Operating Instructions
VEGAFLEX 52K
Level and Pressure
Safety information / Note Ex area
Safety information
Please read this manual carefully, and also take
note of country-specific installation standards
(e.g. the VDE regulations in Germany) as well
as all prevailing safety regulations and accident prevention rules.
For safety and warranty reasons, any internal
work on the instruments, apart from that involved in normal installation and electrical connection, must be carried out only by qualified
VEGA personnel.
2 VEGAFLEX 52K
Note Ex area
Please note the approval documents (yellow
binder), and especially the included safety
data sheet.
Contents
Contents
Safety information ........................................................................ 2
Note Ex area ................................................................................ 2
1 Product description
1.1 Function ................................................................................. 4
1.2 Application features ............................................................. 4
1.3 Types and versions ............................................................. 5
1.4 Type code ............................................................................. 7
1.5 Technical data ....................................................................... 8
1.6 Dimensions ......................................................................... 11
2 Mounting
2.1 Installation instructions ...................................................... 12
3 Electrical connection .............................................................. 15
3.1 Connection and connection cable .................................... 15
3.2 Connection of the sensor .................................................. 17
3.3 Connection of the indicating instrument VEGADIS 50 .... 19
4 Setup
4.1 Adjustment methods .......................................................... 20
4.2 Adjustment with adjustment module MINICOM ............... 20
4.3 Adjustment with the PC ...................................................... 26
4.4 Adjustment with HART® handheld ..................................... 29
5 Diagnostics
5.1 Simulation ............................................................................ 30
5.2 Failure rectification ............................................................. 30
VEGAFLEX 52K 3
1 Product description
Product description
1.1 Function
High frequency microwave impulses are
guided along a steel rope.
The microwave impulses are reflected when
reaching the product surface. The impulse
running time is processed by the integrated
electronics and outputted as level.
The sensors detect levels in all types of solids. Density, conductivity and dielectric value
of the product do not influence the measurement. Also, varying product properties cannot influence the measured value.
Lime, cement, cereals, plastic granules, flour,
gravel - VEGAFLEX microwave sensors
solve the most difficult application problems
involving solids. Even in products with varying moisture or fluctuating dielectric constant,
the level is reliably detected. High, narrow
vessels in which a non-contact measuring
technique often delivers less than optimum
measuring results, can be measured without
problem by VEGAFLEX. VEGAFLEX 52 is
equipped with a cable of 8 mm diameter and
is available up to a length of 20 m.
• Adjustment without filling or emptying of the
vessel.
• 4 … 20 mA two-wire sensors, supply and
measuring signal via one two-wire cable
(loop powered).
• Up to 15 sensors can be connected via
one two-wire cable.
• Measuring range up to 20 m with small min.
distance.
• Unaffected by application conditions such
as:
- dust and noise generation
- moisture changes
- varying products
• Existing cable systems can be still used in
four-wire technology.
• Unaffected by the vessel material, e.g.
metal, concrete, plastic etc.
• As an option, the display with adjustment
can be separated from the sensor.
• Connection to all bus systems: Modbus,
Interbus S, Siemens 3964R, Profibus DP,
Profibus FMS, ASCII.
• Low wiring costs by using bus systems or
two-wire technology.
1.2 Application features
Applications
• Level measurement of solids.
• Measurement also in vacuum.
• All slightly conductive substance and all
substances with a dielectric value er > 1.8
can be measured.
• Measuring range 0 ... 20 m.
Two-wire technology
• Supply, signal transmission and output
signal on one two-wire cable.
• 4 … 20 mA output signal or digital output
signal.
Rugged
• Highly resistant materials: PA, 1.4401.
Precise and reliable
• Resolution 1 mm.
• Unaffected by noise, steam, dusts, gas
compositions and inert gas stratification.
• Unaffected by varying density.
• Measurements under pressure up to
16 bar and with product temperatures up
to 120°C.
Communicative
• Integrated display of measured values.
• As an option, display can be separated
from the sensor.
• Adjustment from the PLC level.
Approvals
• Ex Zone 0
- EExd ia IIC
- EEx ia IIC
• ATEX
• StEx Zone 10
4 VEGAFLEX 52K
Product description
Adjustment with PC
The setup and adjustment of the VEGAFLEX
sensors is generally made on the PC with the
adjustment program VEGA Visual Operating
(VVO) under Windows®. The program leads
quickly through adjustment and parameter
setting by means of pictures, graphics and
process visualisations.
The PC can be connected to any individual
position of the system or the signal cable.
This is done by connecting the two-wire PC
interface converter VEGACONNECT 2 to the
sensor or the signal cable.
The adjustment and parameter setting data
can be saved with the adjustment software
on the PC and can be protected by passwords. On request, the adjustments can be
quickly transferred to other sensors.
Adjustment with adjustment module
MINICOM
With the small (3.2 cm x 6.7 cm) 6 key adjustment module, the adjustment can be carried
out in clear text dialogue.
The adjustment module can be plugged into
VEGAFLEX or the external indicating instrument VEGADIS 50.
Adjustment of VEGAFLEX from the external
indicating instrument VEGADIS 50 is therefore possible.
Adjustment with HART® handheld
Series 50 with 4 … 20 mA output signal can
also be adjusted with the HART® handheld or
via a PC with HART® software (e.g. Smart
version). A special DDD (Data Device Description) is not necessary, so that the sensors can be adjusted with the HART
®
standard menus of the handheld.
HART Communicator
HART® handheld
1.3 Types and versions
VEGAFLEX series 50 K
In general, all VEGAFLEX series 50 K sensors can be adjusted with the pluggable
adjustment module MINICOM or with any
standard HART® handheld. With the software
VEGA Visual Operating (VVO), it is also possible to adjust the sensor with a PC.
Tank 1
m (d)
12.345
ESC
+
-
OK
4 … 20 mA sensors
Two-wire sensors fro connection to a power
supply unit or a PLC.
Compact sensors with mains supply
The sensors deliver a level-proportional
4 … 20 mA signal, which can be processed
in a PLC.
Detachable adjustment module MINICOM
VEGAFLEX 52K 5
Product description
Configuration
A measuring system with a VEGAFLEX can
be realised in different ways (see following
figure).
The external indicating instrument VEGADIS
50 can be separated up to 25 m from the
sensor.
Two-wire technology
1
4 ... 20 mA sensor, supply and measuring
signal via one two-wire cable (loop-powered), indicating instrument VEGADIS 11
only possible in four-wire technology.
2
Connection to a PLC (active).
3
Connection to an indicating instrument
VEGADIS 371 with up to 4 relay outputs.
VEGADIS 50
1
VEGAFLEX
4
2
2
Four-wire technology
In addition to a two-wire signal cable, these
measuring systems have a separate supply
cable.
E.g. this is necessary when using a passive
PLC, the inputs of which cannot power the
connected sensors.
This cable is shown in the drawing as a broken line.
1)
1)
4 … 20 mA
passive
2 2
VEGADIS 11
2
4 … 20 mA
PLC
+
-
Relay (4 x)
0/4 … 20 mA
1)
only with HART
3
®
2
4 … 20 mA
passive
+
separate power supply with
-
four-wire technology
VEGADIS 371 Ex
6 VEGAFLEX 52K
Product description
1.4 Type code
The second figure of the type name, e.g.
VEGAFLEX 5[1]… distinguishes the instruments according to the stability of the cable.
The letter, e.g. VEGAFLEX 52[K] characterises the output signal:
K stands for an analogue 4 … 20 mA output
signal (compact instrument)
V stands for a digital output signal (VBUS).
VEGAFLEX 52 K EXS.X X
B - 20…72 V DC, 20…250 V AC / 4 … 20 mA output, HART
D - Two-wire loop-powered / 4 … 20 mA output, HART
E - Supply via signal conditioning instrument / VBUS output
EXS - StEx Zone 10 approved
EX0 - Ex Zone 0 acc. to PTB and ATEX II 1/2 G
V - Digital output signal (two-wire technology)
K - Analogue 0 … 20 mA output signal (two or
four-wire technology)
Instrument series with 8 mm cable
®
®
Measuring technology (FLEX for guided microwave)
VEGAFLEX 52K 7
1.5 Technical data
Power supply
Supply voltage
- two-wire sensor 24 V DC (15 … 36 V DC)
- four-wire sensor 24 V DC (20 … 72 V)
Current consumption
- two-wire sensor max. 22.5 mA
- four-wire sensor max. 60 mA
Power consumption
- two-wire sensor max. 810 mW
- four-wire sensor max. 1.2 W
W
1000
680
500
250
HART® load
230 V AC (20 … 250 V), 50/60 Hz
fuse 0.315 A TR
Voltage limit
Ex sensor
Product description
Voltage limit
non Ex sensor
0
20 22 24 26 28 30 32 34 3615 16 18
V
Voltage supply
The min. supply voltage depends on the sensor current.
V
36
15
14
04 22
Range of the required
terminal voltage on the
sensor
Sensor current
mA
Measuring range
VEGAFLEX 52 0.3 ... 20 m
Output signal
4 … 20 mA current signal, load max. 500 W
8 VEGAFLEX 52K
Product description
Adjustment
- PC and adjustment software VEGA Visual Operating
- adjustment module MINICOM
- HART® handheld
Accuracy (under reference conditions acc. to IEC 770 - relating to the max. meas. range)
Linearity error < 0.1 %
Temperature drift 0.015 %/10 K
Resolution of the 4 … 20 mA signal 0.025 % of range (DA converter)
Resolution 1 mm
Characteristics
Min. span between
full and empty adjustment
- analogue output signal 10 mm
Ambient conditions
Vessel pressure -1 … 16 bar
Ambient temperature on the housing -40°C … +60°C
Process temperature -40°C … +120°C
Storage and transport temperature -40°C … +80°C
Protection IP 66/IP 67 (meets both protection standards)
Protection class
- two-wire sensor II
- four-wire sensor I
Overvoltage category III
Max. tensile load cable ø 8 mm: 40 KN (check the max. tensile
load of the silo ceiling)
Process fittings
VEGAFLEX 52 G 11/2 A, 11/2“ NPT
steel chromized or 1.4301 (stainless steel)
Ex technical data
StEx zone 10 (only two-wire sensors)
Ex-Zone 0 acc. to PTB and ATEX II 1/2 G
The permissible operating data of the VEGAFLEX sensors for Ex or StEx areas are listed in
the certificate.
Materials
Housing PBT (Valox) or
aluminium (powder-coated)
Cable 1.4401 (stainless steel; 316) or
galvanized steel - PA-coated
VEGAFLEX 52K 9
Product description
Connection cables
Two-wire sensor
- Supply and signal via one two-wire cable.
The cable resistance depends on the supply voltage (see diagram).
Four-wire sensor
- Supply and signal separately,
cable resistance of the 4 … 20 mA signal cable max. 500 W
Profibus PA sensor
- recommended cable types - SINEC 6XV1 830-5AH10 (Siemens AG)
- SINEC L2 6XV1 830-35H10 (Siemens AG)
- 3079 a (Belden)
- max. cable length 100 m field distributor to sensor
Conductor cross-section generally 2.5 mm
Ground connection max. 4 mm
2
2
Cable entry 2 x M20 x 1.5 (cable diameter 5 … 9 mm)
CE conformity
VEGAFLEX sensors meet the protective regulations of EMC (89/336/EWG) and NSR
(73/23/EWG). Conformity has been judged acc. to the following standards:
EMC Emission EN 50 081 - 1: 1992
Susceptibility EN 50 082 - 2: 1995
NSR EN 61 010 - 1: 1993
Display
Display scalable, analogue and digital display of
measured values (option).
An external display of measured value, powered by the sensor, can be mounted at a distance of up to 25 m from the sensor.
Signal output
Signal output
- two-wire technology 4 … 20 mA (see diagram)
- four-wire technology 4 … 20 mA
Resolution of the 20 mA signal 0.025 % of range
Load 0 … 500 W
Two-wire technology:
The analogue 4 … 20 mA output signal (measuring signal) is transmitted together with the
power supply via one two-wire cable.
Four-wire technology:
Separate power supply.
The analogue 4 … 20 mA output signal (measuring signal) is transmitted in a cable separated from the power supply.
10 VEGAFLEX 52K
Product description
1.6 Dimensions
Plastic housing
201
10˚
322
182
165
SW 55
G 1½ A
L
ø 8
Cable ø 8 mm uncoated 200 mm
Cable ø 8 mm coated 400 mm
L = Order length
Adjustment module MINICOM
Tank 1
m (d)
12.345
67,5
74
Cable loops
Cable -
1.4401
+
-
Cable - steel
plastic coated
ESC
OK
Adjustment module for insertion
32,5
into series 50
sensors or in the
external indicating instrument
VEGADIS 50
101
Aluminium housing
215
185
370
205
244
90
25
70
ø 4
L
155
8
ø 20
M20x1,5
25 116
SW 55
G 1½ A
ø 8
268
25
70
ø 4
L
155
8
ø 20
Aluminium housing with
Exd terminal compartment
215
185
370
205
Exd
terminal
compartment
25 116
268
SW 55
G 1½ A
L
25
70
ø 4
0%
0%
X
X
ø 8
155
8
ø 20
x = area cannot be measured
VEGAFLEX 52K 11
2 Mounting
Mounting
2.1 Installation instructions
Lateral load
Make sure that the cable is not subjected to
strong lateral forces. Mount VEGAFLEX at a
position where no interfering influences such
as by stirrers, filling inlets etc. can occur.
Lateral load
Extraction forces
In case of strong extraction forces, e.g. due
to quick emptying or material sliding, high
tensile loads can be caused. Should such a
mounting position be necessary, the cable
should not be fixed, but provided instead
with a gravity weight so that the cable can
more easily follow the product movements.
Make sure that the cable does not touch the
vessel wall.
Shortening of the measuring cable
The cable can be shortened any time later.
Loosen the three headless screws (hexagon)
on the gravity weight and remove them. Pull
the cable out of the gravity weight.
To prevent the steel cable from unraveling
after cutting, you should tin-plate the cable at
the cutting position with a soldering iron or
flame or strongly bind the cable with a wire.
Shorten the cable by the requested length
with a hacksaw or a cutting-off wheel.
In case of insulated cables with gravity
weight, the insulation should be removed
over a length of 45 mm.
L
Shortening of the measuring cable
Pressure
In case of gauge or low pressure in the vessel, the mounting boss must be sealed on the
thread. Use the supplied seal ring. Make
sure that the seal ring is resistant against the
medium.
Cable entries
When mounting outdoors, on cooled vessels
or in humid areas where cleaning is done,
e.g. with steam or high pressure, the seal of
the electrical cable entry is very important.
Use electrical cable with a round cross-section and tighten the cable entry firmly. The
cable entry is suitable for cable diameters of
5 mm to 9 mm.
12 VEGAFLEX 52K
Mounting
Moisture from outside
To avoid moisture ingress, the connection
cable to the housing should be looped downward (directly in front of the cable entry), so
that rain and condensation water can drain
off. This is mainly valid for outdoor mounting,
in areas where moisture is expected (e.g. by
cleaning processes) or on cooled or heated
vessels.
Moisture
Cable electrode in solids
Buildup
Generally, buildup on the cable causes distortion of the measured value. If strong
buildup on the cable is expected, the use of
insulated cable is recommended. The higher
surface quality reduces buildup.
Measuring range
Keep in mind that the cable cannot be used
for measurement all the way to its uppermost
point of connection. A measurement over the
length of the gravity weight or the cable loop
is also not possible.
Straining
Generally, the measuring result is only slightly
influenced when the gravity weight is in contact with the vessel wall.
Depending on the kind of solid, the installation or the method of filling, the cable can
"float“ despite the gravity weight. The solid
can push the cable to the vessel wall or to the
top, and incorrect measured values are re-
0,3 m
100%
sult. In this case, fasten the cable securely.
When straining the cable, strong cable forces
should be avoided. In our price list you will
0%
find a spring (accessory) that helps prevent
overloading of the cable.
VEGAFLEX 52K 13
L
Measuring range
Mounting
Abrasion
In very abrasive products, e.g. the measurement of grit, a measuring cable without insulation should be used. Keep the useful life of
the cable in mind.
Sockets
Avoid long mounting sockets. Mount the
sensor flush and use short sockets with small
diameters.
d
6
d d
d
6
Material cone
Keep in mind when installing VEGAFLEX on
the vessel, that material cones can form in
solids, causing distortion of the measured
value. We recommend choosing a mounting
location where the cable detects an average
value of the material cone. This location is not
obligatory, but it will increase the accuracy of
the measurement.
VEGAFLEX should be installed with respect
to the position of the filling and emptying
apertures of the vessel. To compensate for
measurement errors caused by centered
filling of the material cone, the cable should
be installed at a distance of d/6 from the vessel wall or vessel installation. In any case,
keep a min. distance of 300 mm.
3
6
d
d
1 Emptying
2 Filling inlet
3 VEGAFLEX
14 VEGAFLEX 52K
1
2
Electrical connection
3 Electrical connection
3.1 Connection and connection ca-
ble
Safety information
As a rule, do all work in the complete absence of line voltage. Always switch off the
power supply before you carry out connecting work on the sensors. Protect yourself
and the instrument, especially when you use
sensors which do not work with low voltage.
Qualified personnel
Instruments which are not operated with a
protective low voltage must only be connected by qualified personnel.
Connection
For connection, a standard two or four-wire
cable (sensors with separate supply) with
max. 2.5 mm2 can be used. Very often the
"Electromagnetic pollution“ from electronic
actuators, energy lines and transmitting
stations is so considerable that the two or
four-wire cable should be shielded.
We recommend the use of screened cable.
Shielding is also a good preventative measure against future soures of interference.
Ground the shielding only on the sensor end
(fig. 3.1 a). It is advantageous to ground the
shielding on both ends. However, you must
make sure that no earth equalisation currents
flow through the cable shielding (fig. 3.1 b).
Earth equalisation currents (when grounding
at both ends) can be prevented by connecting the cable shielding on one end (e.g. in
the switching cabinet) via a capacitor (e.g.
0.1 µF; 250 V AC) to the earth potential. Use
a very low-resistance earth connection (foundation, plate or mains earth). In StEx applications, the shielding should be grounded only
at the one end. Potential transfer can be
caused when grounding at both ends.
Ex protection
If an instrument is used in dust-Ex areas,
respective regulations as well as the dust-Ex
certificate of VEGAFLEX for systems in dustEx areas should be noted.
Connection cable
Make sure that the connection cables are
specified for the expected operating temperatures in your systems.
The cable must have an outer diameter of
5 … 9 mm (1/5 ... 1/3 inch). Otherwise the seal
effect of the cable entry will not be ensured.
Cables for intrinsically safe circuits must be
marked blue and must not be used for other
circuits. Note the special wiring regulations
for Profibus PA sensors (P), see "1.5 Technical data“.
Earth conductor terminal
On VEGAFLEX sensors, the earth conductor
terminal is galvanically connected with the
metal thread.
VEGAFLEX 52K 15
Electrical connection
Grounding at one sensor end
Processing
Fig. 3.1 a
Grounding at both ends (on the signal conditioning instrument via the potential separating capacitor)
³ 0.1 µF
250 V AC
Processing
In StEx applications the shielding must only
Fig. 3.1 b
be made on one side. Due to the potential
difference, grounding at both sides is not
allowed.
16 VEGAFLEX 52K
Electrical connection
3.2 Connection of the sensor
• Loosen the closing screw on the upper
side of the sensor.
• Open the sensor cover.
• Remove the sleeve nut of the PG and shift
the nut slightly over the connection cable.
• Remove the rubber seal from the PG and
shift the seal over the connection cable.
• Remove the outer insulation of the connec-
tion cable over a length of approx. 10 cm.
• Insert the cable through the PG into the
sensor.
4 … 20 mA
1)
passive
To the indicating instrument in the
+
-
sensor cover or to the external indicating instrument VEGADIS 50
M20 x 1.5
(diameter of the
connection cable
5 … 9 mm)
• Connect the cables. Push the white tabs of
the spring terminals with a small screwdriver and insert the copper core of the
connection cable into the terminal opening.
Check the hold of the individual wires in the
terminals by pulling lightly on them.
• Screw the sleeve nut back onto the PG and
screw it down tightly.
4 … 20 mA
active
+
-
M20 x 1.5
(diameter of
the connection cable
6 … 9 mm)
Power supply
+
-
To the indicating
instrument in the
sensor cover or to
the external
indicating instrument VEGADIS 50
M20 x 1.5
1
-+
5678
Display
ESC
OK
2.23272
+ 1
4-20mA
2 -
Communication
Two-wire technology (analogue)
(loop powered)
1)
4 … 20 mA passive means that the sensor
Sockets for connection of VEGACONNECT 2
(communication
sockets)
Four-wire technology
(separate supply)
(+) L1
2
N
Communication
-+
8765
4-+3
2.23274
Display4-20mA
ESC
OK
consumes a level dependent current of
4 … 20 mA (consumer).
VEGAFLEX 52K 17
Electrical connection
Exd version (loop-powered with pressure-tight encapsulated terminal compartment)
EEx d terminal compartment
(opening in Ex area not allowed)
4 … 20 mA passive
1)
-+
Locking of the cover
Exd terminal box
Supply: 20...36V DC/4...20mA HART
Shield
-
+
2
1
2
1
1
/2“ NPT EEx d
(diameter of the
connection cable
3.5 … 8.7 mm)
Adjustment module and indication terminal compartment
(opening in Ex area allowed)
1
/2“ NPT EEx d
(diameter of the
connection cable to
the Exd terminal box
3.5 … 8.7 mm)
Exd safe lead through to
the Exd terminal box
1
+-2
4-20mA
Communication
-+
ESC
Display
OK
8765
2.23272
1)
4 … 20 mA passive means that the sensor
consumes a level dependent current of
4 … 20 mA (consumer).
18 VEGAFLEX 52K
Electrical connection
3.3 Connection of the indicating instrument VEGADIS 50
Loosen the 4 screws of the housing cover on
VEGADIS 50. The connection procedure can
be facilitated by fastening the housing cover
during connection on the housing by means
of the screws.
Adjustment
module
OUTPUT
(to the sensor)
SENSOR
DISPLAY
(in the cover of the
indicating instrument)
DISPLAY1234 5678
Tank 1
m (d)
12.345
+
-
VEGADIS 50
ESC
OK
Screws
Power supply
+
-
4 … 20 mA
active
4 … 20 mA
passive
+
-
to VEGADIS 50
(use shielded cable. See fig. 3.1 a or
fig. 3.1 b)
M20x1.5
M20x1.5
1
2
(+) L1
Communication
N
-+
Four-wire sensor
(separate supply)
2 -
8765
4-+3
2.23274
Display4-20mA
ESC
OK
+ 1
4-20mA
Two-wire sensor
(loop powered)
Communication
-+
5678
Display
ESC
OK
2.23272
VEGAFLEX 52K 19
4 Setup
-
+
ESC
OK
2
4
Tank 1
m (d)
12.345
-
+
ESC
OK
Tank 1
m (d)
12.345
4 ... 20 mA
Setup
4.1 Adjustment methods
Series 50 sensors can be adjusted with
- PC (adjustment program VVO)
- with detachable adjustment module
MINICOM
- with HART® handheld.
It is only possible to use one adjustment
device at a time.
Adjustment module MINICOM
With the adjustment module MINICOM you
adjust in the sensor or in the external indicating instrument VEGADIS 50. With a dialogue
text display and 6 keys, the module offers
the same adjustment functionality as the
adjustment software VVO.
Adjustment program VVO
With the adjustment program VVO (VEGA
Visual Operating System) on the PC the
sensors can be adjusted in a very userfriendly way. The PC communicates via the
interface converter VEGACONNECT 2 with
the sensor. A digital adjustment signal is
superimposed on the signal and supply
cables. The PC can be connected at any
location along the cable or directly to the
sensor.
4.2 Adjustment with adjustment module MINICOM
As with the PC, you can also adjust the sensor with the small, detachable adjustment
module MINICOM. The adjustment module is
plugged into the sensor or into the external
indicating instrument (optional).
For the adjustment with adjustment module,
all adjustment options as with the PC and the
adjustment program VVO are available. You
carry out all adjustment steps with the 6 keys
of the adjustment module. A small display
shows you, apart from the measured value, a
short message on the menu item or an entered numerical value.
HART® handheld
VEGAFLEX 50 K sensors, like other HART
®
protocol compatible instruments, can be
adjusted with the HART® handheld. A manufacturer specific DDD (Data-Device-Description) is not required. The sensors
communicate with the HART® standard
menus, through which all sensor functions
are accessible. Functions that are rarely
used, such as, for example the scaling of the
A/D converter for the signal output or the
adjustment with medium, are not possible or
are blocked with the HART® handheld. These
functions must be carried out with the PC or
the adjustment module MINICOM.
20 VEGAFLEX 52K
Setup
Adjustment elements
The adjustment module MINICOM is menuorientated. The clear text indications on the
display lead through the menu. The functions
of the keys are described in the following.
2
1
Tank 1
-
m (d)
12.345
5
"OK“ key (4)
With the "OK“ key you can confirm the adjustment.
When the symbol ▼ or is shown in the digital
indication, you can change to a lower menu
level with the "OK“ key.
On the symbol there is no branching point
below the menu item, but only a further menu
item of the respective function.
▼
▼
"ESC“ key (3)
With the "ESC“ key (Escape) you can interrupt an adjustment or a current function or
change to the next higher menu level (depending on the function).
To reach e.g. the uppermost menu level,
push the "ESC“ key several times.
"+“ and "–“ key (2)
With the "+“ and "–“ keys you can modify the
values of the parameters and choose from a
number of possibilities.
After first pushing, the value to be adjusted
flashes. With any further pushing, the value is
modified.
3
ESC
+
OK
4
▼
▼
Arrow keys (5)
With the keys "–>“ and "<–“ you can move
within the menu level from one menu item to
the next.
Digital indication (1)
During operation, the digital display shows
the actual measured value.
When adjusting the instrument, the clear text
display shows the respective function.
▼ Branching point, from where you can
move to the next lower menu.
▼
This symbol informs you about a following
▼
safety inquiry.
Adjustment steps
On the following pages, you will see the menu
schematic of the adjustment module MINICOM.
Set up the sensor in the following sequence.
The numbers correspond to the sequence of
the setup. You will find the numbers with the
respective menu points in the menu schematic on the following pages.
1. Adjustment
2. Conditioning
3. Outputs
4. Operating range
5. Measuring conditions
6. Indication of the useful signal and noise
level
VEGAFLEX 52K 21
Setup
1. Adjustment
Under the menu item "
the sensor of the measuring range with which
it should work.
Max.
Min.
You can carry out the adjustment with or
without medium. Generally, you will carry out
the adjustment without medium, as you can
adjust without vessel filling.
Adjustment without medium
• Enter the distance of your sensor to the
medium at 0 % (example: 5.850 m) with the
"+“ and "–“ key.
If you do not know the distance, you have
to do a sounding.
• Enter the distance to the medium your
sensor has at 100 % filling.
Adjustment
100 % (distance to the product
0.300 m) corresponds to
1200 liters, e.g. 20 mA
0 % (distance to the product
5.850 m) corresponds to
456 liters, e.g. 4 mA)
“ you inform
Meas. range
Key Display indication
Sensor
m(d)
4.700
Para-
OK
OK
OK
OK
1)
In case of two values which can be modified, you
meter
adjustment
Adjustment
w.o.
medium
Adjustment
in
(min. adjustment)
m(d)
0.0 %
at
m (d)
XX.XXX
1)
can move with the "+“ key to the second value
(confirm with the "OK“ key).
Adjustment with medium
Fill the vessel e.g. to 10 %, enter in the menu
"
Min-adjustment
“ with the "+“ and "–“ keys
10 % and confirm with the "OK“ key. Then fill
the vessel e.g. to 80 % or 100 %, enter in the
menu "
Max-adjustment
“ with the "+“ and "–“
keys 80 % or 100 % and confirm with the
"OK“ key.
with
medium
Max.
Min.
adjust
adjust
at %
at %
XXX.X
XXX.X
22 VEGAFLEX 52K
Setup
2. Conditioning
Under the menu item "
choose the distance at 0 % and at 100 %
filling. Then you enter the the physical quantity and the unit, as well as the decimal point.
• Enter in the menu window "
sponds
“ the value of the 0 % filling. This will
e.g. "80“ for 80 liters.
• Confirm with "OK“.
• With the arrow key you change to the
100 % menu. Enter here the value of your
parameter corresponding to a 100 % filling.
E.g. "1200“ for 1200 liters.
• Confirm with "OK“.
• If necessary, choose a decimal point. Note
that max. 4 digits can be shown.
• In the menu "
parameter, i.e. physical quantity (mass,
volume, distance…),
• In the menu "
unit (kg, l, ft3, gal, m3 …).
• With the "ESC“ key you go back to the next
higher menu level. With the arrow key you
choose the next menu item.
• In the menu
between three standard linearisation
curves.
Preadjusted is a linear correlation between
the percentage value of the product distance and the percentage value of the
filling volume.
You can choose between linear, spherical
tank and cylindrical tank. Entering a userprogrammable curve is only possible with
the PC and the adjustment program VVO.
• In the menu item
set a delay period for the signal output.
Conditioning
0 % corre-
prop. to
“ you choose the
Unit
“ you choose the physical
"Lin. curve“
you can choose
"Integration time“,
“, you
you can
3. Outputs
Under the menu "
e.g. if the current output should be inverted,
or which parameter should be indicated on
the sensor display.
Outputs
“, you determine
4. Operating range
Without special adjustment, the operating
range corresponds to the measuring range.
The measuring range was already adjusted
with the Min./Max. adjustment. It is generally
suitable to choose a slightly wider span for
operating range (approx. 5 %) than for the
measuring range (span).
Example:
Min./Max. adjustment: 0.300 … 5.850 m; Set
operating range to approx. 0.250 … real
cable length.
When shortening the cable, the cable length
has to be redefined.
5. Meas. conditions
With these functions you can enter the ambient conditions in the vessel
(see menu item)
6. Useful signal and noise level
In the menu
tion on the signal quality of the product echo.
The higher the "
the measurement.
Ampl.: Means amplitude of the product echo
S-N: Means Signal-Noise (useful signal
The higher the S-N value (useful level minus
noise level), the better the reliability:
> 50 dB Measurement very good
40 … 50 dB Measurement good
20 … 40 dB Measurement satisfactory
15 … 20 dB Measurement sufficient
< 15 dB Measurement bad
"Info“
you get important informa-
S-N
“ value, the more reliable
in dB (noise level)
level minus noise level)
VEGAFLEX 52K 23
Menu plan of the adjustment module MINICOM
Setup
Sensor
m(d)
4.700
Parameteradjustment
Sensor
optimize
Sensor
Tag
Sensor
Meas.
enviro
nment
Operating
range
Begin
m (d)
FLEX51
K
0.50
0.50
When switching on, the sensor type and the
software version are displayed for a few seconds.
4.
Cable
length
m (d)
6.00
Meas.
condit
ions
Condit
ion
Solid
5.
fast
change
No
agitat
ed sur
face
No
Low DK
value
No
Empty
vessel
pro
file
Create
new
Meas.
dist.
m (d)
X.XX
Create
new
Now!
OK ?
Learning!
Update
Meas.
dist.
m (d)
X.XX
Update
Now!
OK ?
Learning!
Delete
Delete
Now!
OK ?
Deleting!
Adjust
ment
w.out
medium
Adjust
ment
in
m(d)
1.
with
medium
Min.
adjust
at %
XXX.X
0.0 %
at
m (d)
XX.XXX
Max.
adjust
at %
XXX.X
100.0%
at
m (d)
XX.XXX
Note:
Set-up the sensor in the sequence of the
numbers.
Signal
condit
ioning
Scaling
0 %
corres
ponds
XXXX
2.
Lin.
curve
Linear
100 %
corres
ponds
XXXX
Integr
ation
time
Decimal
point
888.8
0 s
prop.
Unit
to
Mass
kg
24 VEGAFLEX 52K
Setup
Add'l
functions
With these keys you move in
the menu field to the left, the
right, top and bottom
ESC
OK
Outputs
mAoutput
act.
dist.
m (d)
4.700
Ampl.:
XXdB
S-N:
XX
Info
Reset
to de
dB
fault
Reset
Now!
OK ?
Reset
runs!
Language
English
Meas.
unit
m (d)
6.
Sensor
Tag
Sensor
Sensor
type
FLEX51
K
Serial
number
1094
0213
Softw.
Vers.
1.00
Softw.
date
15.09.
1997
dist.
m (d)
4.700
S-N:
XXdB
XX
dB
Ampl.:
act.
3.
Simulation
Sensor
displ.
Simulation
Now!
OK ?
Simulation
XXX.X
%
act.
dist.
m
X,XX
fast
change
Yes
Bolt print figures are sensor or
measured value information and
cannot be modified in this position.
The menu points in white letters
stand for figures which can be
modified with the or key and
saved with the key.
OK
mAoutput
4-20mA
prop.
to
Distance
Fail
ure
mode
22mA
VEGAFLEX 52K 25
Setup
4.3 Adjustment with the PC
Connection
The PC with the adjustment program VVO
(VEGA Visual Operating from version 2.50)
can be connected to the
- sensor
- signal cable.
PC on the sensor
For connection of the PC to the sensor, the
interface converter VEGACONNECT 2 is
required, which has to be plugged into the
provided CONNECT socket in the sensor.
PC on the signal cable
Connect the two-wire cable of
VEGACONNECT 2 to the signal cable (fourwire sensor) or the supply cable (two-wire
sensor) of the sensor. If the resistance of the
systems (PLC, current source etc.) connected to the signal/supply cable is less than
250 W, a resistor of 250 … 350 W must be
connected to the signal/supply cable during
adjustment. The digital signals modulated to
the signal cable would be considerably
damped (short circuited) through insufficient
resistance, and communication with the PC
would not be ensured.
+
250 ... 350
VEGACONNECT 2
-
You have connected the PC with the adjustment software VVO to your measuring system.
• Now switch on the power supply of the
connected sensor.
In the first 10 … 15 seconds the sensor start to
draw a current of approx. 22 mA (selftest) and
takes then a level proportional or distanceproportional current of 4 … 20 mA.
• Start the adjustment software VVO on your
PC.
• In the entrance window you choose with
the arrow keys or the mouse the item
ning“
and click to
You should choose
"OK“
.
"Planning“,
"Plan-
only if you
are authorised to modify instrument parameters. Otherwise choose
"Maintenance“
In the window
.
"User identification“
"Operator“
you are
or
asked for the name and the password.
• For setup (
name:
"VEGA“
planning
"VEGA“
) you enter under
and under password also:
. It does not matter if the adjustment
is made in small or capital letters.
VVO determines then automatically the type
of the connected sensor and indicates a
moment later with which sensor the connection exists.
If you get no communication with the sensor,
check the following:
- The supply voltage must be at least 20 V
(four-wire sensor). Two-wire sensor: 15 V
at 4 mA or 14 V at 22 mA.
- In case VEGACONNECT 2 is directly connected to the sensor cable, the load resistance must be 250 … 350 Ohm.
- You have to use a VEGACONNECT 2.
Older versions of VEGACONNECT are not
compatible.
Further information on the adjustment with the
PC and the adjustment software VVO you will
find in the operating instructions of the adjustment software VEGA Visual Operating
(VVO).
26 VEGAFLEX 52K
Setup
Special functions
If a VEGAFLEX sensor is determined, several
special functions of VEGAFLEX can be chosen with the adjustment software VVO.
Under the menu item "Instrument data/Parameter adjustment“ you can choose the
sensor optimisation.
Here you find all special functions of VEGAFLEX:
- Meas. environment
- Echo curve
Meas. environment
Meas. conditions
In this menu you choose if you want to measure solids or liquids.
When you want to measure a product with a
DK value below 2, you can modify here the
sensitivity of the sensor.
Echo curve
The echo curve shows all reflections of the
guided microwave signal.
This means that not only the level signal is
shown, but also interference signals, e.g.
caused by vessel installations. The sensor
generally interpretes the highest amplitude
as the level echo.
A black arrow is shown above the highest
amplitude peak. When clicking to "Display
info“, a small window will be displayed, listing
the detailed values of the selected echo.
Operating range
With this command you can limit the operating range of the sensor or redefine the cable
length after shortening of the cable.
Carry out an adjustment before modifying the
operating range, as a later adjustment will
overwrite the values of the operating range.
The right part of the graphics shows the
operating range, the left part the adjustment.
If e.g. you do not want to fill your vessel completely, you can limit the operating range.
VEGAFLEX 52K 27
Zoom/Unzoom
After activation of one of these two functions,
you can either zoom or unzoom the curve
with the left mouse key.
When activating "Zoom“, you can choose the
requested part of the picture by pushing the
left mouse key and drawing a frame.
Setup
The following curves can be displayed:
Raw value curve (rot)
The red curve represents the absolute signal, detected by the receiver of VEGAFLEX.
This curve receives beside the useful echo,
also interference signals. The highest amplitude is interpreted as the level echo. Check
by sounding if the value of the useful echo
corresponds to the real distance to the level.
If the two values do not correspond, you
have to filter out the dominant false echoes
with the function "Empty vessel profile“.
Vessel profile (blue)
In normal condition, this curve represents the
beginning and end of the vessel.
To filter out false echoes, you can modify the
blue curve of the vessel profile with the function "Empty vessel profile“.
Reference line (green)
All amplitudes of the red curve which are
below the green reference line will be suppressed (ringing, noise, false echoes etc.).
All amplitudes above this line are possible
echoes which are processed by the software.
Logarithmic raw value curve (black)
The curve represents the difference between
raw value curve (red) and reference line
(green). The scale on the right (dB) is valid
for this curve.
Documentation
When clicking the button "Documentation“,
the immediate echo curve will be saved.
Echo data
When clicking the button "Echo data“, a window is displayed where all echoes detected
by the sensor are listed with dB information
and a probability processing.
Start
When clicking "Start“, the echo curve is updated continuously. With "Stop“ you can terminate the update.
Empty vessel profile
With the functions in this window you can filter
out false echoes. The blue empty vessel
profile curve in the echo curve window represents the actual empty vessel profile.
Determine the level by sounding. It is possible to filter out the echo, if the sensor has
interpreted a false echo as the probable level
echo instead of the sounded level. Choose
the function "Create new“. Enter the sounded
distance to the medium. All false echoes
within the range of the adjusted distance are
gated out automatically. Please note that also
the blue curve of the empty vessel profile
changes.
With "Update“ you can extend the empty
vessel profile, in case new false echoes occur with falling level.
If you want to delete the existing empty vessel profile, you have to click to "Delete“.
28 VEGAFLEX 52K
Setup
4.4 Adjustment with HART® handheld
The VEGAFLEX can be set up with any
HART® handheld. A special DDD (Data Device Description) is not necessary. Just
connect the HART® handheld to the signal
cable, after having connected the sensor to
power supply.
Note
If the resistance of the signal current circuit is
less than 200 W, a resistor of 250 … 350 W
must be connected to the signal/connection
cable during adjustment. Just connect the
resistor to the sensor connection cable (see
figure).
+
250 ... 350
The most important adjustment steps
You will find the complete adjustment via
HART® protocol in the operating instructions
of the HART® handheld.
For parameter adjustment, first press "
TER.
“.
Generic: SENSOR
PV LRV
5.850 m
0.300 m
HELP DEL ABORT ENTER
The adjustment will be saved in the handheld,
but not in the sensor itself.
Press "
SEND
“ to transmit the adjustment to
the sensor.
EN-
-
PLC
Generic: SENSOR
1 LRV 5.850 m
2 PV URV 0.300 m
HELP SEND HOME
Press "OK“, to confirm the following warning.
Follow the instruction on the display.
Press again "OK“, and the adjustment that
was just carried out is displayed.
Generic: SENSOR
1 LRV 5.850 m
2 PV URV 0.300 m
HELP HOME
VEGAFLEX 52K 29
Diagnostics
5 Diagnostics
5.1 Simulation
For simulation of a certain filling, you can call up the function “Simulation” on the adjustment
module MINICOM, in the software program VVO or in the HART® handheld.
You simulate a certain current value. Please keep in mind that connected instruments, such as
e.g. a PLC, react according to their adjustments and will probably activate alarms or system
functions.
5.2 Failure rectification
Error Corrective measure
E 013 Sensor does not find a - Message is displayed during the warm-up
E 017 Adjustment span too small Carry out the adjustment again. Make sure that
E 036 Software update incorrect Return the instrument for repair.
E 040 Hardware failure/ Check all connection cables.
level echo phase.
- If the message remains, the DK value of the
medium can be too low.
Check the useful and noise level.
See "4.2 Adjustment with adjustment module
MINICOM; 6. Useful and noise level“.
If the message still remains, carry out a new
adjustment.
the difference between min. and max. adjustment is at least 10 mm.
Electronics defective Contact our service department.
30 VEGAFLEX 52K
Notes
VEGAFLEX 52K 31
VEGA Grieshaber KG
Am Hohenstein 113
D-77761 Schiltach
Phone (0 78 36) 50 - 0
Fax (0 78 36) 50 - 201
e-mail info@vega-g.de
ISO 9001
The statements on types, application, use and operating conditions of
the sensors and processing systems correspond to the latest information at the time of printing.
Technical data subject to alterations
2.24 291 / Febr. 2000
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