadhesive
products.
Mount the instrument in such a way that the vibrating rod does not
protrudedirectlyintothellingstream.
20°
a. b.
Fig. 3: Horizontal installation
a Protective sheet
b Concave protective sheet for abrasive solids
If such an installation location should be necessary, mount a suitable
protective sheet above or in front of the vibrating element, see illustra-
tion "a").
Cable entries - NPT
thread
Cable glands
Mounting socket
Filling opening

12
4 Mounting
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
In abrasive solids, mounting according to illustration "b" has proven.
A spout forms in the concave protective sheet preventing wear of the
protective sheet.
In silos for bulk solids, material cones can form and change the
switching point. Please keep this in mind when installing the sensor
in the vessel.We recommend selecting an installation location where
the vibrating rod detects an average value of the material cone.
The vibrating rod must be mounted in a way that takes the arrange-
mentofthellingandemptyingaperturesintoaccount.
To compensate measurement errors caused by the material cone in
cylindrical vessels, the sensor must be mounted at a distance of d/6
from the vessel wall.
dd
d
6
d
6
Fig. 4: Filling and emptying centred
Material cone

13
4 Mounting
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
d
d
6
1
2
3
Fig. 5: Filling in the centre, emptying laterally
1 VEGAVIB 61
2 Discharge opening
3 Filling opening
To achieve a very precise switching point, you can install VEGAVIB 61
horizontally.However,iftheswitchingpointcanhaveatoleranceofa
few centimeters, we recommend mounting VEGAVIB 61 approx. 20°
inclined to the vessel bottom to avoid buildup.
Horizontal mounting

14
4 Mounting
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
20°
Fig. 6: Horizontal mounting
IfVEGAVIB61ismountedinthellingstream,unwantedfalsemeas-
urement signals can be generated. For this reason, mount VEGAVIB
61atapositioninthevesselwherenodisturbances,e.g.fromlling
openings, agitators, etc., can occur.
In applications such as grit chambers or settling basins for coarse
sediments, the vibrating element must be protected against damage
withasuitablebae.
Thisbaemustbemanufacturedbyyou.
> 125 mm
(> 5")
> 120 mm
(> 4.7")
Fig.7:Baeforprotectionagainstmechanicaldamage
Inowingmedium
Baeprotectionagainst
falling rocks

15
5 Connecting to power supply
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
5 Connecting to power supply
5.1 Preparing the connection
Always keep in mind the following safety instructions:
Warning:
Connect only in the complete absence of line voltage.
• The electrical connection must only be carried out by trained
personnel authorised by the plant operator.
• Alwaysswitchopowersupply,beforeconnectingordisconnect-
ing the instrument.
Inhazardousareasyoumusttakenoteoftherespectiveregulations,
conformityandtypeapprovalcerticatesofthesensorsandpower
supply units.
Connect the voltage supply according to the following diagrams.Take
note of the general installation regulations. As a rule, connect VE-
GAVIB 61 to vessel ground (PA), or in case of plastic vessels, to the
next ground potential. On the side of the instrument housing there is
a ground terminal between the cable entries.This connection serves
todrainoelectrostaticcharges.InExapplications,theinstallation
regulationsforhazardousareasmustbegivenpriority.
Thedataforpowersupplyarespeciedinchapter"Technical data".
The instrument is connected with standard two-wire cable without
screen. If electromagnetic interference is expected which is above the
test values of EN 61326 for industrial areas, screened cable should
be used.
Use cable with round cross-section. A cable outer diameter of
5…9mm(0.2…0.35in)ensuresthesealeectofthecablegland.
Ifyouareusingcablewithadierentdiameterorcross-section,
exchange the seal or use a suitable cable gland.
Inhazardousareas,useonlyapprovedcableconnectionsforVE-
GAVIB 61.
Take note of the corresponding installation regulations for Ex applica-
tions.
Cover all housing openings conforming to standard according to
EN 60079-1.
5.2 Connection procedure
With Ex instruments, the housing cover may only be opened if there is
no explosive atmosphere present.
Proceed as follows:
1. Unscrew the housing lid
2. Loosen compression nut of the cable gland and remove blind
plug
Note safety instructions
Take note of safety
instructions for Ex
applications
Voltage supply
Connection cable
Connection cable
for Ex applications

16
5 Connecting to power supply
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
3. Remove approx. 10 cm (4 in) of the cable mantle, strip approx.
1 cm (0.4 in) of insulation from the ends of the individual wires
4. Insert the cable into the sensor through the cable entry
5. Lift the opening levers of the terminals with a screwdriver (see
following illustration)
Fig. 8: Connection steps 5 and 6
6. Insert the wire ends into the open terminals according to the wir-
ing plan
7. Press down the opening levers of the terminals, you will hear the
terminal spring closing
8. Check the hold of the wires in the terminals by lightly pulling on
them
9. Tighten the compression nut of the cable entry gland. The seal
ring must completely encircle the cable
10. If necessary, carry out a fresh adjustment
11. Screw the housing lid back on
Theelectricalconnectionisnished.
5.3 Wiring plan, single chamber housing
The following illustrations apply to the non-Ex as well as to the Ex-d
version.

17
5 Connecting to power supply
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
5
5
55
1 2
4
3
Fig. 9: Material versions, single chamber housing
1 Plastic (not with Ex d)
2 Aluminium
3 Stainless steel (not with Ex d)
4 Stainless steel, electropolished (not with Ex d)
5 Filter element for pressure compensation or blind plug with version IP 66/
IP 68, 1 bar (not with Ex d)
For connection to a VEGATOR (Ex) signal conditioning instrument.
The sensor is powered by the connected VEGATOR signal condition-
ing instrument. Further information is available in chapter "Techni-
cal data", "Ex-technical data" are available in the supplied "Safety
information manual".
The wiring example is applicable for all suitable signal conditioning
instruments.
If the mode switch of VEGAVIB 61 is correctly set to "max.", the con-
trol lamp on VEGAVIB 61 lights.
• red - with submerged vibrating element
• green - with uncovered vibrating element
Take note of the operating instructions manual of the signal condition-
ing instrument. Suitable signal conditioning instruments are listed in
chapter "Technical data".
Housing overview
Wiring plan

18
5 Connecting to power supply
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
1
Fig. 10: Wiring plan
1 Voltage supply
5.4 Wiring plan - version IP 66/IP 68, 1 bar
1
2
Fig. 11: Wire assignment, connection cable
1 Brown (+) and blue (-) to power supply or to the processing system
2 Shielding
Wire assignment, con-
nection cable

19
6 Setup
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
6 Setup
6.1 General information
Theguresinbracketsrefertothefollowingillustrations.
Ontheelectronicsmoduleyouwillndthefollowingdisplayand
adjustment elements:
• Potentiometer for adjustment of the density range (1)
• DIL switch for mode adjustment - min./max. (2)
• Signal lamp (5)
Note:
As a rule, always set the mode before starting to set up VEGAVIB 61 .
If used on a VEGATOR signal conditioning instrument, always set the
mode switch (2) on VEGAVIB 61 to max. mode.
The mode is selected on the signal conditioning instrument with the
mode switch.
The switching output will change if you set one of the two mode
switches afterwards.This could possibly trigger other connected
instruments or devices.
6.2 Adjustment elements
3
4
1
2
5
Fig. 12: Electronics and connection compartment - two-wire output
1 Potentiometer for adjustment of the density range
2 DIL switch for mode adjustment
3 Ground terminal
4 Connection terminals
5 Control lamp
With the potentiometer you can adapt the switching point to the solid.
Itisalreadypresetandmustonlybemodiedinspecialcases.
Function/Conguration
Electronics and terminal
compartment
Adjustment of the density
range (1)

20
6 Setup
VEGAVIB 61 • Two-wire 8/16 mA
29268-EN-170315
As a default setting, the potentiometer of VEGAVIB 61 is set to the
complete right position (> 0.3 g/cm³/0.0011 lbs/in³). In very light
solids you have to turn the potentiometer to the complete left posi-
tion (0.02 … 0.1 g/cm³ or 0.0007 … 0.0036 lbs/in³). By doing this,
VEGAVIB 61 will be more sensitive and light solids can be detected
more reliably.
For instruments detecting solids in water, these settings are not ap-
plicable.The density range is preset and must not be changed.
With the mode adjustment (min./max.) you can determine the output
current.
When using a VEGATOR signal conditioning instrument, always set
the mode switch to max. mode.
In this case you select the requested mode according to the "Function
table"(max.-max.detectionoroverllprotection,min.-min.detection
or dry run detection) on the VEGATOR signal conditioning instrument.
When used on a control system, the following values apply:
• Mode min.
– Vibrating element uncovered - 16 mA ±1 mA
– Vibrating element covered - 8 mA ±1 mA
• Mode max.
– Vibrating element uncovered - 8 mA ±1 mA
– Vibrating element covered - 16 mA ±1 mA
Control lamp for indication of the switching status
• green = 8 mA
• red = 16 mA
• red(ashing)=Failure(<2.3mA)
6.3 Function table
Level switch VEGAVIB 61
The following table provides an overview of the switching conditions
depending on the set mode and the level.
Mode on the sensor Level Signal current - Sensor Signal lamp - sensor
Max.
Overowprotection
8 mA
Green
Max.
Overowprotection
approx. 16 mA
Red
Mode adjustment (2)
Signal lamp (5)