VEGA FLEX51K User Manual

Operating Instructions

VEGAFLEX 51K

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 51K

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 ............................................................. 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 51K 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 principle often delivers less than optimum measuring results, can be measured without problem by VEGAFLEX. VEGAFLEX 51 is equipped with a cable of 4 mm diameter and is available up to a length of 10 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 10 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 substances and all substances with a dielectric value er > 1.8 can be measured.

• Measuring range 0 ... 10 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 51K

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

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 51K 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

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.

Connection to a PLC (active).

Connection to an indicating instrument VEGADIS 371 with up to 4 relay outputs.

VEGADIS 50

VEGAFLEX

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) 4 … 20 mA

passive

2 2

VEGADIS 11

4 … 20 mA

PLC

Relay (4 x)

0/4 … 20 mA

only with HART

4 … 20 mA passive

separate power supply with

four-wire technology

VEGADIS 371 Ex

6 VEGAFLEX 51K

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 51[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 51 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 4 mm cable

Measuring technology (FLEX for guided microwave)

VEGAFLEX 51K 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

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

20 22 24 26 28 30 32 34 3615 16 18

Voltage supply

The min. supply voltage depends on the sensor current.

15 14

04 22

Range of the required terminal voltage on the sensor

Sensor current

Measuring range

VEGAFLEX 51 0.3 ... 10 m

Output signal

4 … 20 mA current signal, load max. 500 W

8 VEGAFLEX 51K

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 4 mm: 10 KN (check the max. tensile

load of the silo ceiling)

Process fittings

VEGAFLEX 51 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 51K 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 separate, 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

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

- 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 51K

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