Carlo Gavazzi - Model EM21 - Energy Meter - Pulse Output Datasheet

Specifications are subject to change without notice EM2172D DS ENG 301012 1• Class B (kWh) according to EN50470-3• Class 1 (kWh) according to EN62053-21• Class 2 (kvarh) according to EN62053-23• Accuracy ±0.5 RDG (current/voltage)• Energy meter• Instantaneous variables readout: 3 DGT• Energies readout: 7 DGT• System variables: W, var, PF, Hz, Phase-sequence. • Single phase variables: VLL, VLN, A, PF• Energy measurements: total kWh and kvarh• TRMS measurements of distorted sine waves (voltages/currents)• Self power supply• Dimensions: 4-DIN modules and 72x72mm• Protection degree (front): IP50• Application adaptable display and programming procedure(Easyprog function)• Easy connections management• Detachable display• Multi-use housing: for both DIN-rail and panel mounting applicationsProduct DescriptionThree-phase energy meter withremovable front LCD displayunit. The same unit can beused either as a DIN-railmounting or a panel mountingenergy meter. This general pur-pose three-phase energy meterEnergy ManagementEnergy MeterType EM21 72D• Certified according to MID Directive (option PF only): see “how to order” below• Not-certified version available (option X):see “how to order” on the next page.is suitable for both active andreactive energy metering forcost allocation but also formain electrical parameter mea-surement and retransmission(transducer function). Housingfor DIN-rail mounting with IP50ModelRange codeSystemPower supplyOutput 1Output 2OptionMeasurementMounting typeHow to order EM21 72D AV5 3 X O X PF A DType SelectionRange codesAV5: 400VLL AC, 5(6)A(CT connection) AV6: 120/230VLL AC 5(6)A (VT/PT and CT connections)OptionsPF: Certified according toMID Directive, Annex"B" + Annex "D" forlegal metrology relevantto active electrical ener-gy meters (see AnnexMI-003 of MID). Can beused for fiscal (legal)metrology.System3: 3-phase, 4-wireOutput 1O: Single static output (opto-mosfet) Power supplyX: Self power supply from 18V to 260VACVLN, 50 Hz (connection VL1-N)Output 2X: None S: RS485 port (front) protection degree. Cur-rent measurements carried outby means of external currenttransformers and voltage mea-surements carried out either bymeans of direct connection orby means of potential trans-formers. EM21-72D is provid-ed, as standard, with a pulsat-ing output for active energyretransmission. In addition a 2-wire RS485 communicationport is available as an option.Certified according to MID Directive,Annex "B" + Annex "D" for legal metrolo-gy relevant to active electrical energymeters (see Annex MI-003 of MID). Canbe used for fiscal (legal) metrology. Only the total activeenergy meter is certified according to MID.MIDAV5AV63 OX PFRangeSystemOutput 1Power supplyOptionXSOutput 2NOTE: please check theavailability of the neededcode on the verification pathdiagram on left before order .MeasurementA: The power is always integrated -both in case of positive (imported)and negative (exported)powerB: only the positive (imported)power is integrated - no integration in case of negative (exported) powerMounting typeD: DIN-rail mounting P: Panel mounting ABMeasurementDPMountingtype2 Specifications are subject to change without notice EM2172D DS ENG 301012EM21 72DModelRange codeSystemPower supplyOutput 1Output 2OptionHow to order EM21 72D AV5 3 X O X XType SelectionRange codesAV5: 400VLL AC, 5(6)A or1(6)A (*)(CT connection) AV6: 120/230VLL AC 5(6)A or 1(6)A (*)(VT/PT and CT connections) OptionsX: noneSystem3: balanced and unbalanced load: 3-phase, 4-wire; 3-phase, 3-wire;2-phase, 3-wire;1-phase, 2-wireOutput 1O: Single static output(opto-mosfet) Power supplyX: Self power supply from 18V to 260VACVLN, 45 to 65 Hz (connection VL1-N)Output 2X: None S: RS485 port (*) the range 1(6)A is avail-able but not in compliancewith the EN50470-3 stan-dard.Not certified according to MID directive. Cannot beused for fiscal (legal) metrology.STANDARDAV5AV63 OX XRangeSystemOutput 1Power supplyOptionXSOutput 2NOTE: please check theavailability of the neededcode on the verification pathdiagram on left before order .Specifications are subject to change without notice EM2172D DS ENG 301012 3EM21 72DRated inputs System type: 3Current type Not isolated (shunt inputs).Note: the external currenttransformers can be con-nected to earth individually.Current range (by CT) AV5 and AV6: 5(6)A. The“1(6)A” range is availablebut not in compliance withthe EN50470-3 standard.Voltage (direct or by VT/PT) AV5: 400VLL; AV6: 120/230VLLAccuracy (Display + RS485) In: see below, Un: see below(@25°C ±5°C, R.H. =60%, 50Hz)AV5 model In: 5A, Imax: 6A; Un: 160 to260VLN (277 to 450VLL).AV6 model In: 5A, Imax: 6A; Un: 40 to144VLN (70 to 250VLL).Current AV5, AV6 models From 0.002In to 0.2In:±(0.5% RDG +3DGT).From 0.2In to Imax:±(0.5% RDG +1DGT).Phase-neutral voltage In the range Un: ±(0,5%RDG +1DGT).Phase-phase voltage In the range Un: ±(1% RDG+1DGT).Frequency Range: 50Hz;resolution: ±1HzActive power ±(1%RDG +2DGT).Power Factor ±[0.001+1%(1.000 - “PFRDG”)].Reactive power ±(2%RDG +2DGT).Active energy class B according toEN50470-1-3;class 1 according toEN62053-21.Reactive energy class 2 according toEN62053-23.In: 5A, Imax: 6A; 0.1 In:0.5A. Start up current: 10mA.Energy additional errorsInfluence quantities According to EN62053-21,EN50470-1-3, EN62053-23Temperature drift =200ppm/°C.Sampling rate 1600 samples/s @ 50Hz,1900 samples/s @ 60HzDisplay refresh time 1 secondDisplay 2 lines 1st line: 7-DGT,2nd line: 3-DGT or 1st line: 3-DGT + 3-DGT, 2nd line: 3-DGT.Type LCD, h 7mm.Instantaneous variables read-out 3-DGT.Energies Imported Total: 5+2, 6+1 or7DGTOverload status EEE indication when thevalue being measured isexceeding the “Continuousinputs overload” (maximummeasurement capacity)Max. and Min. indication Max. instantaneous vari-ables: 999; energies:9 999 999. Min. instanta-neous variables: 0; ener-gies 0.00.LEDs Red LED (Energy con-sumption) 0.001 kWh by pulse if CTratio x VT ratio is <7;0.01 kWh by pulse if CTratio x VT ratio is = 7.0< 70.0;0.1 kWh by pulse if CTratio x VT ratio is = 70.0< 700.0;1 kWh by pulse if CT ratiox VT ratio is = 700.0;Max frequency 16Hz, according toEN50470-3Green LED (on the terminalblocks side) for power on(steady) and communica-tion status: RX-TX (in caseof RS485 option only)blinking.Measurements See “List of the variablesthat can be connected to:”Method TRMS measurements ofdistorted wave forms.Coupling type By means of external CT’s.Crest factor In 5A: =3 (15A max. peak).Current OverloadsContinuous 6A, @ 50Hz.For 500ms 120A, @ 50Hz.Voltage OverloadsContinuous 1.2 UnFor 500ms 2 UnCurrent input impedance5(6)A < 0.3VAVoltage input impedanceSelf-power supply Power consumption: <2VA.Frequency 50 ± 5Hz/60 ± 5Hz.Key-pad Two push buttons for vari-able selection and pro-gramming of the instru-ment working parameters.Input specifications4 Specifications are subject to change without notice EM2172D DS ENG 301012EM21 72DConnections 2-wire. Max. distance1000m, termination directlyon the instrument.Addresses 247, selectable by meansof the front keypadProtocol MODBUS/JBUS (RTU)Data (bidirectional)Dynamic (reading only) System and phase vari-ables: see table “List ofvariables...”Static (reading and writing) All the configurationparameters.Data format 1 start bit, 8 data bit, noparity,1 stop bit.Baud-rate 9600 bits/s.Driver input capability 1/5 unit load. Maximum160 transceiver on thesame bus.Insulation By means of optocouplers,4000 VRMS output to mea-suring input.Pulse outputNumber of outputs 1Type Programmable from 0.01 to9.99 kWh per pulses. Out-put connectable to theenergy meters (kWh)Pulse duration TOFF =120ms, according toEN62052-31.TON selectable (30 ms or100 ms) according toEN62053-31Output Static: opto-mosfet.Load VON 2.5 VAC/DC max. 70 mA,VOFF 260 VAC/DC max.Insulation By means of optocouplers,4000 VRMS output to mea-suring inputs.RS485Type Multidrop, bidirectional(static and dynamic vari-ables)Output specificationsTransformer ratioVT (PT) 1.0 to 99.9 / 100 to 999 / CT 1.0 to 99.9 / 100 to 999.The max CTxVT product forAV6 models is 2421 (X option)or 908 (PF option).The max CT ratio for MIDapplications (PF option) is525.Displaying Up to 3 variables per page.See « Display pages » , 3different set of variables avail-able (see « Display pages »)according to the meteringfunction being selected.Reset By means of the front key-pad: total energies (kWh,kvarh).Easy connection function Wrong phase detection anddisplaying. For all the display selections(except “D”) the current, pow-er and energy measurementare independent on the cur-rent direction.Password Numeric code of max. 3 DGT;2 protection levels of the pro-gramming data:1st level Password “0”, no protection;2nd level Password from 1 to 999, alldata are protectedProgramming lock By means of potentiometer(back-side of the displaymodule) it is possible to lockthe access to all the configu-ration parameters.System selectionSystem 3-Ph.n unbalanced load 3-phase (4-wire)3-phase (3-wire)System 3-Ph.1 balanced load • 3-phase (3-wire) one currentand 3-phase to phase voltagemeasurements. Note: thephase to phase voltage is cal-culated multiplying by 1.73the virtual phase to neutralvoltage.• 3-phase (4-wire) one currentand 3-phase to neutral volt-age measurements. Note: thephase to phase voltage is cal-culated multiplying by 1.73the virtual phase to neutralvoltage.• 3-phase (2-wire) one currentand 1-phase (L1) to neutralvoltage measurement.System 2-Ph 2-phase (3-wire)System 1-Ph 1-phase (2-wire)Software functionsSpecifications are subject to change without notice EM2172D DS ENG 301012 5EM21 72DSelf power supply 18 to 260VAC (48-62Hz).Across input “VL1” and “N”Power consumption =2VA/1WPower supply specificationsSurge On current and voltagemeasuring inputs circuit:6kV;Radio frequency suppression According to CISPR 22 Standard complianceSafety IEC60664, IEC61010-1EN60664, EN61010-1EN62052-11 Metrology EN62053-21, EN62053-23,EN50470-3 Pulse output DIN43864, IEC62053-31 Approvals CE, cULus listed, MID (PFoption only)Connections Screw-type Cable cross-section area 2.4 x 3.5 mm Min./Max. screws tighten-ing torque: 0.4 Nm / 0.8 NmHousingDimensions (WxHxD) 72 x 72 x 65 mm Material Noryl PA66, self-extinguishing: UL 94 V-0Mounting Panel and DIN-railProtection degreeFront IP50Screw terminals IP20 Weight Approx. 400 g (packingincluded)Operating temperature -25°C to +55°C (-13°F to131°F) (R.H. from 0 to 90%non-condensing @ 40°C)according to EN62053-21and EN62053-23.Storage temperature -30°C to +70°C (-22°F to158°F) (R.H. < 90% non-condensing @ 40°C)according to EN62053-21and EN62053-23.Installation category Cat. III (IEC60664,EN60664).Insulation (for 1 minute) 4000 VRMS between mea-suring inputs and digitaloutput.Dielectric strength 4000 VRMS for 1 minute.Noise rejection CMRR 100 dB, 48 to 62 Hz.EMC According to EN62052-11Electrostatic discharges 15kV air discharge;Immunity to irradiated Test with current: 10V/mfrom 80 to 2000MHz;Electromagnetic fields Test without any current:30V/m from 80 to2000MHz;Burst On current and voltagemeasuring inputs circuit: 4kVImmunity to conducted disturbances 10V/m from 150KHz to80MHzGeneral specificationsInsulation between inputs and outputsMeasuring Inputs Opto-Mosfet output Communication port Self power supplyMeasuring Inputs - 4kV 4kV 0kVOpto-Mosfet output 4kV - - 4kVCommunication port 4kV - - 4kVSelf power supply 0kV 4kV 4kV -NOTE: all the models have, mandatorily, to be connected to external current transformers.6 Specifications are subject to change without notice EM2172D DS ENG 301012EM21 72DAccuracy (According to EN50470-3 and EN62053-23)kWh, accuracy (RDG) depending on the currentPercentage error limits for class index B6A (Imax)6A (Imax)5A (In)5A (In)0.25A(Itr)0.25A(Itr)0.05A(Imin)Accuracy limits (Active energy)Start-up current: 10mA kvarh, accuracy (RDG) depending on the currentPercentage error limitsAccuracy limits (Reactive energy)Start-up current: 10mA PF=1PF=L0.5to C0.86A (Imax)6A (Imax)5A (In)5A (In)0.25A0.5A0.1A0.25Asin?=1sin?=0.5+1%0%+1,5%-1%-1,5%+2%0%+2,5%-2%-2,5%MID “Annex MI-003” compliance (PF option only)Accuracy 0.9 Un = U = 1.1 Un; 0.98 fn = f = 1.02 fn; fn: 50Hz; cos?: 0.5 inductive to 0.8capacitive.Class B I st: 0.01A; I min:0.05A; I tr: 0.25A; I n: 5A I max: 6A.Operating temperature -25°C to +55°C (-13°F to131°F) (R.H. from 0 to 90%non-condensing @ 40°C) EMC compliance E2Mechanical compliance M2Protection degree in order to achieve theprotection against dust andwater required by thenorms harmonized to MID,the meter must be usedonly installed in IP51 (orbetter) cabinets.System variablesEquivalent three-phase voltageVoltage asymmetryThree-phase active powerThree-phase apparent powerUsed calculation formulasPhase variablesInstantaneous effective voltageInstantaneous active powerInstantaneous power factorInstantaneous effective currentInstantaneous apparent powerInstantaneous reactive powerEnergy meteringWhere:i= considered phase (L1, L2 or L3)P= active power; Q= reactive power;t1, t2 =starting and ending time pointsof consumption recording; n= timeunit;?t= time interval between twosuccessive power consumptions; n1, n2 = starting and ending discretetime points of consumption recordingThree-phase power factor(TPF)Specifications are subject to change without notice EM2172D DS ENG 301012 7EM21 72D(x) = available(o) = not available (zero indication on the display)(1) = Variable available only through the serial communication port RS485List of the variables that can be connected to:Display pagesNo1st variable (1st half-line)2nd variable (2nd half-line)3rd variable (2nd line)NoteApplicationsA B C DPhase sequenceThe phase sequence triangle appears inany page only if there is a phase reversex x x x1 Total kWh W sys x x x x2 Total kvarh kvar sys x x x3 PF sys HzIndication of C, -C, L, -L depending onthe quadrantx x x4 PF L1 PF L2 PF L3Indication of C, -C, L, -L depending onthe quadrantx x5 A L1 A L2 A L3 x x6 V L1-2 V L2-3 V L3-1 x x7 V L1 V L2 V L3 x xNo Variable1-ph. sys.2-ph. sys.3-ph. 4-wire balancedsystem3-ph. 3-wirbalancedsystem3-ph. 4-wire unbalancedsystem3-ph. 3-wirunbalancedsystemNotes1 kWh x x x x x x Total2 kvarh x x x x x x Total3 V L-N sys (1) o x x x x x sys=system (?)4 V L1 x x x x x x5 V L2 o x x x x x6 V L3 o o x x x x7 V L-L sys (1) o x x x x x sys=system (?)8 V L1-2 o x x x x x9 V L2-3 o o x x x x10 V L3-1 o o x x x x11 A L1 x x x x x x12 A L2 o x x x x x13 A L3 o o x x x x14 VA sys (1) x x x x x x sys=system (?)15 VA L1 (1) x x x x x x16 VA L2 (1) o x x x x x17 VA L3 (1) o o x x x x18 var sys x x x x x x sys=system (?)19 var L1 (1) x x x x x x20 var L2 (1) o x x x x x21 var L3 (1) o o x x x x22 W sys x x x x x x sys=system (?)23 W L1 (1) x x x x x x24 W L2 (1) o x x x x x25 W L3 (1) o o x x x x26 PF sys x x x x x x sys=system (?)27 PF L1 x x x x x x28 PF L2 o x x x x x29 PF L3 o o x x x x30 Hz x x x x x x31 Phase sequence o o x x x x• RS485 communication port • Pulse outputs (only “energies”)8 Specifications are subject to change without notice EM2172D DS ENG 301012EM21 72DAdditional available information on the displayList of selectable applicationsType 1st line 2nd line noteMeter information 1 Y. 2007 r.A0 Year of production and firmware releaseMeter information 2 value LEd (kWh) KWh per pulse of the LEDMeter information 3 SYS [3P.n] value System type and connection typeMeter information 4 Ct rAt. value Current transformer ratioMeter information 5 Ut rAt. value Voltage transformer ratioMeter information 6 PuLSE (kWh) value Pulse output: kWh per pulseMeter information 7 Add value Serial communication addressMeter information 8 value Sn Secondary address (M-bus protocol)Description NotesA Active energy meter ** Active energy measurement with some minor parametersB Active and reactive energy meter ** Active and reactive energy measurement with some minor parametersC Full set of variables ** Full set of available variables can be displayed (default selection, except PFBoption)D Full set of variables +* Full set of available variables can be displayed + (default in PFB option)One instrument with double mounting capability... as DIN-rail mounting meter.By means of the patented detachable display it is possi-ble to configure the same instrument either as a panelmounting meter or...Notes:+ Only in “D” application the actual direction of the current is considered.* Not available with option PF A. ** Not available with option PF B.Specifications are subject to change without notice EM2172D DS ENG 301012 9EM21 72D3-CT and 3-VT/PT connections3-CT connection3-ph, 4-wire, unbalanced load Fig. 23-ph, 4-wire, unbalanced load Fig. 1(6A) Self power supply, system type selection: 3P.n6A inputs V inputsWiring diagrams3-CT and 3-VT/PT connections3-ph, 3-wire, unbalanced load Fig. 42-CT and 3-VT/PT connections ARON3-ph, 3-wire, unbalanced load Fig. 62-CT connections (ARON)3-ph, 3-wire, unbalanced load Fig. 51-CT and 3-VT/PT connections3-ph, 3-wire, balanced load Fig. 83-CT connection3-ph, 3-wire, unbalanced load Fig. 31-CT connection3-ph, 3/4-wire, balanced load Fig. 7(6A) System type selection: 3P.n(6A) Self power supply, system type selection: 3P.1NOTE: It is measured only the voltage between9 and 10 which is repeated for the other phases.RS485Staticoutput9 8 7 10 6 5 4 3 2 1 9 8 7 10 6 5 4 3 2 19 8 7 10 6 5 4 3 2 1 9 8 7 10 6 5 4 3 2 1 9 8 7 10 6 5 4 3 2 19 8 7 10 6 5 4 3 2 1 9 8 7 10 6 5 9 8 7 10 6 5NOTE: For a correct power supply of the instrument, the neutral must always be connected.10 Specifications are subject to change without notice EM2172D DS ENG 301012EM21 72D2-CT connection2-ph, 3-wire Fig. 9(6A) System type selection: 2P2-CT and 2-VT/PT connections2-ph, 3-wire Fig. 101-CT connection1-ph, 2-wire Fig. 11(6A) System type selection: 1PStatic output wiring diagram1-CT and 1-VT connections1-ph, 2-wire Fig. 12(6A) System type selection: 1PWiring diagramsVDC/AC supplyOpto-mosfetVDC/ACRS485 port9 8 10 6 5 4 3 9 8 10 6 5 4 3 9 10 6 59 10 6 516151413B+A-16151413B+A-B+A-RS485 NOTE: additional devices provided with RS485 are connected as per the picture above. The termination of the serialoutput is carried out only on the last instrument of the network, by means of a jumper between (B+) and (T).RS485 port wiring diagram17 1811EM21 72D1. KeypadTo program the configuration parameters and scroll the variables on the display.2. Pulse output LEDRed LED blinking proportional to the energy being measured.3. DisplayLCD-type with alphanumeric indications to display all themeasured variables.4. ConnectionsScrew terminal blocks for instrument wiring.5. Green LED Lit when power supply is availableFront panel description3214Dimensions (DIN configuration)Dimensions and panel cut out (72x72 panel mounting configuration)41568x68mm-0 +0.7mm www.EHOOIORZV\\VWHPV.co.ukFor pricing, or any further, information please contact us. Tel: +44 (0)800 0277786 or visit our website.