Contrel EMA11 User manual

EMA11
ELECTRICAL MULTIFUNCTION ANALYZER
User Manual
IM 135-U v. 4.1
EMA11 IM135-U v4.1.doc
E LECTRICAL M ULTIFUNCTION A NALIZER R ECORDER
S ELECT P. UP E NTER P. D OWN S ELECT
E LECTRICAL M ULTIFUNCTION A NALIZER R ECORDER

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Information in this document is subject to change without notice and does not represent a commitment on the part of
Contrel Elettronica Srl.
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 Contrel Elettronica Srl, 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 Contrel Elettronica Srl.
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 Contrel Elettronica Srl.
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 equipment.
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.

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INDEX
1) MAIN INFORMATION________________________________________________________5
1.1) INTRODUCTION _________________________________________________________5
1.2) DESCRIPTION ___________________________________________________________5
1.3) CE 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 & CALCULATION FORMULAS _________________________________10
3) INSTRUMENT DESCRIPTION ________________________________________________12
4) INSTALLATION ___________________________________________________________13
4.1) SAFETY _______________________________________________________________13
4.2) OPERATOR SAFETY ____________________________________________________13
4.3) MOUNTING ____________________________________________________________14
5) INTERNAL BATTERY ______________________________________________________15
5.1) REPLACEMENT INTERNAL BATTERY ______________________________________15
6) CONNECTION ____________________________________________________________16
6.1) POWER SUPPLY________________________________________________________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 (“PLUG IN”) ______23

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8.3.3) 4 STATIC DIGITAL OUTPUTS OPTION 4DO (“PLUG IN”)_____________________24
8.3.4) 4 RELAY DIGITAL OUTPUTS OPTION 4DO (“PLUG IN”) _____________________24
8.3.5) 2 ANALOG OUTPUTS OPTION 2AO (“PLUG IN”) ___________________________24
8.3.6) 4 ANALOG OUTPUTS OPTION 4AO (“PLUG IN”) ___________________________25
8.4) SERIAL OUTPUTS ______________________________________________________26
8.4.1) RS485 CONNECTION NOT SHIELDED ____________________________________26
8.4.2) RS485 CONNECTION SHIELDED ________________________________________27
8.4.3) RS232 CONNECTION __________________________________________________27
8.4.4) MODEM CONNECTION ________________________________________________28
8.4.5) OPTION RS485/RS232 COM2 (“PLUG-IN”) ________________________________29
9) USE_____________________________________________________________________30
9.1) FUNCTION KEYS _______________________________________________________30
10) REAL TIME VALUES _______________________________________________________30
10.1) VISUALIZATION TREE ___________________________________________________31
10.2) MEASURES VISUALIZATION______________________________________________32
10.3) STATUS AND INFORMATION PAGES ______________________________________40
11) SETUP __________________________________________________________________42
11.1) SETUP ITEMS __________________________________________________________42
11.2) MAIN MENU SETUP _____________________________________________________43
11.3) GENERAL _____________________________________________________________44
11.4) SERIAL COMM _________________________________________________________45
11.5) AVERAGE _____________________________________________________________45
11.6) ENERGY ______________________________________________________________46
11.7) STORAGE _____________________________________________________________48
11.8) DIGITAL OUTPUT _______________________________________________________50
11.9) DIGITAL INPUT _________________________________________________________51
11.10) ANALOG OUTPUT (OPTION) ______________________________________________53
11.11) RESET ________________________________________________________________54
11.12) EXIT SETUP____________________________________________________________54
12) LIST OF MEASURES _______________________________________________________54
13) PROBLEMS AND SOLUTIONS_______________________________________________56
14) EMA SERIAL COMMUNICATION PROTOCOL __________________________________57
15) Notes ___________________________________________________________________57

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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 EMA11 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, via 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 31st 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 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 61010-2

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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
3700 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: >2 MΩ.
Burden 0.2 VA.
Current input
Model EMA11 Model EMA11-1A
3 isolated inputs (internal CT) range 10mA-5A rms 4mA-1A rms
Over current max 10A (100A for 1 second) 2A (10A for 1 second)
Burden 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 outputs, 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 50KB); 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.

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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.
144 66
126
134
144

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2.2) MEASURING METHOD AND ACCURACY
Measuring range
30-500Hz.
Measuring method
64 sampling per period for V1 and I1, V2 and I2, V3 and I3.
Measuring interval 0,1 second.
Instrument accuracy
Model EMA11 Model EMA11-05
Voltage < 0.5 % < 0.25 %
Current < 0.5 % < 0.25 %
Power < 1 % < 0.5 %
Energy < 1 % < 0.5 %
Power Factor < 1 % < 0.5 %
Standard EN 61036 EN60687
Sampling frequency
45 Hz=2.280 or at 60 Hz = 3,88kHz
Zero self-regulation
Offset
0,1 second.
RTC - REAL 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.

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2.4) MEASURED VARIABLES
PHASE VOLTAGE (Rms) VL1-N - VL2-N - VL3-N
LINE CURRENT (Rms) IL1 - IL2 - IL3
FREQUENCY FL1 (Hz)
TEMPERATURE T(°C)
2.5) CALCULATED VARIABLES
LINE VOLTAGE (Rms) VL1-L2 - VL2-L3 - VL3-L1
THREE-PHASE SYSTEM VOLTAGE (Rms) V
THREE-PHASE SYSTEM CURRENT (Rms) I
AVERAGE THREE-PHASE SYSTEM CURRENT Iavg
MAXIMUM AVERAGE THREE-PHASE SYSTEM CURRENT Imaxavg
AVERAGE LINE CURRENT IL1avg-IL2avg-IL3avg
MAXIMUM AVERAGE LINE CURRENT IL1maxavg - IL2maxavg - IL3maxavg
NEUTRAL CURRENT IN
AVERAGE NEUTRAL CURRENT INavg
MAXIMUM AVERAGE NEUTRAL CURRENT INmaxavg
POWER FACTOR PFL1 - PFL2 - PFL3
THREE-PHASE SYSTEM POWER FACTOR PF
COSϕ COSϕL1, COSϕL2, COSϕL3
THREE-PHASE SYSTEM COSϕ COSϕ
APPARENT POWER S L1 - S L2 - S L3 (VA)
THREE-PHASE SYSTEM APPARENT POWER S (VA)
ACTIVE POWER P L1 - P L2 - P L3 (W)
THREE-PHASE SYSTEM ACTIVE POWER P (W)
REACTIVE POWER Q L1 - Q L2 - Q L3 (VAr)
THREE-PHASE SYSTEM REACTIVE POWER Q (VAr)
AVERAGE ACTIVE POWER PAVG (W)
AVERAGE REACTIVE POWER QAVG (VAr)
THREE-PHASE SYSTEM ACTIVE ENERGY Wh+
THREE-PHASE SYSTEM TRANSFERRED ACTIVE ENERGY Wh-
THREE-PHASE SYSTEM INDUCTIVE REACTIVE ENERGY VArh+
THREE-PHASE SYSTEM CAPACITIVE REACTIVE ENERGY VArh-
Total counters and time bands are available.
TOTAL HARMONIC DISTORTION - THD (%) CURRENT AND VOLTAGE
HARMONIC ANALYZES (Option)
Analyzes up to the 31st harmonic of both voltage and current for each phase.
VL1-N, VL2-N, VL3-N; IL1, IL2, IL3 (%)

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2.6) MEASURING & CALCULATION FORMULAS
()
dt
WLi
WhLi
ALi
WLi
PF Li
QLi
WLi
WLi
Li
ILiN
VLiN
ALi
P
iLi∆k
vLiN k
QLi
P
iLik
vLiN k
WLi
P
iLiN k
ILi
P
vLiN k
VLiN
P
k
P
k
P
k
P
k
∫
∞
=
=
+
=
⋅=
∑−
⋅
=
∑⋅
=
=
=
=
=
=
=
∑
∑
0
EnergyActive
FactorPower
2
2
cosCos
PowerAppearent
PowerReactive
PowerActive
2
RMSCurrentLine
2
RMSVoltagePhase
1
1
1
1
ϕϕ