VEGA FLEX52P User Manual

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Operating Instructions

PROF I

BUS

PROCESS FIELD BUS

VEGAFLEX 51P and 52P (Profibus PA)

Level and Pressure

Contents

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 51P and 52P

Note Ex area

Please note the approval documents (yellow binder), and especially the included safety data sheet.

Contents

Safety information ........................................................................ 2

Note Ex area ................................................................................ 2

1 Product description

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

1.2 Application features ............................................................. 5

1.3 Adjustment media ................................................................ 5

1.4 Profibus output signal .......................................................... 6

1.5 Type code ........................................................................... 10

1.6 Bus configuration ............................................................... 11

1.7 Technical data ..................................................................... 14

1.8 Approvals ........................................................................... 17

1.9 Data format of the output signal ........................................ 17

1.10 Dimensions ......................................................................... 18

2 Mounting

2.1 Installation instructions ...................................................... 20

3 Electrical connection

3.1 Connection – Connection cable – Screening ................... 23

3.2 Sensor address ................................................................. 27

3.3 Connection of the sensor .................................................. 29

3.4 Connection of the external indicating instrument ............ 30

4 Setup

4.1 Adjustment media .............................................................. 31

4.2 Adjustment with the adjustment module MINICOM ........ 32

4.3 Adjustment with the PC ...................................................... 38

5 Diagnostics

5.1 Simulation ............................................................................ 43

5.2 Function diagram ............................................................... 43

5.3 Error rectification ................................................................ 48

5.4 PA parameters .................................................................... 49

VEGAFLEX 51P and 52P 3

1 Product description

Product description

1.1 Function

High frequency microwave impulses are guided along a steel rope. When reaching the product surface, the microwave impulses are reflected. The running time of the impulses is processed by the integrated electronics and outputted as level.

The sensors measure the levels of all kinds of solids. Density, conductivity, dust generation and dielectric constant of the product do not influence the measurement. Also, the changing features of a solid do not influence the measured value.

Lime, cement, cereals, plastic granules, flour, gravel - VEGAFLEX microwave sensors solve difficult application problems in solids. The level is also detected reliably in products with varying moisture content or fluctuating dielectric constant. High, narrow vessels or steep material cones in which non-contact measuring principles did not deliver optimum measuring results, can be measured without problem with VEGAFLEX.

VEGAFLEX 51 and 52 differ mainly in the thickness of the measuring cable.

VEGAFLEX 51 has a cable with 4 mm diameter and is available up to a length of 10 m.

• Measuring range up to 20 m with low min. distance.

• Up to 32 sensors (Ex area: 8 sensors) can be connected via one two-wire cable.

• Two-wire sensor, supply and digital measuring signal via one two-wire cable.

• Unaffected by application conditions such as:

- dust and noise generation

- humidity changes

- varying products

- buildup

• Adjustment without vessel filling or emptying.

• Unaffected by vessel material, e.g. metal, concrete, plastic etc.

• Measuring cable or gravity weight must not be insulated from the vessel.

The cable of VEGAFLEX 52 has a diameter of 8 mm and can have a length of up to 20 m. Due to the stronger cable it is suitable for solids subjected to higher extracting forces.

4 VEGAFLEX 51P and 52P

Product description

1.2 Application features

Applications

• Level measurement in solids.

• Measurement also in vacuum.

• All slightly conductive substances and all

products with a dielectric constant er > 1.7 can be measured.

• Measuring ranges VEGAFLEX 51 0 … 10 m VEGAFLEX 52 0 ... 20 m

Rugged

• High-resistance materials: PA, 1.4401.

Precise and reliable

• Resolution 1 mm.

• Unaffected by noise, steam, dust, gas

compositions and inert gas stratifications.

• Unaffected by varying density.

• Measurements under pressure up to

16 bar and at product temperatures up to 120°C.

Communicative

• Integrated measured value display.

• Optional display and adjustment module

separate from the sensor.

• Adjustment from the PLC level.

Approvals

• StEx Zone 10

• Ex Zone 0

1.3 Adjustment media

Adjustment with the adjustment module MINICOM

With the 6-key adjustment module MINICOM (3.2 cm x 6.7 cm) the adjustment can be carried out in clear text dialogue. The adjustment module can be plugged into the VEGAFLEX or into the external indicating instrument VEGADIS 50. It also possible to adjust VEGAFLEX from the external indicating instrument VEGADIS 50.

Tank 1 m (d)

12.345

Pluggable adjustment module MINICOM

Adjustment with PC

The setup and adjustment of the VEGAFLEX sensors can be done on the PC with the adjustment program VVO (VEGA Visual Operating) under Windows®. The software leads quickly through adjustment and parameter setting by means of pictures, graphics and process visualisations.

ESC

The adjustment program VVO from VEGA makes the full range of functions of VEGA sensors accessible and, if necessary, can update the entire sensor software. For this reason, the adjustment program must be installed on a PC which is equipped with a Profibus Master Class 2 interface card (Softing) (see figure under "1.4 Profibus output signal").

VEGAFLEX 51P and 52P 5

Product description

The PC with the Profibus interface card can be connected directly at any location to the DP bus by means of the standard RS 485Profibus cable.

The adjustment and parameter data can be saved with the adjustment software on the PC. On request, the adjustment can be also transferred to other sensors.

......

VEGALOG

571 CPU

571 EA

1 ... 15

1 … 32

Adjustment with the PC and the standard cable RS 232 on the VEGALOG processing system

1.4 Profibus output signal

As a process automation bus, Profibus PA enables power supply over the bus. Up to 32 sensors can be operated on a shielded twowire cable that carries both power supply and measuring signal. In Ex areas, up to ten sensors can be connected from the PA level to one two-wire cable (EEx ia).

Bus structure

The DP and PA bus consists of up to 126 master and slave participants. Data are always exchanged from point to point, with the data traffic being exclusively controlled and checked by master devices. Communication is carried out according to the Token-Passing procedure. This means that the master holding the token can contact the slaves, give instructions, enquire data and cause the slaves to receive and transmit data. After the work is done or after a predetermined time interval, the token is passed on by the master to the next master.

Master-Class 1

is the actual automation system, i.e. the process control computer or the PLC that enquires and processes all measured values.

Master-Class 2

One or several Master-Class 2 can operate in a Profibus network. As a rule, Master-Class 2 devices are engineering, adjustment or visualisation stations. The VEGA adjustment software VVO (VEGA Visual Operating) operates as Master-Class 2 participant on the DP bus and can work on an engineering PC, on an adjustment PC or on the process control computer and can access any VEGA sensor on the PA level.

6 VEGAFLEX 51P and 52P

Product description

Profibus adjustment structure

In the Profibus environment, there are different adjustment concepts and adjustment tools which often differ considerably from manufacturer to manufacturer. From the user’s point of view, a manufacturer-independent adjustment program which could be operated directly on the Profibus DP, but also at a central point (e.g. the engineering station or the process control), would be ideal.

In the past, only the program "SIMATIC PDM", based on the HART® adjustment structure, could fulfil this wish. However, this program also has the limitations common to HART®. As with HART®, the availability of an instrumentspecific database for a comprehensive adjustment with PDM (Process Device Managing) is a requirement. Otherwise, only the basic instrument functions such as adjustment will be available. In the PDM environment, this instrument-specific database is called EDD (Electronic Device Description), in complete analogy to the HART® environment which, except for the VEGA-HART instruments, also requires a DD (Device Description) for each sensor.

VEGAFLEX 51P and 52P 7

Product description

Adr. 21

SPS

Adr. 22

VVO

PA-

Adr. 23

Master-Class 1

Adr. 1

DP-Bus

Adr. 24

DP interface card as MasterClass 2 (e.g. Softing)

Adr. 10

Adr. 57

Segment coupler

Adr. 25 … 56

(max. 32 participants)

Adr. 58

Adr. 60

Adr. 59

Adjustment of the VEGAFLEX sensors from the process control via a Profibus interface card in the process control computer or in an additional PC. The adjustment software VEGA Visual Operating (VVO) accesses via the interface (interface card) the sensors bidirectionally.

8 VEGAFLEX 51P and 52P

Product description

Adjustment with adjustment module MINICOM

With the small (3.2 cm x 6.7 cm) 6-key adjustment module with display in the sensor, the sensor-relevant adjustments can be carried out directly on the sensor.

Tank 1 m (d)

12.345

Detachable adjustment module MINICOM

The adjustment module can be plugged into the sensor or into the optional, external indicating instrument.

ESC

Tank 1 m (d)

12.345

PA-Bus

ESC

Adjustment with the SIMA TIC PDM adjustment program

For adjustment of all essential functions of the VEGA sensor with the adjustment station SIMATIC PDM from Siemens, a so-called EDD is required. Without this EDD, only the basic functions such as min./max. adjustment or the integration time can be adjusted with the PDM adjustment program. Further important adjustment functions, such as input of measuring environment data or false echo storage, are not available without EDD. After integration of the EDD files in the Simatic PDM adjustment software, all important adjustment functions are accessible. If it is not at hand, the obligatory GSD (instrument master file) as well as the EDD (Electronic Device Description) necessary for PDM can be downloaded from the VEGA-Homepage (http://www.vega.com).

ESC

Tank 1 m (d)

12.345

max. 25 m

Adjustment with detachable adjustment module. The adjustment module can be plugged into the sensor or the external indicating instrument VEGADIS 50.

The sensor can be adjusted with the adjustment module MINICOM and basic functions can be set. Beside the measuring conditions and the simulation mode, the Profibus address can also be adjusted and a false echo storage can be carried out, see "4.2 Adjustment with MINICOM".

VEGAFLEX 51P and 52P 9

1.5 Type code

The second figure of the type name, e.g. VEGAFLEX 5[1]… distinguishes the instruments acc. to the stability of the cable.

The letter, e.g. VEGAFLEX 51[P] indicates the output signal: K stands for an analogue 4 … 20 mA output signal (compact instrument) V stands for a digital output signal (VBUS). P stands for a digital output signal with Profibus PA

VEGAFLEX XX P EXS.X G

G - Connection to segment coupler Profibus PA

Dust Ex approved

P - Digital output signal for connection to

Profibus PA

Type 51: Instrument series with 4 mm cable Type 52: Instrument series with 8 mm cable

Measuring technology (FLEX for guided microwave)

Product description

10 VEGAFLEX 51P and 52P

Product description

1.6 Bus configuration

The type of sensor you use depends on the process requirements and mounting conditions, as well as on the requirements of your control, regulative, or process control system.

VEGAFLEX 51P and 52P Profibus sensors are sensors for use in Profibus PA environment. Profile 3 has been implemented in the sensors. A measuring system consists of one or several sensors, one or several segment couplers and one DP master computer, such as e.g. a S7 PLC with Profibus interface or a process control system with Profibus DP-Master-Slot. The processing unit, e.g. the PLC, evaluates the level-proportional, digital measuring signals in a number of evaluation routines and puts them to use process-specifically.

On the following two pages you will find a schematic of the bus configuration.

The automation system as Master-Class 1 takes over the complete bus control. It reads out all signals cyclically and, if necessary, gives instructions to the participants (e.g. sensors). In addition, further master systems (e.g. visualisation systems or adjustment tools) can be connected to the DP bus. These systems operate as so-called MasterClass 2 participants. Like the Master-Class 1 system, they can read out signals, give instructions and operate in acyclical mode.

A DP bus does not allow power supply via signal cable, whereas the PA bus does. Both, DP and PA, require at least one screened two-wire cable. The DP bus can additionally have up to 8 cores (screened), some of which can be supply cables.

Each participant on the bus must have an address. The addressing covers both bus levels. A Profibus DP system can have max. 126 participants, including all participants on the PA level. In practice, each Master-Class 1 computer gets address 1 and the MasterClass 2 computers address 10 … 20. As a rule, the slaves or participants get the addresses 21 … 126. On the Profibus PA level, max. 32 sensors are possible on one PA segment coupler.

Ex environment

In Ex environment, intrinsically safe (EEx ia) PA sensors are used with Ex segment couplers. Generally, the number of PA sensors on a segment coupler (Ex or non Ex) depends on the current requirement of the sensors and on the current supplied by the segment coupler. Segment couplers for EEx ia environment provide 90 … 110 mA. The number of sensors results from the sum of:

- the basic current intake of all sensors

- plus 9 mA communication signal

- plus the leakage currents of all sensors

- plus a recommended current reserve (approx. 10 mA)

The min. basic current has been set at 10 mA according to the Profibus specification. VEGA Profibus sensors constantly consume a basic current of 10 mA and operate without leakage current requirement, so that in Ex environment, up to ten VEGA sensors can be operated on one segment coupler.

VEGAFLEX 51P and 52P 11

Address 1

Product description

2…8

Segment coupler

PLC/DCS

Address

21...52

Profibus PA

21 22 52

1 … 32 sensors (Ex: 1 … 10)

Master-Class 2 interface card

12 VEGAFLEX 51P and 52P

Address 10

Product description

Profibus DP

Segment coupler

Address

53...84

Address

3~M

Address

Profibus PA

53 54 84

Address

1 … 32 sensors

VEGAFLEX 51P and 52P 13

Technical data

1.7 Technical data

Power supply

Supply voltage 9 … 32 V DC) (output voltage UO of the segment dependent on the segment coupler used coupler) see PA specification, e.g.

- non Ex e.g. 22 V DC (nominal voltage of the segment

- Ex 13.5 V DC nominal voltage of the segment

Current consumption constant 10 mA (no leakage current output) Cable load dependent on the segment coupler, see

Measuring range

VEGAFLEX 51 0.3 … 10 m VEGAFLEX 52 0.3 … 20 m

Output signal

digital (Profibus) two-wire technology:

Integration time 0 … 999 seconds (adjustable)

coupler) max. 32 sensors on one two-wire cable

coupler max. 10 sensors on one two-wire cable (typical 8 sensors)

technical data of the segment couplers and Profibus specification

the digital output signal (meas. signal is modulated onto the power supply and is further processed in the PLC or in the process control

Adjustment

- adjustment software VEGA Visual Operating on Master-Class 2 PC

- adjustment module MINICOM in the sensor or in the external indicating instrument (optional)

- process adjustment interface PACTwareTM (VVO as subprogram)

- SIMATIC PDM in conjunction with Electronic Device Description (EDD)

Accuracy

(under reference conditions acc. to IEC 770 - relating to the max. measuring range)

Linearity error < 0.1 % Temperature drift 0.015 %/10 K Characteristics linear Deviation in characteristics including

linearity, reproducibility and hysteresis (determined acc. to the limit point method) better than 0.05 %

Average temperature coefficient of the zero signal 0.06 %/10 K Resolution general max. 1 mm Resolution of the output signal 0.005 % or 1 mm

Similar to DIN 16 086, reference conditions according to IEC 770, e.g. temperature 15°C … 35°C; moisture 45 % … 75 %; pressure 860 mbar … 1060 mbar

The adjustment time (also actuating time, response time or adjustment period) is the time the sensor requires to output the correct level (with max. 10% deviation) after a quick level change.

14 VEGAFLEX 51P and 52P

Technical data

Characteristics

Min. span between full and empty adjustment

- digital output signal 10 mm

Adjustment time

> 1 s (depending on the parameter setting) Measuring range begin 300 mm below the seal surface Measuring range end upper edge of the gravity weight or

the cable loop

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 -60°C … +80°C Protection IP 66/IP 67 (meets both protections) Protection class

- two-wire sensor II Overvoltage category III Max. tensile load

- cable ø 4 mm 5 KN

- cable ø 8 mm 20 KN

Ex technical data

StEx Zone 10 Ex Zone 0 The permissible operating data of VEGAFLEX sensors for StEx areas are stated in the certificate.

Process connections

VEGAFLEX 51 and 52 G 11/2 A, 11/2" NPT

chromized steel or 1.4301 (stainless steel)

Connection cables

Two-wire sensors power supply and signal via one

Wire cross-section generally 2.5 mm

two-wire cable

Ground connection max. 4 mm

Cable entry 2 x M20 x 1.5 (cable entry 5 … 9 mm)

Materials

Housing PBT (Valox) or Aluminium (powder-coated) Cable 1.4401 (stainless steel, 316) or

galvanized steel/PA coated

VEGAFLEX 51P and 52P 15

Product description

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 indication

Display scalable analogue and digital

display of measured values (option) An external measured value display powered by the sensor can be mounted at a distance of up to 25 m from the sensors.

Signal output

Signal output digital output signal in two-wire technology

(Profibus)

Two-wire technology: The digital Profibus output signal (measuring signal) is superimposed on the power supply and further processed in the signal conditioning instrument or in the processing system.

16 VEGAFLEX 51P and 52P

Product description

1.8 Approvals

VEGAFLEX sensors are approved for StEx Zone 10.

Please note the attached approval documents if you want to use a sensor in Ex environment.

1.9 Data format of the output signal

Byte4 Byte3 Byte2 Byte1 Byte0

Status Meas. value (IEEE-754 format, see below)

Status byte:

The status byte corresponds to the profile 3.0 "Profibus PA Profile for Process Control Devices" coded. The status "Meas. value OK" is coded as 80 (hex) (Bit7 = 1, Bit 6 … 0 = 0).

Measured value:

The meas. value is transferred as 32 Bit floating point number in the IEEE-754 format.

Byte n Byte n+1

Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit

7654321076543210 VZ 27262524232221202-12-22-32-42-52-62

Sign

Exponent Mantissa

-7

Byte n+2 Byte n+3

Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit Bit

7654321076543210

2-82-92

-102-112-122-132-142-152-162-172-182-192-202-212-222-23

Mantissa Mantissa

Formula: Meas. value = (-1)VZ • 2

Examples: 41 70 00 00 (hex) = 0100 0001 0111 0000 0000 0000 0000 0000 (bin)

Meas. value = (-1)0 • 2

(Exponent - 127)

(130 - 127)

• (1 + 2-1 + 2-2 + 2-3)

• (1 + Mantissa)

= 1 • 23 • (1 + 0.5 + 0.25 + 0.125) = 1 • 8 • 1.875 = 15.0

VEGAFLEX 51P and 52P 17

1.10 Dimensions

VEGAFLEX 51

Plastic housing Aluminium housing

201

10˚

101

215

185

Product description

25 116

322

182

165

Cable ø 4 mm uncoated 125 mm Cable ø 4 mm coated 250 mm

SW 55

G 1½ A

244

ø 4

155

ø 8

ø 20

370

205

EXD connection housing

268

SW 55

G 1½ A

ø 8

Adjustment module MINICOM Cable loops

Tank 1 m (d)

12.345

ESC

32,5

ø 4

155

ø 20

67,5

Adjustment module to be plugged into the series 50 sensors or into the external indicating instrument VEGADIS 50

Cable - steel

18 VEGAFLEX 51P and 52P

Cable - plastic coated

Product description

VEGAFLEX 52

Plastic housing Aluminium housing

201

215

185

10˚

322

182

165

345

SW 64

G 1½ A

101

370

ø 8

205

EXD connection housing

25 116

368

SW 64

G 1½ A

ø 8

250

Cable ø 8 mm uncoated 200 mm Cable ø 8 mm coated 400 mm

ø 12

ø 40

ø 12

ø 40

VEGAFLEX 51P and 52P 19

250

2 Mounting

Mounting

2.1 Installation instructions

Lateral load

Make sure that the measuring cable is not subjected to strong lateral forces. Mount VEGAFLEX to a position in the vessel where no interfering influences from e.g. stirrers, filling openings etc., can occur.

Lateral load

Extraction forces

In case of strong extraction forces, e.g. during quick emptying or settling of solids, high tensile loads can occur.

When such an installation position is necessary, the cable should not be anchored but only equipped with a gravity weight, so that the cable can more easily follow the product movements.

Shortening the measuring cable

The cable can be shortened later as required. Loosen the three set screws on the gravity weight (hexagon) and remove them. Pull the cable out of the gravity weight.

To avoid fraying the steel cable during cutting, you have to tin the cable around the cutting position with a soldering iron or torch, or wrap the cable tightly with wire or insulating tape. Shorten the cable with a metal cutting saw or a cutting wheel to the desired length.

In case of insulated cables with gravity weight, a certain length of insulation should be removed (VEGAFLEX 51: 45 mm; VEGAFLEX 52: 60 mm). In cable loops, the insulation must remain on the cable.

After shortening, reinsert the cable (see "4.2 Adjustment with adjustment module MINICOM").

Make sure that the vessel top can support the max. tensile load.

Pressure

In case of gauge or low pressure in the vessel, the mounting boss should be sealed on the thread. Use the attached seal ring. Check if the seal ring is resistant against the contained medium.

20 VEGAFLEX 51P and 52P

Shortening the measuring cable

Mounting

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 cable entry is very important.

Use cable with a round conducting crosssection and tighten the cable entry. The cable entry is suitable for cable diameters of 5 mm to 9 mm.

Moisture from outside

To avoid moisture ingress, the electrical connection cable should be looped downward behind the cable entry so that rain and condensation water can drain off.

This is mainly valid for mounting outdoors, in areas where humidity is expected (e.g. by cleaning processes) or on cooled or heated vessels.

If this happens, anchor the cable. When straining the cable, avoid high cable tension. In our price list, you will find a spring (as accessory) which prevents overloading of the cable.

Please note that in solids, strained cables must be able to resist strong forces. In case of strong extracting forces, the cable should not be anchored. Please note the paragraph "Extracting forces".

Cable electrode in solids

Buildup

Generally, buildup on the cable will cause only slight changes of the measured value. If strong buildup on the cable is expected, the use of insulated cable is recommended. The higher surface quality prevents buildup.

Abrasion

In very abrasive products, e.g. in loose

Moisture

Anchoring

In general, the measuring result will be noticeably influenced if the gravity weight comes into contact with the vessel wall. Depending on the kind of solid, the installation or the kind of filling, the cable can "float" in spite of the gravity weight. The solid can push the

chippings, use a measuring cable without insulation.

Socket

Sockets cause strong interfering reflections. Therefore avoid socket mounting. If this is not possible, choose the flattest socket possible and use a socket with a diameter of at least 600 mm.

cable to the vessel wall or to the top, causing incorrect measured values.

VEGAFLEX 51P and 52P 21

Mounting

Material cone

When selecting a mounting location for VEGAFLEX in the vessel, please remember that material cones can form in solids, causing inaccurate measuring results. We recommend selecting a mounting location where the cable detects an average value of the material cone.

d 6

VEGAFLEX should be installed at a spot that takes the filling and emptying apertures of the vessel into consideration. To compensate measuring errors caused by the material cone, you should install the cable at a distance of d/6 from the vessel wall or vessel installation. In any case keep, a min. distance of 300 mm.

1 Emptying 2 Filling opening 3 VEGAFLEX

22 VEGAFLEX 51P and 52P

Electrical connection

3 Electrical connection

3.1 Connection – Connection cable

– Screening

Safety information – Qualified personnel

Instruments which are not operated with protective low voltage or DC voltage must be connected only by qualified personnel. This also applies to the configuration of measuring systems planned for Ex environment.

As a rule, do all connecting 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 instruments.

Connection cables and bus configuration

Very often "Electromagnetic pollution" by electronic actuators, energy lines and emitting systems is so considerable that the twowire cable should be screened.

We recommend the use of screened cable. This screening also guards against future sources of interference. The screening should be applied only to one sensor end (fig. 3.1 a). It is better if the screens are earthed on both ends. However, it must be certain that no earth compensation currents flow via the sensor cable screens (fig. 3.1 b). Earth compensation currents can be avoided by connecting the cable screen (in case of earthing on both sides) on one earthed side (e.g. in the switching cabinet) via a capacitor (e.g.

0.1 µF; 250 V AC) to earth potential. Use a very low impedance earth connection (foundation, plate or mains earth). In dust-Ex applications the screen should be on one end. Potential losses can be caused by earthing on both ends.

Note the Profibus specification. The connection cables must be specified for the expected operating temperatures in the plant and must have an outer diameter of 6 … 12 mm, to ensure the seal effect of the cable entry on the sensor.

For power supply and bus communication, a two-wire cable acc. to the Profibus specification (up to max. 2.5 mm2 cross-section area of conductor) is used. The electrical connection on the sensor is made by spring-loaded terminals.

In a laboratory setup, a Profibus system will also work with standard, unshielded two-wire cable. In practice however, an automation network and bus system can only be protected reliably against electromagnetic interference with screened cable. Acc. to the Profibus specification (IEC 1158-2), screened and twisted cables are prescribed.

All participants are connected in one line (serially). At the beginning and end of the bus segment, the bus is terminated by an active bus termination. On the DP bus level, most participants already have a bus termination implemented. With more than 32 participants on the DP level, a so-called repeater must be used to open and combine another DP level with a max. of 32 additional participants. On the PA bus branch of the segment coupler, the PA radar sensors work also with max. 32 participants (Ex max. 10 participants).

A PA sensor can work only in conjunction with a Profibus DP system, to which a Profibus PA subsystem is connected. A PA Profibus participant must consume min. 10 mA supply current.

VEGAFLEX 51P and 52P 23

Electrical connection

Earthing on one sensor end

Processing

Earthing on both ends (on the processing unit via potential separating capacitor)

Fig. 3.1 a

³ 0.1 µF 250 V AC

Processing

In dust-Ex applications the screening should only be made on one side. Due to potential difference earthing on both sides is not al-

Fig. 3.1 b

lowed.

24 VEGAFLEX 51P and 52P

Electrical connection

Connection cable and cable length

Connection cables must correspond to the Profibus specification and the FISCO model. The sensor cable must be in conformity with the values of the reference cable acc. to IEC 1158-2:

0.8 mm2; R Z

= 80 … 120 W; damping = 3 dB/km;

31.25kHz

asymmetric

The max. cable length first of all depends on the transmission speed:

up to 32 kbit/s: 1900 m Profibus PA up to

94 kbit/s: 1200 m Profibus DP

up to

188 kbit/s: 1000 m Profibus DP

up to

500 kbit/s: 500 m Profibus DP

up to

1500 kbit/s: 200 m Profibus DP

up to

12000 kbit/s: 100 m Profibus DP

The distributed resistance of the cable, in conjunction with the output voltage of the segment coupler and the current requirement (VEGAFLEX 10 mA) or the voltage requirement (VEGAFLEX 9 V) of the sensors, determines the max. length of the cable.

In a practical application of a PA bus branch, the max. length of the cable is also determined (beside the required supply voltage and max. current consumption of all participants on the PA bus branch) by the bus structure and the type of segment coupler used.

= 44 W/km;

DCmax.

= 2 nF/km.

Ground terminal

The electronics housings of the sensors have a protective insulation. The ground terminal in the electronics is galvanically connected with the metallic process connection. For sensors with a plastic thread as process fitting, the sensor grounding must be made by a ground connection to the outer ground terminal.

Screening

According to the Profibus specification screening should be applied to both ends. To avoid potential equalisation currents, a potential equalisation system must be available in addition to the screening.

According to specification, we recommend the use of twisted and screened two-wire cable, e.g.: SINEC 6XV1 830-5AH10 (Siemens), SINEC L26XV1 830-35H10 (Siemens), 3079A (Belden).

Alternatively, when grounding at both ends in non-Ex areas, the cable shielding can be connected on one ground side (in the switching cabinet) via a capacitor (e.g. 0.1 µF; 250 V) to the ground potential. Make sure that the ground connection has the lowest possible resistance (foundation, plate or mains earth).

The cable length results from the sum of all cable sections and the length of all stubs.

Profibus P A in Ex environment

The length of the individual stubs must not exceed the following lengths: 1 … 12 stubs 120 m (Ex: 30 m) 13 … 18 stubs 60 m (Ex: 30 m) 19 … 24 stubs 30 m (Ex: 30 m)

When used in Ex area, a PA bus with all connected instruments must be carried out in intrinsically safe protection class "i". Four-wire instruments requiring separate supply must at least have an intrinsically safe PA connec-

More than 24 stubs are not permitted, whereby each branch longer than 1.2 m is

tion. VEGA sensors for PA-Ex environment are generally "ia” two-wire instruments.

counted as a stub. The total length of the cable must not exceed 1900 m (in Ex version 1000 m).

VEGAFLEX 51P and 52P 25

Electrical connection

In the so-called Fieldbus Intrinsically Safe Concept (FISCO), the general conditions for an Ex safe bus configuration have been laid down. Therein the participants and the bus cables with their electrical data have been determined, so that the linking of these components always meets the Ex requirements. A more time-consuming Ex calculation is therefore not necessary. You can build your Ex bus according to the IEC standard 1158-

The Ex segment coupler delivers a controlled power supply to the PA bus. All other components (field instruments and bus terminators) are only consumers. A field instrument must consume at least 10 mA. Ideally, an individual sensor should not consume more than 10 mA, so that the number of instruments can be as large as possible.

VEGA PA sensors, whether Ex or non Ex, consume a constant current of 10 mA. According to the Profibus specification, this is the minimum participant current. With VEGA sensors it is therefore possible to connect 10 sensors (also in Ex environment) even with a limited energy supply from the Ex segment couplers.

Watch out for potential losses

Due to potential losses, earthing on both sides without a potential equalisation system is not allowed in Ex applications. If an instrument is used in hazardous areas, the required regulations, conformity and type approval certificates for systems in Ex areas must be noted (e.g. DIN 0165). Please also note the approval documents with the safety data sheet attached to the Ex sensors.

Ex protection

If an instrument is used in hazardous areas, the required regulations as well as the dustEx certificates of VEGAFLEX for systems in dust-Ex areas must be noted.

Electrical data of the cables

No. of A in Z cores mm

31.25kHz

C in Damping Screen nF/km

SINEC 6XV1 44 W/km 2 0.75 100 W < 90 < 3 dB/km Cu braiding 830-5AH10 +/- 20 W 39 kHz (Siemens)

SINEC L26XV1 44 W/km 2 0.75 100 W < 90 < 3 dB/km Cu braiding 830-35H10 +/- 20 W 39 kHz (Siemens)

3079A 105 W/km 2 0.32 150 W 29.5 < 3 dB/km Foil (Belden) 39 kHz

26 VEGAFLEX 51P and 52P

Electrical connection

128

8765 4

3.2 Sensor address

In a Profibus system composed of Profibus DP and Profibus PA subsystem, each participant must have a unique address. Each participant, whether master or slave, is accessed by means of its own address in the bus system. The address of a participant, whether on DP or PA level, should be assigned before connecting to the bus, because an address can be used only once. If an address is used twice, interference in the bus will be caused.

The address of a VEGAFLEX sensor can be set in three ways:

- with the adjustment software VVO (soft-

ware addressing),

- with the DIP switch block in the sensor

(hardware addressing) or

- with the adjustment module MINICOM.

VEGA Profibus sensors are dispatched with the address set at 126 (all DIP switches to "ON"). Remember, in a Profibus system there are max. 126 participants possible. When the DIP switch is set to address 126 (or higher), the address can be adjusted with the adjustment software VVO, the adjustment module MINICOM or another configuration tool (e.g. PDM). However, there can be only one sensor on the bus with address 126 (delivery status) during address assignment via software. For that reason, hardware addressing (DIP switch) before connection to the bus is recommended.

Hardware addressing

The DIP switches generate an address number in the binary system. This means that, from right to left (ascending), any switch represents a number twice as high as the previous switch on the right. The corresponding number in the decimal system results from the sum of all switches set to "ON". In the illustration, you see the decimal number that corresponds to each individual DIP switch.

DIP switch 8 corresponds to the number 128, switch 1 corresponds to the number 1 and switch 3 corresponds to the decimal number

Example 1

The switches 3, 5 and 7 are set to "ON". The address is then: DIP switch 3 to "ON" means 4 DIP switch 5 to "ON" means 16 DIP switch 7 to "ON" means 64

4 + 16 + 64 = Address 84

8765 4

VEGAFLEX 51P and 52P 27

64 + 16 + 4 = 84

Electrical connection

Example 2

You want to set address 27. 16 + 8 + 2 + 1 = 27

You must set the DIP switches 5 = 16 4 = 8 2 = 2 1 = 1 to "ON".

Example 3

You want to set address 99 64 + 32 + 2 + 1 = 99

You must set the DIP switches 7 = 64 6 = 32 2 = 2 1 = 1 to "ON".

Software addressing

The DIP switches must be set to an address of 126 … 255, i.e.

- either all DIP switches are set to "ON", corresponding to address 255 (delivery status)

OFF

8765 4

8765 4 Addr.

- or only DIP switch 8 is set to "ON", corresponding to address 128.

128

Of course, software addressing is also possible if the switches 7 … 2 are set to "ON" (address 126).

The adjustment of the address with software VVO is described in the operating instructions of the adjustment software VVO.

It is also possible to set the address with the adjustment module MINICOM. Please check the menu schematic of MINICOM.

28 VEGAFLEX 51P and 52P

Electrical connection

3.3 Connection of the sensor

• Loosen the closing screw on the upper side of the sensor.

• Open the sensor cover.

• Remove the compression nut from the

cable entry and slide the nut a small distance over the connection cable.

• Remove the rubber seal from the cable entry and slide it over the connection cable.

• Strip off the insulation of the connection cable over a length of approx. 10 cm.

Version with Aluminium housing

Power supply and Profibus signal

To the indicating instrument in the sensor lid or to the external indicating instrument VEGADIS 50

–

M20x1.5 (diameter of the connection cable 6…9 mm)

• Insert the cable through the cable entry into the sensor.

• Connect the cables. Push back the white tabs of the spring terminals with a small screwdriver and insert the copper core of the connection line into the terminal opening. Check the hold of the cables in the terminal by slightly pulling on them.

• Screw the compression nut back on to the cable entry and fasten it tightly.

Version with plastic housing

Power supply and Profibus signal

M20x1.5 (diameter of the connection cable 6…9 mm)

To the indicating instrument in the sensor lid or to the external indicating

–

instrument

Spring-loaded terminals (max. 2.5 mm2 wire cross-section)

87654

8 765 4

+1 2- 5678

Addr.

Bus

Display

ESC

Opening tabs

Pluggable adjustment module MINICOM

+1 2- 5678

Addr.

Bus

Tank 1 m (d)

12.345

Display

ESC

VEGAFLEX 51P and 52P 29

3.4 Connection of the external indicating instrument

Loosen the four screws of the housing lid on VEGADIS 50. The connection procedure can be facilitated by fixing the housing cover during connection work with one or two screws on the right of the housing.

Adjustment module

OUTPUT (to the sensor)

VEGADIS 50

Tank 1 m (d)

12.345

Electrical connection

ESC

Voltage supply and digital meas. signal

8 7654

+1 2- 5678

Addr.

Bus

Tank 1 m (d)

12.345

DISPLAY (in the lid of the indicating instrument)

Display

ESC

Screws

30 VEGAFLEX 51P and 52P

Setup

4 Setup

4.1 Adjustment media

All VEGA Profibus sensors operate in profile 3 and can be adjusted with:

- the adjustment program VVO on a PC with Profibus card

- the adjustment program PACTwareTM, under which VVO runs as a subprogram

- the Siemens software PDM in conjunction with an EDD (Electronic-Device-Description)

- the adjustment module MINICOM in the sensor.

Adjustment with VVO on the PC

The adjustment program VVO enables userfriendly adjustment of VEGA Profibus PA sensors. All functions and options of sensor adjustment are accessible. The program runs under Windows® on a PC with a Profibus-Master-Class 2 interface card on Profibus DP level as Master-Class 2 tool. The VVO program accesses the VEGA PA sensors via the DP bus, the segment coupler and the PA bus.

The adjustment program VVO from VEGA makes full range of functions of VEGA sensors available and can update the entire sensor software if necessary. For this reason, the adjustment program must be installed on a PC which is equipped with a ProfibusMaster-Class 2 interface card (Softing) (see figure on the next page).

The adjustment and parameter data can be saved with the adjustment software on the PC and protected by passwords. On request, the adjustment can be also transferred to other sensors.

In practice, the adjustment program VVO is often installed as a tool on an engineering station or an adjustment station. VVO then accesses over the bus each VEGA sensor via the Profibus interface card (e.g. from Softing) as Master-Class 2, from the DP level, through the segment coupler on the PA level right down to the individual sensor

Device description (DD)

Beside the instrument master file (GSD), by which a sensor is logged on the Profibus system, the majority of all Profibus sensors requires for adjustment, beside the specific adjustment software, also a so-called EDD (Electronic Device Description) for each sensor, to access and adjust the sensor from the bus levels. This is not the case with VVO. The adjustment software VVO can communicate at any time with all VEGA sensors without requiring a special database. Of course, all other VEGA sensors can be adjusted with the adjustment software as well (4 … 20 mA sensors or VBUS sensors). With VEGA sensors, it is not necessary to go looking for the latest EDD. This is the essential requirement of a manufacturer-independent adjustment program anticipated by many users.

The PC with the Profibus interface card can be connected directly at any location on the DP bus by means of the standard RS 485Profibus cable.

VEGAFLEX 51P and 52P 31

Setup

Adjustment with P ACT ware

TM 1)

The adjustment with PACTwareTM corresponds to VVO adjustment, in this case, VVO runs as a subprogram of PACTwareTM. The adjustment instructions can be found in the documentation of PACTwareTM.

Adjustment with PDM

The sensors can be adjusted completely with PDM. However, some user-friendly functions and many special features, like e.g. display of an echo curve, are not available. In addition to the PDM software, an EDD (upon request available from VEGA) is required for each sensor type. The adjustment instructions for PDM are described in the PDM documentation.

Adjustment with the adjustment module MINICOM

With the adjustment module MINICOM, you adjust the individual sensor directly on the sensor or in the external indicating instrument VEGADIS 50. The adjustment module MINICOM enables (with the 6 key adjustment field with text display) all essential functions of parameter setting and adjustment.

4.2 Adjustment with the adjustment module MINICOM

As with the PC, the sensor can also be adjusted with the small detachable adjustment module MINICOM. The adjustment module is inserted into the sensor or into the external indicating instrument (optional).

ESC

Tank 1

m (d)

12.345

4 ... 20 mA

ESC

Tank 1

m (d)

12.345

The adjustment module also provides all the adjustment options available on the PC with adjustment program VVO. All adjustment steps can be carried out with 6 keys of the adjustment module. A small display gives you, beside the measured value, a short information on the menu item or the value of a menu adjustment.

Not possible, however, are parts of the adjustment relating to the configuration and signal processing (e.g. linearisation curve). This is only possible with the PC.

32 VEGAFLEX 51P and 52P

Setup

Adjustment elements

The adjustment module MINICOM is menu orientated. The clear text indications on the display lead through the menu. The functions of the keys are described in the following.

Tank 1

m (d)

12.345

OK key (4)

With the OK key adjustments can be confirmed.

When the symbol ▼ or is displayed, you can move with the OK key to the next lower menu level.

With the symbol there is no branch below

▼ ▼

the menu item but only another menu item of respective function.

ESC key (3)

With the Escape key (ESC) you can, depending on the menu item, interrupt an adjustment or a function or change to the next higher menu level.

ESC

▼ ▼

Arrow keys (5)

With the keys > and < you can move within the menu level from one menu item to the other.

Digital indication (1)

On the digital indication the actual measured value is displayed during operation. When you adjust the instrument, the clear text indication displays the appropriate function.

▼

Branching point from which you can change to a lower menu.

▼

This symbol informs you about an ensu-

▼

ing safety enquiry.

E.g. to reach the top menu level, push the ESC key several times.

+ and - key (2)

With the keys + and - you can modify the values of the parameters or choose from several possibilities.

After pushing the first time, the value to be adjusted flashes. The value will be modified by further pushing the key.

VEGAFLEX 51P and 52P 33

Setup

Address

First choose a free bus address (see chapter 3.2 Sensor address").

Adjustment steps

On the following pages you see the menu schematic of the adjustment module MINICOM.

Set up the sensor in the following sequence. The numbers are stated near the appropriate menu items in the menu schematic on the following pages.

1. Adjustment

2. Conditioning

3. Outputs

4. Operating range

5. Meas. conditions

6. Indication of the useful and noise level

1. Adjustment

Under the menu item " the sensor with which span it should work.

Max.

Min.

Adjustment

100 % (distance to the medium

0.300 m) corresponds to 1200 l

0 % (distance to the medium

5.850 m) corresponds to 456 l

" you inform

Span

Adjustment without medium

• Enter with the "+" and "–" key the distance

to the medium your sensor has at 0 % filling (example: 5.850 m) If you do not know the distance, you have to do a sounding.

• Enter the distance to the medium which

your sensor has at 100 % filling.

Key Display

Sensor

m(d)

4.700

Para-

meter adjustment

Adjustment

without medium

Adjustment in

(min. adjustment)

m(d)

0.0 %

m (d)

XX.XXX

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. 80 % or 100 %, enter in the menu "

Max. adjustment

" with the "+" and "–" keys 80

% or 100 % and confirm with the "OK" key.

with medium

You can carry out the adjustment without medium. Generally, you will carry out the adjustment without medium, since you can adjust without filling the vessel.

In case of two values which can be modified, you can move with the "OK" key to the second value.

34 VEGAFLEX 51P and 52P

Min. adjust at %

XXX.X

Max. adjust at %

XXX.X

Setup

2. Conditioning

Under the menu item " choose the distance at 0 % and at 100 % filling. Then you enter the parameter and the appropriate unit as well as the decimal point.

• Enter in the menu window "

sponds

" the value of the 0 % filling. This will

be e.g. "80" for 80 l.

• 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 l.

• Confirm with "OK".

• If necessary, choose a decimal point. Note

that max. 4 digits can be shown.

• In the menu " rameter (mass, volume, distance…)

• In the menu " unit (kg, l, ft3, gal, m3 …).

• With the ESC key you change 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 dependence between percentage value of the product distance and the percentage value of the filling volume. You can choose between linear, spherical tank and cylindrical tank. The adjustment of a user-programmable curve is only possible with the PC and the adjustment program VVO.

• In the menu item adjust a delay for the signal output.

Conditioning

0 % corre-

prop. to

" you choose the pa-

Unit

" you choose the physical

"Lin. curve"

you can choose

"Integration time"

" you

you can

3. Outputs

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 usually better to choose a slightly bigger operating range (approx. 5 %) than the measuring range (span).

Example: Set min./max. adjustment: 0.300 … 5.850 m; operating range to approx. 0.250 … real cable length. If you shorten the cable, you have to redefine the cable length.

5. Meas. conditions

With these functions you can enter the ambient conditions in the vessel. (see menu schematic)

6. Useful level 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 level

The higher the S-N value (useful level minus noise level), the higher 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 (useful echo)

minus noise level)

Under the menu " display and determine which parameter the sensor display should show.

VEGAFLEX 51P and 52P 35

Outputs

" you can scale the

Menu schematic of the adjustment module MINICOM

Setup

Sensor

m(d)

4.700

Parameter

Sensor optimise

Sensor Tag

Sensor

Meas. enviro nment

Operating range

Begin

m (d)

FLEX51 P

0.50

When switching on, the sensor type and the software version are displayed for a few seconds.

Configuration

Cable length

m (d)

6.00

Meas. condit ions

Condit ion

solid

Sensor Tag

Sensor

Foaming prod.

Sensor addr.

(••••/ • •••)

Low DK product

126

Meas. unit

m (d)

False echo memory

Update

Meas. dist.

m (d)

X.XX

Echo learn Now !

OK ?

Learning!

Update

Meas. dist.

m (d)

X.XX

Update Now !

OK ?

Learning!

Delete

Delate Now !

OK ?

Delating!

Adjustment

w.out medium

Adjustment in

m(d)

0.0 %

m (d)

XX.XXX

100.0%

m (d)

XX.XXX

with medium

Minadjust at %

XXX.X

Maxadjust at %

XXX.X

Note:

Set up the sensor in the sequence of the numbers.

Signal conditioning

Scaling

0 % correspond

XXXX

Lin. curve

Linear

100 % correspond

XXXX

Integr ation time

Decimalpoint

888.8

0 s

Prop.

Unit

Masse

36 VEGAFLEX 51P and 52P

Setup

With these keys you move in the menu field to the left, the right, top and bottom.

ESC

False echo memory

Reset Now !

OK ?

Reset ing!

Distance

m (d)

4.700

Ampl.:

XXdB

S-N:

weitere Funkt.

Info

False echo

memory

Reset Now !

OK ?

Reset ing!

Language

English

Ampl.:

Sensor Tag

Sensor

Sensor type

FLEX51 P

Serial number

1094 0213

Softw. vers.

1.00

Softw. date

15.09. 1997

Sensor addr.

(••••/ • •••)

126

Distance

m (d)

4.700

S-N:

XXdB

Outputs

PAoutput

Prop. to

Distance

Error mode

last value

Sensor displ.

Prop. to

Distance

VEGAFLEX 51P and 52P 37

Simulation

Simulation Now!

Simulation

XXX.X

OK?

act. dist.

X,XX

Fast change

Yes

Bolt print figures are sensor or measured value information and cannot be modified in this position.

The menu items in white letters stand for figures which can be modified with the "+" or "–" key and saved with the "OK" key.

Setup

4.3 Adjustment with the PC

Before you can adjust the sensors with the adjustment program VVO (VEGA Visual Operating), they must be integrated into the Profibus system. First of all address the sensors and connect them to your PA segment. With the attached GSD file you integrate the sensors into your system.

To adjust VEGA sensors with the adjustment software VVO, the PC or the adjustment station on which VVO is installed must be equipped with a Profibus DP interface card (e.g. of Messrs. Softing). The PC or the adjustment station communicates then as Master-Class 2 participant on the DP bus with the VEGA sensors on the PA bus segment.

To connect the PC to the DP bus, a standard RS 485-DTE interface cable (Data Terminal Equipment) is required. With the cable you connect the DP interface card on the bus or to the segment coupler.

PC BUS

Screen 1 1 Screen – – 2 2 M24

RxD/TxD-P 3 3 RxD/TxD-P

– – 4 4 CNTR-P

GND 5 5 GND

– – 66VP – – 7 7 P24

RxD/TxD-N 8 8 RxD/TxD-N

– – 9 9 CNTR-P

Profibus-DP DP bus (in brackets the interface card PIN number of the P+F

segment couplers)

(40)

(55)

(41)

Segment coupler

Profibus PA cable

VVO

DP cable

Profibus DP interface card (Messrs. Softing)

Sensor Sensor Sensor Sensor

If the computer is connected to the Profibus DP cable, you can start VVO.

• Switch on the power supply of the connected sensor.

• Start the adjustment software VVO (VEGA Visual Operating) on your PC.

• In the entrance window you choose with the arrow keys or the mouse the item

ning

and click to OK.

You should only choose

Planning

Plan-

if you are authorised to modify instrument parameters. Otherwise choose

tenance

In the window

User identification

Operator

Main-

you are

asked for the name and the password.

• For setup (

planning

) enter under name: VEGA and under password also: VEGA. It does not matter if you use capital or small letters.

VVO determines automatically the type of the connected sensor and shows shortly with which sensor a connection exists.

Further information on the adjustment with PC and the adjustment software VVO is stated in the operating instructions of the adjustment software VEGA Visual Operating (VVO).

38 VEGAFLEX 51P and 52P

Setup

Configuration

The term "Configuration" means the basic adjustments of the meas. system. You inform the meas. system about the application (level measurement, gauge, distance …), the measurement loop name and the DCS output address of the sensors. The configuration corresponds to an electronic wiring and labelling of your sensor or, in other words, telling the system which sensor for what application and where.

Parameter adjustment

After the configuration, you carry out the parameter adjustment for each individual sensor. This means adjusting the sensors to the respective operating range and adjusting to the actual application. You inform the sensor which product distance (which level) is "empty" and which "full". This is called adjustment. Here you choose in which physical unit (volume, mass) and unit of measurement (m3, gal, liters …) the adjusted measured value should be outputted. In the submenu "Sensor optimisation" you inform the sensor electronics about the actual environment, such as e.g. quick changes of the measured value, foam generation, gas stratification, solid or liquid.

• To do this click to " "

Program

" and click to "

Configuration

Communication

", point to

• First click to "

Profibus DP (for PA sensors

Then choose the Profibus card which is installed in your PC.

The window for the bus communication adjustments opens. Ten is preadjusted as address for the Master-Class 2 interface card. If participant number ten is free on your bus, you can accept the setting. Typical values for bus parameters have been preset. At this point, you should adjust the communication parameters that apply to your system.

• Now click to "OK".

The message "

dows® must be restarted

VEGAFLEX 51P and 52P 39

VVO will shut down and Win-

" appears.

Note: As a rule, a Windows® restart is not necessary.

• Now start VVO (restart).

Special functions

As soon as a VEGAFLEX sensor has been identified, you can choose with the adjustment software VVO some special functions of VEGAFLEX.

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

Measuring environment

Setup

Operating range

With this command you can limit the operating range of the sensor or enter the cable length again after shortening the cable. Carry out the adjustment before modifying the operating range, since a later adjustment can overwrite the values of the operating range.

The right side of the graphics shows the operating range, the left side the adjustment.

If you, for example, do not want to fill your vessel completely, you can limit the operating range.

Echo curve

The echo curve shows all reflections of the guided microwave signal. This means not only the product signal is shown but also false signals caused, e.g. by vessel installations.

Measuring conditions

Choose in this menu if you want to measure in solids or liquids.

If you want to measure a product the DK value of which is below 2, you can increase the sensitivity of the sensor.

40 VEGAFLEX 51P and 52P

Generally, the sensor identifies the biggest amplitude as the useful echo. You see a black arrow above the highest amplitude. When you click to "Display info", a small window is displayed, listing the detailed values of the selected echo.

Setup

Empty vessel profile (blue)

This curve shows in normal condition the actual empty vessel profile.

To gate out of 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 are suppressed (ringing, noise, false echoes etc.).

Zoom/Unzoom

After activation of these two functions, you can either zoom or unzoom the curve with the left mouse key.

When you activate "Zoom", you can choose the requested part of the figure by pushing the left mouse key and drawing a frame.

The following curves can be displayed:

Raw value curve (red)

The red curve means the absolute signal which the receiver of VEGAFLEX detects. Beside the useful echo, this curve also contains false signals.

The highest amplitude is detected as useful echo. Check by sounding to determine if the value of the useful echo corresponds to the actual distance to the level.

If the two values do not correspond, you have to gate out the dominant false echoes with the function "Empty vessel profile".

All amplitudes above this line are possible echoes which are processed by the software.

Logarithmic raw value curve (black)

The curve shows the difference between raw value curve (red) and reference line (green). The scale on the right side (dB) applies to this curve.

Documentation

If you click on the button "Documentation", the actual echo curve will be saved.

Echo data

If you click on the button "Echo data", a window is displayed in which all echoes detected by the sensor are listed with dB information and a probability evaluation.

VEGAFLEX 51P and 52P 41

Start

If you click to "Start", the echo curve will be updated continuously. With "Stop" you can terminate the update.

Empty vessel profile

With the functions in this window you can gate out false echoes. The blue empty vessel profile curve in the echo curve window shows the actual empty vessel profile.

Determine the level by sounding. If the sensor has identified a false echo as most probable echo instead of the actual filling level, you can gate the echo out.

Choose the function "Create new". Enter the measured distance to the medium. All false echoes in the range up to the adjusted distance are automatically gated out.

With "Update" you can extend the empty vessel profile if new false echoes occur as the level falls. If you want to delete the existing empty vessel profile, click to "Cancel".

Setup

42 VEGAFLEX 51P and 52P

Diagnostics

5 Diagnostics

5.1 Simulation

To simulate a certain filling, you can call up the function "Simulation" on the adjustment module MINICOM or in the software VVO program.

You simulate a certain measured value and thereby a certain sensor current. Please note that connected instruments, such as e.g. a PLC, react according to their adjustments and will probably activate alarms or system functions.

Simulation with VVO

If you start the simulation mode with the adjustment program VVO on the PC, the simulated level is outputted until you quit the simulation mode.

Simulation with MINICOM

If you start the simulation mode on the adjustment module MINICOM, the sensor returns to standard operating mode after one hour.

5.2 Function diagram

The following function diagram is used for setup with the automation system, if there is no adjustment software available. Make sure that all VEGA sensors are profile 3 sensors. In general, the setup of the sensors can be carried out very conveniently with the VEGA adjustment software VVO or with the adjustment module MINICOM in the sensor.

The function diagram is generally not necessary for setup and is used only to deepen the knowledge of the interested user who is able to read in the sensor measured values into the processing system (also without adjustment tool).

VEGAFLEX 51P and 52P 43

Raw-Distance (value, status) [in m]

Sensor value (Float) [sensor unit (m,ft ...)]

Sensor offset (Float) [sensor unit (m,ft ...)]

Zero adjust

Zero offset

Function diagram and PA parameters

F Time (Float) (sec) (not available over PA Parameter)

Filter

Cal point hi, cal point lo (Float) [sensor unit (m,ft ...)]

Level hi, level lo (Float) [level unit (%,m,ft ...)] (*1)

Cal type (Unsigned8) Live adjustment (min-max) and dry adjustment possible

Cal

Level hi

Level lo

Cal point hi Cal point lo

Simulate procent value (DS_50) [level unit (%,m,ft...)] (*1) (manuf. spec. parameter)

Simulation

off

Simulate value

Level (Float) [level unit (%,m,ft...)] (*1)

Level offset (Float) [level unit (%,m,ft...)] (*1)

Offset

44 VEGAFLEX 51P and 52P

Function diagram and PA parameters

Simulation distance value (DS_50) [sensor unit (m,ft ...)] (manuf. spec. parameter)

Simulation

off

Simulate value

Secondary value 2 (DS_33) [secondary value 2 unit, (m,ft ...)]

distance

Max min memory

max min

Secondary value 1 (DS_33) [secondary value 1 unit (%,m,ft...)] (*1)

Max sensor value, min sensor value (Float) [sensor unit (m,ft ...)]

Lin type (Unsigned8), Tab index (Unsigned8), Tab X Y value (2 x Float) [level unit (%,m,ft ...). (*1) primary value unit (%,m,ft ...)]. (*1) Tab min number (Unsigned8), Tab max number (Unsigned8), Tab op code (Unsigned8), Tab status (Unsigned8), Tab actual number (Unsigned8)

Linearization

level %

Transducer

Block

Primary value (DS_33) [primary value unit (%,m,ft...)] (*1)

lin %

distance

VEGAFLEX 51P and 52P 45

lin % level % distance

Display source select (Unsigned8)

Source selector

scale

PV FTime (Float) [sec]

Function diagram and PA parameters

Sensordisplay

VEGA

Hi hi limit, hi limit, lo limit, lo lo limit, alarm hys (Float) [out scale unit]

Alarm checkFilter

Hi hi limit Hi limit

Lo limit Lo lo limit

Alarm hyst

Hi hi alarm, hi alarm, lo alarm, lo lo alarm (DS_39) Alarm sum (DS_42)

lin %

level %

Channel (Unsigned16)

Channel

distance

Simulate Linearization value (DS_50) [primary value unit (%,m,ft ...).(*1) secondary value 1 unit, (%,m,ft ...).(*1) secondary value 2 unit, (m,ft ...) (dep. on channel)]

Simulation

off

Simulate value

46 VEGAFLEX 51P and 52P

Function diagram and PA parameters

Fail safe value (Float) [out scale unit]

Fail safe type (Unsigned8)

Target mode (Unsigned8)

Out (DS_33) [out scale unit]

Fail safe

Fail safe value

Divice status

PV scale (2 x Float) [primary value unit (%,m,ft ...).(*1) secondary value 1 unit, (%,m,ft ...).(*1) secondary value 2 unit, (m,ft ...) (dep. on channel)]

PV Scale

EU 0% EU 100%

Mode

Auto

Man

Mode & Status calc.

Out scale (DS_36) [out scale unit (included)]

Out Scale

EU 100%

EU 0%

Data value (DS_33) [out scale unit]

Actual mode (DS_37)

Function

Block

VEGAFLEX 51P and 52P 47

5.3 Error rectification

Error Error rectification

Diagnostics

E 013 Sensor cannot find - Message is displayed during the warm-up

E 017 Adjustment span too small Carry out a new adjustment.

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 could be too low.

Check the useful level and noise level. See 4.2 Adjustment with adjustment module MINICOM / Useful and noise level (6). If the message still remains, carry out a new adjustment.

Make sure that the difference between min. and max. adjustment is at least 10 mm.

- Sensor requires programming (service).

- Failure message remains also during a current programming.

electronics defect Contact our service department.

48 VEGAFLEX 51P and 52P

Parameters

5.4 PA parameters

The following parameter listing and the function diagram are used for setup with the automation system, if no adjustment software is available. The listing represents the parameters of the function block and transducer block and is only meant for very experienced Profibus users. Make sure that all VEGA sensors are profile 3 sensors. Normally, you will carry out the setup of the sensors with greater ease using the VEGA adjustment software VVO or the adjustment module MINICOM in the sensor.

The PA parameters and the function diagram are generally not necessary for setup.

VEGAFLEX 51P and 52P 49

Index P arameter Object Read Write T ype Size Store Unit

0 Directory object header DM Ja Nein Array of

1 Composite list directory

entries

16 Block object FB_Primary_Value Ja Nein DS-32 20 C m

17 St rev FB_Primary_Valu e Ja Nein Unsigned16 2 N m

18 Tag desc FB_Primary _Value Ja Ja OctetString 32 S m

19 Strategy FB_P rimary_Value Ja Ja Unsigned16 2 S m

20 Alert key FB_Primary_Valu e Ja Ja Unsigned8 1 S m

21 Target mode FB _Primary_Value Ja Ja Unsigned8 1 S m

22 M ode blk FB_Primary_Valu e Ja Nein DS-37 3 D m

23 Alarm sum FB_Primary_Value Ja Nein DS-42 8 D m

24 Batch FB_Primary_Value Ja J a DS-67 10 S m

26 Out FB_Primary_Value Ja Ja (*1) DS-33 5 D [out scale unit] m

27 PV scale FB_Prima r y_V a l ue Ja Ja 2 * Fl oa t 8 S [pri m, sec1, sec2 v a l ue

28 Out scale FB_Primary_Va lue Ja Ja DS-36 1 1S includes out scale unit m

29 Lin type FB_Primary_Value Ja Ja (*1) Unsigned8 1 S m

30 C hannel FB_Primary_Value Ja Ja Unsigned16 2 S m

32 PV FTime FB_Primary_Value Ja Ja Float 4 N sec m

33 Fsafe type FB _Primary_V alue Ja Ja Unsigned8 1 S o

34 Fsafe value FB_Primary_Value Ja Ja Float 4 S [out scale unit] o

35 Alarm hys FB_Primary_Value Ja Ja Float 4 S [out scale unit] m

37 HI HI Lim FB_Primary_Value Ja Ja Float 4 S [out scale unit] m

39 HI Li m FB_Primary_Value Ja Ja Float 4 S [out scale unit] m

41 LO Lim FB _Primary_Value Ja Ja Float 4 S [out scale unit] m

43 LO LO Lim FB_Primary_Value Ja Ja Float 4 S [o ut scale unit] m

46 HI HI Alm FB_Primary_Value Ja Nein DS-39 1 6 D o

47 HI Alm FB_Primary _Value Ja Nein DS-39 16 D o

48 LO Alm FB _Primary_Va lue Ja Nein DS-39 16 D o

49 LO LO Alm FB_Primary_Value Ja Nein DS-39 16 D o

50 Simulate FB_Prima r y_V a l ue Ja Ja DS-5 0 6 N [pr im, sec1, se c2 valu e

61 View object

FB_Primary_Value

DM Ja Nein Array of

FB_Primary_Value Ja Nein OctetString 18 D m

Unsigned16

12 C m

24 C m

unit (dep. on channel)

PA parameters

Optio nal

manda t ory

50 VEGAFLEX 51P and 52P

PA parameters

Index P arameter Object Read Write T ype Size Store Unit

66 Block obj e ct PB Ja Nei n DS- 3 2 20 C m

67 St rev PB Ja Nein Unsigned16 2 N m

68 Tag desc PB Ja Ja OctetString 32 S m

69 St rategy PB Ja Ja Unsigned16 2 S m

70 Alert key PB Ja Ja Unsigned8 1 S m

71 Target mode PB Ja Ja (* 1) Unsigned8 1 S m

72 M ode blk PB Ja Nein DS-37 3 (D) m

73 Alarm sum PB Ja Nein DS-42 8 D m

74 Softw a r e revis i on PB Ja Nein Octe tS tr i ng 16 C m

75 Hardwar e revisi on PB Ja Ne i n Oc te tStrin g 16 C m

76 Device man ID PB Ja Nein Unsigned16 2 C m

77 Devi ce ID PB Ja Nein OctetS tr i n g 16 C m

78 Device ser num PB Ja Nein OctetString 16 C m

79 Diagno sis PB Ja Nein OctetString 4 D m

81 Diagnosis mask P B Ja Nein OctetString 4 C m

83 Device certification PB Ja Nein OctetString 32 C o

84 Write locking PB Ja Ja Unsigned16 2 N o

85Factory reset PB JaJaUnsigned162S o

86 D ecriptor PB Ja Ja Octet String 32 S o

87 Device me ssa g e PB Ja Ja Octe tS tr i n g 32 S o

88 Devi ce i n sta l l d a te PB Ja Ja OctetS tr i n g 1 6 S o

90 Ident number select PB Ja Ja Unsigned8 1 S m

91 HW write protection PB Ja Nein Unsigned8 1 D o

99 VVO PB Ja Ja OctetString 32 o

100 View object PB PB Ja Nein Octe tS tr i n g 1 7 D m

180 Display source select TB Ja Ja Unsigned8 1 N o

120 Block object TB_Level Ja Nein DS-32 20 C m

Optio nal

manda t ory

VEGAFLEX 51P and 52P 51

PA-Parameter

Index P arameter Object Read Write T ype Size Store Unit

121 St rev TB_Level Ja Nein Unsigned16 2 N m

122 Tag desc TB_Level Ja Ja OctetString 32 S m

123 St rategy TB_Level Ja Ja Unsigned16 2 S m

124Alert key TB_Level JaJaUnsigned8 1S m

125 Target mode TB _Level Ja Ja (*1) Unsigned8 1 S m

126 M ode blk TB_Level Ja Nein DS-37 3 (D) m

127 Alarm su m T B_L e ve l Ja Nein DS - 42 8 D m

128 Primary value TB_Level Ja Nein DS-33 5 D [primary value unit] m

129 Primary value unit TB _Level Ja Ja Unsigned16 2 S m

130 Level TB_Level Ja Nein Flo at 4 D [level unit] m

131 Level unit TB_Level Ja Ja Unsigned16 2 S m

132 Senso r value TB_Level Ja Nein Float 4 D [sensor unit] m

133 Senso r unit TB_Level Ja Ja Unsigned16 2 S m

134 Seco ndary value 1 TB_Level Ja Nein DS-33 5 D [secondary value 1

135 Seco ndary value 1 unit TB_Level Ja Ja Unsigned16 2 S o

136 Seco ndary value 2 TB_Level Ja Nein DS-33 5 D [secondary value 2

137 Seco ndary value 2 unit TB_Level Ja Ja Unsigned1 6 2 S o

138 Senso r offset TB_Level Ja Ja Float 4 S [sensor unit] m

139 Cal type TB_Level Ja Ja Unsigned8 1 S m

140 Cal po int lo TB_Level Ja Ja Float 4 S [sensor unit] m

141 Cal point hi TB_Level Ja Ja Float 4 S [sensor unit] m

142 Level lo TB _Level Ja Ja Float 4 S [level unit] m

143 Level hi TB _Level Ja Ja Float 4 S [level unit] m

144 Level offset TB _Level Ja Ja Float 4 S [level unit] m

145 Lin type TB _Level Ja Ja Unsigned8 1 S m

148 Senso r high limit TB_Level Ja Nein Flo at 4 C [sensor unit] o

149 Senso r low limit TB_Level Ja Nein Float 4 C [sensor unit] o

150 Max sensor value TB_Level Ja Ja Float 4 N [sensor unit] o

15 1Mi n sensor va l u e TB_Level Ja Ja Float 4 N [se n sor unit] o

156 Tab index TB _Level Ja Ja Unsigned8 1 D o

unit]

Optio nal

manda t ory

52 VEGAFLEX 51P and 52P

PA-Parameter

Index P arameter Object Read Write T ype Size Store Unit

157 Tab X Y value TB_Level Ja Ja 2 * Float 8 N [secondary value 1 unit,

158 Tab min number TB_Level Ja Nein Unsigned8 1 C o

159 Tab max number TB_Level Ja Nein Unsigned8 1 C o

160 Tab op code TB_Level Ja Ja Unsigned8 1 D o

161 Tab status TB_Level Ja Nein Unsigned8 1 D o

162 Tab actual number TB_Level Ja Nein Unsigned8 1 D o

190 Simulate sensor value TB_Level Ja Ja DS-50 6 N [sensor unit] o

191 Simulate level TB_Level Ja Ja DS-50 6 N [level unit] o

19 2 F üllguttyp TB_Level Ja J a Unsigned8 1 N o

193 Echo quality TB_Level Ja Nein Unsigned8 1 D dB o

194 First echo factor TB _Level Ja Ja Unsigned8 1 N o

196 Lerndistanz TB _Level Ja Ja Float 4 D [sensor unit] o

19 7 S t ö rech o speicher-

Aktion

198 Arbeitsbereich

Ende

199 Arbeitsbereich

Anfang

200 schnelle

Meßwertänderung

201 unruhige

Füllgutoberfläche

202 Schaum bildung TB_Level J a J a Unsigned8 1 N o

203 st ark e

Staubentwicklung

204 Bodenreflexion / großer

Schüttwinkel

205 kleiner DK-Wert TB_Level Ja Ja Unsigned8 1 N o

210 Korrektur-

faktor Au sbr-.geschw.

211 Berechn. Korr.fak.

Ausbr.

212 Rohrdurchmesser TB_Level Ja Ja Float 4 N [sensor unit] o

250 View object TB_Level TB _Level Ja Nein OctetString 22 D m

TB_Level Ja J a Unsigned8 1 D o

TB_Level Ja Ja Float 4 N [sensor unit] o

TB_Level Ja J a Unsigned8 1 N o

TB_Level Ja J a Float 4 N % o

TB_Level Nein Ja Float 4 N [sensor unit] o

primary value unit]

Optional

manda to ry

VEGAFLEX 51P and 52P 53

Notes

54 VEGAFLEX 51P and 52P

Notes

VEGAFLEX 51P and 52P 55

VEGA Grieshaber KG Am Hohenstein 113 D-77761 Schiltach Phone (0 78 36) 50 - 0 Fax (0 78 36) 50 - 201 E-Mail info@de.vega.com www.vega.com

ISO 9001

All statements concerning scope of delivery, application, practical 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

2.25 321 / October 2000

VEGA FLEX52P User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety information

Note Ex area

1 Product description

1.1 Function

1.5 Type code

1.6 Bus configuration

1.7 Technical data

1.8 Approvals

1.9 Data format of the output signal

2 Mounting

2.1 Installation instructions

3 Electrical connection

3.2 Sensor address

4 Setup

4.1 Adjustment media

4.3 Adjustment with the PC

5 Diagnostics

5.1 Simulation

5.2 Function diagram

5.3 Error rectification

5.4 PA parameters