Contrel EMS-96 User manual

EMS-96
Electrical Measurement Supervisor
User Manual
IM1200-U v1.6

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 2 / 48
Index
Description.......................................................................................................................................................................................... 4
Configuration Models ..................................................................................................................................................................... 4
Software Options ............................................................................................................................................................................ 4
Measures Table............................................................................................................................................................................... 4
Installation .......................................................................................................................................................................................... 5
Connections ........................................................................................................................................................................................ 5
Auxiliary power supply.................................................................................................................................................................... 6
Voltage Inputs ................................................................................................................................................................................. 6
Current Inputs ................................................................................................................................................................................. 6
Digital Outputs ................................................................................................................................................................................ 9
Digital Inputs (option) ..................................................................................................................................................................... 9
Analog outputs (option).................................................................................................................................................................. 9
I/O options .................................................................................................................................................................................... 10
Serial ports (option) ...................................................................................................................................................................... 12
Profibus port (option) ................................................................................................................................................................... 12
Ethernet port (option)................................................................................................................................................................... 13
MBUS (option)............................................................................................................................................................................... 13
Function keys .................................................................................................................................................................................... 14
Frontal led......................................................................................................................................................................................... 14
First configuration............................................................................................................................................................................. 14
Maps ................................................................................................................................................................................................. 15
Menu............................................................................................................................................................................................. 15
Measures....................................................................................................................................................................................... 17
Graphics ........................................................................................................................................................................................ 19
User Pages..................................................................................................................................................................................... 20
Setup ............................................................................................................................................................................................. 21
Information ................................................................................................................................................................................... 23
Setup Items ....................................................................................................................................................................................... 24
General.......................................................................................................................................................................................... 24
Measure ........................................................................................................................................................................................ 26
Energies and Counters .............................................................................................................................................................. 30
User pages..................................................................................................................................................................................... 32
Communication............................................................................................................................................................................. 34
I/O ................................................................................................................................................................................................. 36
Setpoint......................................................................................................................................................................................... 38
Log................................................................................................................................................................................................. 41
Math.............................................................................................................................................................................................. 45
Acronym tables ................................................................................................................................................................................. 46
Acronyms group table................................................................................................................................................................... 46
Acronyms table of Instantaneous group....................................................................................................................................... 46
Acronyms table of Energies and TB (from 1 to 16) groups ........................................................................................................... 46
Acronyms table of Average group ................................................................................................................................................ 46
Dimensions ....................................................................................................................................................................................... 47
Technical features............................................................................................................................................................................. 47

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 3 / 48
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.

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 4 / 48
Description
The EMS (Electrical Measurement Supervisor) has advanced analysis functions that allow the measurement of the main electrical
parameters: voltage, current, frequency, power factor, active and reactive power, active and reactive energy. The instrument
allows the measurement and analysis in real time of electrical parameters, also verifying the quality of the energy thanks to THD
measurement. Bidirectional metering of energy allows both production and consumption of energy to be monitored with asingle
device. All information monitored by the analyzer can be transmitted to remote locations through communication interfaces
RS485, Ethernet with the support of numerous protocols including Modbus RTU, Modbus TCP/IP and Profibus DP. Interaction
with the control and supervision systems is possible using inputs and outputs, all programmable. EMS reads and displays the
energy values measured in other energy meters connected to the network. This is achieved thanks to digital inputs, which are
able to acquire the impulses generated by the counters. In this case, EMS acts as adata concentrator. It not only collects
information from the electricity meters but also from the water, gas meters or other. EMS allows acomplete, in-depth analysis of
the network quality thanks to the measurement of the harmonic distortion (20th order) of the voltage and current signals.
Configuration Models
Model
Class
CT
4th current input
Supply
I/O
COM1
COM2
Exp. Mem.
EMS-96
1
1A
5A
TTA50
TTA100
Neutral current
Differential input 1A
Differential input 5A
Differential input 50A
90÷250
Vac/dc
20÷60
Vac/dc
2DO
2AO
2AO+2DO
4AO
4AO+2DO
RS485
RS485
Profibus
MBUS
LON
ETH/Modbus*
ETH/Modbus* + Wifi
---
EMS-96H
1
0.5S
0.2S
2DO
2DO+4DI
4DO+2DI
6DO
2AO
2AO+2DO
4AO
4AO+2DO
RS485
Option
EMS-96-ETH/WEB**
RS485
/S***
Wifi
/S*** + Wifi
OPTION STANDARD
* Ethernet port with Modbus TCP/IP protocol
** Ethernet port with Modbus TCP/IP protocol and Web server
*** RS485 managed by ETH port
Software Options
Model
Timeband* & Preset
Harmonics & SAG
Energy Graphics & Log
EMS-96
to enable
to enable
to enable
EMS-96H
enabled
enabled
enabled
EMS-96-ETH/WEB
enabled
enabled
enabled
* 4 Timebands, optionally is possible to choose 8 or 16 Timebands
To enable one or more options it’s necessary to input a code (Enable option item) in the instrument setup. If the options are
requested at the moment of the order the code is already loaded and showed on the instrument report. After the installation, to
enable one or more options it is necessary to request the code to the seller, sending the serial number. The seller will deliver the
new code to load in the instrument setup.
Measures Table
Parameters
System
L1
L2
L3
Min-Max Rel.
Min-Max Abs.
Average
Max Demand
Voltage L-N
X
X
X
X
X
X
X
X
Voltage L-L
X
X
X
X
X
X
Current
X
X
X
X
X
X
X
X
Power Factor
X
X
X
X
X
X
X
X
Cos
X
X
X
X
X
X
X
X
Tan
X
X
X
X
X
X
X
X
Active Power
X
X
X
X
X
X
X
X
Reactive Power
X
X
X
X
X
X
X
X
Apparent Power
X
X
X
X
X
X
X
X
Frequency
X
X
X
X
X
X
X
X
THD Voltage
X
X
X
X
X
X
THD Current
X
X
X
X
X
X
Harmonics
X*
X*
X*
Active Energy OUT
X
X
X
X
Reactive Energy IN
X
X
X
X
Reactive Energy OUT
X
X
X
X
Apparent Energy
X
X
X
X
Expected Power
X
X
X
X
SAG
(X)*
(X)*
(X)*
(X): only the selected electric line *: option

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 5 / 48
Installation
Warning for the user
Read carefully the instructions/indications contained in this manual before installing and using the instrument.
The instrument described in this manual is intended for use by properly trained staff only.
Safety
This device has been manufactured and tested in compliance with EN 61010-2 standards. In order to maintain these conditions
and to ensure safe operation, it need to comply with the indications and markings contained in the manual.
When the device is received, before beginning installation, check that it's O.K. And it has not suffered any damage during
transport.
When starting installation make sure that the operating voltage and mains voltage are compatible with the device instructions.
The device power supply must not be earthed.
Maintenance and/or repair must be carried out only by qualified and authorized personnel. If there is ever the suspicious that,
that there is a lack of safety, during operation, the device must be disconnected and cautions taken against accidental use.
Operation is no longer safe when:
- The instrument doesn't work.
- The measured value are obviously wrong or unreasonable.
- There is visible damage.
- After serious damage incurred during transport.
- After a storage under unfavourable conditions.
During normal operation of the devices, hazardous voltages at its terminals and in particular on the terminals of voltage and
current transformers connected and on the terminals of the digital input and outputs.
The secondary circuits of the voltage and current transformers are capable of generating hazardous voltages and currents when
their primary circuit is powered.
Follow the standard safety precautions when performing any installation or service (such as making sure that the power supply
is disconnected, disconnecting the fuses of the transformer voltages, short-circuiting the secondary of current transformers
etc.).
Don’t use the instrument when failure may cause injury or death, or generate sufficient energy to cause a fire.
The instrument is equipped with a fuse on the power supply type: 5x20mm 1A 250V time lag.
Connections
EMS-96-ETH with all I/O and COM ports terminal boards. EMS-96 or EMS-96H with all I/O, COM port terminal boards
and profibus port.
ETHERNET PORT
COM PORTS
8-
8+
7-
7+
6-
6+
5-
5+
Do
3-
3+
4-
4+
4+
4-
3+
3-
2+
2-
1+
1-
I/O
N
VL3
VL2
VL1
I3
I2
I1
S2
S1
S1
S2
S2
S1
S2
S1
1-
1+
2-
2+
2
1
Do Do
C
8-
8+
7-
7+
6-
6+
5-
5+
Do
3-
3+
4-
4+
4+
4-
3+
3-
2+
2-
1+
1-
I/O
N
VL3
VL2
VL1
I3
I2
I1
S2
S1
S1
S2
S2
S1
S2
S1
1-
1+
2-
2+
2
1
Do Do

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 6 / 48
Auxiliary power supply
The instrument can be supplied with a voltage independent by the monitoring line. In this case, the instrument
continues to operate independently by the voltage present on the lines under control.
Alternatively, only for 90÷250Vca/cc version, it is possible to take the power from the network under test, using
the phase and neutral for a 4-wire network, phase to phase in a 3-wire system without neutral or from a VT in a
MT application. In this case when the voltage of the monitored line falls below the minimum limit, the instrument turns off.
The instrument can be supplied in two different configurations of power supply:
Standard Version
90÷250 Vac/dc
Option Version
20÷60 Vac/dc
Voltage Inputs
4 terminals are available for direct connection to 3 phase network with neutral. In case of a 3 phase balanced
system without neutral, or non distributed neutral to leave terminal N free.
3 inputs, range 30 ÷ 400Vac phase to neutral - 52 to 693Vac phase to phase (see Technical Features table for
details); over these values must used the external voltage transformers.
Frequency range: 50/60Hz.
Permanent overvoltage allowed: 480Vac phase to neutral - 830VAC phase-phase.
Overvoltage category: II (permanent installations).
Pollution degree: 2 (normally non-conductive, conductive condensation temporary).
Input resistance: > 1.8MΩ.
Load (Burden) for each voltage input: 0.09VA.
Note: To detect the frequency of the network the terminal VL1 must be always connected.
Current Inputs
Current measurements can be performed by connecting the terminals of Current inputs.
All current inputs are isolated by current transformers with different ranges depending on the model of the
instrument.
They can be interfaced directly to the line to be monitored or to be connected to the output of external CT
with higher range.
The connections to the lines to be monitored are described in chapter “Wiring diagrams”.
With neutral current input option installed, the instrument allows the direct measurement of neutral current in
the same way described for the line inputs.
NOTE: it is essential to observe the correct phase sequence, not invert the connections between the phases of
the current inputs and voltage (i.e. the CT placed on L1 phase must absolutely match at I1 Current and VL1 voltage). Do not
invert the terminals S1 and S2 of the CT because the measurement of power factors, and the powers would no longer be
trusted.
Version 5A
Three-phase current inputs isolated by 3 internal current
transformers.
Nominal current range 50mA÷5A; over these values must
be used the external current transformers.
Load (Burden) for each current input: 0.0009VAmax.
Version 1A
Three-phase current inputs isolated by 3 internal current
transformers.
Nominal current range 10mA÷1A; over these values must
be used the external current transformers.
Load (Burden) for each current input: 0.0009VAmax.
Version TTA50
Three-phase current inputs isolated by 3 external current
transformer (openable).
Nominal current range 500mA÷50A.
Version TTA100
Three-phase current inputs isolated by 3 external current
transformer (openable).
Nominal current range 1A÷100A.
Neutral Current: the nominal current range depends by the version.
1
2
AUX
S2
S1
S2
S1
S2
S1
S2
S1
In
I3
I1
I2
N
VL3
VL2
VL1

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 7 / 48
In case of connection in a 3 phase network (without
neutral or with neutral not distributed) don’t connect the
N terminal.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
This connection with only 2 CT allows to measure
accurately the three-phase currents.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
This connection can be used with distributed and equal
loads.
It is possible to measure the current on one phase (using
only one CT). The unmonitored phase currents are
mathematically calculated.
The measurement of neutral current is optional.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
In presence of multiple balanced loads in a three-phase
network, the instrument calculates the electrical
parameters checking a single phase current for each load,
allowing to limit the number of CT used.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
Three-Phase, balanced loads, 4-Wires Configuration
Three-Phase, balanced multiple loads, 4-Wires Configuration
Three-Phase, 4-Wires Y Configuration
Three-Phase, 3-Wires Configuration. ARON insertion (2CT)
LOAD
N
L1
L2
L3
EMS
P2
S2
P1
S1
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
P1
S1
P1
S1
P1
S1
LOAD L1
L2
L3
EMS
P2
S2
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
P1
S1
P1
S1
N
L1
L2
L3
LOAD
EMS
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
P2
S2
P1
S1
N
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
LOAD
LOAD
LOAD
EMS
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
P2
S2
P1
S1
P2
S2
P1
S1
P2
S2
P1
S1

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 8 / 48
It is mandatory to connect the current input I1 and
voltage input VL1.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
The electrical parameters are measured for individual
loads.
For correct calculation of power and energy, is mandatory
to connect the voltage inputs related to the used current
inputs.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
If necessary to apply a multiplier factor “K” to adapt the
measure read, please consider that only one K for
voltages and only one K for currents can be set.
WARNING: If the instrument has the TTA on the current
inputs, DON’T connect the S2 terminals to the earth.
Single-Phase, 3 loads in 3 different networks, 6-Wires Configuration
Two-Phase, 3-Wires Configuration
Single-Phase, 2-Wires Configuration
Single-Phase, multiple loads in the same network, 2-Wires Configuration
LOAD
N
L1
EMS
P2
S2
P1
S1
S1 S1
S2 S2 S2
S1
N
VL3
VL2
VL1
In I3
I2
S1
S2
I1
LOAD
N
L1
LOAD
N
L1
LOAD
N
L1
EMS
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
P2
S2
P1
S1
P2
S2
P1
S1
P2
S2
P1
S1
LOAD
EMS
N1
L1
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
LOAD
N2
L2
LOAD
N3
L3
P2
S2
P1
S1
P2
S2
P1
S1
P2
S2
P1
S1
LOAD N
L1
L2
EMS
P2
S2
P1
S1
S1 S1
S2 S2 S2
S1
N
VL3 VL2
VL1
In I3
I2
S1
S2
I1
P2
S2
P1
S1

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 9 / 48
Digital Outputs
2 pulse / state digital outputs are available on the device. In option it is possible to have others pulse / state
digital outputs or simply others state digital outputs.
The technical features are:
-Compliance with CEI EN62053-31 (Class A devices)
-Maximum of digital output available: 8
-Isolation level: 4KVRMS for 60 sec.
-Output type: Photo-MOS (solid state); a “non-closed Output” is comparable to an open contact
-Output voltage/current: 10÷300VDC 150mAmax; 12÷250VAC 150mAmax
-RON = 8Ωtyp. (12ΩMAX)
-“Pulse” output mode:
-TON_min 30ms; TOFF_min 30ms
-Pulse output period adjustable from 60ms to 1000ms
-Pulse polarity programmable (active closed or active open)
-Programmable pulse “weight”.
Output protections: varistor for transients; current limiting to be provided externally.
The PhotoMOS have a behaviour identical to a mechanical contact which closes. Therefore, there are not problems with the
polarity.
Digital Inputs (option)
The EMS can be equipped with isolated Digital Inputs.
The Digital Inputs are available only with the relative option.
The technical feature are:
-Number of Digital Input: 2 or 4 depending on the option version
-Input Configuration: independent inputs (no common pins)
-Isolation level 3.5KVRMS for 60 sec
-Voltage Input Range: 24, 48, 115, 230Vac/dc (only one of the available options to choose in the order)
-Nominal Input Current: max 5mA each @ all nominal voltages
-Input Filter: Digital
-Basic Operation Mode: pulse counter, status, change of time-band
-TON_min 30ms; TOFF_min 30ms;
The Voltage input must be defined before to order the instrument.
The AC/DC digital input are independent (no common pin) and can be wired without polarity care.
Analog outputs (option)
The instrument can be equipped with analog outputs. The options available allow to have 2 or 4 analog outputs matched or not
with 2 digital outputs. Each output can operate independently of others in voltage or current. The technical features are:
-Isolation level: 3.5KVRMS for 60 sec
-Lenght of connection: up to 1200m
-Resolution: 12 bit (4096 values)
-Range*: 0÷20mA or 4÷20mA 0÷10V or -10÷10V or 0÷5V or -5÷5V
-Load*: Max: 600ΩMin: 1KΩ
-Settling time*:
50µs (0÷20mA) @RLOAD=1K ,
CLOAD=200pF, LLOAD=1mH
50µs (-10 ÷10V) @RLOAD=1K ,
CLOAD=200pF
-Error*: Max 0.5 on E.S. Max 0.3 on E.S.
Typical 0.2 on E.S. Typical 0.1 on E.S.
-Linearity:0.01 on E.S.
-Thermal stability: 0.01 on E.S.
* The values indicated in the left column are referred to the current analog output; in the right column to the voltage analog output.
The analog outputs are polarized.
Do1-
Do1+
Do2-
Do2+

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 10 / 48
I/O options
It’s possible to add 7 optional configurations of I/O at the standard configuration:
a) 4 digital inputs and 2 digital outputs
b) 6 digital outputs
c) 2 digital inputs, 4 digital outputs
d) 2 analog outputs
e) 2 analog outputs and 2 digital outputs
f) 4 analog outputs
g) 4 analog outputs and 2 digital outputs
4 digital inputs and 2 digital outputs (option)
With this option the instrument will be equipped with:
- 4 digital inputs
- 4 pulse / state digital outputs.
6 digital outputs (option)
With this option the instrument will be equipped with 8
digital outputs divided in the following way:
- 4 digital outputs
- 4 pulse / state digital outputs.
2 digital inputs, 4 digital outputs (option)
With this option the instrument will be equipped with:
- 2 digital inputs
- 2 digital outputs
- 4 pulse / state digital outputs.
Di1-
Di1+
Di2-
Di2+
Do6-
Do6+
Do5-
Do5+
Do3-
Do3+
Do4-
Do4+
Do1-
Do1+
Do2-
Do2+
Di1-
Di1+
Di2-
Di2+
Di3-
Di3+
Di4-
Di4+
Do3-
Do3+
Do4-
Do4+
Do1-
Do1+
Do2-
Do2+
Do8-
Do8+
Do7-
Do7+
Do6-
Do6+
Do5-
Do5+
Do3-
Do3+
Do4-
Do4+
Do1-
Do1+
Do2-
Do2+

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 11 / 48
2 analog outputs (option)
With this option the instrument will be equipped with:
- 2 pulse / state digital outputs
- 2 analog outputs.
2 analog outputs, 2 digital outputs (option)
With this option the instrument will be equipped with:
-4 pulse / state digital outputs
-2 analog outputs.
4 analog outputs (option)
With this option the instrument will be equipped with:
- 2 pulse / state digital outputs
- 4 analog outputs.
4 analog outputs, 2 digital outputs (option)
With this option the instrument will be equipped with:
-4 pulse / state digital outputs
-4 analog outputs.
Ao1-
Ao1+
Ao2-
Ao2+
Do1-
Do1+
Do2-
Do2+
Ao1-
Ao1+
Ao2-
Ao2+
Do3-
Do3+
Do4-
Do4+
Do1-
Do1+
Do2-
Do2+
Ao1-
Ao1+
Ao2-
Ao2+
Ao3-
Ao3+
Ao4-
Ao4+
Do1-
Do1+
Do2-
Do2+
Ao1-
Ao1+
Ao2-
Ao2+
Ao3-
Ao3+
Ao4-
Ao4+
Do3-
Do3+
Do4-
Do4+
Do1-
Do1+
Do2-
Do2+
Digital Inputs/Outputs
Ao1- Ao2- Ao3-
Ao4+
Ao1+ Ao2+
Ao3+
Ao4-
Voltage analog outputs
EMS
Di1- Di2-
Do2-
Do1+
Di1+ Di2+
Do2+
Do1-
24, 48,
115, 230 Vaa/dc
depending by the version
fuse
V
fuse
150mA max 150mA max
12÷230
Vac/dc
12÷230
Vac/dc
V VV
EMS
Vout
Load
Vout
Min 1K Min 1K
Current analog outputs
Iout Iout
Max 600 Max 600
Analog Outputs
LoadLoadLoadLoad
Load

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 12 / 48
Serial ports (option)
Depending on the version, the instrument can be equipped with one or two isolated half duplex RS485 serial
interface.
Two options are available:
1 serial port RS485 2 serial ports RS485
With these options the instrument can communicate with the external with the Modbus protocol. The two
ports are independent and they can perform the same operations. The presence of the serial port RS485
allows the software update.
COM1
A1: +data
B1: -data
C1: common
COM2
A2: +data
B2: -data
C2: common
The instrument communicates via a asynchronous isolated serial interface in the standard RS485 Half-
duplex that allows a connection in a network up to 247 nodes. This allows to implement a
communication network between different instruments and a master unit (data concentrator) for a
detailed control of an electrical installation.
The maximum length of the line depends on variables such as the transmission rate and characteristics
of the cables used. It’s recommend to use a shielded twisted pair cable with low attenuation, with a
minimum section of 0.36mm2(22AWG) and capacity of less than 60pF / m.
The maximum length is about 1200m. For longer distances it’s need to use signal amplifiers (repeaters).
High networking length and/or where environments are electrically "noisy", it requires the use of two
termination resistors (at the beginning and end of the line) of 100-120Ω. The use of repeaters is also
necessary in the case of networks with more than 32 nodes.
At each repeater can be connected 32 units.
Please note that complex networks with large number of nodes cause a slower speed of response by
the instruments.
Connection type: half-duplex (2 wires + common).
Isolation: opto-couples (3750 Vrms min.).
In the figure is showed a connection with a not shielded cable. In the shielded cable connection it’s necessary to connect the
shield to COM terminal.
Profibus port (option)
Profibus-DP is a multi-master systems. In the networks it’s possible to have up to 126 devices on the same bus. In
profibus-DP networks, the interchange of data between peripheral modules and the master is made automatically
by the profibus controller, which ‘virtualise’ the data exchange memory of the DP devices in the memory of the
master. In the following picture the pin-out of the Profibus-DP port:
The profibus interface detects automatically the baud rate of the network; the baud rate available are:
9.6 Kbit/s
19.2 Kbit/s
45.45 Kbit/s
93.75 Kbit/s
187.5 Kbit/s
500 Kbit/s
1.5 Mbit/s
3 Mbit/s
It’s possible to request to the manufacturer application examples, GSD files and protocol manual (IM157).
The 3 yellow led on the back have the following meanings:
-instrument not parameterized: the 3 led turn on continuously in the sequence PAR - ExB - ExA
-instrument parameterized: led PAR turned on
-instrument parameterized and in communication: led PAR on, led ExA and ExB turn on independently
Service: port used by the manufacturer only.
1
Not connected
4
RTS
7
Not connected
2
Not connected
5
Gnd
8
RxD/TxD-N (A)
3
RxD/TxD-P (B)
6
Power Supply (+5V)
9
Not connected
A2
B2
C2
A1
B1
C1
COM2-RS485COM1-RS485
EMS
C1 A1+ A2+ B1- C2 B2-
Master
o
Concentrator
o
Other instrument
COMA+ B-
1
5
6
9

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 13 / 48
Ethernet port (option)
The Ethernet port (RJ45 connector) of EMS96 incorporates 4 LED (2
status LED and 2 Ethernet status LED).
The green LED of Ethernet status, Link/Data, is turned on when the
Ethernet cable is plugged into the device. The LED blinks whenever an
Ethernet pack is received. The yellow LED of the Ethernet status,
100BaseT, is turned on when the device links with the hub at 100Mb.
The LED is off when the link is established at 10Mb.
The status LED indicates the communication in transmission TX (green LED) and the communication in receiving RX (red LED).
The SERVICE button has the function to restore the factory parameters following this steps: turn off the instrument, turn on the
instrument, wait for end of blinking green LED, press and hold the button for at least 10 seconds, turn off and turn on the
instrument.
The options available with the Ethernet port are:
a) Ethernet port with Modbus TCP/IP protocol
b) Ethernet port and Wifi with Modbus TCP/IP protocol
c) Ethernet port with Modbus TCP/IP protocol and Web server built
d) Ethernet port with Modbus TCP/IP protocol, Web server and an additional RS485 serial port used as Modbus RTU-TCP/IP
converter
e) Ethernet port and Wifi with Modbus TCP/IP protocol, Web server and an additional RS485 serial port used as Modbus RTU-
TCP/IP converter.
MBUS (option)
The wiring is performed using two conductors (MBUS1 and MBUS2 connected to A2 and B2) that are used for
the data transmission and power supply of the MBUS communication module. The connection is
independent of the polarity.
Green Led
Red Led
Status
Led Ethernet
status
led
Green Led
Yellow Led
A2
B2
C2
A1
B1
C1
MBUSCOM1-RS485

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 14 / 48
Function keys
Directional keys (Up/Down/Left/Right)
The directional keys are used to change the pages in Measures, Graphics, Info Device e Setup. In the next chapters the maps
show how to move between pages. At the same time the directional keys allow to move and select items inside the Menu.
The Up and Down keys are used to increases and decrease or simply to change the set values
in the Setup pages.
Pressing at the same time the Up and the Down keys to return from the actual to default
page.
Pressing at the same time the Left and the Right keys it’s possible to define the default page.
The title page will change the colour and the “home icon” will appear near the text to confirm
the new default.
Enter key
When the Enter key is pressed in Measures, Graphics, Info Device and Setup pages it allows to enter in the
Menu and it is used to confirm the item selected. In the Setup it allows to modify and to confirm the new
value. In the Measures and Graphics pages, when the key is released after a long press (more than 4
seconds) the map of the pages is showed on the display; in the User Pages, instead, it allows to escape by
opening the menu.
Esc key
This key is used:
-to skip without to confirm the modify
-when a page of Measures, Graphics, Info Device and Setup is displayed, pressing Esc the display will show
all levels path to reach the last page opened by using the menu from the turning on of the instrument.
Frontal led
On the frontal panel there are two led that blink proportionally to the energy read.
For default the right red led shows the “System Active Energy IN” and the left red led shows the “System Reactive Energy IN”. In
the setup is possible to modify the default set with the following parameters:
-System Active Energy IN
-System Active Energy OUT
-System Reactive Energy IN
-System Reactive Energy OUT
-System Apparent Energy
The weight of the pulses of these led is 0.1 Wh, VArh, VAh for each pulse. This value is not modifiable.
First configuration
At the first switch on and after every Global Reset the instrument allows to set the main parameters for a correct used:
1) Language selection
2) Wiring (see Connections paragraph and Wiring/Conventions table)
3) CT ratio (see Transform Ratio table)
4) CT-N ratio (only if the neutral CT is mounted on the instrument, see Transform Ratio table)
5) VT ratio (see Transform Ratio table)
6) Hour
7) Minutes
8) Seconds
9) Day of week
10) Day
11) Month
12) Year
Home MenuEsc DefaultHome MenuEsc Default

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 15 / 48
Maps
Menu
: this item is selectable only with the presence of
relative option.
: this item is selectable only if the relative COM is set
as Master mode.
The number of instruments displayable (from 1 to 20)
depends on the setting of the "Slaves to read".
***: this item is selectable only if COM1 or COM2 is
present and in Master mode.
To move inside the menu it’s necessary to use the
directional keys.
The arrow near the items indicates the presence of
submenu (with right or enter key it’s possible to enter).
Pressing Enter key to go to show the page or the item
selected.
The cursor position is showed with different color text.
Absolute Min
Absolute Max
-------------------
COM1
Slave 1
...........
Slave 20
COM2
Slave 1
...........
Slave 20
Information
(Password)
Menu
User pages
Math
SAG
Slaves read***
Insulation
Temperature
Analog Inputs
Relat. min/max
COM1
COM2
-------------------
Measures
Graphics
Setup
Measures
Instantaneous
Relative
min/max
Absolute Min
Absolute Max
Counters
Average
Max Demand
Energies
Expected Power
Information
Energies
Powers
Load Bars
Currents trend
Voltages trend
Harmonics
Phasor diagram
Graphics
Power Factor
Cos
Tan
Power
Frequency
THDs
Currents
Voltages
Instantaneous
Currents
Power Factor
Cos
Powers
Frequency
THDs
Voltages
Harmonics
Phase angles
Max Demand
Average
Power Factor
Cos
Tan
Power
Frequency
Currents
Voltages
Energies
Active IN
Reactive IN
Reactive OUT
Apparent
Active OUT
Power
Active
Reactive
Apparent
Phase-Neutral
Phase-Phase
Voltages
THDs
Voltage
Current
Powers
Active
Reactive
Apparent
Phase-Neutral
Phase-Phase
Voltages
THDs
Voltage
Current
Harmonics
Voltage
Current
Power
Active
Reactive
Apparent
Setup
Slaves read
Energies
Daily
Weekly
Monthly
Yearly

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 16 / 48
: this item is selectable only with the
presence of relative option.
* options:
- No COM1
- COM1 RS485
** options:
-No COM2
-COM2 RS485
-Profibus
-Ethernet
-Ethernet wifi
-MBUS
The item Service is underlined because
it is available only for the constructor.
-------------------
Information
Menu
User pages
(Password)
-------------------
Log
Math
Service
Setpoint
I/O
General
User pages
Communication
Information
Setpoint
COM Monitor
Digital I/O
Password
Reset
Display
General
Editing contacts
SAG
Type
Energies
Counters
Mode
Period plan
Holiday
Daily plan
Preset Energies
COM1 RS485
No COM1
I/O
DPO
I/O
DO 1, 2, 3, 4
DI 1, 2, 3, 4
AO 1, 2, 3, 4
AI 1, 2
DO 5, 6, 7, 8
COM1*
COM2**
Log
COM1 RS485
No COM2
COM2 RS485
Profibus
Ethernet
Ethernet Wifi
MBUS
MBUS
COM2 RS485
Readout data
Setpoint
Summary
Details
Parameters
Texts
Setpoint
Measures
Setup
Measure
Measure
User pages
Composition
Setting
Setting
Slave typology
Slave name
Setting
Slave typology
Slave name
Measures
Graphics
Setup
Generic
Smart
Trigger
Timed
Time window
Trasform Ratio
Frequency
Wiring
Energies
Counters
Graphics
Utility
Titles
Keys texts
Date/Time
Device
Date / Time
Log summary
Log Details
On/Off Events
Contacts
Communication
Log summary
Setpoint
Generic
Log Details
Smart
Trigger
Timed

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 17 / 48
Measures
The default page showed at the power on is “Phase Voltage”. It’s possible to change it using the keys (left and right pressed at
the same time).
Max Demand
Min/Max Relative
Phase-Phase
Min/Max Relative
Currents
Min/Max Relative
Cos
Min/Max Relative
Power Factor
Min/Max Relative
Tan
Min/Max Relative
Active Power
Min/Max Relative
Reactive Power
Min/Max Relative
Apparent Power
Min/Max Relative
Frequency
Min/Max Relative
THD Voltages
Min/Max Relative
THD Currents
Min/Max Relative
Voltages
Min/Max relative
HARMONICS
SAG (1-5) SAG (6-10)
Instantaneous
Phase-Phase
Voltages
Min Absolute
Phase-Phase
Max Absolute
Phase-Phase
Currents Min Absolute
Currents
Max Absolute
Currents Average Currents Max Demand Currents
Cos Min Absolute
Cos
Max Absolute
Cos
Average
Cos
Max Demand
Cos
Power Factor Min Absolute
Power Factor
Max Absolute
Power Factor
Average
Power Factor
Max Demand
Power Factor
Tangent Min Absolute
Tan
Max Absolute
Tangent
Average
Tan
Max Demand
Tan
Active Power Min Absolute
Active Power
Max Absolute
Active Power
Average
Active Power
Max Demand
Active Power
Reactive Power Min Absolute
Reactive Power
Max Absolute
Reactive Power
Average
Reactive Power
Max Demand
Reactive Power
Apparent Power Min Absolute
Apparent Power
Max Absolute
Apparent Power
Average
Apparent Power
Max Demand
PowerApparent
Frequency Min Absolute
Frequency
Max Absolute
Frequency
Average
Frequency
Max Demand
Frequency
THD Voltages Min Absolute
THD Voltages
Max Absolute
THD Voltages
THD Currents Min Absolute
THD Currents
Max Absolute
THD Currents
Voltages Min Absolute
Voltages
Max
Voltages
Absolute Average Voltages
Absolute Maximum
Max Demand
Voltages
Absolute Minimum Average
Voltage Harmonics
(1-5)
Voltage Harmonics
(6-10)
Voltage Harmonics
(11-15)
Voltage Harmonics
(16-20)
Current Harmonics
(1-5)
Current Ha rmonics
(6-10)
Current Ha rmonics
(11-15)
Current Harmonics
(16-20)
Active Power
Ma x Demand

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 18 / 48
: this item is selectable only with
the presence of relative option.
Slaves read
: this item is selectable only if the relative
COM is present and in Master mode.
The number of Slaves displayable (from 1 to 20) depends from the set of “Slaves to read”.
SAG (1-5)
Phase Voltage
Total Counters
Expected Power
Total Active
Energy IN Timeband 1 Timeband 2 Timeband 16
Total Active
Energy OUT Timeband 1 Timeband 2 Timeband 16
Timeband 1 Timeband 2 Timeband 16
Timeband 1 Timeband 2 Timeband 16
Timeband 1 Timeband 2 Timeband 16
Total Reactive
Energy IN
Total Reactive
Energy OUT
Total Apparent
Energy
ENERGIES
Timeband 1 Timeband 2 Timeband 16
Active Power
Max Demand Timeband 1 Timeband 2 Timeband 16
Reactive Power
Max Demand Timeband 1 Timeband 2 Timeband 16
MAX DEMAND
Phase Angles
Slave 1 Slave 3
Slave 2
..........
Slave 4
Slave 17
..........
Slave 19
Slave 18 Slave 20

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 19 / 48
Graphics
Currents Trend
Load Bars
Voltages Trend
Monday Power Sunday Power
Voltages Trends
Daily Energy
(Active-Reactive)
Voltage
Harmonics L1
Voltage
Harmonics L2
Current
Harmonics L1
Voltage
Harmonics L3
Current
Harmonics L2
Jan Energy
(Active-Reactive)
Jan Energy
(Active-Reactive
(Table) (1-16)
Jan Energy
(Active-Reactive)
(Table) (17-31)
Dec Energy
(Active-Reactive)
Dec Energy
(Active-Reactive)
(Table) (1-16)
Dec Energy
(Active-Reactive)
(Table) (17-31)
Energy
Year YYYY
Energy
Year YYYY-1
Energy
Year YYYY-3
Energy
Year YYYY-2
Energy
Year YYYY-4
Energy
Year YYYY-5
Weekly Energy
(Active-Reactive)
Phasor
diagram
Current
Harmonics L3

EMS-96 Instruction Manual IM1200-U v1.6 Pag. 20 / 48
User Pages
6 user pages are available to be displayed, selecting the item User Pages in the Menu.
In Setup User pages Titles it is possible to set the name of
the page to display.
In Setup User pages Composition it is possible to select up
to 6 measure to display.
In Setup User pages Keys texts it is possible to modify the
4 chars that indicate what is showed in the relative page.
The keys lose the meaning given in the frontal side and they are
used to move from one user page to another. Each key is
associated to one page. At the bottom of the display there are
the indications of the content of each page. The indication of the user page displayed has a different color from the others.
When the Enter key is released after a long press (more than 4 seconds) the instrument escape from the user page mode.
EMS-96
Home MenuEsc Default
E LECTRICAL M EASUREMENT S UPERVISOR
L-N L-L A P.F. W Vr A
CORRENTI
A
A1
A2
A
A
A
A