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11 Diagnostics and servicing

VEGAPULS 21 • Two-wire 4 … 20 mA/HART

58351-EN-191014

Fault description

Cause

Rectification

Measured value fluctuates

around 10 … 20 %

Level

time

Various echoes from an uneven product

surface, e.g. a material cone

Check parameter "Type of medium" and

adapt, if necessary
Optimize installation position and sen-

sor orientation

Reflections from the product surface via

the vessel wall (deflection)

Select a more suitable installation po-

sition, optimize sensor orientation, e.g.

with a swivelling holder

Measured value jumps spo-

radically to 100 % during

filling

Level

time

Changing condensation or contamina-

tion on the antenna

Carry out a false signal suppression

or increase false signal suppression

with condensation/contamination in the

close range by editing

Bulk solids: Measurement error during emptying

Fault description

Cause

Rectification

Measured value remains un-

changed in the close range

during emptying

Level

time

False signal greater than level echo or

level echo too small

Eliminate false signals in the close

range. Check: Antenna must protrude

out of the socket
Remove contamination on the antenna
Minimize interfering installations in the

close range by changing the polariza-

tion direction
After eliminating the false signals, the

false signal suppression must be de-

leted. Carry out a new false signal

suppression

Measured value jumps spo-

radically towards 100 %

during emptying

Level

time

Changing condensation or contamina-

tion on the antenna

Carry out false signal suppression or in-

crease false signal suppression in the

close range by editing

Measured value fluctuates

around 10 … 20 %

Level

time

Various echoes from an uneven product

surface, e.g. an extraction funnel

Check parameter "Type of medium" and

adapt, if necessary

Reflections from the product surface via

the vessel wall (deflection)

Optimize installation position and sen-

sor orientation

11.6 Software update

The device software can be updated in the following ways:

•

HART signal

•

Bluetooth

The following components are required:

Содержание VEGAPULS 21

Страница 1: ...Operating Instructions Radar sensor for continuous level measurement of liquids VEGAPULS 21 Two wire 4 20 mA HART Document ID 58351...

Страница 2: ...9 3 5 Accessories 10 4 Mounting 11 4 1 General instructions 11 4 2 Mounting instructions 12 4 3 Measurement setup Flow 15 5 Connecting to power supply 18 5 1 Preparing the connection 18 5 2 Connectin...

Страница 3: ...11 5 Treatment of measurement errors 38 11 6 Software update 41 11 7 How to proceed if a repair is necessary 42 12 Dismount 43 12 1 Dismounting steps 43 12 2 Disposal 43 13 Certificates and approvals...

Страница 4: ...nt ID By entering the Document ID on www vega com you will reach the document download Information note tip This symbol indicates helpful additional infor mation and tips for successful work Note This...

Страница 5: ...s The instrument must only be operated in a technically flawless and reliable condition The operator is responsi ble for the trouble free operation of the instrument When measuring aggressive or corro...

Страница 6: ...nformation is only valid for USA and Canada Hence the follow ing text is only available in the English language Installations in the US shall comply with the relevant requirements of the National Elec...

Страница 7: ...Device unlock code The further scope of delivery encompasses Documentation Ex specific Safety instructions with Ex versions If necessary further certificates Note Optional instrument features are als...

Страница 8: ...ne Scan the QR code on the type label of the device or Enter serial number manually in the VEGA Tools app available free of charge in the respective stores 3 2 Principle of operation VEGAPULS 21 is a...

Страница 9: ...PC notebook using DTM PACTware 1 2 4 3 5 O PE N TWIST USB LO C K Fig 4 Connecting the PC to the signal cable 1 Sensor 2 HART resistance 250 optional depending on evaluation 3 Connection cable with 2...

Страница 10: ...t be stored only under the following conditions Not in the open Dry and dust free Not exposed to corrosive media Protected against solar radiation Avoiding mechanical shock and vibration The permissib...

Страница 11: ...re Process pressure Process temperature Chemical properties of the medium Abrasion and mechanical influences Protect your instrument against moisture ingress through the following measures Use a suita...

Страница 12: ...g the sensor keep a distance of at least 200 mm 7 874 in from the vessel wall If the sensor is installed in the center of dished or round vessel tops multiple echoes can arise However these can be sup...

Страница 13: ...ane for the min max adjustment see following diagram 1 Fig 8 Reference plane 1 Reference plane Do not mount the instruments in or above the filling stream Make sure that you detect the product surface...

Страница 14: ...mm 6 600 mm 23 6 in Note When mounting on longer sockets we recommend carrying out a false signal suppression see chapter Parameter adjustment The mounting location of the radar sensor should be a pla...

Страница 15: ...ators in motion This ensures that the interfering reflections from the agitators are saved with the blades in different positions Fig 14 Agitators Through the action of filling stirring and other proc...

Страница 16: ...e The measurement can be individually configured for the respective flume via a PC notebook and PACTware DTM The measurement can be individually configured for the respective flume via a PC notebook a...

Страница 17: ...20 mA HART 58351 EN 191014 2 3 4 x hmax 90 hmax B 1 250 mm 9 84 Fig 16 Flow measurement with Khafagi Venturi flume hmax max filling of the flume B tightest constriction in the flume 1 Position sensor...

Страница 18: ...additional instruments in the circuit see load values in chapter Technical data Use cable with round cross section for instruments with housing and cable gland To ensure the seal effect of the cable g...

Страница 19: ...uit steel pipe Maximum torque see chapter Technical data If shielded cable is required we recommend that the cable screening be connected to ground potential on one side of the supply side In Ex syste...

Страница 20: ...ind further information on the max wire cross section under Technical data Electromechanical data Connect the instrument as described in the following wiring plan 5 3 Wiring plan 1 2 1 Fig 18 Connecti...

Страница 21: ...e 4 20 mA HART 58351 EN 191014 5 4 Switch on phase After connection to the power supply the device carries out a self test Internal check of the electronics Output signal is set to failure The current...

Страница 22: ...ools as all Bluetooth access codes are automatically synchronized when connected to the myVEGA account The emergency Bluetooth unlock code enables Bluetooth communi cation to be established in the eve...

Страница 23: ...er known It can t be changed The emergency device unlock code can also be found on the supplied information sheet Emergency codes If this document is lost the emergency device unlock code can be retri...

Страница 24: ...Select the requested instrument in the device list For the first connection the operating device and the sensor must authenticate each other After successful authentication the next con nection functi...

Страница 25: ...rameter protection is deactivated by default and can be activated at any time It is recommended to enter a personal 6 digit device code To do this go to menu Extended functions Access protection menu...

Страница 26: ...After activating the integrated Bluetooth or the Bluetooth USB adapt er devices with Bluetooth are found and created in the project tree 8 2 Connecting Select the requested sensor for the online para...

Страница 27: ...ssible if the parameter protection is deactivated When delivered parameter protection is deactivated by default and can be activated at any time It is recommended to enter a personal 6 digit device co...

Страница 28: ...ing system PLC Voltage supply 5 Interface adapter VEGACONNECT Note With power supply units with integrated HART resistance internal resistance approx 250 an additional external resistance is not neces...

Страница 29: ...ed in a DTM Collec tion The DTMs can also be integrated into other frame applications according to FDT standard Note To ensure that all instrument functions are supported you should always use the lat...

Страница 30: ...e standard version In the full version there is also an extended print function for complete project documentation as well as a save function for measured value and echo curves In addition there is a...

Страница 31: ...stration Silo slender and high Units Distance unit of the device Temperature unit of the instru ment Distance in m Temperature in C Adjustment Max adjustment distance A Min adjustment distance B Max a...

Страница 32: ...of specification On Off Off Menu item Selection Basic settings Status Sensor status Measured value status Status output HART Device Status Status additional measured val ues Echo curve Indication of...

Страница 33: ...less faults can occur during operation These may be caused by the following e g Sensor Process Voltage supply Signal processing The first measures are Evaluation of fault messages Checking the output...

Страница 34: ...vice or send in for repair de pending on device version The LED illuminated ring on the device see chapter Configuration indicates the operating status of the device This enables simple on site diagno...

Страница 35: ...t because a failure is expected in the near future e g due to buildup This status message is inactive by default Code Text message Cause Rectification DevSpec State in CMD 48 F013 no measured value av...

Страница 36: ...for repair Bit 8 of Byte 0 5 F261 Error in the instru ment settings Error during setup False signal suppression faulty Error when carrying out a reset Repeat setup Carry out a reset Bit 9 of Byte 0 5...

Страница 37: ...rdware error EEPROM Exchanging the electronics Send instrument for repair Bit 2 of Byte 14 24 M503 Measurement reli ability too low The echo noise ratio is too small for reliable measurement Antenna d...

Страница 38: ...d be a line resistance that is too high Liquids Measurement error at constant level Fault description Cause Rectification Measured value shows a too low or too high level Level time 0 Min max adjustme...

Страница 39: ...interferences due to instal lations in the close range Change polarisation direction Chose a more suitable installation po sition Measured value jumps to wards 100 during filling Level time 0 Due to s...

Страница 40: ...ption Cause Rectification Measured value shows a too low or too high level Level time 0 Min max adjustment not correct Adapt min max adjustment Incorrect linearisation curve Adapt linearisation curve...

Страница 41: ...range during emptying Level time 0 False signal greater than level echo or level echo too small Eliminate false signals in the close range Check Antenna must protrude out of the socket Remove contamin...

Страница 42: ...tware update is carried out You can find detailed information in the download area at www vega com 11 7 How to proceed if a repair is necessary You can find an instrument return form as well as detail...

Страница 43: ...e g pressure in the vessel or pipeline high temperatures cor rosive or toxic media etc Take note of chapters Mounting and Connecting to voltage supply and carry out the listed steps in reverse order 1...

Страница 44: ...nt duties That is why we have introduced an environment management system with the goal of continuously improving company environmental pro tection The environment management system is certified accor...

Страница 45: ...loaded from our homepage Materials and weights Materials wetted parts Antenna PP Process fitting PP Process seal Klingersil C 4400 Materials non wetted parts Housing Plastic PBT Polyester Housing seal...

Страница 46: ...mm 0 039 in Fault signal current output adjustable mA value unchanged 20 5 mA 22 mA 3 6 mA Max output current 22 mA Starting current 3 6 mA 10 mA for 5 ms after switching on Load See load resistance u...

Страница 47: ...pplication Binding specifications are thus not possible 0 25 m 0 8202 ft 10 mm 0 3937 in 10 mm 0 3937 in 2 mm 0 079 in 2 mm 0 079 in 0 1 2 3 Fig 28 Deviation under reference conditions 1 Antenna edge...

Страница 48: ...ock Impact resistance IK07 acc to IEC 62262 Process conditions For the process conditions please also note the specifications on the type label The lowest value amount always applies Process temperatu...

Страница 49: ...ction Integrated Permissible residual ripple for 12 V UB 18 V 0 7 Veff 16 400 Hz for 18 V UB 35 V 1 Veff 16 400 Hz Load resistor Calculation UB Umin 0 022 A Example with UB 24 V DC 24 V 12 V 0 022 A 5...

Страница 50: ...o wire 4 20 mA HART 58351 EN 191014 14 2 Dimensions VEGAPULS 21 50 mm 1 97 122 mm 4 80 25 mm 0 98 G1 SW 50 58 mm 2 28 77 5 mm 3 05 1 14 NPT R 1 156 mm 6 14 1 2 3 Fig 29 Dimensions VEGAPULS 21 1 Thread...

Страница 51: ...la pagina web www vega com www vega com VEGA www vega com 14 4 Hash function acc to mbed TLS mbed TLS Copyright C 2006 2015 ARM Limited All Rights Reserved SPDX License Identifier Apache 2 0 Licensed...

Страница 52: ...of delivery application practical use and operat ing conditions of the sensors and processing systems correspond to the information available at the time of printing Subject to change without prior n...

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