Contrel EMA-D6 User manual

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INSTRUCTION MANUAL
IM114-U v0.2
EMA-D6
DIN rail network analyzer
with basic power quality analysis

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WARNING!
•Carefully read the manual before the installation or use.
•This device is to be installed by qualified personnel, complying to current standards, to avoid damages.
•Before any maintenance operation on the device, remove supply inputs.
•The manufacturer cannot be held responsible for electrical safety in case of improper use of the equipment.
•Products illustrated herein are subject to alteration and changes without
prior notice.
Introduction
The EMA-D6 is a Network Analyzer for displaying all the relevant system parameters in low and medium voltage power distribution. It is capable of single-phase,
two-phase or three-phase measurement and can be used in two-wire, three-wire, four-wire, TN, TT and IT systems.
Thanks to its large measured voltage range, the EMA-D6 with multi-range power supply can be connected in any low and medium voltage system up to a rated
system voltage of 690 VAC.
Higher voltages can be measured using voltage transformers. For measuring current, either x/1 A or x/5 A current transformer can be used or Rogowski coil
(optional), TT/TTA sensors (optional) or 333 mV (optional).
The combination of four function keys with the multi-language plaintext displays makes intuitive user prompting possible. The graphic color LCD offers user-friendly
interface.
The RS-485 or Ethernet interface or an optionally available interface module can be used for communication. In addition, the EMA-D6 has a multifunctional digital
output using an alarm. The analyzer can accept up to 4 digital inputs. The parameters can be set either direct on the device or via the communications interface.
Password protection is integrated via the front of the device to guard against unauthorized access.
Description
•Modular DIN-rail housing, 6 modules
•Backlighted LCD display
•True RMS measurements
•For current transformers x/1 A and x/5 A, Rogowski coil (optional), TT/TTA sensors (optional), 333 mV (optional)
•Keyboard with 4 keys for viewing and setting
•Easy and fast navigation
•Derivation of more than 50 measured variables from the basic measured variables with maximum, minimum, average and max demand values
•Continuous sampling (128 @ waveform)
•High measuring accuracy
•Harmonics V, I up to 63th order (optional)
•Up to 4 digital outputs
•Up to 4 digital inputs
•Up to 2 RS-485 communication (Modbus RTU protocol) (COM2 optional)
•ETHERNET interface (Modbus TCP protocol) (optional)
Voltage measurement
- Direct measurement on the system or using voltage transformers. External voltage transformers are required to measure higher voltages than the permissible
rated input voltages.
- Measuring voltage to 400 VAC / 690 VAC with multi-range power supply. The device is designed for measuring input voltages up to 400 VAC to the neutral
conductor and 690 VAC to Vph-ph.
Current measurement
- Measuring current of 1 A or 5 A for connecting standard current transformers. Rogowski coil (optional), TT/TTA sensors (optional).
Neutral or differential measurement
- The fourth current input channel (I4) is used to measure the current on the neutral line or differential current.
- If the CT for the neutral wire is not available, the measure of I4 input will be calculated from the phase currents.
LED and keyboard functions
A
Display
B
LED ON: presence of auxiliary supply
C
Communication traffic LED
D
Energy pulsing LED
E
LED used for notifications (alarms, warnings, errors)
F
Cancellation or navigation key among the visualization pages
G
Up
H
Down
I
Confirmation or navigation key among the visualization pages

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Installation
1. Turn off all power supplying this device and the equipment in which it is installed before working on it.
2. Always use a properly rated voltage sensing device to confirm that all power is off.
Removing from a DIN rail
1. Using a flat screwdriver (≤ 6.5 mm / 0.25 in), lower the locking 2. Lift the device up to free it from the DIN rail.
clip to release the device.
First commissioning
At first power up of EMA-D6 network analyzers, wizard procedure will guide the user in the first commissioning steps:
1. Set the language (please refer to section “Utility menu”)
2. Set the type of wiring connection (please refer to section “Measure menu - Wiring connection”)
3. Set the current transformers primary and secondary (please refer to section “Measure menu - Transform ratio”)
4. Set the neutral current transformers primary and secondary (please refer to section “Measure menu- Transform ratio”)
5. Set the voltage transformers primary and secondary (please refer to section “Measure menu- Transform ratio”)
6. Set the date and time on the device (please refer to section “General menu - Date & Time”)
Access to device
The network analyzer features a front panel with signaling LEDs, a graphic color display and contextual menu buttons for accessing the information required to
operate and modify parameter settings. The navigation menu allows you to display, configure and reset parameters.
General display
The general display of the power metes is shown in the following picture:
A
Title bar
B
Favorite page
C
Phase indication
D
Measurements and unit of measure
E
Cancellation or navigation key among the visualization pages
F
Up
G
Down
H
Confirmation or navigation key among the visualization pages
I
To enter the menu and configuration mode
Info menu
Menu
Description
Device
Revision software-Revision hardware-Serial number-Info wiring-Work hours-Options info
I/O
Digital input/output status-Analog output status
Setpoint
Info setpoints
Date/Time
Time and date
COM monitor
Communication traffic (RS-485 and Ethernet)
Log summary
Info logs
Log details
Viewing logs
ON/OFF events
Power supply switch ON/OFF

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Table of display pages
•INST = Instantaneous value –Actual instantaneous value of reading, shown by default every time the page is changed
•MAX = Highest peak –Highest peak of the instantaneous value of the relative reading. They can be cleared using dedicated command (see reset menu).
•MIN = Lowest peak –Lowest value of reading. They can be cleared using the same command used for MAX values.
•AVG = Average value –Time-integrated value of reading. Allows showing measurements with slow variations.
•MD = Maximum Demand –Maximum peak of the integrated value.
PARAMETER
Selection with ▲and ▼
INST
MAX
MIN
AVG
MD
1
PHASE-TO-PHASE VOLTAGES - V(L1-L2), V(L2-L3), V(L3-L1), V(SYS)
●
●
●
●
2
PHASE-TO-NEUTRAL VOLTAGES - V(L1-N), V(L2-N), V(L3-N), V(L-N)
●
●
●
●
3
PHASE AND NEUTRAL CURRENTS - I(L1), I(L2), I(L3), I(N)
●
●
●
●
●
4
POWER FACTOR - PF(L1), PF(L2), PF(L3), PF(SYS)
●
5
COS-PHI - COS-PHI(L1), COS-PHI L2), COS-PHI(L3), COS-PHI(SYS)
●
6
TANGENT-PHI -TAN-PHI(L1), TAN-PHI(L2), TAN-PHI(L3), TAN-PHI(SYS)
●
7
ACTIVE POWER - P(L1), P(L2), P(L3), P(SYS)
●
●
●
●
●
8
REACTIVE POWER - Q(L1), Q(L2), Q(L3), Q(SYS)
●
●
●
●
●
9
APPARENT POWER - S(L1), S(L2), S(L3), S(SYS)
●
●
●
●
●
10
VOLTAGE TOTAL HARMONIC DISTORTION - THD-V(L1), THD-V(L2), THD-V(L3)
●
11
CURRENT TOTAL HARMONIC DISTORTION - THD-I(L1), THD-I(L2), THD-I(L3)
●
12
VOLTAGE CREST FACTOR
●
13
CURRENT CREST FACTOR
●
14
FREQUENCY - F(L1), F(L2), F(L3), F(SYS)
●
●
●
●
15
ENERGY METERS
kWh+(TOT), kWh-(TOT), kVArh+(TOT), kVArh-(TOT), kVA(TOT)
kWh+(L1), kWh-(L1), kVArh+(L1), kVArh-(L1), kVA(L1)
kWh+(L2), kWh-(L2), kVArh+(L2), kVArh-(L2), kVA(L2)
kWh+(L3), kWh-(L3), kVArh+(L3), kVArh-(L3), kVA(L3)
●
16
PHASE ANGLE V-V
●
17
PHASE ANGLE V-I
●
18
* VOLTAGE HARMONICS DISTORTIONS - H2…63 V(L1)-V(L2)-V(L3)
●
19
* CURRENT HARMONICS DISTORTIONS - H2…63 I(L1)-I(L2)-I(L3)
●
* only version EMA-D6 H
Parameter setting (SETUP)
- At normal display of readings, to enter configuration mode, press ▲and ▼keys.
- Select the required sub-menu with ▲▼keys and confirm with
- To exit setup and go back to the readings viewing press
- The following table show the available sub-menus:
Menu
Description
General
Date and time, language, password, display utility, reset commands
Measure
CT and VT ratio, type of wiring, frequency, dip/swell configuration, measurements settings, energy preload
User pages
User-defined pages
Communication
Communication port parameters (COM1, COM2, Ethernet)
I/O
Digital outputs, digital inputs, analog outputs
Setpoint
Limit thresholds on readings
Log
Data recording settings
Logic expression
Programmable mathematical calculation functions (sum of meters, relations between quantities, etc.)
Modifying parameters
To modify the setting of one parameter, select it with ▲and ▼keys and then press
There are two methods for modifying a parameter, depending on the type of parameter:
•Selecting a value in a list (for example, selecting SINGLE-PHASE from a list of available wiring connections).
•Modifying a numerical value, digit by digit (for example, entering a value for the date, time or VT primary).
Selecting the value in a list
To select a value in a list:
1. Use the ▲or ▼keys to scroll through the parameter values until you reach the desired value.
2. Press to confirm the new parameter value. The entered value is stored.
Modifying the numerical value
When you modify a numerical value, the digit on the far right side is selected by default. To modify a numerical value:
1. Use the ▲or ▼keys to modify the selected digit.
2. Use the ◄or ►keys to shift to the next digit.
3. Press to confirm the new parameter value. The entered value is stored.
- Each parameter is show with present value and the possible range values.
NOTE: If you enter an invalid setting and press , the message “Value out of range”will appear on display.

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Harmonic analysis page (optional)
- The EMA-D6 provides the harmonic analysis up to 63rd order of the following measurements:
•phase-to-phase voltages
•phase-to-neutral voltages
•currents
- For each of these measurements, there is a display page that graphically represents the harmonic content using a bar graph.
- Every column is related to one harmonic order, even and odd.
- Every display page is related to each phase L1, L2, L3.
- The value of the harmonic content is expressed as a percentage.
- It is possible to show the harmonic content in numeric format, pressing ►button.
- The vertical scale of the graph is automatically selected, depending on the column with the highest value.
Waveform page
- These pages graphically view the waveform of the measured voltages and currents.
- It’s possible to see one phase at the time, selecting it with ►button, or 3 phase system page.
- The vertical scale is automatically scaled in order to fit the waveforms on the screen.
- The graph is automatically updated every refresh time selected by the user (DISPLAY menu).
- Every page shows the total harmonic distortion (THD) and the instantaneous value for each these measurements.
Trend graph page
- The trend graph page allows to show the changes in the time of phase-to-neutral voltages and currents. This functionality provides a real-time snapshot of network
condition.
- It’s possible to see, on the graph, the history of last 60 values of the measurement, each correspondent to every 2 seconds of instantaneous value.
- When the maximum storing capacity is exceeded, the newest data will overwrites the oldest, so that the most recent data is always shown.
- The vertical full-scale is calculated automatically.
Power bar-graph page
- This page graphically view the daily power consumption (24 hours) of the active and reactive powers read by the EMA-D6.
- It’s possible to see one day at a time, selecting it by clicking ►button.
- The vertical full-scale is calculated automatically, depending on the column with the highest value.

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Energy bar-graph page
- These pages graphically view the daily, weekly, monthly and yearly energy counters consumption of the active (IN and OUT) and reactive (IN and OUT)
energy read by the EMA-D6. For every graph, the unit displays the 4 total counters (Wh IN, Wh OUT, VArh IN, VArh OUT).
- It’s possible to see one day at a time, selecting it by clicking ►button.
- It’s possible to clear completely through the dedicated command in the RESET menu.
- If a count is not available, then some empty spaces are shown.
Phasors page
- The phasor diagram shows voltages and currents in relation to each other.
- The currents are depicted within the inner circle while the voltages are shown within the outer circle.
- It’s possible to see, on the this page, the angle value between the phasors.
User pages
- The user can create a maximum of 4 favorited display pages .
-Each of these pages can view maximum 6 measurements, freely chosen among all reading of the EMA-D6.
- The title of the page can be freely programmed by the user.
- Like all other pages, it’s possible to set the analyzer to return automatically to the user page after a time has elapsed.
- To define the user page, see the dedicated menu USER PAGE chapter.
Time and date
- The EMA-D6 manages the date and time, that is used for storage of events, for measurements log and for time-related functionalities.
- The EMA-D6 is equipped with RTC (real-time clock), then the time and date are kept updated even without auxiliary power supply, for a maximum of about 1 week.
- Setting date and time is mandatory in order to use the time-related functionalities on the device (maximum, minimum, historical).
Password access
- The password is used to enable or lock the access to:
•setting menu
•display viewing
•keys
•communication
- For new devices, the password management is disabled and the access is free. If instead the password have been enabled, then to get access or change any
configuration of the device, it’s mandatory to enter the password.
- The password is valid as soon as the user remains in the Configuration section or others lock sections and for a max setting minutes (see the dedicated menu
PASSWORD chapter).
- After quitting the Configuration section or others lock sections, it’s needed to enter again the password.
Additional resources
- The options provide additional resources that can be used through a dedicated setup menus.
- The following table indicates the optional additional resources:
TYPE
Function
Max Number
Communication
RS-485
2
Ethernet
1
Digital I/O
Outputs
4
Inputs
4
2 Inputs + 2 Outputs
2+2
Analog I/O
4 Analog Outputs (external module)
4
8 Analog Outputs (external module)
4
Memory
Data memory 4MB
1

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Communication channels
- The EMA-D6 supports a maximum of 2 RS-485 communication channels (COM1 and COM2) and a maximum of 1 Ethernet port.
- The communication channels are completely independent and can communicates at the same time.
Daisy-chaining devices to the network analyzer
The RS-485 slave port allows the network analyzer to be connected in a daisy chain with up to 32, 2-wire devices. See Figure below.
Setpoint thresholds
- The setpoint thresholds are internal variables whose status depends on the out of limits of one particular measurement set by user among all those measured
(example: active power higher than 40 kW).
- For each setpoint, there are 2 thresholds (upper and lower). The upper threshold must always be set toa value higher than the lower threshold.
- For every setpoint is possible to set a delay when alarms is triggered on and off.
- When specific conditions are met, alarms is turned on or off. Triggering of alarms can be registered in the devices notifications log, in the events section, increasing
timer. In addition to that, they can be set up to control digital outputs of the device.
- There are two types of setpoints available on EMA-D6: simple setpoint and “complex”condition to a setpoint using Boolean logic variables (AND, OR).
- For setpoint thresholds programming and definition refer to setup menu SETPOINT chapter.
For more information on how the meter handles the setpoint-driven alarms, refer to the figure below.
Data logger function
- The data logger allows to store at regular interval up to 14 variables chosen freely among the multimer measures.
- Every record is marked with a timestamp taken from the internal real-time clock. The minimum sampling period (distance between two records) is of 1 second.
- Considering the amount of memory, the number of variables to be stored and sampling period, the unit indicates the time that must elapse before the memory is
completely filled.
- The recording can be continuous (driven only by regular time intervals) or conditional (between a specified date/time range), driven only by the status of the internal
variables (setpoint) or digital input status.
- When the memory is full, the user can choose to stop the recording (End Memory mode) or to continue overwriting the oldest records (FIFO mode).
- The display page dedicated to the data logger info (MENU - INFO - LOG SUMMARY) shows all the fundamental information: number of records, sampling,
available free memory, residual time before the memory if filled (when working in End Memory mode).
A
The measurement monitored by setpoint.
B
Trigger delay.
C
The alarm is turned on.
D
The alarm is turned off.
Upper threshold
Lower threshold
Hours
Recording status
Sampling period
Percentage of used
memory
Time left before end
of memory
expressed in days
hh:mm

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Configuration setup menu tree
NOTE: * thanks to supported expansion module MR-AO
Setup
General
Measure
User pages
Communication
I/O
Setpoint
Log
Logic expression
Password
Reset
Date / Time
Utility
Display
Graphics
Editing contacts
Transform ratio
Time window
Frequency
DIP / SWELL
Wiring / Convention
Type / Modality
Energy / Counter
Ethernet LAN
COM 1
COM 2
Digital outputs
Digital inputs
Analog outputs *
Parameters
Text
Generic
Smart
Preload energies
Mode
Daily plan
Period plan
Holiday

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Parameters table
Below are listed all the programming parameters. For each parameter are indicated the setting range, the factory default, as well as a description of the function.
GENERAL menu
PASSWORD
UoM
Default
Range
1
Level 1 (viewing)
-
0
0 (OFF)-999999999
2
Level 2 (setup)
-
0
0 (OFF)-999999999
3
Key enabling
min
5
1-60
4
Key lock
-
NO
YES-NO
5
Communication lock
-
NO
YES-NO
6
Enable options
-
0
0 (OFF)-999999999
NOTE: Password Recovery. If you forget your password, contact Technical Support.
1- When the password is defined, value to be specified to allow the user to scroll the pages.
2- When the password is defined, value to be specified to get user configuration access.
3- Setting the minutes for which the password enables the protected functions.
4- If set to YES, the password protects the use of the keys. Enter numeric code to unlock the keys.
5- If set to YES, the password protects the communication setup messages on the serial or TCP bus.
6- Numeric code that unlock firmware functions.
RESET
Range
1
Global
All device parameters are resetted to factory default value.
2
Setup to default
All setup parameters are resetted to factory default value.
3
All energies
Clears total and tariff energy meters.
4
TB energies
Clears tariff energy meters.
5
Counters
Clears counters.
6
TB counters
Clears tariff counters.
7
MIN-MAX
Reset of MAX and MIN peaks of all readings.
8
Max Demand
Reset of Max Demand of all readings.
9
Energy graphs
Clears the energy graphics.
10
Log setpoint
Clears the alarm log events.
11
All log
Clears the log memory (both events and measurements log).
12
ON / OFF events
Clears the power supply switch ON/OFF events.
13
Setpoint DO
Manual command in order to reset the digital output of the alarm setpoint.
14
DIP / SWELL
Clears the DIP / SWELL log memory.
DATE AND TIME
- The EMA-D6 manages the date and time, that is used for the storage events and for time-related functions. The EMA-D6 is equipped with a module with RTC
(real-time clock), then the time and date are kept updated even without auxiliary power supply, for a maximum of about 1 week.
UTILITY
Default
Range
1
Language
English
English
Italiano
Deutsche
Francais
Svenska
Espanol
2
Theme
Blue-Black
Blue-Black…White
Red-Black…White
Yellow-Black…White
Grey-Black…White
3
Font dimension
Standard
Standard-Big
4
Set-point alert
OFF
ON-OFF-First Out
5
Protocol
Standard
Standard-(old EMA devices)
4- When it is activated the display page switches automatically on the alarm page, and the alarm is shown with the Warning icon.
5- When it is selected the old devices, the communication protocol switches on the old EMA-90.
DISPLAY
UoM
Default
Range
1
Brightness
-
15
1-15
2
Default page return
-
NO
NO-YES
3
Stand-by
-
YES
NO-YES
4
Stand-by time
min
10
1-60
5
Refresh
ms
4
1-60
1- Set up the level of brightness display.
2- If set to NO the display will remains in the page where the user left it. If set to a time delay, after that time the display page goes back to page set as default.
4- Set up the time after that the display will switch off. The lifetime of the graphical display depends on its brightness and stand-by time. It is highly recommended to
limit the brightness level of the display in order to ensure a longer lifetime of the device.
5- Display update time. Note: 1 = 250 ms

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MEASURE menu
TRANSFORM RATIO
UoM
Default
Range
1
CT primary
A
1
1-400000
2
CT secondary
A
1
1-400000
3
CT N primary
A
1
1-400000
4
CT N secondary
A
1
1-400000
5
VT primary
V
1
1-400000
6
VT secondary
V
1
1-400000
Note: If Rogowski coils are used, it is not needed to set any transformation ratio.
1- CT primary winding rated current.
2- CT secondary winding rated current.
3- CT Neutral primary winding rated current.
4- CT Neutral secondary winding rated current.
5- VT primary winding rated current.
6- VT secondary winding rated current.
INTEGRATION
UoM
Default
Range
1
Time interval
min
15
1-2-3-5-6-10-12-15-20-30-60
2
Type
-
Shifting
Shifting-Fixed
1- Selection the integration time interval.
2- Selection of average reading calculation mode:
Shifting = The instantaneous values are integrated for a period.
Fixed = Readings are integrated for a fixed rated. Every time the integration time elapses, the average value is updated with the result of the last integration.
FREQUENCY
UoM
Default
Range
1
Fundamental
Hz
50
50-60
1- Rated frequency of the line. Possible nominal frequency values: 50 Hz or 60 Hz.
DIP / SWELL
UoM
Default
Range
1
DIP threshold
mV
190000
10-10000000
2
DIP cycles
cycles
250
1-10000
3
SWELL threshold
mV
270000
10-10000000
4
SWELL cycles
cycles
250
1-10000
5
Interruption threshold
mV
205000
10000-2000000000
6
Interruption hysteresis
mV
275000
10000-2000000000
7
Storage
-
End memory
FIFO
End memory
1- Threshold active when the voltage is lower than value set.
2- The duration of voltage dip. Note: 1 = 20 ms
3- Threshold active when the voltage is higher than value set.
4- The duration of swell over-voltages. Note: 1 = 20 ms
5- Voltage interruption begins when the RMS value falls below this threshold. A voltage interruption ends when the voltage is equal to, or greater than, interruption
threshold plus the hysteresis.
6- Hysteresis delay on voltage interruption.
7- When the memory is full, the user can choose to stop the recording (end memory) or to continue overwriting the oldest records (FIFO).
WIRING / CONVENTION
UoM
Default
Range
1
Wiring
-
3 phase (4 or 3 wires)
3 phase (4 or 3 wires)
ARON
3 phase balanced
3 phase multiload balanced
Single phase
Single phase multiload
Triple single phase
Two-phase (3 wires)
2
4th input current
-
Measured
Computed-Measured
Differential-Differential filter
3
PF convention
-
SIGN
SIGN-IEC-IEEE
4
Setpoint timing
s
1
0.1 or 1
1- Set this parameter according to the used wiring diagram. See wiring diagrams section on the manual.
2- The fourth current input channel (I4) is used to measure the current on the neutral line or differential current. If the CT for the neutral wire is not available, the I4
input can be calculated from the phase currents.
3- The meter shows positive or negative power factor according to selected standard.
4- Set the setpoint intervention time.