em368 energy meter
Contents
1. What does the INT REV X10 COM amp BAT on the LCD display indicate e INT The INT on the LCD provides quick H lO visual indication of energy integration INT indication keeps blinking once in 5 sec for presence of voltage amp current in any of the three phases PULSE OUTPUT a 6 PULSE OUTPUT TT Operating 1006 EM368 OP277 V01 Page 3 of 4 MODBUS register addresses list Readable parameters from EM368 Address Hex Address Parameter Length Data Register Structure 30000 0x00 Active Energy 2 Float 30002 0x02 Apparent Energy 2 Float 30004 0x04 Reactive Energy 2 Float 30006 0x06 Power Factor Phase 1 2 Float 30008 0x08 Power Factor Phase 2 2 Float 30010 Ox0A Power Factor Phase 3 2 Float 30012 0x0C Average Power factor 2 Float 30014 Ox0E Total kW 2 Float 30016 0x10 Total kVAr 2 Float Readable Writable parameters from EM368 Length Data Pulse output from EM368 meter can be interfaced Acaress Hex Addresa cea diksi Register Structure into a nee through a PLC for on line control of Min value Max value energy content in the process 40000 0x00 New Password 1 9998 1 Integer If the PLC has a self2. EM368 EM368 B selec Operating Instructions e 8 digit LCD with backlight display e User programmable CT primary CT Secondary PT primary amp PT Secondary e User programmable network selection e Memory retention e Password protected energy reset e Potential free Pulse output for energy e 90 to 270V AC DC auxiliary supply e Battery backup optional e RS485 communication MODBUS Protocol SPECIFICATIONS DISPLAY 8 digit LCD display Height 10 5mm LCD INDICATIONS INT Integration of energy X10 Resolution is 10 REV Reverse connected CT or Voltage wiring Communication in progress JuL Pulse output BAT Battery backed display WIRING INPUT 3 4 wire 3 3 wire 2 3 wire amp 1 2 wire system RATED INPUT VOLTAGE 11 to 300V AC L N 19 to 519V AC L L FREQUENCY RANGE 50 60 Hz RATED INPUT CURRENT Nominal 5A Min 11mA Max 6A CT PRIMARY 1A 5A to 10 000A Programmable for any Value Note 1A to 10 000A if CT secondary is 1 else CT primary is 5A to 10 000A CT SECONDARY 1A or 5A programmable PT PRIMARY 100V to 500kV Programmable for any value PT SECONDARY 100 to 500V AC L L Programmable for any value BURDEN 0 5 VA 5A per phase MEASUREMENT Total active Energy kWh Total reactive Energy kVArh Total apparent Energy kVAh Total active power kW Total reactive power kVAr Power factor Individual amp Average Note All energies are resettable
3. 6 CT primary Factory setting 5 To scroll through the 3 pages in reverse direction in configuration mode go to previous page A Increase W Decrease 4 To increase and decrease all parameter values CONFIGURATION SCHEME parameter setting To enter configuration Press 4 amp for 3 sec 1 Password Display PRASSYOld via Oto Y 0 to 9998 V A Press 44 key for next parameter Factory setting 10 2 Change password Factory setting No Display ICNGPASYd VA No Ve V A HUJ No Yes Press 44 for next parameter Note If NO then after pressing 4 key menu will go to network selection 3 New password Display NEYPASYd Press Range V A YJ 0 to 9998 Press 41 for next parameter Press for previous parameter Factory setting 3P 4W V A 3 4 wire 3 3 wire Press for next parameter Note For 2 3 wire 1 2 wire select 3 4 wire network Factory setting 0 4 Network selection 12 Parity Factory setting None Press Display V A Range 5 to 10 000A OR 1 to 10 000A Press for next parameter Press 4 for previous parameter Note 1 to 10 000A if CT secondary is 1 else CT primary is 5 to 10 000A PAP EY Press Range g V A Even Odd None Press for next parameter Press for previous parameter Optional available in EM368 C 13 Stop bit pisay Press Range V A 1 2 Press for next parameter Press 4 for previous parameter Op
4. ACCURACY Class 1 for Active Apparent energy Class 2 for Reactive energy Class 0 5 for Power RESOLUTION PT Ratio x CT Ratio kWh Pulse lt 15 0 01K 0 01K lt 150 0 1K 0 1K lt 1500 1K 1K lt 15000 0 01M 0 01M lt 150000 0 1M 0 1M lt 1500000 1M 1M 21500000 10M 10M NOTE 1 For power resolution is automatically adjusted 2 For power factor resolution is 0 01 3 INT blinks after every 5 seconds if load on any one of three phase is present AUXILIARY SUPPLY RANGE 90 to 270V AC DC 50 60Hz OUTPUT Pulse Output Voltage range 24V DC Current capacity 100 mA max Pulse Width 100 ms 50 ms SERIAL COMMUNICATION Interface standard amp protocol RS485 amp MODBUS RTU Communication address 1 to 255 Transmission mode Half duplex Data types Float and Integer Transmission distance 500 m maximum Transmission speed 300 600 1200 2400 4800 9600 19200 in bps Parity None Odd Even Stop bits 1or2 Response time 100 ms independent of baud rate TEMPERATURE Operating 0 to 50 C Storage 20 to 75 C HUMIDITY 85 non condensing MOUNTING Panel mounting WEIGHT 310 gms Al SAFETY PRECAUTIONS All safety related codifications symbols and instructions that appear in this operating manual or on the equipment must be strictly followed to ensure the safety of the operating personnel as well as the instrument If the equipment is not handled in
5. a manner specified by the manufacturer it might impair the protection provided by the equipment CAUTION Read complete instructions prior to installation and operation of the unit A CAUTION Risk of electric shock WIRING GUIDELINES WARNING To prevent the risk of electric shock power supply to the equipment must be kept OFF while doing the wiring arrangement Wiring shall be done strictly according to the terminal layout Confirm that all connections are correct Use lugged terminals To eliminate electromagnetic interference use of wires with adequate ratings and twists of the same in equal size shall be made Cable used for connection to power source musthave across section of 1 5mm These wires shallhave current carrying capacity of 6A MAINTENANCE 1 The equipment should be cleaned regularly to avoid blockage of ventilating parts 2 Clean the equipment with a clean soft cloth Do not use Isopropyl alcohol or any other cleaning agent INSTALLATION GUIDELINES D CAUTION 1 This equipment being built in type normally becomes a part of main control panel and in such case the terminals do not remain accessible to the end user after installation and internal wiring 2 Conductors must not come in contact with the internal circuitry of the equipment or else it may lead to a safety hazard that may in turn endanger life or cause electrical shock to the operator 3 Circuit
6. breaker or mains switch must be installed between power source and supply terminals to facilitate power ON or OFF function However this switch or breaker must be installed in a convenient position normally accessible to the operator 4 Before disconnecting the secondary of the external current transformer from the equipment make sure that the current transformer is short circuited to avoid risk of electrical shock and injury A CAUTION 1 The equipment shall not be installed in environmental conditions other than those mentioned in this manual 2 The equipment does not have a built in type fuse Installation of external fuse of rating 275VAC 1Amp for electrical circuitry is highly recommended LAL For installing the meter 1 Prepare the panel cutout with proper dimensions as shown below Outline dimensions in mm Panel cutout dimensions in mm t 99 90 5 91 5 lt 99 gt wee 50 Front bezel 5 Side view 91 5 gt Panel Cutout Operating 1006 EM368 OP277 V01 Page 1 of 4 2 Push the meter into the panel cutout Secure the meter in its place by pushing the clamp on the rear side The clamps must be secured in diagonally opposite slots 3 For proper sealing tighten the screws evenly with required torque A CAUTION The equipment in its installed state must not come in close proximity to any heating sources caustic vapors oils steam or other unw
7. excited 24V digital input 40001 0x01 N W selection Value Meaning external 24 VDG supply IS notnesded The kWh pulse is also used to derive average 0 3P 4W 1 Integer kWh information at the PLC 1 3P 3W 40002 0x02 CT Secondary Write Value CT Secondary 1 Integer e ENERGY CONTROLLER 3 5 5A 40003 0x03 CT primary 5A CT Sec 5A 10000A 1 Integer 40003 0x03 CT primary 1A CT Sec 1A 10000A 1 Integer 40004 0x04 PT Secondary 100V 500V 1 Integer 40005 0x05 PT primary 100V 500kV 2 Integer 59 pe 40007 0x07 Batt Back up Value Meaning a Circuit 0 No 1 Integer 1 Ye 12 24V DC es 40008 0x08 Slave Id 1 255 1 Integer 40009 0x09 Baud rate Value Baud rate Pulse output from EM368 meter can be used as 0x0000 300 1 Integer alarm generator or total energy controller by 0x0001 600 interfacing it with presettable counter and control circuits Contactors Relay Trip Circuit ahaa The counter is loaded with the maximum energy 0x0003 2400 consumption When count reaches setpoint it 0x0004 4800 provides output to control circuit to take 0x0005 9600 appropriate action 0x0006 19200 40010 Ox0A Parity Value Parity Order Code Information Oso None Integer e EM368 Without communication version 0x0001 Odd e EM368 C With communication version 0x0002 Even 40011 0x0B Stop bits Value Stop bit Integer 0x0000 Specifications subject to change as development 0x0001 is a continuous process
8. Value Meaning serene a ii ee gies Reset Active E 1 91 22 28476443 1882 Fax 91 22 28471733 a ew Reset kWh 1 SAE ON Integer Toll free 1800 227 353 Website www selec com 40013 0x0D Reset kVAh 1 Reset Apparent Energy Integer E mail sales selec com 40014 Ox0E Reset kVArh 1 Reset Reactive Energy 1 Integer Operating 1006 EM368 OP277 V01 Page 4 of 4
9. anted process by products EMC Guidelines 1 Use proper input power cables with shortest connections and twisted type 2 Layout of connecting cables shall be away from any internal EMI source PUBS PULSE O P RS485 CONNECTION DIAGRAM l faa FRONT PANEL DESCRIPTION BPF REV JUL BAT gt ooagogRA McWhr MkVAhh x10 Keys Description Online pages Sr n No Keys Function To view individual and average 1 PE W power factor 2 P A To view total active power To view total reactive power To view total reactive amp apparent energy NOTE By default total active energy kWh will be displayed all the time and at momentary key press unit shall display the corresponding page for 5 sec 5 CT secondary Factory setting 5 11 Baud rate Factory setting 9600 Keys Description Configuration Sr No Key press Functions Range 300 600 1200 Display fe SEC Display bd FALE Press Range 2400 4800 1 To enter into configuration mode 4 amp for 3 seconds via via tAorsA 2 9600 amp 19200 V A Press for next parameter Press 1 for next parameter To scroll through the 2 pages in forward direction lt go to next page in configuration mode Press lt for previous parameter Press for previous parameter Optional available in EM368 C
10. next parameter Press lt for previous parameter Note On pressing key configuration will go to network selection page If yes selected unit will be formatted to factory setting TYPICAL WIRING DIAGRAM tine aN Loa INE gt gt o L 3 PHASE 4 WIRE COMMONLY USED WIRING DIAGRAM 2 7D ta T i 3 4 wire 3 CT s rt LINE R OY LOAD i SH H 4 amp K Exit configuration mode e Press 4 amp 4 key for 3 sec in configuration mode e Do not press any key for 30 sec in configuration mode Power OFF and power ON the unit again lo VN N PULSE OUTPUT i b PULSE OUTPUT T T 13 1 Pressing 4 key will save the value of the sill i5 A T current parameter and move on to next m A E E E AE ET PeR LP 2 3 wire 2 CT 3 4 wire 3 CT s amp 3PT s fue AN L1 LOAD LINE D LOAD 2 Continuous operating of W or A key makes parameter value update speed faster in 3 stages after 7 seconds 3 In configuration menu repeated pressing of 4 key will allow toggling between all the configuration parameters RS232 RC485 CONVERTER Suggested terminating resistor 120 ohm watt
11. parent Energy Factory setting No reading which must be multiplied by 10 to 3 3 wire 2 CT s gt D u get actual kWh kVArh kVAh consumed ph L2 Display PSE PUTAR Press Range via No Yes Press for next parameter Press for previous parameter Note User should note the reading before resetting LINE REV REV on the LCD gives the indication of reversal of one or more CT connections Phase In such cases meter may not indicate the correct energy consumption The CT should be connected to the meter with correct polarities s This symbol on the LCD shows that the communication is in progress BAT BAT on the LCD shows that the unit is working on battery in absence of auxiliary supply The display will turn OFF after 48 hrs when operated in battery backup mode continuously No measurement or output 18 Reset Reactive Energy Factory setting No Display PSEPUAPH Press Range V A HOJ No Yes Press for next parameter Press 4 for previous parameter will take place in this mode oi ts en Ra 9 4 e JuL This symbol on the LCD indicates that a eamh 19 Default value Factory setting No pulse output is available T 1 a 30 3 wire 2 CT s amp 2PT s 1 2 wire 1 CT Display GEFAULE via Noe V A HOJ No Yes Press lt 4 for
12. tional available in EM368 C 14 Reset energy Display PSE ENPS via Nal Ye V A HUJ No Yes Press for next parameter Press for previous parameter Note If NO then after pressing 4a key menu will go to Network selection Factory setting 1 7 PT secondary Display PE SEC via ee V A 100 to 500V AC w Press for next parameter Press for previous parameter Factory setting 350 Factory setting No 8 PT primary Factory setting 350 Press 3 5 m Range V A 2J 100V to 500kV Press 44 for next parameters Press for previous parameter 9 Battery backup Display b AEE GRUP via No ve V A HUJ No Yes Press 1 for next parameter Press for previous parameter Factory setting No 15 Password V A 1 to 9999 Press 4 for next parameter Press 4 for previous parameter Note Password is configuration password 1 Factory setting 11 10 Slave ID Press Range V A 1 to 255 Press 44 for next parameter Press for previous parameter Optional available in EM368 C Factory setting 1 16 Reset Active Energy Display PSE LY Press Range via No Yes Press for next parameter Press lt for previous parameter Note User should note the reading before resetting Operating 1006 EM368 OP277 V01 Page 2 of 4 Factory setting No Display Description X10 X10 on the LCD is ON when the 2 3 wire 2 CT s amp 2PT s resolution is 10 It is the indication of count NE 17 Reset Ap
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