Contrel EMA-D9 User manual

EMA-D9
ELECTRICAL MULTIFUNCTION ANALYZER
User Manual
IM 115-U v. 3.4
EMAD9 IM115-U v3.4.doc

EMA-D9 - USER MANUAL
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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.
Warranty covers equipment returned ex works.
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 ____________________________________________________________13
5) INTERNAL BATTERY________________________________________________________14
5.1) REPLACEMENT OF THE INTERNAL BATTERY_______________________________14
6) CONNECTION______________________________________________________________15
6.1) POWER SUPPLY________________________________________________________16
6.2) VOLTAGE INPUTS ______________________________________________________16
6.3) CURRENT INPUTS ______________________________________________________16
6.4) WIRING DIAGRAMS _____________________________________________________17
7) INPUT/ OUTPUT DEVICES ___________________________________________________20
7.1) STANDARD DIGITAL INPUTS _____________________________________________20
7.2) DIGITAL INPUTS (option)_________________________________________________21
7.3) STANDARD DIGITAL OUTPUTS ___________________________________________22
7.4) SERIAL OUTPUTS ______________________________________________________23
7.4.1) RS485 CONNECTION NOT SHIELDED __________________________________23
7.4.2) RS 485 CONNECTION SHIELDED ______________________________________24
7.4.3) RS232 CONNECTION ________________________________________________24
7.4.4) MODEM CONNECTION _______________________________________________25

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7.4.5) SECOND RS485 BOARD (option) ______________________________________25
8) USE ______________________________________________________________________26
8.1) FUNCTION KEYS _______________________________________________________26
9) REAL TIME VALUES ________________________________________________________26
9.1) VISUALIZATION TREE ___________________________________________________27
9.2) VISUALIZATION MEASURES______________________________________________29
9.3) STATUS AND INFORMATION PAGES ______________________________________36
10) SETUP____________________________________________________________________38
10.1) MAIN MENU SETUP _____________________________________________________39
10.2) GENERAL _____________________________________________________________40
10.3) SERIAL COMM _________________________________________________________41
10.4) AVERAGE _____________________________________________________________42
10.5) ENERGY ______________________________________________________________42
10.6) STORAGE _____________________________________________________________45
10.7) DIGITAL OUTPUT _______________________________________________________47
10.8) DIGITAL INPUT _________________________________________________________48
10.9) ANALOG OUTPUT (option available only with external module) ________________50
10.10) RESET ______________________________________________________________51
10.11) EXIT SETUP __________________________________________________________51
11) PROBLEMS AND SOLUTIONS ________________________________________________52
12) EMA SERIAL COMMUNICATION PROTOCOL____________________________________53
13) Notes_____________________________________________________________________53

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1) MAIN INFORMATION
1.1) INTRODUCTION
EMA-D9 was engineered and tested in compliance with IEC 348 class 1 standard 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 EMA-D9 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.
EMA-D9 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 EMA-D9 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 backlit alphanumeric LCD display of 2x20 characters.
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 50081-1 1992 - EN 55022-CLASS B CISPR 22
IMMUNITY = EN 50082-1 (light industry), 1992
IEC 1010-2
IEC 1036 (cl.1)

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2) TECHNICAL FEATURES
2.1) GENERAL SPECIFICATIONS
Power supply / Auxiliary voltage
90-250 V 50/60 Hz/cc.
20-60 V 50/60 Hz/cc (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 EMA-D9 Model EMA-D9-1A
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)
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.
Protocols: ASCII and Modbus.
Second serial output RS485 isolated (optional).
Input signals
2 passive opt isolated inputs (1000V), 12 - 24 Vdc.
4 passive opt isolated inputs (1000V), 12 - 24Vcc (option).
Output signals
2 photomos outputs 12-260 Vca-cc / 100mA max (series).
Memory data retention
RAM: 128 KB (useful 50KB); 1 Mbyte (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), Energy, Samples.
Display interface
Alphanumeric LCD 2x20 characters at high contrast (adjustable) and with led backlight.
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 42 front (EN60529).
IP 20 behind.
Weight and dimension
0,5 kg app. (equipped with 2 digital outputs, 2 digital inputs, RS485 and RS232, Memory 128Kbytes),
9 module (17,5mm) case, for mounting on DIN 35mm section iron.
158 33
90
EN TE R
S
T
WX
48
78
45 62

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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
Voltage: < 0.5 %
Current: < 0.5 %
Power: < 1 %
Energy: < 1 %
Power Factor: < 1 %
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
2.3) PROGRAMMABLE PARAMETERS (SETUP SECTION)
VT and CT ratio.
Mode, insertion type (4 wires, 3 wires, Aron).
Integration time of Av. power.
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 SL1 - SL2 - SL3 (VA)
THREE-PHASE SYSTEM APPARENT POWER S (VA)
ACTIVE POWER PL1 - PL2 - PL3 (W)
THREE-PHASE SYSTEM ACTIVE POWER P (W)
REACTIVE POWER QL1 - QL2 - QL3 (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

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Harmonic analyzes:
Cooley - Tukey algorithm.
dt
Qh Φ Qh Φ
dt
Wh Φ Wh Φ
AL AL AL AΦ
QL QL QL QΦ
WL WL WL WΦ
IIL
IL L
IΦ
VVL
VL
L
VΦ
P
vLijk
VLij
dt
QLi
QhLi
P
k
∫
∞
=
∫
∞
=
++=
++=
++=
+
+
=
+
+
=
=
∫
∞
=
∑
=
033
EnergyReactive
0
33
EnergyActive
321
3
rentPhaseAppea-3
321
3
PowerReactivePhase-3
321
3
PowerActivePhase-3
3
32
1
3
CurrentSystemPhase-3
3
3223
12
3
VoltageLinePhase-3
2
VoltageLine
0
EnergyReactive
1
64N1-Nk0
N
πnk2
1N
0n
sinh(n)j
1N
0n N
πnk2
cosh(n)H(k)
=≤≤






∑
−
=
−
∑
−
=





=
for

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3) INSTRUMENT DESCRIPTION
The front panel of the EMA-D9 is described on the following section:
1-DISPLAY
Alphanumeric LCD backlighting, 2x20 characters, dot pitch 0.65mm x 0.70mm, dot size 0.60mm x
0.65mm, angle of view 35°, positive visualization at low reflection.
2-KEYBOARD
In the “Acquisition Mode” the "up", "down", “left” and “right” arrows allows to skip through the
measuring page of the instrument. Pressing the "Enter" key for 3 seconds set the displayed page as
default page. The “Enter” key allows also to display the name of the page showed.
In the “Setup Mode” all the buttons are used to program the instrument.
3- LOWER TERMINAL BOARD
The lower terminal board is numbered from 1 to 27 (from left).
4- HIGHER TERMINAL BOARD
The higher terminal board is numbered from 28 to 54 (from left).
For the pin-out of the terminal boards see the chapter Cap. 6).

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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 (es. Schurter FSF).
•Always disconnect the instrument from all power sources before opening it for maintenance a/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.
•Instrument operation is no longer safe:
A) when the instrument shows clear signs of damage.
B) when 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
4.3) MOUNTING
The instrument is suitable for mounting on DIN 35mm section iron.
For the connection the instrument has suitable screw terminal boards.
Suggested is to install the equipment on vibration free switchboards and with an environmental
temperature ranging between -10 °C and +50°C.
!

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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 OF THE 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 NRG (or relative
serial commands) it’s possible to download all storing data to avoid to losing same.
The battery is located on the lower side of the circuit with push button.
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 protection cap of the instrument. It’s necessary to incline the protection cap from 45°
to 90° respect the closing position and to pull it in the direction of the user. Initially come out the
left part and after the right part.
3) Remove the badge, spreading out the longer borders of the cage in the way to insert a flat
screwdriver between the border and the badge and to lever up.
4) It’s necessary to pay attention to presence of residual voltage inside the instrument. Don’t touch
any other component different from the battery circuit.
5) Using a pipe spanner (5,5mm) unscrew the 4 nuts showed in the picture.
6) Unthread the boards with push button to pull it in the direction of user. It’s better to insert a plier in
the 2 holes (A and B) of the board.
7) There are 2 solutions: change only the battery or all of board. To change the battery it’s necessary
to unsolder the uncharged battery and to solder the new battery (to pay attention to both
operations). To change the board, contact Contrel Elettronica Srl to see the availability in the
storehouse.
8) The new circuit or the old with the new battery come inserted inside the instrument. Look in the 2
holes (A and B) to verify the correct linked between the 8 pin-strips with the 2 relative supports.
9) To screw the 4 nuts.
10) Apply the badge. To insert in a slanting direction the short side of the badge in the left part, then to
lower and to press the badge on the right side.
11) To insert the protection cap in the hole of right and inclining it in the same way indicated at the
point 2) to poke in its seat.
12) Restore all the connection and turn on the instrument.
13) In the Warnings page is possible to check the condition of battery (BATTERY OK).
NUTS
HOLE A
HOLE B

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6) CONNECTION
Connection Table
Connector Name Connector Name
1 A+ (Uaux) 28
2 29
3 A- (Uaux) 30
4 31 +5V
5 32 0V
6 33 B2 (RS485 option)
7 34 A2 (RS485 option)
8 35 B1 (RS485)
9 36 A1 (RS485)
10 37 Tx (RS232)
11 L1 (V line 1) 38 Rx (RS232)
12 39 COM (RS232)
13 L2 (V line 2) 40
14 41
15 L3 (V line 3) 42 1+ Digital Output
16 43 1- Digital Output
17 N (Neutral) 44 2+ Digital Output
18 45 2- Digital Output
19 S1 (I1) 46 1+ Digital Input
20 S2 (I1) 47 1- Digital Input
21 S1 (I2) 48 2+ Digital Input
22 S2 (I2) 49 2- Digital Input
23 S1 (I3) 50 3+ Digital Input (option)
24 S2 (I3) 51 4+ Digital Input(option)
25 52 5+ Digital Input(option)
26 53 6+ Digital Input(option)
27 54 3,4,5,6- Digital Input(option)

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6.1) POWER SUPPLY
The instrument doesn’t work without power supply.
Before powering the instrument verify always to insert the right value (90-250 Vac/dc
standard; 20-90 Vac/dc OPTION).
The instrument is equipped with an internal protection fuse on the power supply, type 5x20mm
dimensions, 315mA 250V, Fast (es. 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 remove the cover of lower terminal board on the left and change the fuse that is near the power
supply connector (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.
6.2) VOLTAGE INPUTS
EMA-D9 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 2.5mm2attach them to the voltage measurement screw
terminals.
Connect the instrument following up the wiring diagrams described on chapter 6.4).
EMA-D9 was developed and tested in accordance with IEC 348 class 1 standard for operating
voltages up to 600 Vac rms.
6.3) CURRENT INPUTS
Connect the instrument following up the wiring diagrams described on chapter 6.4).
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.
WARNING: to prevent accidentally disconnection of the current input, EMA-D9 is equipped
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.
!
!
!
!

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6.4) WIRING DIAGRAMS
3 wires insertion, 2 current transformers
3 wires insertion, 2 current transformers and 2 voltage transformers
LOAD
L3
L2
L2
L1
L1
ENTER
S
T
WX
+++ -
--
L3
LOAD
L3
L2
L2
L1
L1
ENTER
S
T
WX
+++ -
--
L3
1
127
27
P1 P2
S1 S2
P1 P2
S1 S2
P1 P2
S1 S2
P1 P2
S1 S2

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LOAD LOAD
L3
L3
L2
L2
L2
L2
L1
L1
L1
L1
ENTER
ENTER
S
S
T
T
W
W
X
X
P1
P1
P1
P1
P2
P2
P2
P2
S1
S1
S1
S1
S2
S2
S2
S2
+
+
+
+
+
+
-
-
-
-
-
-
L3
L3
N
N
1
1
27
27
N
N
4 wires insertion, 3 current transformers and 3 voltage transformers
4 wires insertion, 3 current transformers

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LOAD
LOAD
L3
L2
L2
L2
L1
L1
L1
L1
ENTER
ENTER
S
S
T
T
W
W
X
X
P1
P1
P1
P2
P2
P2
S1
S1
S1
S2
S2
S2
+
+
+
+
+
+
-
-
-
-
-
-
L3
L3 N
1
1
27
27
N
N
Single fase insertion, 1 current transformer
4 wires insertion, 3 current trnsformers and 2 voltage transformers

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7) INPUT/ OUTPUT DEVICES
7.1) STANDARD DIGITAL INPUTS
The EMA-D9 has 2 opt isolated inputs, power supply from 12 to 24Vdc.
For the digital input setup please consult the chapter 10.8).
If long distances must be covered, the wires connected to the EMA-D9 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.
+12 ÷ 24 Vdc
+12 ÷ 24 Vdc