VEGASON 71 - 1 … 75 - 1 TIB • Technical Information • Operating Instructions Pulse-Echomeasuring system 1 5.
Contents Introduction Contents of the instruction manual .....................................................4 Safety information ...............................................................................4 Special instructions for use in Ex-Zone 1 ...........................................4 Product description..............................................................................4 Technical Information Configuration of measuring system ....................................................
Contents Sensor optimization Selection of sensor optimization .......................................................38 Mode listing 1, sensor optimization ..................................................38 Information for sensor optimization ..................................................40 Limitation of the operating range Operating range begin / Operating range end ..................................41 Adapting to the product type....................................................................
Introduction Contents of the instruction manual The Technical Information / Operating Instructions is just called TIB. It contains all necessary information for correct: - installation - connection - start-up - linearization - optimization of the Pulse-Echo-measuring system VEGASON 71 - 1 … 75 - 1. This TIB is supplied as part of the order. Knowledge of the contents is important for correct operation of the indicating instrument.
Technical Information Configuration of a measuring system Inputs Central electronics Measuring data of transducer 1 Outputs Multi function indicator Module for relay output 1 and 2 Module for relay output 3 and 4 2 Module for current output 0 … 20 mA 1 2 3 4 Fail safe relay and fail safe-LEDs VEGASON Transducer Central electronics consisting of: - plastic housing with cover and integral operating elements (5 buttons) diodes (LED-indication) two multi function indications (LC-displays) power
Technical Information Technical data Power supply operating voltage standard option power consumption at Unenn and max.
Technical Information Technical data Current outputs (continuation) module or module - with range resolution load load dependent failure as above 2 outputs 0/4 … 20 mA 0,05 % of range max.
Technical Information Dimensional drawings (dimensions in mm) appr. 155 1 2 40 1 2 3 Flange DN 150 PN 16 4 90 * Mounting dimensions Flanged gimbal 5 *229 Min. distance for further instruments *174 VEGASON Central electronics appr. 100 Pg 13,5 Pg 7 45 1" BSP 0,5…0,8 m ø95 Min. distance 0,8…1,2 m 91 Sensor SW Sensor 71 … 73 SW 72 / 73 71 R … 73 R Min.
Technical Information Measuring ranges The measuring ranges described below are max. values and can change dependent on process conditions. The location of the sensors should be carefully selected and it should be noted that no struts, edges or material inflow impede the measurement (see installation recommendations page 10 and 11).
Technical Information Installation examples for liquid tanks - Select sensor type and installation in relation to max. level to be measured. - Protect the inner side of the socket piece for corrosion or use non-corrosive material. - In case of round tank ceilings, the sensor should be installed on a socket piece not located in the centre or on an opening (on half radius). In closed vessels: Tube or direct mounting.
Technical Information Installation examples for solids - Select sensor type and installation in relation to max. level to be measured. - Protect the inner side of the socket piece from corrosion or use non-corrosive material. - Always direct the sensor (sound pulse) to the centre of the silo. Installation with cylindrical socket piece - Install sensor as far as possible from the filling entry. - When using round ceilings, mount the sensor half way between silo middle and edge.
Technical Information Electrical connection + - + 15 16 17 18 19 20 9 10 11 12 13 14 1…………2 …………… 3………...4 Relay output 21 22 23 24 1………2 Current output Service socket 3 4 5 1 2 1 Fuse Type TR5 Manufacturer e.g. Messrs. Wickmann Current values see technical data page 6 Supply voltage 7 Service switch 2 Fail safe relay output 6 Attention! High voltage 8 max. line length = 300 m Sensor Note: During operation the transducer is pulsed with high voltages.
Operating surface Indication and operating elements Outer view Inner view LED-indication fault signal Units indicator visible in slot behind window Indication of measured value(s) MODEFIELD 1 8888 1 8888 MOD Selection of mode Cursor position Figures raise 2 2 8888 Figures lower STO Operating scheme 1 2 3 4 Storage PARAMETER FIELD LED-indication of relay output 1…4 Indication of measured values 5.
Operating surface Operating The VEGASON 71 - 1 … 75 - 1 has 3 modes which can be accessed (scrolling) via the MOD-button: Mode: 1. Indication of measured value If no push button is used for a 60 minutes period, the VEGASON 71 - 1 … 75 - 1 times out and reverts to the input value display. 1. indication of measured values 2. mode range 3. parameter input Indication of measured values: level in m level in % and acc. to the demonstration form e.g. quantity in hl 5.00 MOD 2. Mode range 0 00 0 99 16.
Start-up Flow diagram for start-up Connect sensors with central electronics and supply with operating voltage. The software version is indicated and the fault signal reacts. 5 6 1 ! 14.94 4 2 ! 0.00 The measuring system is now ready and starts for each separate channel with the commissioning preliminary indication: 0.00 m m Sensor Commissioning, i.e: 1. Echo limitation from top to bottom. 2. Echo limitation from bottom to top. Echo 3.
Start-up Mode listing 0 Function Adjustment channel 1 general parameters Mode-no. Mode description Parameter ( = factory preset) 0 - 00 Software version ........................................ e.g. 16.93 0 - 01 … 09 not used ..................................................... – – – – 0 - 10 Selection of adjustment procedure - in m without level change ....................... - per cent correction .................................. - in % with level change ............................
Start-up Mode listing 0 Function Mode-no. Relay output 1 0 - 43 0 - 44 0 - 45 0 - 46 0 - 47 Relay output 2 0 - 48 0 - 49 0 - 50 0 - 51 0 - 52 Relay output 3 0 - 53 0 - 54 0 - 55 0 - 56 0 - 57 Relay output 4 0 - 58 0 - 59 0 - 60 0 - 61 0 - 62 0 - 63 71 - 1 … 75 - 1 general parameters (continuation) Mode description Coordination - measuring result .................................... Mode - two-point level switch ............................. - pump function switch .............................
Start-up Mode listing 0 Function Current output 1 and 2 general parameters (continuation) Mode-no. Mode description Parameter ( = factory preset) 0 - 64 0 - 65 0 - 66 not used ..................................................... Charac- end ............................... teristics - start .............................. – – – – 20.00 … 00.00 00.00 … 04.00 … 20.00 0 - 67 … 92 not used ..................................................... – – – – 0 - 93 p.
Adjustment Selection of adjustment procedure MODE 0 - 10 The type of empty adjustment (mode 11) and full adjustment (mode 12) is determined with the parameter adjustment of this mode. The type of adjustment depends on the local conditions. Mode description Mode 10 = 1 means adjustment in m without product level change, i.e. - with the adjustment procedure the distances in m determined from the vessel drawings are programmed relating to the levels 0 % and 100 % - level is not important.
Adjustment Empty / full adjustment in m without product level change MODE 0 - 11 and 0 - 12 Programming pre-requirement Mode 10 = 1 With this adjustment procedure two distances (sensor … product surface) are defined in m relating to the levels of 0 % and 100 %.
Linearization Linearization MODE 0 - 18 Adapting to vessel geometry The most usual vessel geometries are adjusted as fixed curves in mode 0 - 18. Mode 0 - 18 = 1 Fixed curve (linear) for cylindrical tank level percentage output Mode 0 - 18 = 2 Fixed curve for cylindrical tank volume percentage output It is also possible to program three customer specific curves by accessing linearization 4 … 6 and to activate them in mode 18.
Linearization Mode listing 4 Linearization curve 4 … 6 Linearization curve 4 Function Mode-no. Index marker 4.H.01 4.L.01 • • • 4.H.32 4.L.32 4 - 33 … 98 4 - 99 Linearization curve 5 Linearization curve 6 Mode description Parameter ( = factory preset) 1. index marker - level percentage............ - volume percentage ...... 000.0 … 100.0 000.0 … 100.0 32. index marker - level percentage ........... - volume percentage ...... 000.0 … 100.0 000.0 … 100.0 not used .............................
Linearization Determination of the index markers Gauging the level in litres - mode 40: coordinate display 1 to level 1 mode 99: select linearization curve 4 fill or empty step by step with part volume note the respectively measured values for H % (level percentage) or display 1 on the linearity protocol - the respective value for L % (volume percentage) should be calculated as follows 100 % x part volume 1 (…32) L % = –––––––––––––––––––––––– vessel volume - note the calculated values for L % in the lin
Linearization Linearity protocol Linearization curve index marker no. 24 level percentage H Linearization curve volume percentage L index marker no.
Linearization Programming example: Index marker 01 ........................................................ • index marker 01 4.H.01 select level percentage MODEFIELD Level percentage ...................................................... • acc. to linearity protocol program 12.0 % in PARAMETER FIELD • then store with STO-button • index marker 01 4.L.01 select volume percentage MODEFIELD Volume percent ........................................................ • acc.
Measurement, Display function Multiplier MODE 0 - 13 and 0 - 14 for 0 % and 100 % Values of 0000 … 9999 can be coordinated to level 0 % and 100 % after the adjustment procedure. The central electronics calculates out of this data all intermediate values. Measuring units and pattern MODE 0 - 15 In mode 0 - 15 the signal conditioning instrument can be defined for the display either proportional volume or level. Measuring units can be selected and slotted into the window.
Measurement, Display function Programming example Distance Level Distanz (linearized) Niveau 1m 100 % 5m 50 9m 0 After multiplying - the distance corresponds to 9 … 1 m - the level corresponds to 10 … 4000 hl 4000 hl Mode 14 2005 Mode 13 10 (10 hl = min. quantity) 5.00 Mode 15+16 2005 hl Example display 10 hl … 4000 hl Multiplier for 0 % ...................................................... • select mode 0 - 13 in MODEFIELD • program the value 001.
Measurement, Relay output Module for relay outputs 1 … 4 The pulse-echo measuring system can be equipped with max. two relay modules. Each module has two relay outputs.
Measurement, Relay output Mode (Module 1, relay output 1) continuation Mode 0 - 44 = 1 two-point level switch switching command 1 via switching command 2 corresponds to function B (protection against dry running of pumps) % m distance acc. to sensor type 100 75 50 (on) 25 0 Switching command 1 and 2 (Module 1, relay output 1) Mode 0 - 43 defines the measurement units coordinated to the relay output. Mode 0-44 determines the function of the relay output.
Measurement, Relay output Two-point level switch with pump function switch Using the VEGASON-measuring system in pump stations allows several pumps to be used independent of the level. Due to the different switching commands there could be unequal pump running times. % With programming the mode "pump function" the switch-on period of the respective relay outputs is monitored via the central electronics. An automatic change-over (priority determination) ensures equality of pump running periods.
Measurement, relay output Two-point level switch with pump function switch (continuation) Note - The switch points 1 (on) must be always above the switching commands 2 (off) (function B). Indication of the running period (maintenance info) The switching on period of the individual relay outputs, i.e. the running period of the respective pump is determined by a software operating hour counter. This period can be indicated on the display in the mode range under various mode numbers (see table below).
Measurement, relay output Tendency determination By parameter adjustment it is possible to define for each relay output the tendency determination mode and to coordinate this relay output to a channel. The adjustment is made in cm / min. and detects a range of 000.1 … 999.9 cm / min. The information for tendency determination is formed of the rate of level change per time unit (cm / min.) and can be taken for raising and lowering tendency.
Measurement, relay output Tendency determination (continuation) relating to reducing level example for relay output 1 Requirement: - enquire mode 4 (parameter 4) in mode 0 - 44 - program the value of the required tendency determination in mode 0 - 45 Procedure: - relay is not operated - if the level reduces quicker than programmed in mode 0 - 45, the relay energizes - if the filling speed is the same or lower than the given value, the relay de-energizes again Programming example for tendency determination
Measurement, Current output Output characteristic for current output 1 and 2 MODE 0 - 65 and 0 - 66 The pulse-echo measuring system can be equipped with a current module. The module has two current outputs. Within the total range of 0.00 … 20.00 mA each current value can be programmed for a raising or falling level. The characteristic of the current output is fixed by an initial and final point. The current-∆ between initial and final value must be min. 1 mA.
Supplementary programmings Signal processing MODE 0 - 93 The parameter adjustment of mode 0 - 93 defines the condition of - the relay outputs and - the current outputs in case of failure. Programming possibilities Mode 0 - 93 1 2 3 4 relay output / LED current output no change actual current is stored operated relays / de-energized current - 0 mA current acc. to 0 % current acc. to 100 % Programming example Changeover of the signal processing relating to channel 1 (input of figure 4) ...........
Supplementary programmings Simulation MODE 0 - 94 These modes enable the outputs for each channel to be simulated over the whole range of the distance in m, to test the function of the connected instrumentation. The simulation influences the selected channel and therefore the outputs coordinated to this channel, i.e. the - relay outputs - current outputs and - the indication (display 2) mode no.
Supplementary programmings Basic adjustment After having finished the parameter adjustment of one or several modes it may be necessary to reset the parameters of these modes to factory preset values. MODE 0 - 97 Mode 0 - 97 offers this possibility. Previously adjusted parameters are cancelled. Cancellation is indicated with CAL on the display (approx. 5 secs.). Programming example ..........................................
Sensor optimization Selection of sensor optimization MODE 0 - 99 In mode 0 - 99 the sensor optimization 1 and 2 and also the reset to the general parameter adjustment can be carried out. 0 - 99 1 1 - 01 27 1 - 99 Sensor optimization 0 Reset 0 - 01 Programming example sensor optimization ..........
Sensor optimization Mode listing 1 Sensor optimization Mode-no. 71 - 1 … 75 - 1 (continuation) Mode description Parameter ( = factory preset) Page 1 - 12 1 - 13 Multiple echo - reduction ................................................ - optimization ........................................... 0.00 … 1.25 V 0.00 … 1.25 V p. 44 1 - 14 1 - 15 1 - 16 1 - 17 False echo learn - indication, gain - learn distance ........................................ - delete learn cycle ..........................
Sensor optimization Information for sensor optimization If optimization is required, always compare the local conditions with the programmed parameters - if necessary correct or adapt. Basic test of Mode-no. Information Selection / measures Page 1 - 09 product type liquids or solids p. 42 1 - 10 vessel geometry vessel top flat or dished p. 42 1 - 10 1 - 11 solid define particle size / angle of repose p. 43 1 - 19 rate of level change define in cm / sec. p. 46 False echo tests Mode-no.
Limitation of the operating range Operating range MODE 1 - 05 … 1 - 08 The operating range can be limited in this mode by programming of - start of operating range and - end of operating range in case of failure. Note: In case of multiple reflections, a limited operating range may not be sufficient. The end of operating range should be programmed min. 10 % > than the max. vessel height. Echoes outside this limitation are ignored, e.g.
Adaption to the product Product type MODE 1 - 09 The product type together with the vessel geometry can generate different reflections and therefore multiple echoes. The echo amplification is reduced or adapted after the measuring window. The available product type can be selected in this mode. With this selection the data of the factory preset of mode 1 - 10 and 1 - 11 can be activated. Product type ................................
Adaption to the solid Solid MODE 1 - 10 and 1 - 11 Certain characteristics can cause different multiple echoes, e.g. - surface structure of the solid - type of filling / emptying - angle of repose - particle size of the solid. In case the factory preset - angle of repose 0° - particle size > 11 mm do not ensure a reliable suppression of the multiple echoes, they can be adapted. 0 m 1,1 Min. distance e.g. VEGASON 74 - 1, (at particle size < 5 mm) Real echo Angle of repose Multiple false echo 20 Max.
Reduction of gain Multiple false echo reduction Tanks with arched ceilings and therefore strong parabolic effects or silos with fine ground solids can cause strong multiple echoes. MODE 1 - 12 and 1 - 13 If the measures carried out in mode 1 - 09 … 11 are not sufficient, an additional reduction by OFFSET can be carried out. Real echo Multiple false echo Reduction range (Offset range) = 0.00 … 1.25 Practice values = 0.00 … 0.
Storage of a false echo profile False echo learn MODE 1 - 14 … 1 - 17 Construction details inside the vessel such as e.g. - weldment joints - edges - ladders - struts etc. create false echoes. In a learn cycle these echoes can be determined and stored on - location and - strength (amplitude). In a later measuring cycle the stored false echoes are gated out. Requirements - The strength (amplitude) of the useful echo must be larger in the interference position than that of the false echo.
Storage of a false echo profile Profile interpolation MODE 1 - 18 With the function "false echo learn" gaps can exist between the gated out false echoes. Build-up around struts, weldment joints etc. caused after the time cycle, generate additional false echoes. With the activation of the profile interpolation, gaps, smaller 3 m will be closed. Demonstration as comparison Additional false echoes by build-up Profile interpolation .......................................... off ..............
Limitation of the echo gain Max. gain MODE 1 - 20 … 1 - 22 By using the whole gain, the pulse-echo measuring system tries to detect an echo. This means that in empty vessels the gain can be bigger than required for the useful echo. This is why sound reflections are detected as false echoes. Therefore it is necessary to limit the control range of the gain. Note: - The limitation is adjustable from 0.03 V to 4.50 V, as optimization up to 4.95 V.
Supplementary optimizations Measuring window The measuring window must be switched off to achieve reliable measuring results in case of level changes > 10 cm / sec. or fluctuating level changes. MODE 1 - 23 Attention: When switching off the measuring window always the first large echo is detected within the working range. Programming example ..........................................
Supplementary optimizations Real distance As described before, all echoes within the measuring window are evaluated (useful and false echo). Therefore the measuring window can position on a false echo for different reasons. The cause is a false measurement. In these cases an actual value can be defined by correction of the distance, i.e. by positioning the measuring window correctly and updating the measurement. To avoid repetition it is useful that the respective optimizations are carried out, e.g.
Supplement Protocol of the sensor optimization Mode-no. Mode description Factory preset Working range - start ....................................................... - end 71 - 1 ................................... 72 - 1 ................................... 73 - 1 ................................... 74 - 1 ................................... 75 - 1 ................................... 0.00 m 6.00 m 12.00 m 12.00 m 24.00 m 36.00 m Product type - liquid / solid for VEGASON 72 ............................
Supplement Error codes Problems during measurement or faulty adjustments during the programming are indicated on the display with a fault signal. Example of a fault signal: 1 E3.04 Fault signals are made in the measured value mode with channel specific indication via the respective display. Fault in channel: line break / temperature sensor defect = coding of the sensor = error class = E = Error Acc.
VEGA Grieshaber KG Am Hohenstein 113 Postfach 11 42 D-77757 Schiltach Phone 0 78 36/50-0 Fax 0 78 36/50-201 Technical data subject to alterations 2.
