Vega VEGACAP 27 User manual

Operating Instructions
VEGACAP 27
-double relay (DPDT)
Capacitive

Contents
1About this document
1.1Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2Target group . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3Symbolism used . . . . . . . . . . . . . . . . . . . . . . . 5
2For your safety
2.1Authorised personnel . . . . . . . . . . . . . . . . . . . . 6
2.2Appropriate use. . . . . . . . . . . . . . . . . . . . . . . . 6
2.3Warning about misuse . . . . . . . . . . . . . . . . . . . 6
2.4General safety instructions . . . . . . . . . . . . . . . . 6
2.5Safety approval markings and safety tips . . . . . 7
2.6CE conformity . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.7Safety instructions for Ex areas . . . . . . . . . . . . 7
2.8Environmental instructions . . . . . . . . . . . . . . . . 7
3Product description
3.1Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2Principle of operation. . . . . . . . . . . . . . . . . . . . 9
3.3Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4Storage and transport . . . . . . . . . . . . . . . . . . . 11
4Mounting
4.1General instructions. . . . . . . . . . . . . . . . . . . . . 12
4.2Mounting instructions. . . . . . . . . . . . . . . . . . . . 13
5Connecting to power supply
5.1Preparing the connection . . . . . . . . . . . . . . . . . 15
5.2Wiring plan,single chamber housing. . . . . . . . . 15
6Set up
6.1General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2Adjustment elements . . . . . . . . . . . . . . . . . . . . 17
6.3Functional chart. . . . . . . . . . . . . . . . . . . . . . . . 20
7Maintenance and fault rectification
7.1Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.2Remove interferences . . . . . . . . . . . . . . . . . . . 22
7.3Exchange of the electronics module . . . . . . . . . 25
7.4Instrument repair . . . . . . . . . . . . . . . . . . . . . . . 26
8Dismounting
8.1Dismounting steps . . . . . . . . . . . . . . . . . . . . . . 27
8.2Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2VEGACAP 27 - - double relay (DPDT)
Contents
33758-EN-070809

9Supplement
9.1Technical data. . . . . . . . . . . . . . . . . . . . . . . . . 28
9.2Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.3Industrial property rights. . . . . . . . . . . . . . . . . . 34
9.4Trademark . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Supplementary documentation
Information:
Supplementary documents appropriate to the ordered version
come with the delivery.You can find them listed in chapter
"Product description".
Instructions manuals for accessories and replacement
parts
Tip:
To ensure reliable setup and operation of your VEGACAP 27,
we offer accessories and replacement parts.The associated
documents are:
lOperating instructions manual "Oscillator CAP E31R"
VEGACAP 27 - - double relay (DPDT)3
Contents
33758-EN-070809

1About this document
1.1Function
This operating instructions manual provides all the information
you need for mounting,connection and setup as well as
important instructions for maintenance and fault rectification.
Please read this information before putting the instrument into
operation and keep this manual accessible in the immediate
vicinity of the device.
1.2Target group
This operating instructions manual is directed to trained
personnel.The contents of this manual should be made
available to these personnel and put into practice by them.
1.3Symbolism used
Information,tip,note
This symbol indicates helpful additional information.
Caution:If this warning is ignored,faults or malfunc-
tions 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.
lList
The dot set in front indicates a list with no implied sequence.
àAction
This arrow indicates a single action.
1Sequence
Numbers set in front indicate successive steps in a procedure.
4VEGACAP 27 - - double relay (DPDT)
About this document
33758-EN-070809

2For your safety
2.1Authorised personnel
All operations described in this operating instructions manual
must be carried out only by trained specialist personnel
authorised by the operator.
During work on and with the device the required personal
protection equipment must always be worn.
2.2Appropriate use
VEGACAP 27 is a sensor for level detection.
You can find detailed information on the application range in
chapter "Product description".
Operational reliability is ensured only if the instrument is
properly used according to the specifications in the operating
instructions manual as well as possible supplementary
instructions.
Due to 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.Arbitrary conversions or modifications are
explicitly forbidden.
2.3Warning about misuse
Inappropriate or incorrect use of the instrument can give rise to
application-specific hazards,e.g.vessel overfill or damage to
system components through incorrect mounting or adjustment.
2.4General safety instructions
This is a high-tech instrument requiring the strict observance of
standard 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 safety regulations and accident prevention rules.
The instrument must only be operated in a technically flawless
and reliable condition.The operator is responsible for trouble-
free operation of the instrument.
VEGACAP 27 - - double relay (DPDT)5
For your safety
33758-EN-070809

During the entire duration of use,the user is obliged to
determine the compliance of the required occupational safety
measures with the current valid rules and regulations and also
take note of new regulations.
2.5Safety approval markings and safety tips
The safety approval markings and safety tips on the device
must be observed.
2.6CE conformity
VEGACAP 27 is in CE conformity with EMC (89/336/EWG)
and LVD (73/23/EWG).
Conformity has been judged according to the following
standards:
lEMC:
-Emission EN 50081-1:1992
-Suceptibility EN 50082-2:1995
lLVD:EN 61010-1:1993
2.7Safety instructions for Ex areas
Please note the Ex-specific safety information for installation
and operation in Ex areas.These safety instructions are part of
the operating instructions manual and come with the Ex-
approved instruments.
2.8Environmental 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 protection.The environment man-
agement system is certified according to DIN EN ISO 14001.
Please help us fulfil this obligation by observing the environ-
mental instructions in this manual:
lChapter "Packaging,transport and storage"
lChapter "Disposal"
6VEGACAP 27 - - double relay (DPDT)
For your safety
33758-EN-070809

3Product description
3.1Configuration
The scope of delivery encompasses:
lVEGACAP 27 level sensor
lDocumentation
-this operating instructions manual
-if necessary,further documents
VEGACAP 27 consists of the following components:
lHousing cover
lHousing with electronics
lProcess fitting with electrode
1
2
3
4
5
Fig.1:VEGACAP 27 -with plastic housing
1Housing cover
2Housing with electronics
3Process fitting
4active screen segment
5active probe
The type label contains the most important data for identi-
fication and use of the instrument:
lArticle number
lSerial number
lTechnical data
lArticle numbers,documentation
Scope of delivery
Components
Type label
VEGACAP 27 - - double relay (DPDT)7
Product description
33758-EN-070809

With the serial number,it is possible to show the delivery data
of the instrument via "www.vega.com","VEGA Tools"and
"serial number search".In addition to the type label outside on
the instrument,the serial number is also available inside the
instrument.
3.2Principle of operation
VEGACAP 27 is a level switch with fully insulated,capacitive
electrode with screen segment and active tip for level
detection.
VEGACAP 27 is very rugged and maintenance-free and can
be used in all areas of industrial process technology.
Typical applications are overfill and dry run protection.
Setup of the instrument is very easy because an adjustment is
not necessary.This means that changing products with
different dielectric values,such as e.g.water and oil or
conductive and non-conductive products,do not influence the
settings on the instrument and their switching accuracy.
Fully insulated probes with screen segment like VEGACAP 27
are preferably used in conductive,very adhesive liquids.
Due to the mechanical construction with screen segment and
the active tip,buildup on the probe is compensated.
The capacitive measuring principle places no special require-
ments on installation.Hence,many different applications can
be equipped with VEGACAP 27.
The instrument can also be used problem-free in corrosive
products.
Probe,measured product and vessel wall form an electrical
capacitor.The capacitance is influenced by three main factors.
Area of application
Functional principle
8VEGACAP 27 - - double relay (DPDT)
Product description
33758-EN-070809

1
2
3
Fig.2:Functional principle -Plate capacitor
1Distance between the electrode surfaces
2Size of the electrode surfaces
3Type of dielectric between the electrodes
The probe and the vessel wall are the capacitor plates.The
measured product is the dielectric.Due to the higher dielectric
constant (DK value)of the product compared to air,the
capacitance increases as the probe is gradually covered.
The capacitance change is converted by the oscillator into a
switching command.
VEGACAP 27 is a compact instrument,i.e.it can be operated
without external evaluation system.The integrated electronics
evaluates the level signal and outputs a switching signal.With
this switching signal,a connected device can be operated
directly (e.g.a warning system,aPLC,a pump etc.).
You can find data on voltage supply in chapter "Technical
data"in the "Supplement".
3.3Operation
The probe can be adapted to the dielectric value of the product
directly on the electronics module.
Aswitching command can be triggered when the probe is
covered or laid bare.
On the electronics module you will find the following indicating
and adjustment elements:
lControl lamp for indication of the switching condition
lPotentiometer for switching point adaptation (covered)
lDIL switch for mode adjustment
Supply
VEGACAP 27 - - double relay (DPDT)9
Product description
33758-EN-070809

3.4Storage and transport
Your instrument was protected by packaging during transport.
Its capacity to handle normal loads during transport is assured
by a test according to DIN EN 24180.
The packaging of standard instruments consists of environ-
ment-friendly,recyclable cardboard.For special versions,PE
foam or PE foil is also used.Dispose of the packaging material
via specialised recycling companies.
Transport must be carried out under consideration of the notes
on the transport packaging.Nonobservance of these instruc-
tions can cause damage to the device.
The delivery must be checked for completeness and possible
transit damage immediately at receipt.Ascertained transit
damage or concealed 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:
lNot in the open
lDry and dust free
lNot exposed to corrosive media
lProtected against solar radiation
lAvoiding mechanical shock and vibration
lStorage and transport temperature see "Supplement -
Technical data -Ambient conditions"
lRelative humidity 20 …85 %
Packaging
Transport
Transport inspection
Storage
Storage and transport tem-
perature
10 VEGACAP 27 - - double relay (DPDT)
Product description
33758-EN-070809