LEGRAND 4 149 40 Instruction Manual

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87045 LIMOGES Cedex
Telephone : [phone] –Fax: [phone]
EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
Contents Pages
1. Description - Use ............................................. 1
2. Range............................................................... 1
3. Overall dimensions .......................................... 1
4. Preparation - Connection ................................. 1
5. General characteristics .................................... 3
6. System architectures ....................................... 6
6.1 Stand Alone........................................................ 6
6.1.1 with local addressing ..................................... 6
6.1.2 with remote addressing ................................. 7
6.2 Supervised ......................................................... 8
6.2.1 with local addressing ..................................... 8
6.2.2 with remote addressing ............................... 10
7. Compliance and approvals ............................ 12
1. DESCRIPTION - USE
. Module dedicated to Energy Management System (EMS CX3) use.
. It performs conversion from the EMS CX3bus to Modbus RS485
protocol.
Symbol:
2. RANGE
. Cat. n° 4 149 40: EMS CX3/Modbus RS485 Interface
Width:
. 1 module. 17,8 mm width.
3. OVERALL DIMENSIONS
4. PREPARATION -CONNECTION
Fixing:
. On symmetric rail EN/IEC 60715 or DIN 35 rail
Operating positions:
. Vertical, Horizontal, Upside down, On the side
Power Supply:
. Mandatory in 12 V d.c. via the specific Power supply module Cat
n°4 149 45
. Two ways:
via specific communication patch cords (cat. nos 4 149 07/08/09) to
connect at the downstream through dedicated ports
via specific communication rails (cat. nos 4 149 01/02/03) to
connect at the rear through dedicated connectors.
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
4. PREPARATION –CONNECTION (continued)
Recommended tools:
. For fixing: flat screwdriver 5.5 mm (6 mm maximum).
Data connection (EMS CX3modules inter-connection):
.Via specific communication patch cords (cat. nos 4 149 07/08/09)
Allow data transmission between the different EMS CX3modules.
This type of connection is recommended when there are few EMS
CX3modules, distributed all over the enclosure.
Implementing: with this configuration, the plastic protection cover of
the backside communication ports on the EMS CX3module must be
keep on.
4. PREPARATION –CONNECTION (continued)
Data connection (EMS CX3modules inter-connection)
(continued) :
. Via specific communication rails (cat. nos 4 149 01/02/03).
. Allow data transmission between the different EMS CX3modules.
This type of connection is recommended when there are several
EMS CX3modules on the same DIN row.
Implementing: with this configuration, the plastic protection cover of
the backside communication ports on the EMS CX3module must be
removed.
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
4. PREPARATION –CONNECTION (continued)
Data connection (EMS CX3modules inter-connection)
(continued) :
. Via a mix between specific communication patch cords and
communication rails in order to create a link between several rows
Two situations:
-Individually connected with communication rails.
The communication patch cord allows to connect two rows.
-Individually connected with communication patch cords &
communication rail.
The communication patch cords allow to connect EMS CX3
module on a row and to connect two rows.
Front USB port:
. Allows, if needed (e.g for configuration), to connect the EMS CX3
Modbus/EMS Interface to a computer via a mini USB/USB
commercial cable.
. Via the Legrand - EMS configurator software (download for free) is
possible to:
- test an EMS installation
- configure the modules characteristics if the lateral DIP Switches
remain on 0000 position
- make the remote and extended addressing procedure (see §6.2.2)
5. GENERAL CHARACTERISTICS
Front face marking:
. By permanent ink pad printing (red line) and laser marking
Lateral side marking:
. By laser.
left side: Standard and programming information
right side: cabling and traceability information
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016
Standards
Indicates the presence
of the addressing track-
wheel
Legrand address
Frame transmission LED
Frame reception LED
Communication Error LED
RS485 Modbus
Cabling information
Traceability information
Data connection
with communication
rail
Data connection
with communication
patch cords
Termination resistance
information
Label: to be removed from the
module and kept if necessary
(module ID info ...)

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
5. GENERAL CHARACTERISTICS (continued)
Lateral side marking:
. Upper face.
Signalling LEDs:
. Interface is equipped with 3 signalling LEDs:
-“ER”: Communication error led it blinks red if there is an error
on the communicating bus
-“TX” and “RX”: frame transmission and reception signalling led
they blink yellow when there is communication activity on the
bus
Multi-Functions button:
. Front face button as several functions:
5. GENERAL CHARACTERISTICS (continued)
Multi-Functions button (continued) :
. Gives information about the operating state on the module
Possible states:
Led color
State
Meaning
red
Slow blinking
Error (e.g. addressing error)
Fast blinking
No function
Steady (without
pressing the
multifunction button)
System alarm detected (see
Note*)
Steady
(pressing the multi
function button
longer than 20 sec.)
Total reset
[any firmware updates are
preserved]
green
Slow blinking
System process is running.
Wait until the Led turns steady
Fast blinking
(pressing the multi
function button for
10 sec. )
put in “Stand-by” the EMS CX3
module (no remote action and
communication available)
Steady
System OK, connection is
running
orange
Slow blinking
No function
P&L info (refer to next paragraph)
Fast blinking
Device’s firmware update in
progress
Steady
No function
* Note
. Possible system alarms detected by the Modbus/EMS Interface:
loss of communication with an EMS module
error in addressing procedure: possible mix between local and
remote address (see § 6)
duplicate function error: two EMS modules with the same function
have the same address.
. To turn off the system alarm:
solve the problem according to the indication of the alarm
push the Multifunction button on the Interface the led become
steady green
Insulation voltage:
. Ui = 400 V
Pollution degree:
. 2 according to IEC/EN 60898-1.
Overvoltage category :
. III
Dielectric strength:
. 2500 V
Plastic material:
. Self-extinguishing polycarbonate.
. Heat and fire resistant according to IEC/EN 60695-2-12, glow-wire
test at 960°C.
. Classification UL 94 / IECEN 60695-11-10: V1
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016
Marking indicating that the address of
the Interface is the tenth of the Modbus
address
Switch to insert the 120Ω termination
resistance (see §6.2.2 “RS485 Wiring
diagram”)

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
5. GENERAL CHARACTERISTICS (continued)
Ambient operating temperature:
. Min. = -25°C. Max. = +70°C
Ambient storage temperature:
. Min. = -40°C. Max. = +70°C
Protection Index:
. Protection index of terminals against direct contacts:
IP2X (IEC/EN 60529).
. Protection index of terminals against solid and liquid bodies (wired
device): IP 20 (IEC/EN 60529).
. Protection index of the front face against solid and liquid bodies: IP
40 (IEC/EN 60529).
. Class II, front panel with faceplate.
Average weight per device:
.0,050 kg.
Volume when packed:
. 0,21 dm3.
Consumption:
. Values at 12 Vd.c.
Configuration
W
mA
Stand-by
0,316
26,3
Communication
0,344
28,7
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
6. SYSTEM ARCHITECTURES
The EMS CX3is a polyvalent system and, according to the needs of the customer, can be set up and/or used as “Stand-alone” or “Supervised”
system. Based on this choice the configuration and addressing methods are different.
Four possible architectures are provided:
6.1 Stand alone system
6.1.1 with local addressing (through the track wheel)
6.1.2 with remote addressing (through a computer)
6.2 Supervised (Computer Supervisory System)
6.2.1 with local addressing
6.2.2 with remote addressing
6.1 Stand-alone system
. Stand alone = autonomous system. To be used by the end-user if it is not necessary to have a computer for the supervision outside the
envelope. Everything can be manage on site.
6.1.1 Stand-alone system with local addressing (through the track wheel)
Local addressing advantages:
-No configuration software needed to set-up the installation
-It is not necessary to use a computer to manage settings (configurations, test, ...) and to use the system (visualize and be alerted,
...). Everything can be done through the Mini configuration module (local display, cat. no 4 149 36/37). [Refer to the technical sheet
dedicated to this module for details] .
-No communication Interfaces or gateways are required.
-Installation can be done without the intervention of a System Integrator
Programming procedure:
. For EMS CX3modules which need some: mandatory through to lateral DIP-switch of each EMS CX3 modules (see § ”Module configuration”)
Addressing procedure:
. For all EMS CX3modules: mandatory through the track wheel located on the top upper face of each EMS CX3 modules
. Marked from 0 to 9 in order to locally define the Modbus address of the EMS CX3 modules
Consequences of the local addressing mode (through the track wheel):
. Each device of the system must be addressed.
. Addresses available: from 1 to 9
. Address 0 not permitted
. It is possible to assign to several devices the same address with the purpose of grouping different functions, because they are related to the
same electrical circuit. For example it is possible to assign the same address to a signalling auxiliary module (cat. no 4 149 29), an universal
control module (cat. no 4 149 32), a measuring module, and so on. In this way on the EMS CX3mini configuration module (local display) the
grouped function will be displayed as a unique “device” with all grouped functions. [Refer to the schemes hereunder]
Note for the mini configuration module (local display)
. It is possible to assign it the same address as another EMS CX3through the programming menu of the device
. The mini configuration module can be placed everywhere in the EMS CX3bus
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
6. SYSTEM ARCHITECTURES
6.1 Stand-alone system (continued)
6.1.2 Stand-alone system with remote addressing (through a computer)
Remote addressing advantages:
-Whole configuration (addresses and functions) can be set up through the EMS Configuration software
-Configuration software available for free
-Automatic detection of the EMS CX3modules installed in the system (characteristics, functions, configuration...)
-Increased settings possibilities: load shedding function
-Increased addressing: up to 30 Modbus addresses in a system
Programming procedure:
. For EMS CX3modules which need some: possible through the lateral DIP-switch of each EMS CX3 modules (see § “Module configuration”).
Addressing procedure:
. It is not necessary to address the EMS CX3modules. The track wheel must be left in default position “0”.
. All the addressing/configuring procedure will be done with the Configuration Software (available online for free)
. With remote addressing, the software does the automatic detection of modules installed in the system but the supervision is not possible until
the user assign the remote address and all the characteristics to each module.
Note: it is mandatory to connect the computer to the mini configuration module with an USB-micro USB cable. [For more details, refer to User
Manual Document]
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
6. SYSTEM ARCHITECTURES
6.1 Stand-alone system (continued) :
6.1.2 Stand-alone system with remote addressing (through a computer) (continued) :
Consequences for the system architecture:
-for 1 mini configuration module (cat. no 4 149 36/67)
oup to 30 EMS CX3modules (eg. 30 devices grouped per functions with addresses from1 to 30)
It is possible to assign to several devices the same address with the purpose of grouping different functions, because they are related to the
same electrical circuit. For example it is possible to assign the same address to a signalling auxiliary module (cat. no 4 149 29), an universal
control module (cat. no 4 149 32), a measuring module, and so on. In this way on the EMS CX3display or in a supervision system the grouped
function will be displayed as a unique “device” with all grouped functions. [Refer to the schemes here under]
Note for the mini configuration module (local display)
. It is possible to assign it the same address as another EMS CX3
. The mini configuration module can be placed everywhere in the EMS CX3bus
6.2 Supervised system (Computer Supervisory System)
. Supervised system = System to be used through a Computer Supervisory System to remotely read data from the EMS CX3devices and/or do
operations on these devices (e.g. commands of a motor driven or contactor ...).
6.2.1 Supervised system with local addressing (through the track wheel)
Local addressing advantages:
-No configuration software needed to set-up the installation
-Installation can be done without the intervention of a System Integrator
Programming procedure:
. For EMS CX3modules which need some: mandatory through to lateral DIP-switch of each EMS CX3 modules (see § “Module configuration”)
Addressing procedure:
. For all EMS CX3modules: mandatory through the track wheel located on the top upper face of each EMS CX3 modules
. Marked from 0 to 9 in order to locally define the Modbus address to EMS CX3 modules
In this system the Modbus address of an EMS CX3module device or group of modules (several functions) is obtained considering the address
of the interface Modbus/EMS CX3Interface as tenth and the address of a device or group of function as unit (e.g. Interface address 1 = 10 
address of module n°5 = Modbus address 15)
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
6. SYSTEM ARCHITECTURES (continued)
6.2 Supervised system (Computer Supervisory System) (continued)
6.2.1 Supervised system with local addressing (through the track wheel) (continued)
Consequences of the local addressing mode (through the track wheel):
. Each device of the system must be addressed.
. Addresses available: from 1 to 9
. Address 0 not permitted
It is possible to assign to several devices the same address with the purpose of grouping different functions, because they are related to the
same electrical circuit. For example it is possible to assign the same address to a signalling auxiliary module (cat. no 4 149 29), an universal
control module (cat. no 4 149 32), a measuring module, and so on. In this way on the EMS CX3display or in a supervision system the grouped
function will be displayed as a unique “device” with all grouped functions. [Refer to the scheme hereunder]
Note: In this configuration the Modbus address of an EMS CX3module device or group of modules (several functions) is obtained considering
the address of the interface Modbus/EMS CX3Interface as tenth and the address of a device or group of function as unit (e.g. Interface address
1 = 10 and device address = 5 Modbus address = 15)
Consequences for the system architecture:
-for 1 IP/Modbus gateway (cat. no 0 046 89):
oup to 81 Modbus address
omandatory limit of max. 9 Modbus/EMS CX3interfaces or max. 1000 m of Modbus cable (cable Belden 9842, Belden 3106A or
equivalent).
-for 1 Modbus/EMS CX3Interface (cat. no 4 149 40):
oup to 30 EMS CX3modules (ex. 30 devices grouped per functions with addresses from1 to 9)
Note: with local addressing, the Modbus/EMS CX3interface, does the automatic detection of modules (characteristics, functions,
configuration...)
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016
Cat. no 0 046 89

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EMS CX3- Modbus/EMS Interface
Cat. N°: 4 149 40
6. SYSTEM ARCHITECTURES (continued)
6.2 Supervised system (Computer Supervisory System) (continued)
6.2.2 Supervised system with remote addressing (through a computer)
Remote addressing advantages:
-Whole of configuration (addresses and functions) can be done a remotely through the EMS Configuration software
-Configuration software available for free
-Automatic detection of the EMS CX3modules installed in the system (characteristics, functions, configuration...)
-Increased settings possibilities: load shedding function
-Increased addressing: up to 32 Modbus/EMS CX3interfaces
-Increased addressing: up to 247 Modbus addresses in a system
Programming procedure:
. For EMS CX3modules which need some : possible through the lateral DIP-switch of each EMS CX3 modules (see § “Module configuration”).
Note: via the configuration software it is possible to assign all the functions and characteristics of each EMS CX3 module
Addressing procedure:
. It is not necessary to address the EMS CX3modules. The track wheel must be left in default position “0”.
. A all the addressing/configuring procedure will be done with the Configuration Software (available online for free)
. With remote addressing, the software does the automatic detection of modules installed in the system but the supervision is not possible until
the user assign the remote address and all the characteristics to each module.
Note: it is mandatory to connect the computer to the different Modbus/EMS CX3interface with an USB-micro USB cable (one interface at a
time). [For more details, refer to the User Manual Document]
Technical data sheet: F02338EN/01
Updated: -
Created: 09/11/2016