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1. gt P p ea P1 P2 P3 P4 A lis Min Max Min Max Min Max Maes Min Max eee L1 Voltage L2 Voltage L3 Voltage Atlan L1 Current Min Max Min Max Min Max Min Max Min Max Min Max 3PHAvg 4 3PhPowe gt 3PhVa 4 3PhWatt 4 los Watt Fador Power Power L3 Curent L2 Curent A de de de 16 THD Volt Curr 4 00 09 gt 10 19 4 20 29 gt 30 31 gt 10009 h 10 19 HI 2029 4 HI 30 31 ve vB ai 2 13 v Harmonics 14 gt Harmonics 74 gt Harmonics Harmonics 1 Harmonics gt Harmonics Clock 18 Calendar Y St St 49 1 Storage Storage orage Avg Powers lt gt 14 gt Harmonics lt gt Samples 25 Digital Digital Output lt Input lt Y 21 Wamings Wamings Y Connection lt gt Battery lt A options A D 22 Info Note Page displayed only if the Digital Input is set as COUNTER Y 1 31 EMA11 USER MANUAL 10 2 MEASURES VISUALIZATION Variable reading of three phase system e V kV RMS three phase system voltage gt V RMS three phase system current gt I W kW MW GW three phase system active power gt W PF three phase syst
2. 1 ELECTRICAL MULTIFUNCTION ANALYZER User Manual IM 135 U M v 4 0 EMA11 IM135 U M v4 0 doc megocon EMA11 USER MANUAL Information in this document is subject to change without notice and does not represent a commitment on the part of Megacon This documentation is consigned to the customer to enable the correct and safe operation of the instrument any other use of documentation is strictly prohibited The information contained herein is the property of Megacon and by law no part of it may be reproduced transcribed stored in any retrieval system or translated into any language by means even for internal purposes by the customer without the express written permission of Megacon In addition no part of this manual may be transmitted in any form by any means including photocopying and recording for any purposes without the express written permission of Megacon In case of Copyright violation the customer is directly responsible TERMS OF WARRANTY The warranty is valid for the period of twelve months after material receipt The warranty covers free repair or replacement of equipment parts which are recognized as faulty due to manufacturing defects Warranty does not cover those parts which results defective due to misuse or improper use incorrect installation or maintenance operation by unauthorized personnel damage during transportation or which in any case do not show manufacturing defects of the equip
3. Variable reading time band energy counters option 20 pages to display the active energy counters positive and negative and reactive capacitive and inductive divided in 4 programmable time bands P1 P2 P3 P4 The 20 pages are consumption present year and the two previous consumption present month and the two previous consumption of today and the two day previous and total counter of bands In a voice of menu setup paragraph 11 6 it s possible to program times days and months in which the energy count is added at the different bands External signals connected to digital inputs and with a right programming can change the bands in the time If the energy is Heavy the values are displayed in MWh and MVArh Variable reading MIN amp MAX values 12 pages selected by left and right keys show minimum and maximum of the value of 12 parameters taken after last reset Date and time of reading are displayed on these pages Its possible to see the values of these parameters e three phase system voltage gt V e 1 phase voltage V 1 L2 phase voltage V2 L3 phase voltage Vi3 three phase system current gt I L1 phase current 1 1 e L2 phase current 112 e 3 phase current 1 e three phase system active power gt W e three phase system apparent power gt VA e three phase system power factor gt PF e three phase system average active power gt Wav 37
4. LI o L1 e L2 L3 e OQ NO NE e e L1 L2 e Q S 1 mm 52 lt L3 e N Pl P2 4 wires insertion 3 current transformers and 2 voltage transformers 18 EMA11 USER MANUAL 7 PLUG IN MODULE INSERTION oee the following picture to insert the plug in module HF N 1 Its only possible to see the two slots shown in the picture when the rear door is removed To remove the rear door it s necessary to act in the zone indicated of the arrow on the retention lever The first slot is used to insert the option board of the digital input digital output analog output and serial port a 60 6 digital inputs b 201 200 2 digital inputs 2 digital outputs c 400 4 digital outputs d 2AO 2 analog outputs e 4AO 4 analog outputs f COM2 1 serial port The second slot is used only for the option memory MEM Ram 1Mbyte Warning if you insert the option board in the wrong slot you can damage the instrument 19 EMA11 USER MANUAL 7 1 INSERTION PROCEDURE Only a qualified and authorized technical person can insert the plug in module Follow this procedure to operate in the maximum security Cut off the power supply of instrument and disconnect all inputs and all outputs Remove the seal from the
5. system 41 EMA11 USER MANUAL 11 2 MAIN MENU SETUP The main menu or SETUP page is configured in the following way GENERAL includes the settings of KCT current ratio KTV voltage ratio MODE 4 wires 3 wires Aron MEASURE TIME time constant of measure filter WARNINGS B LIGHT Backlit on display timing DEF PAGE TIME time of wait before to come back to default page SYNC frequency synchronization CLOCK clock settings PASSWORD pin code to avoid that someone not authorized could modify the setup ACCESS code to enable option function like harmonics and or time bands USER PAGE to set the measures to display in user page and V UNBALANCE SERIAL COMM includes the settings of PROTOCOL ASCII or MODBUS ADDRESS logical number node or address COM1 serial port 1 integrated 2 serial port 2 expansion board AVERAGE includes the settings of SYNC AVG synchronism of calculation average TYPE fixed or mobile TIME AVG integration time for the calculation of the average parameters and DT MOBILE sliding time of window mobile ENERGY includes the setting of TYPE energy counters in kWh or in MWh PRESET allows to set the initial value of total ENERGY counter and the generic COUNTERS and TIMEBANDS with all parameters to manage the power consumption in different periods STORAGE includes the settings of MIN MAX AVERAGE POWERS HARMONICS harmonic storing up to the 31 order for both cur
6. e VA KVA MVA GVA apparent power L1 S4 e VA kVA GVA apparent power L2 S e VA KVA MVA GVA apparent power L3 33 Variable reading phase power factor e P F three phase system power factor XPF e P F power factor L1 PF e P F power factor L2 PF e P F power factor L3 PF3 cmn Variable reading phase coso e CosQ three phase system cos Xcoso e coso cose L1 e coso coso L2 cosq e coso cose L3 cosas 35 EMA11 USER MANUAL Phasor option Fresnel diagram Phase angles in degree voltage current and PF for each line User page The user can define in the setup menu General User Page the variables to display in this page Variable reading counters This page shows the 8 counters available Note These pages appeared only if the digital inputs are set like COUNTERS Variable reading consumption of active and reactive energy Normal e kWh positive active energy counter kWh e kWh negative active energy counter kWh e kVArh inductive reactive energy counter kVArh e kVArh capacitive reactive energy counter kVarh Note If Energy Type is set like Heavy the measure units are expressed in MWh and MVATrh Variable reading average powers e W kW MW GW average active power P e VAr kVAr MVAr GVAr average reactive power Q 36 EMA11 USER MANUAL Max Demand Max demand of each band and total
7. 41 42 43 44 44 45 47 48 49 51 52 52 52 54 55 55 EMA11 USER MANUAL 1 MAIN INFORMATION 1 1 INTRODUCTION EMA11 was engineered and tested in compliance with IEC 348 class 1 standards for operating voltages up to 600 Vac rms considering the VDE 0110 group C isolation standards for operating voltages up to 500 Vac rms The present manual contains all of the information warnings that must be followed up by the operator to ensure a right use of the equipment and to maintain the safe operating conditions 1 2 DESCRIPTION The 11 is an instrument which has been designed to monitor store and analyze all electrical variable in a distribution line All the relevant data are displayed and if desired stored on internal RAM and transmitted to a remote PC RS485 standard on which the compatible management software has been installed It is possible to monitor via digital outputs 2 dig out standard alarms sirens or strategically factory loads EMA11 with optional harmonic analyzes can carry out network harmonic content analyzes with FFT method up to the 31 harmonic very useful to locate network disturbances The EMA can perform accurate deep and complete energy analyzes A fundamental feature of EMA11 is the easy way to integrate new additional options and the upgrading of the firmware using serial port and flash technology All parameters are displayed on a graphic LCD display light back with a resolution of
8. If the value is 0 from the last day of each month the energy is increased in the counter of the next month If the value is between 1 and 15 from the day fixed the energy is increased in the counter of the actual month before of this value the energy is increased in the previous month If the value is between 16 and 31 from the day fixed the energy is increased in the counter of the next month before of this value the energy is increased in the actual month If the actual month has fewer days than the value fixed the energy will be increased into the next month counter from the last day of the month Period ld period number 15 periods to set different time bands For each period it s possible to program BAND to program the selected period Start Stop to program the start and the stop of the selected period Month is a number from 1 to 12 that defines the months 1 January 2 February ecc of the year corresponding at the start or the end of the selected period Day is a number from 1 to 31 that defines the day of the month corresponding at the start or the end of the selected period 45 EMA11 USER MANUAL WeekDay defines the days of the week in the selected period in which the tariff programming is active Use the LEFT and RIGHT keys to select the day of the week and the UP and DOWN keys to enable or disable the day Time 1 12 defines the time of the day in which the energy counters are
9. 128x128 dots Displaying and programming mode are carried out by means of a 5 buttons keyboard 1 3 CE CONFORMITY AND STANDARDS The instrument was tested in compliance with EMC 89 336 EEC and complies with the following standards EMISSIONS EN 50081 2 1992 EN 55022 CLASS B CISPR 22 IMMUNITY EN 50082 1 1992 EN 61000 6 2 SAFETY EN 61010 1 EMA11 USER MANUAL 2 TECHNICAL FEATURES 2 1 GENERAL SPECIFICATIONS Power supply Auxiliary voltage 85 265 V 50 60 Hz dc 20 60 V 50 60 Hz dc option Isolation voltage 3 00 Vac rms x 1 minute Voltage input 3 inputs range 10 600Vrms between phase phase Over voltage up to 750 Vac permanent beyond this value it is imperative to use voltage transformers Over voltage category III fixed installation Pollution degree 2 normally not conductive temporary conductive for condensation Resistor input gt 2 MO Burden 0 2 VA Current input Model EMA11 Model EMA11 1A 3 isolated inputs internal CT range 10mA 5A rms 4mA 1A rms 10A 100A for 1 second 2A 10A for 1 second 0 2 VA 0 04 VA Consumption 4VA typical 6VA max full optional Serial output RS485 RS232 configurable on board half duplex isolated signals Tx Rx Gnd Programmable baud rate from 1 200 to 19 200 bps Communication protocol standard ASCII and MODBUS RTU Input signals 2 passive opt isolated inputs 1000 V 12 24 Vdc up to 8 using options Output signals 2 photomos outpu
10. 28 EMA11 USER MANUAL 8 4 5 OPTION RS485 RS232 COM2 PLUG IN GO OW ON OFF Modem Personal Computer RS485 RS232 SHHHHEHS Warning The hardware modification of instrument will change the Setup in the default configuration 29 EMA11 USER MANUAL 9 USE 9 1 FUNCTION KEYS e UP amp DOWN KEYS The UP and DOWN keys allows to skip through the real time pages and to select the programming level or to modify values during the input in the setup menu EUG e LEFT amp RIGHT KEYS The LEFT and RIGHT keys allow to visualize the real time sub pages and to move the cursor in the field of input data in the setup menu To skip from real time pages and to go in the menu setup it s necessary to press simultaneously both these keys To come back at real time pages to repeat the same operation SELECT SELECT Other functions allow to see average values minimum and maximum storage and harmonic components When it s possible to accede at these function two little arrows appear on the display s bottom bar ENTER KEY ENTER key if pressed for at least 3 seconds on any of the real time pages instantaneous value pages sets the current visualized page as MAIN In the SETUP menu the ENTER key allows to ent
11. KVArh 0 99999999 9 COUNTERS Counter1 0 99999999 9 Counter8 0 99999999 9 TIMEBANDS Update day 1 31 Period Id 01 15 WeekDay Time StartHour StartMin Type P1 P2 P3 P4 P5 P6 P7 P8 Time12 StartHour StartMin Type P1 P2 P3 P4 P5 P6 P7 P8 Note HOLIDAYS Day Index 1 40 Month 1 12 Day 1 31 STORAGE MIN MAX Enable On Off Measures list of parameters Rate min 1 9999 AVG POW Enable On Off HARM Enable On Off DIGITAL OUTPUT Out Index 1 6 Type AlwaysOff EnergyPulse Min Thresold MaxThresold Band AlwaysOn Measure Code list of parameters Value Time 50 500 Hysteresis 0 99 Inf Value Sup Value DIGITAL INPUT Type Not used Clock Sync Period Counters Ext DI COUNT gt INPUT K1Dig Inp 0 8 K8Dig Inp 0 8 COUNTER NAME Cnt1 User Def KWh KWh KVarh KVarh Water Gas Cnt8 User Def KWh KWh KVarh KVarh Water Gas SET WEIGHTS K1 0 1999 99 K8 0 1999 99 ANALOG OUTPUT Out Index 1 4 Type 0 20mA 4 20mA Measure Code list of parameters Min Max RESET RESET MEASURES All Yes No Energies Yes No TimeBands Yes No Min Max Yes No Reset Setup Yes No Reset Storage Yes No Reset Counter Yes No Reset Max Demand Yes No Reset Global Yes No EXIT SETUP Remember always to confirm the entering exiting or programming always with the ENTER key the last modification will be kept in the non volatile memory of the equipment until further reset of the
12. available VL1 N 5 Vi2 N 2 2 TC 142 VL2 L3 VL3 L1 V lavg lmaxavg 4avg7lL2avg L3avg lLimaxavg lLomaxavg u IN INmaxavg PF PFiz PFs PF COSo Is COS L2 COS L3 COS Si1 S12 S13 VA S VA 2 Pas W W Q4 Qi Qi3 VAr VAr Pave W Qave VAr Wh Wh VArh VArh TOTAL HARMONIC DISTORTION THD CURRENT AND VOLTAGE HARMONIC ANALYZES Option Analyzes up to the 31 harmonic of both voltage and current for each phase Vi cv Vion Visi 111 lio Vo EMA11 USER MANUAL 2 6 MEASURING amp CALCULATION FORMULAS Phase Voltage RMS Line Current RMS Active Power Reactive Power Appearent Power Coso Power Factor Active Energy Why Iw L 0 10 EMA11 USER MANUAL Reactive Energy Line Voltage 3 Phase Line Voltage 3 Phase System Current 3 Phase Active Power 3 Phase Reactive Power 3 PhaseAppea rent Active Energy Reactive Energy Harmonic analyzes Cooley Tukey algorithm L2 V p3 V 132 V3o 3 W3o W TW ro TW 73 O39 Q 1 9757973 A3 Aja CO Wh3 Whagdt 0 CO 0 DEM N 1 Hk X ho cos 289 h n sin 2 0 for 0 lt k lt N l 0 64 11 EMA11 USER MANUAL 3 INSTRUMENT DESCRIPTION The front panel of the EMA11 is de
13. button one or more time depending of the branch in which you are 12 LIST OF MEASURES To program the variables in setup for digital outputs alarm and pulse analog outputs it s necessary to use these codes 3Ph V Three phase voltage L1N V L1 phase voltage L2N V L2 phase voltage L3N V L 3 phase voltage L12 V Voltage between L1 and L2 phases L23 V Voltage between L2 and L3 phases L31 V Voltage between L3 and L1 phases 3Ph l Three phase current L11 L1 phase current L2 L2 phase current L3 L 3 phase current THDI L1 THD current L1 phase THDI L2 THD current L2 phase THDI L3 THD current L3 phase 3Ph PF Three phase power factor L1 PF L1 phase power factor L2 PF L2 phase power factor L3 PF L3 phase power factor 255 EMA11 USER MANUAL 3 Ph Cos L1 Cos L2 Cos L3 Cos 3Ph VA L1 VA L2 VA L3 VA 3Ph W L1W L2 W L3 W 3Ph VAr L1 VAr L2 VAr L3 VAr 3Ph Wh 3Ph VArh 3Ph Wh 3Ph Varh THDV L1 THDV L2 THDV L3 Avg W Avg Avg Var Temp L1Avg l L2Avg l L3Avg l Neutr l Vunb lunb KFact1 KFact2 KFact3 Three phase Cos L1 phase Cos L2 phase Cos L3 phase Cos Three phase apparent power L1 phase apparent power L2 phase apparent power L3 phase apparent power Three phase active power L1 phase active power L2 phase active power L3 phase active power Three phase reactive power L1 phase reactive power L2 phase reactive power L3 phase reactive po
14. lower of 2 3V Warning If there s no battery or its voltage level is lower than 2 3V the instrument will lose all storing data in RAM minimums maximums energy counter and the setup General info Information page shows the main instrument configuration as model firmware version serial number inputs outputs configuration protocol communication etc These information s identify the instrument and its configuration before possible upgrade and for this reason they are very important 40 EMA11 USER MANUAL 11 SETUP 11 1 SETUP ITEMS GENERAL KCT 0 015000 KVT 0 01 5000 Mode 4 wires 3 wires Aron Measure Time 0 50 sec Warnings Yes No B Light 0 360 DefPage Time 10 900 sec SYNC Mode EXT INT Freq 5 500 CLOCK Set Clock Day Light Enable Disable PASSWORD Value 0000 9999 ACCESS 000000 999999 User Page Measure 1 list of parameter Measured list of parameter V Unbalance V V SERIAL COMM Protocol ASCII Modbus Address Modbus 017255 ASCII 017128 COM1 Baud 1200 19200 Parity none even odd DataBit 7 8 Type RS232 RS485 COM2 Baud 1200 19200 Parity none even odd DataBit 7 8 Type RS232 RS485 AVERAGE Sync Avg Int Rtc Ext DI Int Ext Type fixed Mobile Time Avg 1 2 3 5 6 10 12 15 20 30 60 dt Mobile 10 20 30 1 2 3 5 10 15 20 30 ENERGY Type Normal Heavy PRESET ENERGIES KWh 0 99999999 9 KWh 0 99999999 9 KVArh 0 99999999 9
15. ratio KVT voltage transformer ratio Mode type of connection Measure Time filter time in the visualization measure Warnings B Light display backlight on time Def Page Time the time before to come back to default page Sync frequency synchronization Clock clock and calendar Password setup Access code for option function User Page and V Unbalance KCT allows to set the current transforming ratio if CT is used in order to show the measured values in primary terms The KCT range is 0 01 5000 00 11 standard KCT external CT rate If CTs are not used set KCT 1 l e Set the KCT 40 if the current transformer of 200 5A is used EMA11 1A KCT external CT rate 5 If CTs are not used set KCT 0 2 l e Set the KCT 40 if current transformer of 200 1A is used KVT allows to set the voltage transforming ratio if VT is used in order to show the measured values in primary terms The KVT range is 0 01 5000 00 l e Set the KVT 200 if voltage transformer of 20000 100V is used Mode concerns the operation or measuring mode it is possible to select 4 wires 3 wires and Aron following the connection mode as described on chapter 6 4 Measure Time is the filter time in the visualization measure The range is 0 50 The 0 value indicates none average on the measures others values indicates the average time in seconds If this value is very big and the average powers storing is active the values stored could be wro
16. rear door Open and remove the rear door Its necessary to proceed with a lot of accuracy without touching other components because there are residual voltages Before starting the operation of insertion of the plug in module in the slot number 1 it s necessary to remove the plug in terminals block If you must insert plug in modules in both slots it s advisable but not necessary to insert before the board on slot number 1 and after the module on slot number 2 Insert with a lot of accuracy the module with an angle of 30 in the down direction respect the slot of insertion and with upper position the component side see the following picture Rotate the board in the upright direction until the two hooks hold the board which should be at the same level of the slot see the following picture Close the instrument using the rear door with the hole in which will enter the plug in module of the slot number 1 You can use a screwdriver to help you to centre the terminal block with the hole of rear door It s not necessary to use the rear door with the hole for the memory board of the slot number 2 10 Replace all connections and turn on the instrument Check in the relative page that the instrument 7 2 recognizes the board OPTION BOARD SLOT 1 DEFINITIVE POSITION ROTATION SENSE 30 OPTION BOARD INSERTION POSITON SLOT 2 DISCONNECTION PROCEDURE Only a qualified and authorized technical person can insert the p
17. select the type of functioning as Always Off digital output is always disabled Energy Pulse pulse emission proportional at energy registered and depending the programming used valid only for Energies Min Threshold the output is enabled if the value of the selected variable is lower of the programmed value Max Threshold the output is enabled if the value of the selected variable is higher of the programmed value Band the output is enabled if the value of the selected variable is lower of the programmed minimum value or higher of the programmed maximum value Always On digital output is always enabled Measure Code is the measure see cap 12 to associate at the digital output To program the digital output as pulse emission it s necessary to select an energy variable Value intervention threshold value i e for overcoming 340V program 340 0 or 150kW program 150000 0 or pulse weight i e if the active positive energy pulses must be emitted every 1 kWh program 1 00 programmable from 0 01 to 100 kWh pulse Time is the threshold delay for intervention expressed in second 0 655 seconds or duration time of Pulse expressed in milliseconds 50 500 ms Hysteresis it s the percentage of alarm s value under which the alarm come back in off condition its programmable from 0 to 99 example max threshold of active power at 150kW with 10 hysteresis means the alarm come back in off condition when the active pow
18. while a signal 12 24 Vcc on the digital input 2 is used to synchronize the average and the average powers storing if enabled with a de bounce time of 30 seconds The digital inputs are set automatically to Ext DI if the Sync Avg is set to Ext DI or Int Ext No congruent operation of digital input type and Sync Avg will involve the visualization of the warning message on the display see for example in this figure 49 EMA11 USER MANUAL An item selected in the menu TYPE of the digital inputs will be accepted only if the reset of the counters is confirmed Count gt Input define the correspondence between the index of the counter and the digital input It s necessary to set the index of the digital input to join at each counter used The counter isn t able to count if the index inserted is O Note It s possible to join the same input at more counters Counter Name allows to define the name for each counters Using the up and down keys its possible to choose the counter that will be selected with the Enter key In the same way it s possible to choose and set the name of the counter The first item allows to set a user definition the others are names already fixed USER DEF The name of the counter is defined by the user When this item is selected a field appear to input the name of the counter To input the name it s necessary to use the right and left keys to select the type to modify while it s possible
19. will change the Setup the default configuration The next picture shows the option board position and the terminal block numeration EHE in 1211109 8 7 6 5 4 2 1 8 3 1 6 DIGITAL INPUTS OPTION 601 PLUG IN After the installation of this optional board the instrument will be equipped with 8 digital inputs 2 standards 6 optional and 2 digital outputs This module has an output 0 12Vcc usable like power supply for digital inputs The following table shows the pin out of this plug in module x po INPUTS3 and4 INPUTST and8 INPUT4 O INPUT8t INPUTS s INPUTS 5 and6 0 INPUTG t O T12Vcc O 8 3 2 2 DIGITAL INPUTS 2 DIGITAL OUTPUTS OPTION 2DI 2DO PLUG IN After the installation of this optional board the instrument will have 4 digital inputs and 4 digital outputs See in the following table the pin out of this plug in module OUTPUT 3 OUTPUT 3 OUTPUT4 EE S S S S INPUT 3 INPUT 3 OUTPUT 4 OUTPUT 4 E INPUT 4 INPUT 4 93 EMA11 USER MANUAL 8 3 3 4STATIC DIGITAL OUTPUTS OPTION 4DO PLUG IN The option has 4 static digital outputs The instrument will manage 2 digital inputs and 6 digital outputs all static s
20. ANUAL The 11 gives a current signal range 4 20mA or 0 20mA proportional to the measures of the selected parameter The output is bi directional the current can be directly or inversely proportional to reference value programmed Bi directional means reversal of reference value and not inversion of current Examples 20 mA S Apparent Power lt lt Min 2000VA Max 10000VA lt E lt E EY lt pem P Active power P 111111111 Min 1000W 0 Max 1000W lt lt E E ull js P F Power Factor gt 0 5 0 5 lt E N lt E Reactive power Tiili Min 2500VAr Max 7000VAr 8 3 6 4 ANALOG OUTPUTS OPTION 4 PLUG IN The instrument with this option will manage 2 digital inputs 2 digital outputs and 4 analog outputs The pin out is showed in the following table OUTPUT 3 5 OUTPUT 3 OUTPUT 2 OUTPUT 4 OUTPUT 4 Information of the connection and example of management of the outputs are explained in the previous paragraph OUTPUT 1 OUTPUT 1 2 8 3 9 4 __10 5 6 12 25 EMA11 USER MANUAL 8 4 SERIAL OUTPUTS Through the combination of an asynchronous serial RS485 and RS232 communication line it is possible to exchange information between the instrument and PC PLC or other compatible systems All transmitted characters are in ASCII American Standard Co
21. EAL TIME CLOCK Accuracy 5 PPM standard CEI EN 61038 2 3 PROGRAMMABLE PARAMETERS SETUP SECTION VT and CT ratio Mode insertion type 4 wires 3 wires Aron Integration time of Average parameters Sampling frequency Address or logical number of equipment Date and time Time bands of power consumption in different periods Storage section Min max Harmonics average power and Sampling values All parameters concerning the input output section serial port analog output digital input and output Preset energy counters EMA11 USER MANUAL 2 4 MEASURED VARIABLES PHASE VOLTAGE Rms LINE CURRENT Rms FREQUENCY TEMPERATURE 2 5 CALCULATED VARIABLES LINE VOLTAGE Rms THREE PHASE SYSTEM VOLTAGE Rms THREE PHASE SYSTEM CURRENT Rms AVERAGE THREE PHASE SYSTEM CURRENT MAXIMUM AVERAGE THREE PHASE SYSTEM CURRENT AVERAGE LINE CURRENT MAXIMUM AVERAGE LINE CURRENT NEUTRAL CURRENT AVERAGE NEUTRAL CURRENT MAXIMUM AVERAGE NEUTRAL CURRENT POWER FACTOR THREE PHASE SYSTEM POWER FACTOR COSo THREE PHASE SYSTEM COSo APPARENT POWER THREE PHASE SYSTEM APPARENT POWER ACTIVE POWER THREE PHASE SYSTEM ACTIVE POWER REACTIVE POWER THREE PHASE SYSTEM REACTIVE POWER AVERAGE ACTIVE POWER AVERAGE REACTIVE POWER THREE PHASE SYSTEM ACTIVE ENERGY THREE PHASE SYSTEM TRANSFERRED ACTIVE ENERGY THREE PHASE SYSTEM INDUCTIVE REACTIVE ENERGY THREE PHASE SYSTEM CAPACITIVE REACTIVE ENERGY Total counters and time bands are
22. EMA11 USER MANUAL Variable reading Thd of voltage and current harmonics orders option A page shows the total harmonic distortion of voltage and of current e Thd total harmonic distortion of voltage L1 phase Thd Thd total harmonic distortion of voltage L2 phase Thd Thd total harmonic distortion of voltage L3 phase Thds Thd total harmonic distortion of current L1 phase Thd Thd total harmonic distortion of current L2 phase Thd e Thd total harmonic distortion of current L3 phase Thd 8 pages show the harmonic components up to 31 of voltage and current of each line in numerical form ex a Variable reading total harmonic distortion and harmonic components of voltage and current option 6 pages of visualization of THD and harmonic components up to 31 with fundamental frequency 50 60Hz of voltage and current of each line expressed in numerical and graphic form Once entering in the harmonic analyzes page it may be possible with the right enter amp left enter keys to page through the order of the harmonics up to the 31 The pages show the histograms the order of the harmonic and value referred to the fundamental 38 EMA11 USER MANUAL 10 3 STATUS AND INFORMATION PAGES The status and or information pages include e the displaying of clock and internal calendar e the condition of internal RAM memory e the condition of digital I O e warnings e general info of the inst
23. MANUAL 8 2 STANDARD DIGITAL OUTPUTS The schematic of the 2 standard digital outputs PHOTOMOS of EMA11 is represented on the following figure 12 230 Vac dc 150 MAX LOAD I MAX LOAD 12 230 Vac dc SHHHHHHS Power supply from 12 to 230 Vac dc load must not exceed 150mA typical resistor value of PHOTOMOS outputs closed contact is 80 Ronmax 120 Each output may be programmed by the operator on min max threshold external band always ON or and pulse output consult the chapter 11 8 The signs and on outputs in the picture have electric meaningless If long distances must be covered the wires connected to the EMA11 needs to be wired in a separate channel from the power supply cables if an intersection occurs between the power supply cable and the analog wires please remember to cross the intersection at 90 degrees in order to cut the generated magnetic fields 22 EMA11 USER MANUAL 8 3 INPUT OUTPUT OPTIONS PLUG IN MODULE Its possible to use this following plug in module option 6 digital inputs 601 2 digital inputs 2 digital outputs 201 200 4 static digital outputs 4DO 4 relay digital outputs 4DO 2 analog outputs 2AO 4 analog outputs 4AO Q O O O o wer NS Warning The hardware modification of instrument
24. PLY 16 6 2 VOLTAGE INPUTS 17 6 3 CURRENT INPUTS 17 6 4 WIRING DIAGRAMS 17 7 PLUG IN MODULE INSERTION 19 7 1 INSERTION PROCEDURE 20 7 2 DISCONNECTION PROCEDURE 20 8 INPUT OUTPUT DEVICES 21 8 1 STANDARD DIGITAL INPUTS 21 8 2 STANDARD DIGITAL OUTPUTS 22 8 3 _ INPUT OUTPUT OPTIONS PLUG IN MODULE 23 8 3 1 6 DIGITAL INPUTS OPTION 6DI PLUG IN 23 8 3 2 2 DIGITAL INPUTS 2 DIGITAL OUTPUTS OPTION 2DI 2DO PLUGIN 23 23 EMA11 USER MANUAL 8 3 3 4 STATIC DIGITAL OUTPUTS OPTION 400 PLUG IN 8 3 4 4 RELAY DIGITAL OUTPUTS OPTION 400 PLUG IN 8 3 5 2 ANALOG OUTPUTS OPTION 2 PLUG IN 8 3 6 4 ANALOG OUTPUTS OPTION PLUG IN 8 4 SERIAL OUTPUTS 8 4 1 RS485 CONNECTION NOT SHIELDED 8 4 2 RS485 CONNECTION SHIELDED 8 4 3 RS232 CONNECTION 8 4 4 MODEM CONNECTION 8 4 5 OPTION RS485 RS232 2 PLUG IN 9 USE 9 1 FUNCTION KEYS 10 REAL TIME VALUES 10 1 VISUALIZATION TREE 10 2 MEASURES VISUALIZATION 10 3 STATUS AND INFORMATION PAGES 11 SETUP 11 1 SETUP ITEMS 11 2 MAIN MENU SETUP 11 3 GENERAL 11 4 SERIAL COMM 11 5 AVERAGE 11 6 ENERGY 11 7 STORAGE 11 8 DIGITAL OUTPUT 11 9 DIGITAL INPUT 11 10 ANALOG OUTPUT OPTION 11 11 RESET 11 12 EXIT SETUP 12 LIST OF MEASURES 13 PROBLEMS AND SOLUTIONS 14 EMA SERIAL COMMUNICATION PROTOCOL 15 Notes 4 24 24 24 25 26 26 27 27 28 29 30 30 30 31 32 39 41
25. The pin out is showed in the following table OUTPUT 3 OUTPUT 3 8 OUTPUTS 9 10 122 OUTPUT 6 OUTPUT 6 OUTPUT 4 ss 8 3 4 4 RELAY DIGITAL OUTPUTS OPTION 400 PLUG IN The option has 4 relay digital outputs The instrument will manage 2 digital inputs and 6 digital outputs 2 static and 4 relays The pin out is the same of the option before NEN NEN 2 3 4 OUTPUTA 5 6 8 3 5 2 ANALOG OUTPUTS OPTION 2A0 PLUG IN This option will allow to manage 2 digital inputs 2 digital outputs and 2 analog outputs See the chapter 11 10 to program 0 20mA or 4 20mA these outputs The following table shows the pin out 9 OUTPUT 2 10 OUTPUT 2 101 OUTPUT 1 42 OUTPUT 1 Output is at galvanic insulation with maximum load impedance of 1500 The connection to other peripherals as recorders ammeters remote indicators etc must be carried out using a maximum cable size of 2 5mm 0 20mA 0 20mA 4 20mA 4 20mA Max 1500 10987654 O If long distances must be covered the wires connected to the EMA11 needs to be wired in a separate channel from the power supply cables if an intersection occurs between the power supply cable and the analog wires please remember to cross the intersection at 90 degrees in order to cut the generated magnetic fields 24 EMA11 USER M
26. USER MANUAL 10 1 VISUALIZATION TREE 4 L1 Phase gt L2Phase lt 13 Phase L1 Phase V C lt L2 Phase V C lt gt L3 Phase V C Phase Voltage lt gt Line Voltage 4 Line Current Avg Current lt gt Avg Current 5 Thd Voltage lt Thd Current 3 Phase Reactive Apparent 6 Baers 14 Active Powers lt gt Powers powers 7 Power Factor lt gt Cos lt gt Phasr i User Page 9 Counters Total Energies gt 14 Max Demand lt TB Energy TB Energy TB Energy TB Energy TB Energy TB Energy Today lt gt Today 2DaysAgo 4 2DaysAgo 4 Yesterday gt Yesterday P3 P4 P1 P2 P3 P4 P1 P2 P3 P4 j TB Energy TB Energy TB Energy TB Energy TB Energy TB Energy This Month lt gt This Month gt 2 Months Ago 2 Months Ago Previous Monte Previous Mont Eee P3 P4 P1 P2 P3 P4 P1 P2 P3 P4 ER N TB Energy TB Energy TB Energy TB Energy TB Energy TB Energy This Year leap This Year 2YearsAg 2 YearsAgo gt Previous Year gt Previous Year Co P1 P2 P3 P4 P1 P2 P3 P4 P1 P2 P3 P4 Total Energy Energy TB ere TB
27. ading etc Even so the NRG software supports the MODBUS protocol About all the information of protocols communication to see specific user manual EMA SERIAL COMMUNICATION PROTOCOL 15 Notes WARNING Megacon declines all liability for any damage to people or property caused by improper or incorrect use of its products Megacon reserves the right to change product specifications without prior notice 55 EMA11 USER MANUAL megocon
28. de for Information Interchange format RS485 allows a multi drop connection in order to link up several instruments on the same network on the other hand RS232 allows a single point connection This last connection must be carried out when both systems are turned off and disconnected from the power line in order to avoid damages on the serial output RS232 may be 9 or 25 pin connection please follow up the enclosed table Signal Description DB9 DB25 EMA11 DCD Data Carrier Detect 1 8 TX Transmit Data 3 2 1 DTR_ DataTerminalReady 4 20 3 3 Data Set Ready 6 6 _ Request To Send 1 4 Clear To Send 8 5 J M Ring Indicator 9 22 The maximum suggested length of a RS 485 connection is about 1200 mt while for a RS232 connection about 5 mt For longer distances cables with low attenuation or connection to line amplifier are recommended Up to maximum 32 units can be wired on the same serial line RS485 exceeding this number it is imperative to insert a signal repeater each repeater can manage up to 32 instruments The polling time is directly proportional to the instruments number connected on the same serial line 8 4 1 RS485 CONNECTION NOT SHIELDED RS232 RS485 converter Max 32 EMA max 1200 mt EMA 11 EMA 11 Once a RS485 network has been configured to communicate between the Host computer and the instrument s EMA a serial inte
29. e of residual voltage inside the instrument Extract the battery circuit without touching any other component 5 Change the battery Put the positive pole in the upper direction 6 Plug in the circuit with the new battery in the upper directions inside the instrument The 4 pin strip must meet with their relative support 7 Mount the rear door again and close it Restore all the connection and turn on the instrument 8 In the Warnings page is possible to check the condition of battery BATTERY OK 15 EMA11 USER MANUAL 6 CONNECTION N 1 ON Q Connection Table Connector Name Connector Name 1 Digital Input 2 Digital Output 6 1 POWER SUPPLY The instrument doesn t work without power supply Before powering the instrument verify always to insert the right value 85 265 Vac dc standard 20 60 Vac dc OPTION The instrument is equipped with an internal protection fuse on the power supply type 5x20mm dimensions 315mA 250V Fast i e Schurter FSF If the instrument is off with presence of power supply it s necessary to verify the internal fuse In case of fuse replacement disconnect the instrument from the power supply current plus voltage input and all input output sections digital input output analog output RS485 RS232 serial port etc then open the rear door and change the fuse that is near the power supply con
30. e shows the ON OFF status of the digital inputs and digital outputs The symbol indicates that none output input is present on the hardware these are inputs outputs optional 39 EMA11 USER MANUAL Warnings To see warnings are available 2 pages The first page shows the situation of the connection of the instrument regarding the connection of current transformer in the current input and the phase sequence for the voltage input If at least one of current transformer is inverted the display shows Warning otherwise TA If the sequence of phases at voltage inputs is inverted will appear WARNING otherwise Phases sequence The message No Info Please Wait appears during the elaboration to establish the phase s sequence The information on phase appears only if the three phase system voltage is higher of 10V otherwise the display shows Low voltage No Info If the voice of menu Setup General Warnings is Yes the warnings page of inversion of current transformer and phases sequence will be display automatically alternatively at the default page each time that happens an inversion The second page shows the situation of internal battery If the voltage level of internal battery is lower of 2 3V on display will appear Battery LOW otherwise Battery This page will be displayed independently of the voice of menu Setup General Warnings when the voltage level is
31. e unbalance voltage appears only if it s defined in setup Variable reading of line voltage e V kV rms voltage L1 V e V kV rms voltage L2 V e V kV rms voltage L3 V e V kV average line voltage Vavgl e percentage of unbalance line voltage Vunb Note the unbalance voltage appears only if it s defined in setup Variable reading of line current e A kA rms current L1 l4 A rms current L2 l2 e A kA rms current L3 13 e A kA rms neutral current showed only with connection 4 wires In 33 EMA11 USER MANUAL Variable reading average line three phase system and neutral current e A kA rms average three phase system current lay e A kA rms average current L1 lia e A kA rms average current L2 lza e A kA rms average current L3 13 e A kA rms average current Inav Note The average current is calculated in the average time set in the setup The average neutral current will be showed only if the insertion type is 4 wires Variable reading maximum average line three phase system and neutral current e A KA rms maximum average three phase system current gt Imaxav e A kA rms maximum average current L1 limaxav e A kA rms maximum average current L2 e A kA rms maximum average current L3 I3maxav e A kA rms maximum average current lnmaxav Note The maximum average current is calculated in the average t
32. e updated at the same acquisition time set for the storing in memory Minimum and maximum values are not absolute any more e Average Power Storing of average active and reactive power It s possible to enable or disable the storing The sampling time is set at 15 minutes but it s modifiable Time Avg e Harmonics Up to the 31 harmonics are stored for each line both of voltage and current channels Enable the operator may enable or disable the storing of harmonic values The sampling time is fixed at 15 minutes and it s not modifiable If any of the above mentioned parameters has been enabled for storage by exiting the setup menu a brief message will appear asking the operator to erase all the previous stored data in the memory in order to enable a new recording campaign at empty memory with no residual information s The data downloaded on PC using NRG software or communication protocol does not come deleted and for this reason it s possible to recover them using the function of communication protocol 47 EMA11 USER MANUAL 11 8 DIGITAL OUTPUT The digital outputs can be programmed to function like alarm overload load management for consumption optimization etc or pulses emission for energy calculation or remote activation using software NRG Out Index expresses the number of output from 1 to 6 DO1 and DO2 standard to select or program which are present on the hardware of the instrument Type allows to
33. em power factor D PF frequency L1 F4 Variable reading of phase L1 e V kV RMS voltage L1 phase V e A kA RMS current L1 l e W kW MW GW active power L1 W e PF power factor L1 PF Variable reading of phase L2 e V kV RMS voltage L2 phase V e A kA RMS current L2 l2 e W kW MW GW active power L2 W e PF power factor L2 PF Variable reading of phase L3 e V kV RMS voltage L3 phase V e A kA RMS current L3 ls e W kW MW GW active power L3 W e PF power factor L3 PF Voltage and current wave forms L1 line In the L1 Phase V C page are showed the voltage and current wave forms with their peak values and crest factors The wave form of the current has the lower amplitude 32 EMA11 USER MANUAL Voltage and current wave forms L2 line In the L2 Phase V C page are showed the voltage and current wave forms with their peak values and crest factors The wave form of the current has the lower amplitude Voltage and current wave forms L3 line In the L3 Phase V C page are showed the voltage and current wave forms with their peak values and crest factors The wave form of the current has the lower amplitude Variable reading of phase voltage e V kV rms voltage between L1 and 12 V 7 e V kV rms voltage between L2 and L3 V2 3 e V kV rms voltage between L3 and L1 V3 1 e percentage of unbalance phase voltage Vuro Note th
34. er in the setting menu or submenu in order to program and or set values and confirm the operation s DISPLAY CONTRAST It is possible to regulate the contrast of the display directly from the keyboard pressing simultaneously the UP key with the ENTER key the display will P U change in lighter change the display in darker it is necessary to press simultaneously the DOWN key with the ENTER key ENTER P DOWN SYSTEM RESET To reset the unit directly from the keyboard without entering in the Setup menu where from there it is also possible to reset the unit through Reset Global on chapter 11 11 operator may press simultaneously the 4 arrow keys after 2 seconds the SELECT SELECT CBS complete unit will be re set 10 REAL TIME VALUES The real time pages show all the possible performed measurement of the instrument during the evolution All visualized pages may be set as main page by the operator this means that the preferred page may be set as the one to be visualized To set the main page the operator shall press the ENTER key for at least 2 seconds the symbol of the main page is shown with a the top right side of the display The visualization of real time measure includes a sequence of principal pages that its possible to see pressing UP and DOWN keys and secondary pages that it s possible to see pressing LEFT and RIGHT keys when these symbols lt and gt compare 30 EMA11
35. er will be 150 15 135kW It s not available in Pulse mode InfValue and SupValue low limit and high limit of alarm in band way Note digital output management for P F cos In the P F and cos the absolute minimum is considered the 0 capacitive and the absolute maximum the 0 inductive To set an alarm when the cos is less than e g 0 9 inductive in the direction of inductive it s necessary to set MAX threshold mode Instead of this to set an alarm when cos is more than e g 0 9 inductive in the direction of O capacitive it s necessary to set MIN threshold mode In BAND mode there will be alarm when the value will be extern to the set band infvalue supvalue the infvalue must be the value nearest at the 0 capacitive Example IND 1 0 9 0 8 0 7 0 6 0 5 0 4 0 3 02 01 0 Min threshold 0 0 1 02 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 IND 1 0 9 0 8 0 7 0 6 0 5 0 4 0 3 02 01 0 Max threshold 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 IND 1 0 9 0 8 0 7 0 6 0 5 0 4 0 3 02 01 0 O 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 CAP 48 EMA11 USER MANUAL 11 9 DIGITAL INPUT In the DIGITAL INPUT menu it s possible to program the digital input function for both standards and options The 2 standards digital input can be programmed how follow e Type defines the type of operation NOT USED if none input is selected or enabled CLOCK SYNCRONIZATION Synchronization of
36. f the month corresponding at the holyday from 1 to 31 Example New year s day 1 January Day index 1 Month 01 January Day 01 Christmas 25 December Day index 2 Month 12 December Day 25 The consumption of this special feature if used will be saved always into the tariff P1 46 EMA11 USER MANUAL 11 7 STORAGE The STORAGE menu allows the programming of the data to store 4 section of storing exist relative minimums and maximums average powers harmonic components samples only with NRG software or serial command The storage is organized as FIFO first in first out type memory When the memory is full older data will be overwritten by new data e MIN amp MAX The acquisition time is expressed in minutes up to 12 MIN amp MAX values are stored Enable confirming the ENABLE voice the operator may enable ON or disable OFF the acquisition of MIN amp MAX values Measures parameters to store Select the variable to store in the minimums and maximums with the LEFT and RIGHT keys enable or disable this variable with UP and DOWN keys Rate min acquisition time This is the acquisition time of minimum and maximum values range 1 9999 minutes For example to store the minimum and the maximum value of programmed parameters each 15 minutes it s necessary to set 15 If the storing of minimum and maximum values is enabled the values shows in the relative page ar
37. ime set in the setup The maximum average neutral current will be showed only if the insertion type Is 4 wires Variable reading THD of voltage e Thd total harmonic distortion of voltage L1 phase Thdy e Thd total harmonic distortion of voltage L2 phase Thd e Thd total harmonic distortion of voltage L3 phase Thd Variable reading THD of current e Thd total harmonic distortion of current L1 phase Thd e Thd total harmonic distortion of current L2 phase Thd e Thd total harmonic distortion of current L3 phase Thd Variable reading three phase powers e W kW MW GW three phase system active power XP e VAr MVAr GVAr three phase system reactive power XQ e VA kVA MVA GVA three phase system apparent power XS e P F three phase system power factor XPF 34 EMA11 USER MANUAL Variable reading phase active power e W kW MW GW three phase system active power XP e W kW MW GW active power L1 P4 e W kW MW GW active power L2 P e W kW MW GW active power L3 P Variable reading phase reactive power e VAr MVAr GVAr three phase system reactive power XQ e VAr kVAr MVAr GVAr reactive power L1 Q e VAr kVAr MVAr GVAr reactive power L2 Q e VAr kVAr MVAr GVAr reactive power L3 Q Variable reading phase apparent power e VA KVA MVA GVA three phase system apparent power XS
38. lly disconnection of the current input EMA11 is equipped 6 4 WIRING DIAGRAMS VE muc ge L1lo L1 L2 lt TORT N L3 30 D AJ V p L1 Am i lt m 51 S2 Q L3 PP 3 wires insertion 2 current transformers Aron L10 L2 T T L3 o 11 a L2 e lt Sim S2 L3 pm e PI P2 3 wires insertion 2 current transformers and 2 voltage transformers Aron 17 EMA11 USER MANUAL E L1 L2 e L3 e L2 NO L3 3 v lZ Gmm L1 m 12 pum us Sim S2 i P1 P2 LOAD N 4 wires insertion 3 current transformers and 3 voltage transformes LI L2 L3 L2 t L36 3 e N Q 6 q P AJ v v SlmmmS2 e Pl P2 4 4 wires insertion 3 current transformers Ll o L2 o dL L3 e 4 NO SlmmS2 L1 Lg B Fe e 5 Single fase insertion 1 current transformer
39. lug in module Follow this procedure to operate in the maximum security Jc T Cut off the power supply of instrument and disconnect all inputs and all outputs Remove the seal from the rear door Open and remove rear door Its necessary to proceed with a lot of accuracy without touching other components because there are residual voltages Push slightly the two hooks situated on sides in the external direction using a screwdriver The module should be disconnected and inclined of 30 in the down direction Extract the plug in module Close the instrument with the rear door 20 EMA11 USER MANUAL 8 INPUT OUTPUT DEVICES 8 1 STANDARD DIGITAL INPUTS The EMA11 has 2 opt isolated inputs power supply from 12 to 24Vdc 1 12 24 Vd L T ont 5 li 12 24 Vdc DI2 H TE 1 N HH 14 s 14 For the digital input setup please consult the chap cO er 11 9 If long distances must be covered the wires connected to the EMA11 needs to be wired in a separate channel from the power supply cables if an intersection occurs between the power supply cable and the analog wires please remember to cross the intersection at 90 degrees in order to cut the generated magnetic fields 21 EMA11 USER
40. ment Not included in the warranty terms are technical interventions regarding equipment installation to electrical systems The manufacturer declines any responsibility for eventual injury or damage to persons animals or things as result of failure to follow the instructions in the user manual or caused by improper use of equipment The expenses of transport as well as the relative risks of same both to and from the place of repair will be the sole responsibility of the user This warranty expires after the date of purchase and any assistance required after said date including spare parts labour transport of personnel and material will be charged to the user following the tariffs in force for Technical Assistance Service at the time of such requested service In any case the replacement of the equipment as well as the extension of warranty after such breakdown is excluded EMA11 USER MANUAL INDEX 1 MAIN INFORMATION 5 1 13 INTRODUCTION 5 1 2 DESCRIPTION 5 1 3 CONFORMITY AND STANDARDS 5 2 TECHNICAL FEATURES 6 2 1 GENERAL SPECIFICATIONS 6 2 2 MEASURING METHOD AND ACCURACY 8 2 3 PROGRAMMABLE PARAMETERS SETUP SECTION 8 2 4 MEASURED VARIABLES 9 2 5 CALCULATED VARIABLES 9 2 6 MEASURING amp CALCULATION FORMULAS 10 3 INSTRUMENT DESCRIPTION 12 4 INSTALLATION 13 41 SAFETY 13 42 OPERATOR SAFETY 13 4 3 MOUNTING 14 5 INTERNAL BATTERY 15 5 1 REPLACEMENT INTERNAL BATTERY 15 6 CONNECTION 16 6 1 POWER SUP
41. n parameters coincides with the one used in the sw Verify the wiring type RS232 or RS485 and the settings of the serial port of the instrument The instrument communicates Use shielded wires with the PC but the Lack of terminations Connect terminations as par communication 1 interrupted 8 4 1 and 8 4 2 The instrument has lost the E prom lost data to try again to input another CODE or the PASSWORD time the data lost If the problem has not been solved or for other information s not covered in the present manual please contact with our Technical Assistance Department Before contacting it is suggested to collect the maximum information regarding the installation and mainly the following data Model and serial number from the label on the top of the instrument housing Purchase receipt Description of problem System configuration hardware fitted firmware release etc pee ec 54 EMA11 USER MANUAL 14 EMA SERIAL COMMUNICATION PROTOCOL The Electrical Multifunction Analyzer EMA series are disposal with two communication standard protocols ASCII e MODBUS RTU and optional PROFIBUS with external module Ethernet with external module The standard communication protocol has been optimised for the connection of the analysers with the NRG management software allowing to use all the available functions automatically search of the unit in the network automatic data downlo
42. nection from EMA serial port RS232 to PC RS232 serial port is Pin To Pin connection SIGNAL EMA11 DB9 PC 27 EMA11 USER MANUAL 8 4 4 MODEM CONNECTION MODEM APPLICATION n PHONE LINE O RS232 MODEM MODEM RS232 ES PE lt gt EE It s possible to manage the supervisioning of energy consumption through remote structures as modem LS application in order to cover big distances PRINTER Signal TX Transmit Data RX Receive Data Signal GrouND To make the remote connection it needs to program the remote modem connected to the EMA network To program this modem the user has to use any communication program like HyperTerminal The Hayes commands to program a standard modem are the following AT amp DO amp SO amp COS amp R1 ATSO 2 ATX3 AT amp WOYO The meaning of the commands is the following AT is the command prefix e amp DO ignore DTR e amp 50 ignore DSR e amp CO ignore CD e amp R1 ignore RTS e 50 2 set at two as the ring number after the which the modem automatically reply the number can be different by 2 but it must be different by O e amp WO store the configuration in the register of the modem ss not volatile memory e YO set the configuration stored in the register O of the modem s not volatile memory as the default configuration at the starting or the reset of modem See the modem s user manual
43. nector in the low part of instrument Only a qualified and authorized technical person can change the fuse Extract the interrupted fuse using a screwdriver and with a plier insert the new fuse The instrument s power supply does not require any earth connection 16 EMA11 USER MANUAL 6 2 VOLTAGE INPUTS 11 can measure voltages up to a maximum 600 Vrms between phase phase further that value it is imperative to use voltage transformer When using voltage transformer make sure to respect the input and output polarities Use cables with maximum cross section of 2 5mm attach them to the voltage measurement screw terminals Connect the instrument following up the wiring diagrams described on chapter Errore L origine riferimento non stata trovata EMA11 was developed and tested in accordance with IEC 348 class 1 standards for operating voltages up to 600 Vac rms 6 3 CURRENT INPUTS Connect the instrument following up the wiring diagrams described on chapter Errore L origine riferimento non stata trovata WARNING before connecting the current inputs to the terminals of the instrument are advised that the maximum allowable current input must be and not exceed 5A with screw able current input in order to avoid negligence operator must first shutdown the system and short circuit the secondary wiring of the current transformer if used and unscrews the current input terminals WARNING to prevent accidenta
44. ng It s better to set a value less than 5 seconds Warnings enables Yes or disables No the visualization every 15 second of the warnings page alternatively at default page if current transformer connection is wrong or there is an inversion of the phase sequence The condition of battery low it will appear independently of the set of this voice B Light is the time from 0 to 360 seconds in which the display remains on after the keyboard s inactivity To hold the display always on it has to be set the value as O The brightness of display declines about 10 every 1000 hour of work Def Page Time is the time of wait before to come back to default page Range 10 900 seconds Synchronization to set the fundamental frequency Mode internal or external Freq programmable frequency value range 5 500HZ Set Clock sets the internal clock of the instrument with relative date The format of the date is dd mm yy and of the time is hh mm ss Day Light allow to set the yearly summer time change It s possible to enable the time shift of the summer time and the return at the solar time at the fixed data The instrument manages the summer time from the 1997 to the 2030 Password it s possible to set a numeric password to modify the SETUP The default password is 0000 the setup can be always opened and it s always possible to change any parameter If the password is different by 0000 from 0001 to 9999 at the entrance of setup the pas
45. r the calculation of the average parameters e dt Mobile defines the updating time in window mobile of the average parameters 44 EMA11 USER MANUAL 11 6 ENERGY In the ENERGY menu it s possible to modify the unit of measurement of energies to set at the initial value the generic and energy counters to manage on the time bands e Type allows to choose the unit of measurement for the energy counter KWh Normal or MWh Heavy e PRESET allows to set at initial value the energy counters and generic counters ENERGIES it s possible to set energy total counters at initial value These values are expressed in kWh and kVArh the visualization on total energies page will be congruent with the type of energy Normal or Heavy The time bands counters don t consider the preset values Only total energy counters consider these values This function is useful for example to compare the consumption with an energy counter already in use COUNTERS it s possible to set the 8 generic counters at initial value e TIMEBANDS it possible subdivide the energy consumption in 12 time bands In this way its possible to value the energy costs where the energy suppliers apply the time band tariff or its necessary to divide the consumption in different period To program the time bands function to accede at the TIMEBANDS menu with the following sub menu Update day sets the day in which change the month in the time bands range 0 31
46. rent and voltage for each line DIGITAL OUTPUT sets the OUT INDEX number of digital output TYPE type of alarm always on max threshold min threshold external band energy pulse always off MEASURE CODE the parameter to associate with the digital output VALUE the value to set as threshold or pulse TIME delay time by enabling the digital output or duration of impulse HYSTERESIS INFVALUE and SUPVALUE lower value and higher value for alarm of external band DIGITAL INPUT sets the type of acquisition Not used Clock Synchronization Periods Counters INPUT NAME WEIGHT or External Synchronization ANALOG OUTPUT set the analog output number OUT INDEX TYPE disable 0 20mA and 4 20mA MEASURE CODE the parameter to associate at analog output MIN and MAX lower value and higher value of the variable to associate at current output RESET allows to make a RESET MEASURES RESET SETUP RESET STORAGE RESET COUNTER RESET MAX DEMAND and RESET GLOBAL EXIT SETUP allows the operator to exit from the main menu or setup page in order to reach the instantaneous value page Before exiting the page the instrument will question the operator if he might to save the STORAGE Setup in case one or more parameters have been modified All the above mentioned voices will be described on the following chapters 42 EMA11 USER MANUAL 11 3 GENERAL The general menu is subdivided in the following sub menu KCT current transformer
47. rew the nut until the instrument is fixed on the panel There are n 4 support guides and n 4 nuts to mount the instrument 14 EMA11 USER MANUAL 5 INTERNAL BATTERY To avoid to lose the setup and all storing data the instrument is equipped of an internal battery CR2450 5 1 REPLACEMENT INTERNAL BATTERY Only a qualified and authorized technical person can change the internal battery This operation will delete all storing data and it will restore the default setup with the exception of the password and the code to enable the harmonics and time bands Using the software or relative serial commands it s possible to download all storing data to avoid to losing same The next figure shows where is located the battery inside the instrument Extractible Pin strip FP Conctat Battery Battery SHHHHHHS Instruction to change the internal battery 1 It s necessary to cut off the power supply of instrument and to disconnect all inputs and all outputs 2 Remove the seal from the rear door 3 Open and remove the rear door 4 It s necessary to pay attention to presenc
48. rface converter must be wired between PC and instrument s as mentioned on the above picture In serial line over 500 mt connect a line termination resistor Rt 100Q 1200 between the two twisted pair cables leading from the converter at the end of the network last connected instrument It s recommended to use always twisted pair cable with minimum cross section of 0 36mm 22AWG and capacity less than 60 pF m i e BELDEN cable type EIA RS485 Ref 3105A 26 EMA11 USER MANUAL 8 4 2 5485 CONNECTION SHIELDED Rt TX RX COM EMA 11 EMA 11 Although the signal is given by the difference between A and B voltage a ground connection is needed to eliminate or to reduce the common mode noise induced into the bus To reduce the EMI interferences need to connect the shield directly to a ground at one end and with a series RC network at the other end 1000 C 33uF The max length of the stubs is 20cm 8 4 3 RS232 CONNECTION EMA 11 If a RS232 communication line is shorter of 5 mt and a multidrop network will not use it s not necessary to use a serial line converter because the serial output is compatible with the PC as shown on the above mentioned picture A RS232 could reach 15mt but the presence of noises in the industrial application could cause breakdown in the communication The con
49. rogrammed value Measure Code Once the maximum full scale has been programmed the instrument automatically will associate the maximum current value 20 mA at this value If the minimum end scale value is lower of maximum end scale value the out of current will be directly proportional at variable set otherwise it will be inversely proportional Minimum and maximum can be negative value 51 EMA11 USER MANUAL 11 11 RESET Reset page allows to cancel some operation or the complete operation of the setup system reset modes are classified in four groups RESET MEASURES reset all values or selected group of measure In particular e All reset all of measures minimum and maximum energy counter time bands e Energies reset total energy counters e TimeBands reset time bands e Min Max reset minimums and maximums Reset Setup delete all definition in the setup and the instrument come back to default setup Reset Storage delete all data stored in the memory Reset Counter delete all counters joined at digital inputs Reset Max Demand delete max demand values Reset Global reset complete of the instrument Setup measures stored 11 12 EXIT SETUP The last voice of the setup menu is EXIT SETUP which allows the operator to leave the instrument setup and go back to the REAL TIME VISUALIZATION PAGES Operator may also exit the setup by pressing simultaneously the RIGHT amp LEFT
50. rument Clock Calendar e time format hours minutes second hh mm ss e date format day month year dd mm yyyy e dayofthe week Condition internal RAM memory 4 pages selectable with LEFT and RIGHT keys of information on condition internal RAM memory The internal memory is divided in 4 sections e Storage values average powers Avg Powers e storage values relative minimum and maximum Min Max e Storage values harmonic components Harmonics e storage values samples Samples Each section is displayed in own sub page The page shows the following information e Type of section of memory for examples samples e Status ON if memory enabled or OFF if memory disabled e Record s number of stored events in memory Memory Kb e Available static memory expressed in Kb which is available to store data for this section e Used dynamic memory expressed in Kb which is used by data already stored record stored e Free dynamic memory expressed in Kb which is free to store data Used amp Free memory are working together blocks of memory are transferred from Free memory to Used memory in order to store the values on the RAM of the instrument Initially the available memory will be totally free but at own exhaustion it will be totally used These information are very important to avoid to delete stored data to choose how to storage the data on the basis of available memory Digital I O The pag
51. scribed on the following section iJ gt v v 2 1 DISPLAY Back lighted graphic LCD 70x 0mm 128x128 dot dot pitch 0 35mm x 0 35 dot size 0 32mmx0 32mm high viewing direction 60 positive and negative visualization at low reflection 2 KEYBOARD In the Acquisition Mode the up and down arrows allows to skip through the measuring page of the instrument while in the Setup Mode all the buttons including Enter key allows to program the instrument 12 EMA11 USER MANUAL 4 INSTALLATION 4 1 SAFETY On receipt of the instrument and prior to installation make sure it is intact and has not been damaged during shipment Before installing make sure the operating voltage and mains voltage are compatible The instrument power supply must not be earthed The instrument is equipped with a fuse on the power supply type 5x20mm 315mA 250V Fast i e Schurter FSF Always disconnect the instrument from all power sources before opening it for maintenance and or repairs The instrument s capacitor may still be charged even after it has been disconnected from all power sources Maintenance and or repairs must only be carried out by qualified and authorized personnel If in any doubt about the instrument s safety take it out of service and implement the necessary procedures to prevent its inadvertent use e Instrument operation is no longer safe A when the instrument shows clear signs of damage B when
52. subdivided in the 4 time bands P1 P2 P3 P4 to set the time bands are available 12 different times Inside the Time it s possible to set the hour StartHour and the minutes StartMin in which the time band starts Select Type insert the band P1 P2 P3 or PA to link at the consumptions The set band will finish when another band will start or at the end of the day For example if the energy consumption from 8 00 to 12 00 are in the band P2 and from 12 00 to 18 00 in the band P3 it s necessary to set 8 00 like start time StartHour and StartMin in TIME 1 with band P2 Type 12 00 like start time StartHour and StartMin in TIME 2 with band P3 Type and 18 00 like start time StartHour and StartMin in TIME 3 with band P1 Type in this way the P1 band will maintain until 8 00 of the day after without other programming P1 band is the most economic and the P4 band is the most expensive e HOLIDAYS Its possible to program the days in the year in which the time bands programmed are not used and the energy consumption end up in the economic band P1 This function can be useful in holiday or in days in which the energy suppliers apply different tariff of others days Its possible to program e Day Index allows to set 52 different days like holidays After the index define the day of the year e Month is the month of the day in programming One number from 1 to 12 defines the month 1 January 2 February etc e Day is the day o
53. sword will be request if the password is ignored it will be possible to see every parameter but it will be impossible to modify it Only with the correct password it s possible to change every parameter Us sel the new password as 0000 the instrument come back at default status Call the E constructor to have an emergency password if you lose the password Access allows to input a code of 6 digits to enable the calculation end the visualization of the harmonics and or the time bands These options are both enabled if it s an H instrument the code is on a report These options are disabled if it s an L instrument but one or both can be enabled To make this its necessary to give the serial number and the option s to enable at Megacon that will send the access code corresponding at the instrument and the selected option s User Page allows to input 5 choosen from a parameters list to visualize in the relative page V Unbalance allows to calculate the voltage unbalance between the line voltage or phase voltage 43 EMA11 USER MANUAL 11 4 SERIAL COMM The SERIAL COMM menu allows the programming of the communication parameters of the COM1 and the option COM2 e Protocol can be chosen between ASCII and MODBUS e Address is the address node or logic number from 01 to 255 in MODBUS or from 01 to 128 in ASCII This number identifies the node in a network and consequently the instrument or the peripheral of a serial multidrop net
54. the instrument does not work C after long storage in extreme conditions D after serious damage during shipment 4 2 OPERATOR SAFETY Carefully read the following pages before installing and using the purchased instrument Maintenance and or repairs must only be carried out by qualified and authorized personnel To ensure proper and safe use of the instrument and its correct maintenance and or repairs authorized personnel must follow normal safety procedures at all times SYMBOLS READ CAREFULLY THE CONTAINED INSTRUCTIONS 13 EMA11 USER MANUAL 4 3 MOUNTING The unit needs to be installed on front panel of mains control switchboards wiring and connections must be carried out following the EMC Electro Magnetic Compatibility procedures Plug in screw terminal blocks are used for appropriate wiring There is a security locking on the current inputs terminal block Suggested is to install the equipment on vibration free switchboards and with an environmental temperature ranging between 10 and 50 The panel cut out of the unit is the following 144 138 144 MERE LAF amp Following the picture below mentioned insert the instrument from the front side of the switchboard from behind insert black support guide on the screw of the instrument once the black support guide fits on the screw and is pushed against the instrument and the internal panel sc
55. the internal clock When the impulse arrives on digital input the internal clocks seconds counter is cleared if it s between 00 and 29 while if its between 30 and 99 it s cleared and the minutes counter go on the next minute Example 17 31 23 hh mm ss will be 17 31 00 08 45 55 hh mm ss will be 08 46 00 PERIOD to change the bands for the energy counter with time bands The following table shows the time band selected depending of the status of digital inputs DIGITAL INPUT 2 DIGITAL INPUT 1 BAND SELECTED OPEN OPEN P1 OPEN CLOSED CLOSED OPEN CLOSED CLOSED CLOSED there is a voltage from 12Vcc and 24Vcc OPEN the voltage is OVcc The change of band happens when the instrument recognizes a change of status on one of digital input at least At the moment of the digital inputs enabling like Periods and at the EMA s turn on with the enabling already set the energy counters increment continue on the last band enabled independently of the digital inputs status until the change of the minute of the internal clock or the change of the status of one of digital input COUNTERS the generic counters are enabled When an input receives a pulse the counter joined at this input is increased by the value that depends of the weight set Ext DI the function depends of the Sync Avg set in the menu AVERAGE par 11 5 If Sync Avg is Int Rtc a signal 12 24Vcc on the digital input 1 change the band from P1 to P2 and vice versa
56. to use up and down keys to change it Pressing the up key the sequence of the type is the following ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwx 2 SPACE 0123456 7 89 then the sequence begin from A again Naturally pressing the down key the sliding happen on the contrary kWh kWh kVArh KVArh Water Gas Set Weights allows to set for each counter the weight of the pulse The value set is the number of pulse for unit of increase of the counter ex to see to increase the counter of one unit each 5 pulse it s necessary to set the value 5 50 EMA11 USER MANUAL 11 10 ANALOG OUTPUT OPTION Selecting the analog output voice the following programming page appears e Out Index expresses the number of output to select or program which are present on the hardware of the instrument e Type allows to select the value of current output disabled 0 20mA 4 20mA Through the up amp down keys it may be possible to select the type of the output current by pressing the ENTER key the configuration is saved e Measure Code is the measure see cap 12 to associate at the analog output e Min full scale value of the lower limit of the programmed value Measure Code Once the minimum full scale has been programmed the instrument automatically will associate the minimum current value 0 or 4 mA at this value e Max full scale value of the upper limit of the p
57. ts 12 230 Vac dc 150mA max up to 6 using options 2 0 20 or 4 20 mA analog outputs galvanic insulation option Memory data retention RAM 128 KB useful 80KB 1 Mbytes all useful option No volatile memory data using internal battery Data retention 5 years typical at 25 C 77 F Stored variables Average power Min max values Harmonics option Samples Display interface 128x128 dot graphic LCD at high contrast adjustable and with LED backlit Dimension 70x70mm Keyboard interface 5 functional keys for paging and programming EMA11 USER MANUAL Operating temperature From 10 C 14 F to 50 C 122 F Storage temperature From 15 C 5 F to 70 C 158 F Operating humidity 90 not condensing Protection standards IP 52 front EN60529 IP65 with gasket on request IP 20 screw and terminals Weight and dimension 0 430 kg app equipped with 2 digital outputs 2 digital inputs RS485 and RS232 Memory 128Kbytes 144x144x66 mm EMA11 USER MANUAL 2 2 MEASURING METHOD AND ACCURACY Measuring range 30 500Hz Measuring method 64 sampling per period for V1 and 11 V2 and 12 V3 and 13 Measuring interval 0 1 second Instrument accuracy Model 11 Model 11 05 Current lt 0 5 lt 0 25 61036 EN60687 Sampling frequency 45 Hz 2 280 or at 60 Hz 3 88kHz Zero self regulation Offset 0 1 second RTC R
58. wer Three phase positive active energy Three phase inductive reactive energy Three phase negative active energy Three phase capacitive reactive energy THD voltage L1 phase THD voltage L2 phase THD voltage L3 phase Average three phase active power Average three phase current Average three phase reactive power Temperature Average current L1 phase Average current L2 phase Average current L3 phase Neutral current Voltage unbalance Current unbalance L1 phase factor L2 phase K factor L 3 phase K factor 253 EMA11 USER MANUAL 13 PROBLEMS AND SOLUTIONS If you have a problem setting up or using your instrument you may be able to solve it yourself Before calling your retailer or nearest distributor you should try the suggested actions that are appropriate to your problem Problem Possible cause Suggested The instrument doesn t turn The power supply is Verify the connection and the disconnected or wrong presence of power supply he internal fuse is interrupted See the chap cap 6 1 to verify and or to change the internal fuse The display is completely dark Contrast badly adjusted Adjust contrast as described or clear on 9 1 The instrument doesn t Communication wires Verify the correct wiring communicate with the NRG Communication protocol Verify that the communication software or other Wiring system and protocol of the instrument communication software communicatio
59. work This parameter is set freely This parameter is set automatically using NRG software with ASCII protocol while with MODBUS protocol it must be set e COM1 COM2 are configured by the following submenus Baud transmission speed programmable from 1200 to 19200 bps Parity parity sequence programmable NONE EVEN and ODD DataBit number of data bits programmable 7 or 8 bit Type type of serial output to manage COM 1 may manage RS485 or RS232 2 may manage RS485 or RS232 11 5 AVERAGE The AVERAGE menu allows the settings of parameters in the calculation of average values e Sync Avg defines the type of the synchronism for the start and the stop of the average calculation Three mode of use are available Int Rtc use the internal clock as time based line The average calculation start when the clock changes the minute Ext DI use the digital input 2 012 to synchronize the start and the stop of the average calculation The digital input will be set as ExtDI automatically nt Ext mixed mode The digital input will be set as ExtDI automatically No congruent operation of digital input type and Sync Avg will involve the visualization of the warning message on the display see for example in this figure e Type defines the type of the window used to the average calculation fixed the updating depends of the Average time or mobile the updating depends of dt Mobile e Time Avg integration time fo

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