EW9L Series 3 Phase Coulometer User s Manual

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EWL Series Phase Coulometer User s Manual The coulometers are widely applied to control system, SCD system and energy management system, transformer substation automation, distributing net

1 EWL Series Phase Coulometer User s Manual The coulometers are widely applied to control system, SCD system and energy management system, transformer substation automation, distributing net automation, small district electrical power monitor, industrial automation, intelligent construction, intelligent switchboard, switch cabinet, etc. It is esay to install and maintain, simple connection, filed programmable setting input parameters. Features: Measurement Parameters: Voltage/Current/ctive power/eactive power/frequency/power factor ect, parameters. Two On-Off input/output, isolation for input and output. True effective value measuring. With programmable analog output function, analog output for voltage/current/active power/reactive power/fequency/power factor. With S connection and Modbus TU communication protocol. With energy pulse output, programmable alarm, display programmable setted parameters. With power failure function for display menu select/kwh/kvarh Model EWL Input ange: B: XV D: Others Input: : phase wire or phase wire input; : phase wire or phase wire input with Communication larm Function: C: alarm output : alarm output Output: : transformed analog output D: With transformed analog output ( -m) L: LCD Display Dimension: : H*W*L(mm) EW Series phase coulometer Model Indication larm Transformed analog output Communication EWL-B EWL-B S EWL-CB EWL-CB S EWL-DCB m EWL-DCB m S Model Pulse output On-Off input Yes Yes Technical Parameters Connection ated Voltage Value Voltage Overload Voltage Consumption phase wires, phase wires C -V phase voltage/ C -V Line voltage Continuous:. times <V Instantaneous: times/s (each phase) Page KKEWLE-/-

2 Voltage Imdepance KΩ MS measurement, ccuracy :. Voltage ccuracy Current ange C. Current Overload Continuous:. times Instantaneous: times/s Current Consumption <.V (each phase) Current Imdepance <mω Current ccuracy MS measurement, Frequency ccuracy. -Hz, ccuracy:.hz ctive power/eactive power/pparent power, accuracy:.%f.s Power Energy ctive power/eactive power accuracy % Display LCD Display Power Supply C/DC Power Supply Consumption V V V Output Digit Interface S- Modbus-TU Protocol Pulse Output energy pulse output(optical coupler relay) rmal Pulse Number: imp/kwh On/Off Input On/Off input (connection without voltage or current signal) larm Output On/Off output, VC/ or V DC/ nalog Output transformed analog output, -m DC Load Ω Working Environment Temperature: -, Humidity: % H Storage Environment Isolation&puncture Insulation - Input signal and power V C, Input and output VC, power and transformed analog output, S connection, DI connection, Pulse output connection DC V Input/output/power supply to Meter cover MΩ Dimension W H L mm Weight.kg Panel Indication symbol Meaning U voltage. symbol current P active power Q reactive power S apparent power PF power factor F Frequency TOT Total PE QE Kwh KvarH Name Function Set Key Confirmed the setted value, can be used to change kwh display in measuring status Left Key Chang to display left page and measure parameters ight Key Decrease Key Increase Key eturn Key Change to display right page and measure parameters Change menu or increase value Change menu or decrease value eturn to upper menu in operation Check measuring value and working status indication:. Under measuring status, Press / key to shift display of phase voltage, phase current, active power, power factor, apparent power, reactive power, apparent power, total power ect.. Press / key to shift display of Kwh and KvarH.. Under alarm mode, DO and DO is used as alarm output status indication. Under ON/OFF remote control mode, DO and DO is used as ON/OFF output status indication.. S, S indicate ON/OFF remote control input status.. larm flash means alarm output, COM flash means communicating, UN move means the meter is under measuring status.. Σ means measuring phase total active power, reactive power, appearant power, PE means the total active energy, QE means total reactive energy. Page KKEWLE-/-

3 Menu Operation More than First class seconds Second class Measuring Status Third class fter modifying data, press key for confirmation and key return to previous return to previous menu or press menu. emove Kwh code setting System setting Menu lock code setting Choose input net of measuring signal Signal input Voltage atio Current atio Meter s address range Communication parameters Baud ate # larm mode ON/OFF setting # larm value setting # larm Hysteresis value setting # larm value unit # larm mode # larm value setting # larm Hysteresis value setting # larm value unit nalog Mode nalog output nalog parameters up limit value nalog parameters lower limit value nalog Unit Page KKEWLE-/-

4 Menu Operation Illustration Under customer menu status. Press key more than seconds to enter customer menu, set each parameter.. If the display is the first class or second class, press set key to enter next class display. Press to change other parameters.. If the display is second or third class, press key to return previous display.. If the display is third class, press set key to flash digit, press to change value. Press key to shift place. Keep pressing to save value. If press, do not save the set value and return to second class. to move the decimal point.. When data flashing, short press. fter modifying the parameters, press confirm key more than seconds, exit user menu, return to measuring status. Menu Structure and Function Description. Level Level Level Clear Energy Password System Setting Function Shield Code Shield Code Current transform Ct Coulometer address range ddress Communication Parameters Baud rate Baud rate:. means,. means st alarm mode When the value is, it is for DO function, otherwise it is for alarm mode. Please refer to table. st alarm value setting st alarm value st alarm hysteresis value st alarm hysteresis value setting : means international standard unit. K: means times of standard unit. The unit of alarm value is the same as alarm hysteresis value. st alarm value unit ON/OFF Value setting When the value is, it isfor DO function,otherwise it is for alarm mode. Please refer to table. nd alarm mode nd alarm value setting nd alarm value nd alarm hysteresis value nd alarm hysteresis value setting : means international standard unit. K: means times of standard unit. The unit of alarm value is the same as alarm hysteresis value. nd alarm value unit nalog output If the second digit is, (ie ), the value in the menu can be read but cannot be changed. To set the voltage signal ratio=primary coil voltage/ secondary coil voltage To set the current signal ratio=primary coil current/ Secondary coil current Voltage transform Pt Signal input Energy can only be cleraed when enter into correct passsword.(password: ) To select the input network of the measured signal Network Description Transform mode selection Transform upper limit Transform low limit Transform value unit Please refer to table transform analog output m transform analog output m means international standard unit. K means times of international standard unit. Output Function. Energy pulse EWL provides the function of quadrant energy calculation, energy pluse output and S interface for display and transmit of energy data. The energy pulse of optical couple relay with open collector enables the long distance transmit of active&reactive energy. emote PC terminal, PLC, DI On-Off output and collector module are applied to collect the pulse of coulometer to enable the energy cumulation calculation. Besides, this output mode is also the energy accuracy check way(national metrology regulations: Standard meter pulse tolerance comparison method) (). Electrical characteristic: the output of optical couple relay with open collector, V V, Iz m (). Pulse constant: imp/kwh. It means the impulse output. is when the coulometer counts up to KWH. The piont should be emphasized is that the above kwh is for the nd coil energy. Supposed that PT and CT is connected, the primary coil energy that pulse refer to is equal to kwhx voltage transform PT X current transform CT..DI/DO function way S-S be used to remote control electric ON/OFF status, DO function be used to control electric devices, when using Do function and alarm mode is setted as, otherwise DO and DO will be as L, L output. DO DO function control value is writn via S interface.. Communication function ( please refer to the communication protocol). Transform output( please refer to table ). larm function (please refer to table ) Page KKEWLE-/-

5 Communication protocol EWL series coulometer adopts Modbus TU communication protocol S half duplex communication, read function code x, write function code x, adopts digit CC check, the coulometer does not feedback check error. Start Stop Data Check Communication abnormal solution: When abnormal answer, the highest of function code will be set to. For example, if the request function code from host is x, Error type code x--function code error: Meter does not support the function code it receives x--data position error: The data position assigned by host is out of the range of meter. x--data value error: The data value sent from host is out of the range of meter.. ead multi-register For example, host reads float data L (st alarm value.) The address code of L is, because L is float data ( byte), seizes data register. ccording to IEEE-, the standard hexadecimal memory code of decimalist float data. is. Host request(ead multi-register) Meter address Function Code x x Start address Start address length length High high low low CC code low CC code high x xc xb Meter normal answer ( write multi-register) Meter address Function Code x number Data high Data low Data high x x x x Data low x CC code low CC code high xe x Function code abnormal answer:(for example, host request function code is x) Meter abnormal answer(ead multi-register) Meter address Function code x Error code CC code low x x x CC code high xc. Write multi-register For example: Host reads float data HY(st alarm hysteresis value.). The address code of HY is, becasue HY is float data( bytes), seizes data registers. ccording to IEEE- standard, the hexadecimal memory code of decimalist float data. is Host request(write multi-register) Start Start Meter Function address address length address code high low high x x x Data length high length low x x Data low Data high Data low CC code Low CC code high x x x x Meter normal answer(write multi-register) Meter address Function code x x length high Start address Start address high low x length low x CC code low CC code high x x Data position error answer:(for example, host request write address index is ) Meter abnormal answer(write multi-register) Meter address x Function code x Error code x Page CC code low xcd CC code high xc KKEWLE-/-

6 . EWL parameter address reflection table. ddress reflection Variable name Default value Byte length st alarm value L - /W st alarm hysteresis HY - /W nd alarm value L - /W nd alarm hysteresis HY - /W. /W. /W - /W. - /W Phase voltage Uc Voltage transform PT Current transform CT nalog output highest value H nalog output lowest value L Phase Voltage Ua Phase voltage Ub Value range ead/write emark B Line voltage Uab C Line voltage Ubc D Line voltage Uca E Phase current la F Phase current lb Phase current lc Phase active power Pa Phase B active power Pb. Phase C reactive power Pc Total reactive power Ps Phase reactive power Qa Phase B reactive power Qb Phase C reactive power Qc Total reactive power Qs Phase apparent power Va Phase B apparent power Vb B Phase C apparent power Vc C Total apparent power Vs D Power factor PFa.. E Power factor PFb F Power factor PFc. Total power factor PFs. Frequency KWH.-. KVarH.-. eserve st larm mode d /W nd larm mode d /W nalog output mode brm /W st larm value unit /W nd larm value unit /W nalog value unit /W /W note /W note /W /W xd Wire connection mode Link Baud rate bud Meter address dd On-off output DO, DO B C /W-ead and Write both On-off input S, S Meter name xd Measure status indication Table note remote control remote measure note -ead Only Page KKEWLE-/-

7 eference table : eference table for alarm output and analog output. Parameter ON/IOFF output code low alarm ON/OFF output code high alarm nalog output code -m Ua ( phase voltage) Ub(B phase voltage) Uc(C hase voltage) Uab (B wire voltage) Ubc (BC wire voltage) Uca (C wire voltage) Ia( wire current) Ib( B wire current) Ic ( C wire current) Pa ( phase active power ) Pb(B phase active power) Pc ( C phase active power) Ps( Total active power) Qa( phase reactive power) Qb( B phase reactive power) Qc ( C phase reactive power) Qs (Total reactive power) Sa ( phase apparent power ) Sb ( B phase apparent power) Sc ( C phase reactive power) Ss ( Total apparent power) PFa ( phase power factor) PFb( B phase power factor) PFc( C phase power factor) PFs (Total power factor) Frequency te:. Connection mode Communication value Menu display - te:. Baud rate Communication value Menu display - te:. larm/nalog Unit.. Communication value Menu display K emark : Measure Satus Indication D D D D D D D D L status : alarm : larm L Status : alarm : alarm The program of byte character code float data converting to decimalist float data float BytesToFloat(unsigned char*pch) float result; unsigned char *p; p=(unsigned char*)&result; * p=*pch;*(p+)=*(pch+);*(p+)=*(pch+);*(p+)=*(pch+); return result; The program of decimalist float data converting to byte character code float data as per IEEE- standard void FloatToChar(float Fvalue,unsigned char*pch) unsigned char*p; p=(unsigned char*)&fvalue; *pch=*p;*(pch+)=*(p+);*(pch+)=*(p+);*(pch+)=*(p+); The program of achieving CC check code unsigned int Get_CC (uchar*pbuf,uchar num) Page KKEWLE-/-

8 unsigned i,j; unsigned int wcrc=xffff; for(i=;i num;i++) wcrc^=(unsigned int)(pbuf[i]); for(j=;j ;j++) if(wcrc &)wcrc =; wcrc=x; else wcrc =; return wcrc; Dimension and Mounting Size Mounting Size Side-face Size Panel Size Connection Drawing DO DO te: ①Voltage input connection terminal,bracket terminals shows phase wire connection method, if there is any change, please turn to the correct diagram on the meter! ②Current * is current input terminal,all input and output must be coincident. Model : (pcs CT) phase wire working mode with central line Current input Model : (pcs CT): phase wire working mode Current input Voltage input B C N Current input via CT Voltage direct input Voltage input * * B C B C N Current input via CT Voltage input via PT Voltage direct input B C Voltage input via PT Explanation :. Voltage input: Input voltage should not be higher than the rated input voltage of meter, otherwise a PT should be used. B. Current input: Standard rated input current is. CT should be used when the input current is bigger than. If some other meters are connected with the same CT, the connection should be serial for all meters. C. Please make sure that the input voltage is corresponding to the input current, they should have the same phase sequence and direction, otherwise data and sign error may occur (power and energy). D. The connection mode of meter which is connected to power network should depend on the CT quantity. For pcs of CT, it should be phase wire connection. For pcs of CT, it shoud be phase wire connection. E. Please pay high attention on the difference between phase wire and phase wire connection, becasue wrong connection may lead to incorrect calculation of power factor, power and energy. Caution:. Power supply connection must be correct.. Pay attention on the phase sequence of voltage signal input.. Current signal input shoudl be connected as per the connection drawing.. Connection mode should accord to the setting of user menu link.. Energy pulse output is open collector output.. Isolation between power supply and circuit board, in case of leakage switch mis-action. Page KKEWLE-/-

INTELLIGENT DIGITAL MULTI POWER METER [DIC-MPM]

INTELLIGENT DIGITAL MULTI POWER METER [DIC-MPM] Feature Suit for LV/ HV voltage system Compact design with all real-time measurement Consist of basic unit and optional modules 10 years back-up of integrated energy data Large LCD, high brightness High