Operating instructions METRA ERW 700
Contents
1. 130 Page 10 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 2 19 plug in unit design Front view Side view METRA gt sense eataa 2 5 232 5 All dimensions in mm 8 2 Weight Standard Approx 1 kg 19 plug in unit design Approx 1 5 kg 8 3 Material Standard ABS 40 C to 80 C halogen free 19 plug in unit design Aluminum 9 Terminal Assignment Numbering of the terminals has been altered for the various hardware versions Hardware version HV 3 has 36 double row terminals connection to the display occurs via a western plug Terminals of basic device 19 20 21 22 23 24 25 26 27 28 28 30 31 32 33 34 38 36 NiL 1 2 3 4 5 T 8 9 10 11 12 13 14 15 16 17 18 Designation Function N L Neutral conductor 230 V AC Minus 24 V DC L L Phase 230 V AC Plus 24 V DC Disp 24V Western Display supply voltage Disp GND Western Display supply voltage Disp RxD Western Serial interface to the display receive Disp TxD Western Serial interface to the display transmit METRA Energie Messtechnik GmbH Page 11 of 45 Energy and2. neri nnne tenentes 38 DN II EM E 38 14 19 1 22 n eai 38 14 19 2 Datadog mode ioo edens 38 14193 Datadog period noie RR BRE oe 38 14 19 4 Data log integration period 38 Page 4 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 14 20 GOmMMUNICAtION ec eels ei rbd inet anc tr Ter Ent Cte tege 38 14 20 1 M Bus address idR Unit ut idees 38 14 20 2 M Bus a d Tale cien nente eee des 38 14 20 3 secondary 0 38 1420 4 022200 0 110 nennen nennen 38 14 20 5 Address RS232 Modbus ssssssssssseseseeeeeee nennen nennen rennen 38 14 20 6 Mode RS232 se iiu rnt entere nM efTe Ota eee 39 1420 7 gt RBS232 baud tate uicta one eere ttd uera Peer Pet dade 39 14 20 8 RS232 data bit a r e 39 14 20 97 65232 eter tene Urat eden ea ee te de eae 39 14 20 10 Counter factor E a etnies 39 14 21 GaN OE os eiecti ta deat e OV 39 14 21 1 PT100 calibration offset gradient 1 2 39 14 21 2 PT500 1000 calibration offset gradient 1 2 39 14 21 3 Current input c
3. 20 12 2 3 Display o parameters iet D 21 12 3 22 12 3 1 MEI 22 12 3 2 Switching on the meter enne enne nnne rennen nnn 22 12 3 3 Input examples Aer eh eee 23 13 Parameters ee teed rep die ir eel e eee Rene rac eee eda 26 Page 2 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 13 1 Parameter menu nnns 26 13 1 1 uc E 26 13 1 2 titer usati s Sieh bees e ce ee E T 26 14 Parameter DescrlptlOn eie dee aloe ean nt ae Ot a eee 27 14 1 aldara 27 14 1 1 Basic settee elect Ene ee elect eat Se aes 27 14 1 2 language a stie ee ED CERERI darn eines OUR ee 27 14 1 3 Additional Cotntets iet eir et de tan te rk 27 14 2 Type tuu ee Eoo Hbc En i teet ce haat 27 14 2 1 Serial rillmber c 10 retenir dette HR C e pare Eo e 27 14 2 2 LEANE Saunaa iier E RR teret 27 14 2 3 Texte Seer ote cited aeter ostro Soccorso DR eer ee 27 14 3 28 14 3 1 28 14 3 2 Lirie
4. 32 14 10 lt A 32 14 10 1 Density determination e 32 14 10 2 Density ete tree Mene iban Ilaec 32 14 10 3 Density measuring parameter 0 1 32 14 10 4 Dernsity default uci ente rebate 32 METRA Energie Messtechnik GmbH Page 3 of 45 Energy and Flow Computer ERW700 14 10 5 Density end value oerte tune mete erp eet re rni Dens 32 1440 6 Density start value ire Een certe 32 14 10 7 Parameter special fluid 32 14 10 8 Parameter special fluid 2 2 20 4040000 0000 33 14 10 9 Parameter special fluid dynamic 33 14 11 Special fluid concentration sssssssssssseseeeeeeenee eene nnne nnne 33 14 11 1 Meo Ed 33 situe s dee Er iiec oce imt 33 PETES gt Preset Value uter eU rr ritu Eder 33 1411 4 End Valug Lei eene Ret petu tote etes 33 14 14 5 ieee enact NOH 33 14 1456 Parameters ose P t Ree ecco 33 14 32 Differential pressure intere eR metet O 33 14 12 1 longo EE 33 14312 2 dp preset iiis one eR a iem eiii 34 14 12 32 SOP averaging soni RED eni eine ts 34 14 12 4 sdpioffSet st Ee ei mE e
5. Range 4 100 14 13 Pressure 14 13 1 Air pressure Air pressure for correcting the relative pressure sensors Range 0 500 1 000 1 200 bar 14 13 2 Correcting the pressure as function of the flow rate P PessureQKorr Density Qb Range 1 37 1 37 Page 34 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 14 13 3 Mode pressure 1 2 Operating mode for the pressure sensor The absolute pressure is corrected with 5096 of the dp for the cross probe Selection without 0 4 20 mA rel 0 4 20 mA abs cross probe preset 0 4 20 mA abs 0 4 20 mA abs QKorr 14 13 4 Preset pressure 1 2 Preset value for the pressure If the Absolute pressure mode is set to Preset all calculations are carried out with this preset value If a pressure sensor is connected this value is only used for calculation if a measuring fault has occurred Range 1 bar 200 bar 14 13 5 End value pressure 1 2 Pressure at which the pressure sensor supplies 20 mA Range 1 200 bar 14 13 6 Start value pressure 1 2 Pressure at which the pressure sensor supplies 0 4 mA Range 1 200 bar 14 13 7 Offset pressure 1 2 Offset value of the pressure measurement This way it is possible to compensate for hydrostatic pressure caused by the installation It is also possible to correct the air pressure of relative pressure sensors here The entered
6. iioi etre ette eie a e EROR EI rebote ate eee 44 METRA Energie Messtechnik GmbH Page 5 of 45 Energy and Flow Computer ERW700 1 Identification Manufacturer METRA Energie Messtechnik GmbH Am Neuen Rheinhafen 4 D 67346 Speyer Phone 49 0 6232 657 0 Fax 49 6232 657 200 Type of product Energy and flow computer Product name autarkon ERW 700 Version no ERW700 Hardware HV3 Software V1 32 and higher 2 Area of Application 2 1 Intended use ERW 700 is designed to measure energy and flow rates for gaseous vaporous and liquid media Various types of volume mass flow pressure temperature and density sensors can be connected The measured values and the set parameters are used according to generally acknowledged rules of technology to form the media data In order to further process the measured and calculated values it is possible to transfer the data via variably configurable standard interfaces 2 2 Warning signs At the time of delivery the energy and flow computer ERW 700 meets the highest technical specifications and is generally safe to operate It has been tested and left the factory in perfect working order However careless or incorrect usage of the energy and flow computer can result in hazardous situations Therefore always observe the warning signs 2 3 Operational safety ERW 700 must not be used in explosive areas The energy and flow computer ERW 700 meets the following safety criteria
7. Resolution 24 Bit Measuring rate approx 16 s Sensor break monitoring Sensor current PT100 ca 1 8 mA Sensor current PT500 1000 ca 0 7 mA Current Measuring range 0 0 22 mA Overload protection 24 V Error detection 3 6 mA according to Namur NE43 Measuring uncertainty 0 01 of MV 0 001 mA Temperature influence 0 0025 96 Resolution 24 Bit Measuring rate approx 16 s Frequency Frequency measurement 0 1 Hz 15 kHz Pulse Counting O 15 kHz Status Min measuring time can be set 0 1 s 1 s 2 s Measuring uncertainty 0 01 96 of MV Temperature influence 0 0025 96 K Resolution 0 001 96 of MV METRA Energie Messtechnik GmbH Page 7 of 45 Energy and Flow Computer ERW700 Switchable hardware filter Without 50 Hz for suppressing contact bounces Signals active Voltage Lo Us ca 1 9 2 2 V Voltage Hi Us ca 6 6 7 0 V Signals passive O C relay Namur Up ca 8 5 V Is ca 1 4 1 8 mA 5 Output 5 1 Output signal Current pulse switching output status measuring transducer supply Output data Output parameter Current Range 0 0 22 mA active Max load gt 500 Q 00 approx 12V Galvanic isolation among each other and to the basic device Error signals 3 5 mA and 22 mA according to NAMUR NE43 Accuracy 0 02 of MV 0 002 mA Temperature influence 0 005 96 Resolution 16 Bit Pulse Status Type Open collector pas
8. H Parameters 2808 Passwords Parameter list gt Application Scroll bar Navigation arrow Display Marker for additional levels Page 20 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 12 2 3 Display of parameters Display of the parameter Access 80 M 80 M Bus S Address 1 Display when editing the parameter DO M Bus 1 gt Address eo NO O Current password level Parameter group Parameter Actual value Required password level Actual value Position marking Value range METRA Energie Messtechnik GmbH Page 21 of 45 Energy and Flow Computer ERW700 12 3 Operation 12 3 1 Key functions Key symbol Name Key function Back e Press this key to jump one level higher in the level structure e lf aparameter has been altered press this key to save the displayed value and to exit programming mode The saved value is shown on the display Plus e Press this key to access the next higher level step e f you are in programming mode a numerical value increases by 1 or you move one place up a value list Minus e Press this key to access the next lower level step If you are in programming mode a numerical value decreases by 1 or you move one place down a value list Next e Press this key to jump one level lower in the
9. METRA Energie Messtechnik GmbH Page 33 of 45 Energy and Flow Computer ERW700 DT rad Measurement with 2 sensors square rooted EWZ211 Connected to a WZ200 transmitter DT31x 1 Connected to a DT31x1 transmitter DT31x 1 rad Connected to a DT31x1 transmitter square root 14 12 2 dp preset Preset value for the differential pressure Only for test purposes Range 3000 0 3000 0 mbar 14 12 3 dp averaging Factor for the average determination of the differential pressure Default 1 14 12 4 dp offset Use the dp offset to correct static offset of the differential pressure caused by the sensor or installation The set value is subtracted from the measured value Range 10 0 mbar 10 0 mbar 14 12 5 dp1 2 end value Maximum value end value of the dp sensor at 20 mA Range 1 0 mbar 10 000 0 mbar 14 126 dp1 2 start value Minimum value start value of the dp sensor at 0 4 mA Range 1 0 mbar 10 000 0 mbar 14 12 7 dp1 2 input Electrical assignment of the current input to the measured value Range I1 12 13 14 14 12 8 Balancing time factor Factor to control time between to balancing cycles Range 1 2 54 14 12 9 Balancing waiting time Lasting off the balancing time Range 1000 2500 10000 ms 14 12 10 Balancing limit Limit to control balancing Above that limit an auto balancing is not performed Range 1 5 500 14 12 11 Balancing averaging Averaging factor during auto balancing
10. re evaluation E39 DP2 General error for the differential See E38 pressure measurement channel 2 E41 Balancing Error during balancing EWZ21 1 7 dP 0 Q 0 Wrong wiring transmitter defect E42 conf concentration Error in setup for concentration Concentration 0 measurement E43 Concentration Error in concentration calculation Use preset values E50 Fault ModuleO Module defective If moduleO is a current input E51 Fault Module1 module3 4 E52 Fault Module2 then I3 14 0 mA E53 Fault Module3 E54 ModuleO unknown Basic device does not recognize the E55 Module1 unknown module E56 Module2 unknown Software not compatible E57 Module3 unknown E58 Module0 EEprom Module memory EEPROM defective or not installed E59 Slot 13 4 Current module recognized but Current 3 and 4 are set to 0 wrong slot MODULO mA E60 M IIn34 fault Communication with 11134 module See E59 faulty E61 M IOut34 fault Communication with lOut34 module faulty E62 M lOut56 fault Communication with lOut56 module faulty E63 M IOut34 config Incorrect configuration of the module Configuration is carried out according to the device parameters E64 M lOut56 config See E63 See E63 METRA Energie Messtechnik GmbH Page 45 of 45
11. 5 Temperature start value 1 2 Scaling of the temperature input in the current input mode Temperature at which the sensor supplies 0 4 mA Range 50 C 1000 C 14 15 Thresholds The thresholds are used to monitor individual actual values They can be used to control the digital inputs or to toggle between 2 counters 14 15 1 Threshold selection 1 2 Selection of the data for threshold monitoring Selection Off Density kg m QN 2 m3 h Differential pressure mbar QB1 m3 h QM 2 t h Abs pressure bar QN1 m3 h P2 kW Temperature 1 C QM t h Concentration Temperature 2 C P1 kW Diff Temperature C QB2 m3 h 14 15 2 Bottom threshold 1 2 Switching point for the threshold Ensure that the upper and lower value are different The hysteresis results from the difference Range 1e 37 1637 14 16 Digital outputs The digital outputs are universal digital outputs They can be used for status messages error limit value crawl flow rate as well as for pulse output of the counters 14 16 1 Digital output mode 1 3 7 Selection of the digital output operating mode Selection Off VB1 m3 Energy2 KWh Error VN1 m3 Low flow 1 Error inverted Mass1 t Low flow 1 inv Limit 1 value Energy1 KWh Low flow 2 Limit 1 value inverted VB2 m3 Low flow 2 inv Limit 2 value VN2 m3 Balancing Limit 2 value inverted Mass2 t 14 16 2 Pulse value digital ou
12. Energie Messtechnik GmbH reserves the right to make appropriate technical modifications without prior notice 3 System Design The energy and flow computer ERW 700 is a state of the art calculation unit ERW 700 has a graphical display which allows users to view all the relevant measuring and calculation values Using the menu guidance it is possible to alter the configuration and parameters via the respective keys Optional input and output cards are available to enhance device functioning The energy and flow computer consists of the following components e Calculation unit with integrated inputs and outputs basic module e LC display unit with 4 keys e Input cards optional e Output cards optional 4 Input 4 1 Measured data Electrical measured data Current pulse frequency resistance contact status Physical measured data Temperature pressure differential pressure volume flow mass flow density Special feature 2 independent 24 Bit AD converters for resistance temperature and current Measured data Input parameter Resistance Model PT 100 PT500 PT1000 4 wire measurement Measuring ranges 100 600 C PT100 100 600 C PT500 100 500 C 1000 100 300 C Overload protection 24 V Measuring uncertainty T 0 1 of MV 0 1 Measuring uncertainty AT 0 1 of MV 0 02 K Temperature influence T 0 0025 96 K Temperature influence AT 0 0010
13. Flow Computer ERW700 M Bus 1 M Bus interface M Bus 2 M Bus interface 3 Not occupied RS232 RxD 19 Serial interface Modbus receive RS232 TxD 20 Serial interface Modbus transmit RS232 GND 21 Serial interface Modbus ground OC 1 4 Digital output open collector OC 1 5 Digital output open collector OC 2 6 Digital output open collector OC 2 7 Digital output open collector 8 Digital output open collector OC 3 9 Digital output open collector lout 1 22 Current output galvanically isolated active lout 1 23 Current output galvanically isolated active lout 2 24 Current output galvanically isolated active lout 2 25 Current output galvanically isolated active DI1 26 Digital input pulse frequency status DI 1 27 Digital input pulse frequency status DI 2 28 Digital input pulse frequency status DI 2 29 Digital input pulse frequency status Ex 24 V 10 Auxiliary power for measuring head galvanically isolated 24 V Ex 24V 11 Auxiliary power for measuring head galvanically isolated 24 V MUS 1 12 Transducer supply 24 V 30 mA 11 13 Current input GND 14 Current input 1 ground MUS 2 30 Measuring transducer supply 24 V 30 mA 12 31 Current input GND 32 Current input 2 ground PT1 15 PT 100 500 1000 input supply PT1 16 PT 100 500 1000 input Sense PT1 17 PT 10
14. Sensors sssssssssssssssssseeeeeeeee nennen nennen nennen nnn 14 10 1 Ae Nom 14 10 2 PASSIVE Sensors uer t eet etc A AAN IN 14 10 3 Temperature sensors 2 244444444 nennen nnne 14 10 4 Active digital Sersors acce ce e cere Lern EL D ERR Ce 15 10 5 Passive digital sensors eiciia er anran ninani aeran AAAA aN AN nennen KANANE E nennen nnns 15 10 6 Ultraflow with Pulstransmitter EWZ 817 15 10 7 MERA DASA Xi aetna ives deve No 16 10 8 METRA DISA Xe ecole bole ied tomtom cnt 16 10 9 eel ru a tener a NND cree dd 17 WOO EW ZO TIS Y exem tute nde een ttc ani 18 Output Connection ia erie DR C eer o uere NR dte Tu ie EINE eee he 19 11 1 Current i DD ELS ILE 19 11 2 zie o E Re DU saul 19 11 3 Communication interfaces cccccceeeeeeeeeeeeceeeceaeeeseaeeeeeeeeeeaeeseaeeeseneeseaeeseaeeeseaeeseneeesaaes 19 12 Display and User Interface i e Rete Ro EE e iet uin 20 12 1 General information irte roe te ERR RR RETO EE EO E PORE hua 20 12 2 EG CIS DIA siete 20 12 2 1 Display of measured values esie AAEE 20 12 2 2 Display of parameter
15. an error occurs Depending on the setting the current output retains its value or changes the set constant current This can be used for remote transmission of the error message if supported by the evaluation device Selection Without Preset 0 mA equivalent to min or line break 3 5 mA 4 mA equivalent to min 20 mA equivalent to max 22 mA 14 17 7 Current output level 1 2 6 Selection of the current output level Selection 0 20 mA 4 20 mA 14 18 Clock 14 18 1 Date Display and setting of the date Range 01 01 00 31 12 99 METRA Energie Messtechnik GmbH Page 37 of 45 Energy and Flow Computer ERW700 14 18 2 Time Display and setting of the time Range 00 00 00 23 59 59 14 18 3 Quartz correction Correction of the real time clock Range 0 999005 1 00019 14 19 Tariff 14 19 1 Fixed 1 2 Enter the day on which the counters are to be saved Range 01 01 31 12 14 19 2 Data log mode Operating mode of the data logger It is determined which data is to be saved Only the primary counters Cnt 1 the primary counters and the flow values Cnt Flow 1 2 primary and secondary counters Cnt 1 2 or the primary and secondary counters and flow values Cnt Flow 1 2 The setting influences the number of saving intervals Selection Cnt 1 Cnt Flow 1 Cnt 1 2 Cnt Flow 1 2 14 19 3 Data log period Time interval during which the values defined under the dat
16. digital input for sensors with a pulse DI1 012 Range 11 12 011 DI2 14 4 3 Primary nominal flow rate The nominal flow rate determines the measuring range maximum value of the connected volume mass sensor It is the 100 point for calculating the crawl flow shut off If the primary sensor is a throttle device enter the mass nominal flow rate qn in kg h Range 0 10 m3 h 169 m3 h or kg h 14 4 4 Primary pulse value If a pulse pick up volume or mass is selected as the volume sensor the pulse value is set here Range 0 10 pulse m3 1e8 pulse m3 or pulse kg 14 4 5 Leak flow mode Set whether the quantities below the leak flow rate are counted or not In With mode all pulses are counted and converted even if the actual value of the flow rate is below the leak flow rate In Without mode pulses are not counted below the leak flow rate Selection With Without 14 4 6 Primary leak flow Set the crawl flow shut off in 96 of the nominal flow rate Range 0 10 Page 28 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 14 4 7 Place of installation In Energy mode the volume mass sensors can be installed in the supply and return In Flow meter mode no energy the Warm place of installation is automatically set Selection Cold Warm 14 4 8 Minimum measuring time Set the minimum measuring time for the frequency measurement This way it is possible to ad
17. e Safety requirements in accordance with EN 61010 1 2001 e Interference stability in accordance with EN 61000 4 2 EN 61000 4 3 EN 61000 4 4 EN 61000 4 5 EN 61000 4 6 EN 61000 4 8 e Interference emit in accordance with EN 61326 Class A e Heat meters in accordance with EN 1434 4 Class e Degree of protection provided by the enclosure IP 65 in accordance with EN 60529 Parameterization data is saved in the EEPROM during a power failure 2 4 Personnel for installation start up and operation e Only trained personnel who have received authorization from the system owner allowed to carry out assembly electrical installation start up maintenance and operation They should have read and understood the operating instructions and always follow the information contained therein Incorrect installation and start up can result in significant measuring errors or damage to the device e Always adhere to national regulations e Danger of death if the power supply is connected incorrectly 2 5 Factory setting The energy and flow computer ERW 700 is supplied with a standard configuration or set to the operating conditions specified in the order Page 6 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 Refer to the enclosed configuration data sheet for the set values Incorrect changes to the parameters can result in measuring errors 2 6 Technical modifications In view of technical developments METRA
18. kg m 14 10 5 Density end value Maximum value end value of the density sensor at 20 mA Range 0 0 kg m3 10 000 0 kg m3 14 10 6 Density start value Minimum value start value of the density sensor at 0 4 mA Range 0 0 kg m3 10 000 0 kg m3 14 10 7 Parameter special fluid density Polynomial coefficients for calculating the density spec volume of special fluid SO1 SO2 These are also used for linearization during density measurement Density kg m3 SO1 SO2 T Density SO1 kg m density at 0 C Density SO2 kg m3K linear density development T C temperature SO1 density value and SO2 0 are set for calculating with constant density With Bopp amp Reuther density meter Density SO1 KBO Density SO2 KB1 1074 Density SO3 KB2 10 8 Parameters for temperature correction from V1 25 Density KBTO kg m3 K Density KBT1 1 K Density TK C Page 32 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 Range 1 37 1 37 14 10 8 Parameter special fluid enthalpy Polynomial coefficients for calculating the enthalpy of special fluid SO1 SO2 Enthalpy KWh kg SO1 T SO2 T Enthalpy SO1 KWh kgK specific thermal capacity Enthalpy SO2 KWh kgK gradient of the specific thermal capacity T C temperature Range 1 37 1 37 14 10 9 Parameter special fluid dynamic viscosity Polynomial coefficients for calculatin
19. m3 209 833 m3 h 310 043 mbar 1xMinus 1xMinus ERW700 ERW700 1 Energy 1 5 Temperature 1 0012345678 5 kWh 72 58 C 2 Volume 1 6 Temperature 2 0209833823 4 m3 15 34 C METRA Energie Messtechnik GmbH Page 23 of 45 Energy and Flow Computer ERW700 Example Password Level1 enter 0009 Current display 1xNext 1xNext ERW700 0 Passwords 0 Passwords Energy 1 Password Levell Password Levell 001234567 5 kWh KEEK 00 Volume 1 A 020983382 4 m3 Access 0 05 2409999 1 2xNext 1 1xPlus Menu 0 Passwords 0 Passwords gt Information Password levell Password levell Logbook 000 Parameter A A 0 9999 0 9999 2xPlus 1xPlus 1xMinus Menu 0 Passwords 0 Passwords Information Password levell Password levell Logbook 0009 gt Parameter A A 9999 On 2229999 1 1 1 Parameters 0 Passwords 1 Passwords gt Passwords Password levell Password levell Application Level free Type label A Display Orca 9999 On 2 9999 1 1xPlus 5xBack Parameters 0 Passwords ERW700 gt Password levell Password levell Energy 1 Password level2 00 001234567 5 kWh Password level3 A Volume 1 Password level4 Onus 9999 020983382 4 m3 Finished Page 24 of 45 METRA Energie Messtec
20. n rmber Q TE ain EE RP HERE Ere 28 14 3 3 Decimal pace t uii a EP EUER TUR e eed aan 28 14 3 4 28 14 4 Primary than Sitters i ouo oie e o 28 14 4 1 Sensor selectiols po Ere ecce cities EPI 28 14 4 2 jo 28 14 4 3 Primary nominal flow rate 400 28 14 4 4 Primary pulse valu e o OE E PER EUER Re EATUR 28 14 4 5 Leaktlowimode ni pti E PED ben PIED 28 14 4 6 Primary leak WOW erriertan einiaid raitea aiiai eile dert dnb ince eene deter 28 14 4 7 Place 2 422442 nennen nnne nennen nnne 29 14 4 8 Minimum measuring 8 44 101000 29 14 5 elm 29 14 5 1 ieri 29 14 5 2 Flow coefficient 29 14 5 3 Flow rate 29 14 5 4 Pipe diameter enit tin ie edi eee eb 29 14 5 5 Bore CaM tel 29 14 5 6 29 14 5 7 TO DOG c DR 29 14 6 29 14 6 1 LiniGarizZatlQn 2 nci EE P OE CLIE HA HERE ned 29 14
21. 0 19200 14 20 8 RS232 data bit Number of data bits Selection 7 bits 8 bits 14 20 9 RS232 parity Type of parity Selection NO EVEN ODD 14 20 10 Counter factor Counter factor for the transfer of counter readings via M Bus or Modbus The counter readings are transferred in LONG format 2732 The smallest counter step is equivalent to the counter factor The basic units for internal calculation kg Wh A decade overflow of the displayed counters occurs for each 1072 of the basic unit A decade overflow of the transferred counters occurs for each 10 of the counter factor Selection 0 0001 m3 t kWh 10 0 1 I kg Wh 10 100 mI mg mWh 10 0 001 m3 t kWh 1 I kg Wh 1000 ml mg mWh 0 01 I kg Wh 100 10 ml mg mWh 100 14 21 Calibration 14 21 1 100 calibration offset gradient 1 2 Calibration values for the PT100 input Range According to parameter 14 21 2 PT500 1000 calibration offset gradient 1 2 Calibration values for the PT500 1000 input Range According to parameter 14 21 3 Current input calibration offset gradient 1 2 6 Calibration values for the current input Range According to parameter 14 21 4 Current output calibration offset gradient 1 2 6 Calibration values for the current output Range According to parameter 14 22 Counters 14 22 4 Clear counters All the counters are reset to O METRA Energie Messtechnik GmbH Page 39 of 45 Energy and Flow Com
22. 0 500 1000 input Sense PT1 18 PT 100 500 1000 input supply Page 12 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 PT2 33 PT 100 500 1000 input supply PT2 34 PT 100 500 1000 input Sense PT2 35 PT 100 500 1000 input Sense PT2 36 PT 100 500 1000 input supply Terminal assignment display Connection between basic device and Display is Western RJ10 on both ends Modul Display V3 Terminal assignment modules Module Designation Function OC 1 1 Digital output open collector OC 1 2 Digital output open collector OC 2 3 Digital output open collector OC 2 4 Digital output open collector lout 1 5 Current output galvanically isolated active lout 1 6 Current output galvanically isolated active lout 2 7 Current output galvanically isolated active lout 2 8 Current output galvanically isolated active Module I IN Designation Function MUS 3 1 Measuring transducer supply 24 V 30 mA I3 2 Current input GND 3 Current input 3 ground MUS 4 4 Measuring transducer supply 24 V 30 mA l4 5 Current input GND 6 Current input 4 ground METRA Energie Messtechnik GmbH Page 13 of 45 Energy and Flow Computer ERW700 10 Connection of External Sensors 10 1 Active sensors Conne
23. 6 2 Q Re Lin paramoeter T 2 e etd a erp 30 14 6 3 Ex Lirn patrarieter 5o c eec eet cea ud De 30 14 7 Secondary transmitter i caeci recepit ten eH RO 30 14 7 1 Secondary transmitter eene 30 14 7 2 Secondary e eirca cbe dett n rt on bm ee bebe 30 14 7 8 Secondary nominal flow rate enne 30 14 7 4 Secondary p lse valtie oer cnr et c e PCR UR 30 14 7 5 Secondary leak flow tate ea re LR e UHR E BR EEG 30 14 8 c E 30 14 8 1 E 30 14 8 2 Current input level 30 14 8 3 level titt iater rtt rendus 30 14 9 lale TE 31 14 9 1 ur 31 14 9 2 Nominal El 31 14 9 3 Reference 31 14 9 4 Reference 31 14 9 5 Gritical DressUte tete enr erat re R P Rice Ru Fe 31 14 9 6 Critical temperature ssesssssssssseseseseeneeee nennen 31 14 9 7 Isentropic 31 14 9 8 CompresSibility 5 1 2 ice tte e uta eite rte dnc per 32 14 9 9 Saturated steam 2
24. Flow rates are set to 0 primary sensor E27 Conf SecSensor Error in the configuration of the See E26 secondary sensor Page 44 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 E29 Conf Density 1 Error in the configuration of the See E14 density measurement E30 Reference density Calculated reference density from Fixed substitute value of reference pressure temperature 0 1 293 kg m3 is used for the kg m3 calculation E31 CRC EEprom Memory EEPROM defective or not installed E32 DP Measured data outside the See E25 measuring range Wiring error Differential pressure sensor is selected but not connected or the current is less than 3 6mA E33 Config Density 2 Error in the configuration of the Preset value is used for density measurement calculations E34 Density 2 Calculated density 2 is 0 kg m3 See E14 E35 Primary sensor Mass Volume flow is set to 4 20mA See E26 for the primary sensor and the current falls below 3 6 mA E36 Secondary sensor Mass Volume flow is set to 4 20mA See E26 for the secondary sensor and the current falls below 3 6 mA E37 Saturated steam Measured values are below the Saturated steam parameters saturated steam line are used for the further calculation E38 DP1 General error for the differential If necessary switch to pressure measurement channel 1 second sensor otherwise no
25. ME TRA mm Energie Messtechnik i Mitglied der Bopp amp Reuther Messtechnik Gruppe Energy and Flow Computer ERW 700 User Manual METRA Energie Messtechnik GmbH Dimensions weights and other technical data A GB ERW700 00 Rev B Am Neuen Rheinhafen 4 D 67346 Speyer are subject to changes Phone 49 6232 657 0 Fax 49 6232 657 200 Internet http www metra emt de e mail info metra emt de Printed 07 08 2013 Energy and Flow Computer ERW700 Table of Contents T ildentificallonis oce did 6 2 eite tede bet i d eheu 6 2 1 Intended use een E medietas 6 2 2 Warning 6 2 3 metes 6 2 4 Personnel for installation start up 6 2 5 Factory settings ree GR GR OR P RR DI ERE RUE 6 2 6 Technical modifications eese nnne nennen nnne nnne nnn 7 9 DOSIQM esses io terme tb eun fodere ated uiia deii diete 7 A 7 4 1 eR eun RR 7 E Emu EE 8 5 1 Output signal eres hie eet e eee dy Pe 8 5 2 Tran
26. a log mode are saved Selection 15 min 30 min 1 hour 1 day 1 week 1 month 14 19 4 Data log integration period Integration period for determining the min and max values If the setting is 0 no average value is generated the min max of each value is tested Range 0 15 255 14 20 Communication Additional and extensive information about M Bus and Modbus is available separately 14 20 1 M Bus address Primary address for reading via the M Bus protocol Range 0 1 250 14 20 2 M Bus baud rate Baud rate for the M Bus interface The baud rate can be altered without a password Selection 300 600 1200 2400 4800 9600 14 20 3 secondary address Secondary address for reading via the M Bus protocol Range 00000000 99999999 see M Bus description 14 20 4 M Bus manufacturer Manufacturer code on the M Bus METRA MET 8372 Bopp amp Reuther BUR 2738p Selection Unknown METRA B amp R 14 20 5 Address RS232 Modbus Primary address for reading via the Modbus protocol Range 0 1 250 Page 38 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 14 20 6 Mode RS232 Selection of the protocol Set to M Bus the parameters for RS232 are ignored The M Bus parameters are used Selection AUS ASCII RTU M Bus 14 20 7 5232 baud rate Baud rate for the RS232 interface The baud rate can be altered without a password Selection 2400 4800 960
27. age 19 of 45 Energy and Flow Computer ERW700 12 Display and User Interface 12 1 General information The energy and flow computer ERW 700 is supplied with a factory default setting Optionally it can be set to the operating conditions specified in the order See the enclosed configuration data sheet for the set values The energy and flow computer can be configured and operated in two different ways 1 Programming via Modbus interface 2 On site operation via membrane keys 12 2 LC display The graphical LC display allows users to view all the parameters counters as well as input and output data Display selection is carried out via keys The backlight of the display is activated via the respective key The backlight is set to go off 10 minutes after the last key press the device then switches to the standard display 12 2 1 Display of measured values 0004711 987 kwh _ 2 Volume 1 0123456 789 m3 Header The display alternates between the programmable TAG number and the error messages Line number name The name of the displayed value and also the line number are shown to facilitate orientation The line number is hidden after approx 5 s Value unit The value with decimal places and the unit are displayed The number of decimal places and the unit are parameterizable The decimal places of the counters can be additionally highlighted by a frame 12 2 2 Display of parameter navigation
28. alibration offset gradient 1 2 6 39 14 21 4 Current output calibration offset gradient 1 2 6 39 14522 5 EE 39 14 22 1 GIS AI COUNTCRS rs 39 14 22 22 lt 40 14523 4 IS PME 40 14 23 1 PASSWORD LA occ 40 15 Information 41 15 1 Time recording s rU ER EPOR 41 15 1 1 BM 41 15 1 2 Date eee t rere i eie ii ou eed de dete e a deb cea 41 15 1 3 Operating NOUNS shied Dente Dee decia ne eee 41 15 1 4 Measuring hOoUurs tere dece ettet eee Bede eene e 41 15 1 5 Be nr 41 15 1 6 Saturated steam hours sse eene enne nennen entrent tenente 41 15 1 7 Iioc Pe 41 15 2 Calculation Unit a Tee eda ee denen ii 41 15 3 PLE 41 16 42 17 Energy and Flow Computer Connection 43 18 Certificates and Approvals sssssssssssssssesseseeeee enne 43 TS AONd o 44 19 1 Error messages
29. apt the measuring time to the behavior of pulse pick ups which do not output equidistant pulses Ideal values for Kamstrup 1000 ms Hydrometer 2000 ms Range 100 lt 2500 ms 14 5 Orifice 14 5 1 Orifice type Selection of the throttle Selection Cross probe Orifice plate D D 2 Venturi nozzle Orifice plate corner ISA nozzle Venturi tube Orifice plate flange Quarter circle nozzle Dynamic probe 14 5 2 Flow coefficient The flow coefficient determines the measuring range for autarkon sensors cross probe Range 1 00 m3 h 10000 00 m3 h 14 5 3 Flow rate correction Determined flow rate correction factor deviation from the standard If the throttle device is a venturi tube it is possible to enter the flow rate coefficient here Characteristic line corrections are carried out via linearization Default 1 000 Range 0 5000 1 000 2 000 14 5 4 Pipe diameter Internal diameter of the supply pipe Range 10 1500 mm 14 5 5 Bore diameter Internal diameter of the orifice bore Range 3 1500 mm 14 5 6 TC pipe Temperature coefficient of the supply pipe e g tc V2A 16 E 6 1 K Range 1 100 E 6 1 K 14 5 7 TC bore Temperature coefficient of the bore Range 1 100 E 6 1 K 14 6 Linearization 14 6 1 Linearization Selection of the characteristic line correction of the flow sensor or throttle device Selection Without Q Re Re Ex METRA Energie Messtechnik GmbH Page 29 of 45 Energy and F
30. ction of sensors which have an individual power supply and an active output Terminal alternative Terminal X2 13 31 X3 14 32 10 2 Passive sensors Connection of sensors without a power supply 2 wire sensor Terminal alternative Terminal X1 12 30 X2 13 31 10 3 Temperature sensors Connection of temperature sensors PT100 PT500 PT1000 The terminals X1 X2 and X3 X4 must be bridged when connecting 2 wire sensors The input has to be configured via the software Terminal alternative Terminal X1 15 33 2 16 34 X3 17 35 4 18 36 Page 14 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 10 4 Active digital sensors Connection of digital sensors which provide a voltage signal The input has to be configured via the software gt Terminal alternative Terminal 1 26 28 2 27 29 10 5 Passive digital sensors Connection of digital sensors with passive output relay open collector NAMUR The input has to be configured via the software Terminal alternative Terminal 1 26 28 2 27 29 10 6 Ultraflow with Pulstransmitter EWZ 817 Connection of an Ultraflow with pulse transmitter The wiring diagram between flow transmitter and pulse transmitter as w
31. d the min max values of the flow data can be saved at a set interval The interval and the integration time average value can be set The intervals are 1 4 h Yeh 1 h 1 day 1 week and 1 month The integration time can be selected between 0 and 255 minutes The calculation values are determined via the integration period and compared to the saved min max values at the end of the integration period If the determined value is outside the saved values the new value is accepted as the min max value The non averaged values are processed for the integration period O Average values are not saved as these can be determined via the counter readings Counter reading of the current period counter reading of the preceding period period duration average value Depending on the setting between 150 and 800 periods are saved The end of the period is always saved as the time and date Error memory The error memory displays the last 100 error messages with error number time and date Parameter memory The parameter memory records the last 100 changes with date time and the old value Min Max memory Page 42 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 In order to test device functions and application the min max of the primary measured values pressure temperature etc are monitored and saved There is no average value each individual measured value is considered The values are saved per
32. day for 31 days and per month for 12 months In particular this is meant to detect and document overload situations 17 Energy and Flow Computer Connection Power supply Supply voltage 180 V 264 V AC 18 V 36 V DC optional Cable gland 1x M20 3x M16 and 5x M12 Cable diameter 3 5 to 12 mm Terminals Spring cage terminals Wire cross section 0 5 1 5 mm rigid and flexible Modules 0 4 0 8 mm rigid and flexible Cable type We recommend Li2YY twisted pair without shielding Cable length For sensors in accordance with EC Directive 2004 22 EC Annex 004 up to 100 m For output signals and other installations up to 500 m depends on the laying and ambient conditions We recommend the use of twisted pair cables No shielded cable is required Should there be shielded cable because the transmitter manufacturer recommends it the screen should not be connected on ERW 700 Example Temperature sensors 4 adrig twisted pair z B LiYY TP 4 0 5 mm Druckgeber 2 adrig twisted pair z B LiYY TP 2 0 5 mm DT31x up to 45 m 6 adrig twisted pair shielded z B LiYCY 6 0 5 mm 18 Certificates and Approvals DIN EN 9001 certified production Type examination in accordance with EC Directive 2004 22 EC Annex MI 004 Certificate DE 08 MIO004 PTBO004 Type examination in accordance with Eichordnung EO 22 as part of Cold meters and combined Heat Cold meters PTB Z 22 75 09 02 CE Mark The measuring system
33. e kg 14 7 5 Secondary leak flow rate Set the leak flow shut off in 96 of the nominal flow rate Range 0 10 14 8 Inputs 14 8 1 PT inputs Selection of the temperature sensor type Selection PT100 PT500 PT1000 14 8 2 Current input level Selection of the current input level Selection 0 20mA 4 20 mA 14 8 3 Digital input level Selection of the digital input level U Lo is for voltage signals with a low level e g 5 V U Hi is for voltage signals with a high level e g 24 V and O C is for passive signals e g Open Collector NAMUR relay For suppressing noise or contact bounce a low pass filter about 50 Hz can be enabled Page 30 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 Selection U Lo U Hi O C U Lo low pass U Hi low pass O C low pass 14 9 Fluid 14 9 1 Fluid Selection of the fluid The density enthalpy and dynamic viscosity for standard media are calculated according to internally defined methods The polynomial coefficient for the relevant measuring range has to be determined and entered separately for special media Saturated steam can be pressure P or temperature T controlled Selection Water Steam Special fluid Saturated steam T Air Gas Saturated steam P Air Gas ReKw 14 9 2 Nominal density The standard density T 273 15 K and P 1 01325 bar is entered here for air or other gaseous media Water and steam are calculated internally with the re
34. ell as the connection of power supply can be read in the Ulraflow manual Attention The Ultraflow pulstransmitter as delivered by Kamstrup can t be used in that wiring scheme The optic couplers are changed at METRA Ultraflow ERW 700 configuration Digital Inputs Level DI 1 012 An alternative wiring diagram that can be used with the original pulse transmitter The disadvantage is a reduced EMC level Ultraflow ERW 700 configuration Digital Inputs Level DI 1 ULo 012 METRA Energie Messtechnik GmbH Page 15 of 45 Energy and Flow Computer ERW700 10 7 METRA DT31x Connection of DT 31x with integrated absolute pressure sensor DT 31x 10 8 METRA DT31x 1 Connection of DT 31x 1 with integrated absolute pressure and temperature sensor DT31x 1 ERW 700 Page 16 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 10 9 EWZ 211 7 Connection of a WZ 200 Transmitter of series EWZ 210 and EWZ 211 428 D 1 t 1 1 hot PT1000 grey pink Ed cold PT1000 white green A Attention For controlling of the balancing valve and to measure a current of up to 54 mA a special version of ERW700 is needed For dp signal input 11 terminal 13 14 can be used only Inside the junction box the pink wire has to be
35. erical digits METRA Energie Messtechnik GmbH Page 27 of 45 Energy and Flow Computer ERW700 14 3 Display The display can be freely configured within the broad limits All the measuring values and relevant calculation values can be displayed The format and unit can be selected Several values can be compiled as pages it is then possible to leaf through these pages 14 3 1 Counter frame A frame can be shown to specifically indicate the decimal places for counters PTB and MID regulation 123456 789 kWh Selection Yes 14 3 2 Line number 0 n List value assignment to a line in the display If 0 is entered the value is not displayed If the same line number is assigned to several values they are displayed alternately 14 3 3 Decimal place 1 n Selection of the display format 14 3 4 Units 1 n Selection of the displayed unit The selected unit does not influence the calculations The internal calculation is always in basic units Conversion only takes place for display purposes 14 4 Primary transmitter 14 4 1 Sensor selection Selection of the volume mass sensor Selection Throttle dp 0 4 20mA Mass 0 4 20mA Mass pulse Volume 0 4 20mA Volume pulse 14 4 2 Input Electrical assignment of the sensor to the input If a throttle is selected as the sensor assignment takes place via the differential pressure input Select a current input for volume mass sensors with a current signal I1 14 and a
36. fulfils the legal requirements of the EC Directives 2004 108 EG and 2006 95 EC including all published revisions or amendments to date METRA Energie Messtechnik GmbH confirms successful device testing and affixing of the CE Mark METRA Energie Messtechnik GmbH Page 43 of 45 Energy and Flow Computer ERW700 19 Appendix 19 1 Error messages After eliminating the cause of the error the error messages are automatically deleted Only pulse errors have to be acknowledged The last 100 error messages are saved Code Designation Cause Effect E01 Power failure No power supply defective fuse No functions Display is black E02 AD converter AD converter for current measuring Measured value fails or defective calculation is carried out with preset values Error can only be eliminated by the manufacturer E03 AD converter PT AD converter for temperature Measured value fails or measuring defective calculation is carried out with preset values Error can only be eliminated by the manufacturer E04 AD I1 Measured data outside the Measured value fails or E05 AD I2 measuring range calculation is carried out with E06 AD I3 Wiring error preset values E07 AD I4 E08 AD PT1 Measured data outside the Measured value fails or E09 AD PT2 measuring range calculation is carried out with Wiring error preset values E10 Temperature 1 Measured data outside the Measured value fails
37. g the dynamic viscosity of special fluid SO1 SO3 dyn viscosity Ns m3 1 501 SO2 T 503 T dyn viscosity SO1 m Ns dyn viscosity 502 m2 NsK dyn viscosity SO3 m NsK T C temperature Range 1 37 1 37 14 11 Special fluid concentration Available from software version V1 30 14 11 1 Mode Control of the calculation of concentration If set to preset the calculation is done with a fixed value If set to current input the concentration has to be supplied by an external device Auswahl without preset 0 4 20mA 14 11 2 Input Electrical assignment of the current input to the measured value Bereich I1 12 18 14 14 11 3 Preset value Preset const value for the concentration Bereich 0 100 14 11 4 End Value Maximum value end value of the concentration at 20 mA Bereich 0 100 14 11 5 Start value Minimum value start value of the concentration at 0 4 mA Bereich 0 100 14 11 6 Parameters Additional polynom coefficients for calculation oft he concentration Density SO3 Density SO4 Enthalpie SO3 Enthalpie SO4 dyn Viskosity SO4 dyn Viskosity SO5 Bereich 1e37 1 37 14 12 Differential pressure 14 12 1 mode Operating mode for the differential pressure sensor Selection Preset Calculation with preset value only for test purposes ST Measurement with 1 sensor ST rad Measurement with 1 sensor square rooted DT Measurement with 2 sensors
38. hnik GmbH Energy and Flow Computer ERW 700 Example Changing the date from 28 6 07 to 18 07 07 3xNext 1 Clock Date 18 06 07 A 01 01 00 31 12 99 1xPlus 1 Clock Date 18 07 07 A 01 01 00 31 12 99 1 1 Clock Date 18 07 07 Access 1 6xBack ERW700 Energy 1 001234567 5 kWh Volume 1 020983382 4 m3 Current display 1xNext ERW700 Parameter Energy 1 Temperature 001234567 5 kWh Limit values Volume 1 Outputs 020983382 4 m3 Clock 1 2xNext 1 Clock gt Information gt Date Logbook Time Parameter Quartz corr 2xMinus 1 Menu 1 Clock Information Date Logbook 28 06 07 gt Parameter Access 1 1 1 Parameters 1 Clock gt Passwords Date Application 28 06 07 Type plate A Display 01 201 00 31 12 99 13xMinus 1xMinus Parameters 1 Clock Temperature Date Limit values 18 06 07 Outputs A gt Clock 01 00 30 3 Te 122 99 Finished METRA Energie Messtechnik GmbH Page 25 of 45 Energy and Flow Computer ERW700 13 Parameters 13 1 Parameter menu structure The operating menu is arranged as a tree structure To illus
39. ies are designed as ring buffers If the memory is full the oldest value is overwritten by the new one All the memories can be either manually read at the device or via the Modbus interface In order to optimize the memory there is an operating mode which defines which data should be saved The setting applies to all the memories Operating Mode Function Cnt 1 All the counters with index 1 are saved Cnt Flow 1 All the counters and flow values capacity volume mass standard flow with index 1 are saved Cnt 1 2 All the counters with index 1 and 2 are saved Cnt Flow1 2 All the counters and the flow values with index 1 and 2 are saved Fixed date 2 fixed dates month day time midnight can be specified At the programmed time changeover from the proceeding day all the current counters and the date end of the proceeding day are copied into the fixed date memory They remain available until the fixed date re occurs this is usually one year later Example 1 6 is set saving then takes place on 31 5 at 23 59 All 8 counters are saved irrespective of the operating mode Switching is not advantageous for the memory Monthly values At the end of each month changeover to the next month all the current counters and the date end of the month are saved In operating mode C 1 30 counter sets are saved in operating mode C 1 2 16 counter sets are saved Period memory The counters an
40. ire eumd fete rdiet 34 Wazo dpl 2 end value tret EB er EIN TIE Kein 34 14 12 6 dpl 2start value eene ORE EROR 34 182120277 iei tede EP tee irte ivl debe 34 14 12 8 Balancing time factor eere nere 34 14 12 9 Balancing waiting time esseseseeeeeennenn nennen nnne 34 14 12 10 Balancing nit mr Pena p edipi 34 14 12 11 Balancing 34 WAS CUI Pe 34 14 13 1 22 m 34 14413 2 PressureQKOIT ende cie ere c ne ee ee horde eee euer 34 14 13 3 Mode pressure 1 2 35 14 13 4 Preset pressure 1 2 000 ne nnne rnnt 35 14 13 5 End value pressure 1 2 40 rennen 35 14 13 6 Start value pressure 1 2 nennen nennen 35 14 13 7 Offset pressure 1 ui 2 eevee a dr pente 35 14 13 8 Input pressure ee eren eene ehe n deeper 35 14 14 Temperature oerte ener recepere eoi e tec ec eue agni 35 14 14 1 Temperature mode 1 2 35 14 14 2 Preset temperature T 2 ceder nr e EDT HS RR Re op EDU Heg erg 35 14 1453 Temperature Input eer oleo 35 14 144 Temperature end value 1 2 36 14 14 5 Temperature
41. level structure e Once you have reached the desired level press the key again to activate programming mode and to alter the set values e With parameters which represent a numerical value press this key to jump to the next decimal point Press and simultaneously to acknowledge error messages An entry can be cancelled in programming mode e Press Back and Next simultaneously to initiate an calibration cycle For transmitters with solonoid valves M e ML 12 3 2 Switching on the meter The meter does not have an on off switch Basic initialization is carried out once the meter is connected to the power supply The following information is displayed METRA METROKON Energie Messtechnik c 2007 METRA GmbH LCD Module V1 13 SW Version 122 Status Power checksum 4949h The meter subsequently jumps to the set application mode Page 22 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 12 3 3 Input examples Example Calling display values The data shown below is only an example Depending on the configuration more or fewer values can be displayed and the sequence may also vary Current display 1xMinus 1xMinus ERW700 ERW700 ERW700 Energy 1 3 Power 1 7 Pressure 1 0012345678 5 kWh 123 50 kW 12 005 bar Volume 1 4 Vol flow rate 1 8 Dp 0209833823 4
42. low Computer ERW700 14 6 2 Q Re Lin parameter 1 7 The parameters are used for linearizing the flow rate characteristic line The flow rate coefficient is corrected depending on the Reynolds number or the flow rate Wet calibration has to be carried out to determine the parameters Range According to parameter 14 6 3 Ex Lin parameter This parameter is used for linearizing the expansion number The expansion number is corrected depending on the pressure ratio Wet calibration has to be carried out to determine the parameter Range 169 1e9 14 7 Secondary transmitter 14 7 1 Secondary transmitter selection Selection of the volume mass sensor in the second measuring circuit Selection Without Mass 0 4 20mA Mass pulse Volume 0 4 20 Volume pulse 14 7 2 Secondary input Electrical assignment of the sensor to the input Select a current input for volume mass sensors with current signal I1 14 and a digital input for sensors with a pulse DI1 DI2 Selection 11 12 13 14 011 DI2 14 7 3 Secondary nominal flow rate The nominal flow rate determines the measuring range maximum value of the connected volume mass sensor It is the 100 point for calculating the crawl flow shut off Range 0 10 m3 h 1e9 m3 h or kg h 14 7 4 Secondary pulse value If a pulse pick up volume or mass is selected as the volume sensor the pulse value is set here Range 0 10 pulse m3 1e8 pulse m3 or puls
43. n the cabinet door e 19 plug in unit design 7 2 Ambient conditions 7 2 4 Ambient temperature 0 C to 55 C 7 2 2 Storage temperature 30 C to 70 C 7 2 3 Climate class In accordance with EN 1434 Class C 7 2 4 Mechanical class In accordance with EC Directive 2004 22 EC Class M1 7 2 5 Degree of protection IP65 529 EN 60529 wall installation in plastic housing Split mounting Calculator IP65 with closed cover Display IP20 IP20 19 cassette 7 2 6 Electromagnetic compatibility Interference emit EN 61326 Class Interference stability Power failure 20 ms no influence Electromagnetic fields 10 V m 80 2700 MHz in accordance with EN 61000 4 3 Electromagnetic fields 30 V m 800 2 000 MHz in accordance with EN 61000 4 3 Conducted HF 0 15 to 80 MHz 10 V in accordance with EN 61000 4 6 Electrostatic discharge 4 kV contact 8 kV indirect in accordance with EN 61000 4 2 Burst AC and DC supply 4 kV in accordance with EN 61000 4 4 Burst signal 1 kV 2 kV in accordance with EN 61000 4 4 Surge AC and DC supply 1 kV 2 kV in accordance with EN 61000 4 5 Surge signal 500 V 1 kV in accordance with EN 61000 4 5 EN1434 4 Class C EC Directive 2004 22 EC Class E2 METRA Energie Messtechnik GmbH Page 9 of 45 Energy and Flow Computer ERW700 8 Constructive Design 8 1 Model Dimensions 1 Standard plastic housing Front view Side view
44. or E11 Temperature 2 measuring range calculation is carried out with Wiring error preset values E12 Pressure 1 Measured data outside the Measured value fails or E13 Pressure 2 measuring range Wiring error calculation is carried out with Pressure sensor is selected but not preset values connected or the current is less than 3 6mA No pressure sensor connected or no preset value for gaseous media E14 Density 1 Calculated density 1 is 0 kg m3 Preset value is used for calculations E15 EEprom Error when writing in the internal EEPROM E16 EEprom Para Parameter after device restart Default value is used for the outside the permissible range affected parameter E17 EEprom C Incorrect check sum of the counters saved in the EEPROM E18 Out pulse gt max Buffer overflow Pulse value or Output pulses are lost No minimum pulse width has been set influence on the displayed incorrectly counters E19 Mathematics Incorrect configuration incorrect No re evaluation parameters E20 Timeout LCD Communication between the basic No influence on the re device and the display interrupted evaluation E21 Conf Temp 1 Error in the configuration of the See E10 E22 Conf Temp 2 temperature input E23 Conf Pressure 1 Error in the configuration of the See E12 E24 Conf Pressure 2 pressure input E25 Conf DP Error in the configuration of the Preset value is used for differential pressure input calculations E26 Conf PriSensor Error in the configuration of the
45. or a volume or mass measurement with standard volume or mass flow meters Ultrasonic Vortex Turbine etc Set to Energy Q energy comes to that Selection Free configuration Volume Q Energy Q Volume dp Energy dp DIMU 14 1 2Language Setting the dialog language Selection German English 14 1 3 Additional counters Additional counters can be defined in the Free configuration setting A total of 3 counter sets energy mass volume standard volume are available however only 2 are actually physically available and saved The third set is only displayed as a sum or difference With 1 channel operation it is possible to toggle between 2 counters in an event controlled manner The event can be an error a limit value or an external control signal Selection Without Error D2 2 channel Sum Error D2 inv Difference Saturated steam Threshold 2 Sum Sum Saturated steam Threshold 2 inv 14 2 Type plate 14 2 1 Serial number The factory defined serial number is for information purposes only 14 2 2 TAG number A measuring point number TAG can be entered This is shown in the header of the display If no text is entered the header is not displayed Range 15 alphanumerical digits 14 2 3 Text 1 4 4 lines of text can be entered These are for information purposes only and do not have any further functions For example the order and serial number of the volume measuring device could be entered here Range 15 alphanum
46. puter ERW700 14 222 Set value counter Changing and saving the new value When selecting the parameter the current counter status is displayed and frozen Use Next to accept the possibly changed value in the counter Range Counter range 14 23 Password 14 23 1 Password 11 14 Range 1 9999 0 password deleted Default password 0009 0099 0999 9999 5 password levels are supported for accessing the set values via keys or the communication interfaces If a set value is to be altered the respective password level must be released first This occurs by entering or sending a valid password Higher password levels include all the lower ones A password level can be deactivated via a respective command and once a defined period has expired 3 min The password can also be deleted i e to ensure there is no further access via this password level If all the passwords have been deleted it is no longer possible to access the set values This can also be used as a calibration seal by deleting the passwords of the L3 and L4 level New passwords can then only be entered if the calibration bridge has been inserted To delete or alter a password the respective password level must be released first via the current valid password Password level LO no password Only the communication parameters for M Bus and Modbus can be altered here Password level L1 Access for end customers Configuration of the current output etc Password le
47. removed from terminal 3 and connected to terminal 6 together with the blue wire METRA Energie Messtechnik GmbH Page 17 of 45 Energy and Flow Computer ERW700 10 10 EWZ 311 7 Connection of a WZ 300 Transmitter of series EWZ 311 d 1 hot PT1000 yellow oem grey pink Ep cold PT1000 white green red blue yellow brown Attention For controlling of the balancing valve and to measure a current of up to 54 mA a special version of ERW700 is needed For dp signal input 11 terminal 13 14 can be used only Inside the junction box the pink wire has to be removed from terminal 3 and connected to terminal 6 together with the blue wire If there is a pressure transmitter build in the wires have to be disconnected and with separate wires connected to the ERW700 Page 18 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 11 Output Connection 11 1 Current outputs Active current output 11 2 Digital outputs Optic coupler Terminal Alternative Alternative module terminals terminals x1 22 24 5 7 X2 23 25 6 8 Terminal Alternative Alternative module terminals terminals X1 4 6 8 1 3 X2 5 7 9 2 4 11 3 Communication interfaces Module RS485 Module M Bus Module Ethernet ERW 700 Modul Ethernet METRA Energie Messtechnik GmbH P
48. sducer supply and auxiliary power 8 6 Characteristic 8 6 1 Reference conditions ioco cete tee rei ERE n pe 8 6 2 Measuring uncertainty sciis ranae e eea Eea N nennen 8 7 Operating Conditions seie heinien aaeei a enaa aiaa ntn 8 7 1 Installation conditions aie ened eee P TAA ened A E Ni TEES 8 7 1 1 Installation eee 8 7 1 2 General information iid ec ei e cec odes slide 9 7 1 3 INStalAtON ES 9 7 2 Ambient conditions 9 7 2 1 gt e eH e 9 7 2 2 e ped aie en eee 9 7 2 3 oc me satire nO Cn OR DP alot 9 7 2 4 Mechanical class 2 et pe re eee Hp IRR RET eet aed he 9 7 2 5 Degree it e prre Ci HERR p eek 9 7 2 6 Electromagnetic 404040 9 8 Constructive ie dee e 10 8 1 Model Dimensions een ene rete Ce p HER e ER 10 8 2 dre M w 11 8 3 Material IE 11 9 Terminal Assignment ire nente dee rne Sales E Re eret 11 10 Connection of External
49. sentropic exponent is entered here Refer to the literature for the values of various fluids Range 1 1 3 METRA Energie Messtechnik GmbH Page 31 of 45 Energy and Flow Computer ERW700 14 9 8 Compressibility If the primary sensor is an orifice the compressibility is entered here Refer to the literature for the values of various media Range 0 5 1 0 2 14 9 9 Saturated steam monitor The steam status can be monitored for steam measurements If the steam exceeds the saturated steam line an error message can be optionally generated Selection No Yes 14 10 Special fluid 14 10 1 Density determination Control of density determination If set to default calculation occurs with a constant density With P T default the medium as well as the pressure and temperature are used to calculate the density The density can also be handled as a measured value via current or frequency Selection default P T 0 4 20mA Frequency 14 10 2 Density input Electrical assignment of the sensor to the input Select a current input for density sensors with a current signal 11 14 and a digital input for sensors with a frequency 011 012 Range 11 12 011 DI2 14 10 3 Density measuring parameter 0 1 Polynomial coefficients for calculating the density from the measured values current frequency Range 1 37 1 37 14 10 4 Density default Preset value for the density Range 0 1 2 000
50. sive galvanically isolated Frequency range 0 100 Hz Min pulse width 5 ms 500 ms Overload protection 24 V Internal resistance 70 O Residual voltage 1 2 V Imax 20 mA Umax 24 V 5 2 Transducer supply and auxiliary power Output data Output parameter Transducer supply Voltage 24 V DC MUS Current Max 30 mA short circuit proof Auxiliary power Voltage 24 V DC Current Max 250 mA short circuit proof 6 Characteristic Values 6 1 Reference conditions Voltage supply 230 VAC 10 50 Hz 0 5 Hz Warm up time 10 min Ambient temperature 25 C 5 C Humidity 3996 10 r h 6 2 Measuring uncertainty See 4 1 7 Operating Conditions 7 1 Installation conditions 7 1 1 Installation instructions Please read the operating instructions carefully prior to installation and start up Page 8 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 7 1 2 General information Observe operating data marked on the housing Also observe data in the order confirmation and on the data sheet If you wish to use the device under different operating conditions consult the manufacturer in advance always state the serial number 7 1 3 Installation Various installations are possible e Housing with LCD for wall installation e Housing without LCD for wall installation and separate LCD housing e Housing for cabinet installation and separate installation of the LCD i
51. spective fixed values Range 0 5 kg m 2000 kg m 14 9 3 Reference pressure The pressure for the status on which the conversion is to be based is entered here This is of interest where depending on the application various standard statuses are common e g air 1 bar The calculation is carried out for all the media The reference pressure and reference temperature are used to internally calculate the reference density Range 0 5 bar 1 01325 20 0 bar 14 9 4 Reference temperature The temperature for the status on which the conversion is to be based is entered here This is of interest where depending on the application various standards are common e g mineral oil 15 C The calculation is carried out for all the media The reference pressure and reference temperature are used to internally calculate the reference density Range 0 100 0 C 14 9 5 Critical pressure The compressibility for gas can be calculated according to Redlich Kwong The critical pressure is a parameter and is entered here Refer to the literature for the values of various media Range 1 0 bar 2000 0 bar 14 9 6 Critical temperature The compressibility for gas can be calculated according to Redlich Kwong The critical temperature is a parameter and is entered here Refer to the literature for the values of various media Range 1K 2000K 14 9 7 Isentropic exponent If the primary sensor is an orifice the i
52. start value 1 2 36 14 15 Thresholds 5 itte hiec teret EO 36 14 15 1 Threshold selection 1 2 d det B n ed 36 14 15 2 Top Bottom threshold as reo ete e E deeds 36 14216 Digital OUtputs orti Erit eH bei id ie tdt D dt e ere teu det 36 14 16 1 Digitaloutput mode 7 xiii ict remet oec ta re pri enu et 36 14 16 2 Pulse value digital 1 30 20 000000 36 1469 Min puise Willi tee ect cen ro eben Heb or deed 36 1417 G rrent output iae nee pe ten ste ol tar Mista beeen 37 14 17 1 Selection current output 1 2 6 0 4024 1 00000 enne 37 14 17 2 Preset current output 1 6 37 14 17 3 Current output end value 1 2 6 004040 000000000 37 14 17 4 Current output start value 1 2 6 00440440 0 0 0 37 14 17 5 Current output time constant 1 2 6 37 14 17 6 Current output error behaviour 1 2 6 00 0000 0000 37 14 17 7 Current output level 1 2 6 2 2 2 37 Lu 6 Us E attend sede 37 14 18 1 pru 37 14 78 21 mg mises teet see ueteres eo oca putet rto da 38 14 18 38 1 2
53. tput 1 3 7 Value of the output pulse The unit always corresponds to the selected data Range 0 01 pulse unit 10000 pulse unit 14 16 3 Min pulse width Minimum pulse pause width of the pulse outputs The setting applies to all the pulse outputs The smallest value is 5 ms for the module outputs 1 ms Since software version V1 14 this parameter is only valid for the module outputs the outputs basic outputs have a duty cycle of about 1 1 Page 36 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 Range 1 ms 500 ms 14 17 Current output 14 17 1 Selection current output 1 2 6 Selection of the current output Selection Inactive Pa 2 bar P kW 0 mA T C Qb 2 m3 h 4mA T 2 C Qn 2 m3 h 20 mA dT C Qm 2 t h Preset value Density kg m P 2 kW dP mbar Qb m3 h Concentration dP rad mbar Qn m3 h Pa bar Qm t h 14 17 2 Preset current output 1 2 6 Preset value for checking the current transmission and for test purposes Range 0 22 14 17 Current output end value 1 2 6 Scaling of the current output Range 50 100000 14 17 4 Current output start value 1 2 6 Scaling of the current output Range 50 100000 14 17 5 Current output time constant 1 2 6 Damping factor for the current output Tau n 125 ms Range 1 255 14 17 6 Current output error behaviour 1 2 6 Behaviour of the current output if
54. trate the structure certain levels are displayed below as a mind map Branches without a dot are end branches branches with a dot at the end continue to the next lower level The data shown below is only an example Depending on the configuration and released password level only part of the menu tree is visible 13 1 1 Level 1 Information Parameter epson 6109 Logbook 13 1 2Level 2 pressure passwords temperature thresholds type label outputs display clock lt gt primary transm Parameter pe secondary transm inputs communication counters diff pressure Page 26 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 14 Parameter Description 14 1 Application Standard settings may be marked in bold 14 1 1 Basic application The application specifies the basic characteristics It is generally used to selectively control the parameter list i e many of the parameters which are not required are hidden At the same time some functions in the device are de activated e g energy relevant values are only calculated if energy has been selected All functions can be set flexibly in the Free configuration setting Set to Volume dp is pre configured the device for a volume or mass measurement with differential pressure transducer orifice venturi etc Set to Energy dp energy comes to that Set to Volume Q is pre configured the device f
55. value is subtracted from the measured value Range 0 00 bar 2 00 bar Example In case of a separate installation and a height difference of 4 5 m between the tube center with steam Condensate level and the sensor center a value of 0 45 bar has to be set When installing a relative pressure sensor the air pressure approx 1 bar has to be subtracted from the determined value 14 13 8 Input pressure Electrical assignment of the current input to the measured value Range I1 12 I3 14 14 14 Temperature 14 14 1 Temperature mode 1 2 Operating mode for the temperature sensor PTxxxx Selection Preset Calculation with preset value PT100 1000 Measurement PT100 PT500 PT1000 0 4 20 Measurement via current input 1 4 14 14 2 Preset temperature 1 2 Preset value for the temperature If the Temperature mode is set to Preset all calculations are carried out with this preset value If a temperature sensor is connected this value is only used for calculation if a measuring fault has occurred Range 50 600 C 14 14 3 Temperature input Electrical assignment of the input to the measured value Range PT1 PT2 11 12 I3 14 METRA Energie Messtechnik GmbH Page 35 of 45 Energy and Flow Computer ERW700 14 14 4 Temperature end value 1 2 Scaling of the temperature input in the current input mode Temperature at which the sensor supplies 20 mA Range 50 1000 C 14 14
56. vel L2 Access for the operator Password level L3 Access for the test centre The electronics has a defined interface at this level The set values only depend on the connected sensors and applications Password level L4 Access for the electronics manufacturer All the line up values of the electronics are saved here Default passwords Default passwords are loaded for the various password levels during the factory test The person responsible for each respective level must ensure that these passwords are replaced by secret passwords or the passwords are deleted in order to prevent unauthorized access The password L4 is deleted at the end of the factory test Name CL Passwords 0 Application Orifice 3 Basic application 9 Outputs 1 Language st Additionalcounters 3 Inputs 3 Type label 1 Medium 3 Communication 0 Display M Bus 0 Counters 3 Pressure 3 Modbus 0 Actualvalues 2 11 Counters 3 oue Values printed in bold type include whole groups of set data Page 40 of 45 METRA Energie Messtechnik GmbH Energy and Flow Computer ERW 700 15 Information Menu 15 1 Time recording A real time clock has been integrated However since this can be altered the hourly values are determined by an internal pulse 15 1 1 Time Display and setting of the time Range 00 00 00 23 59 59 15 1 2 Date Displa
57. y and setting of the date Range 01 01 00 31 12 99 15 1 3 Operating hours Display of the total operating hours Range 00000 00 h 99999 99 h 15 1 4 Measuring hours Display of hours in which the flow rate was above the crawl flow rate Range 00000 00 h 99999 99 h 15 1 5 Downtime Display of hours during which there was no power supply to the electronics Calculation only occurs when the real time clock is working Range 00000 00 h 99999 99 h 15 1 6 Saturated steam hours The hours during which the value falls below the saturated steam line are added together irrespective of the activated saturated steam monitor Range 00000 00 h 99999 99 h 15 1 7 Error hours Number of hours during which an error message was displayed If the saturated steam monitor has been activated the saturated steam hours are also counted Range 00000 00 h 99999 99 h 15 2 Calculation unit Display of information about the hardware and software Display of the version and check sum 15 3 Modules Display of the slot assignment and the module type METRA Energie Messtechnik GmbH Page 41 of 45 Energy and Flow Computer ERW700 16 Logbook Menu General information about the data logger functions The calculation unit has extensive data logger functions 2 fixed dates up to 30 monthly values 100 error messages 100 parameter changes min max values for 12 months and up to 800 data sets can be saved All the memor
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