MyLight Smart Master G3 User manual

MAI-0005- MG3 Installation manual-V1
Installation manual
Smart Master G3 (MG3)
ENGLISH

MyLight Systems SAS
2 MAI-0005-MG3 Installation manual -V1
Legal
MyLight Systems SAS warranty
You can download the applicable warranty conditions from the website www.mylight-
systems.com.
Registered trademark
All registered trademarks are recognised, including those that are not expressly mentioned. The
absence of a logo does not mean that a product or a brand can be sold unconditionally.
The information in these documents is the exclusive property of MyLight Systems. The publication
of this information, in full or in part, is subject to the prior permission of MyLight Systems. Internal
reproduction for the company for the assessment and correct commissioning of the product is
authorised without prior permission.
Reference documents
-RD1: FTE-0018-Datasheet Smart Master G3-V1
MyLight Systems regularly updates its instructions. Visit the website www.mylight-systems.com to
make sure that you are using the latest version of this document.
You will also find the complete range of devices that are compatible with the Smart Master G3.

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Contents
1Safety of goods and persons ..............................................................................................................5
1.1 Correct use....................................................................................................................................5
1.2 Country certification and authorisation....................................................................................5
1.3 Qualified technicians ...................................................................................................................5
1.4 Product markings.........................................................................................................................5
2Contents of the box..............................................................................................................................6
3Description of the Smart Master G3 ..................................................................................................6
4Installation conditions .........................................................................................................................8
5Internet connectivity options..............................................................................................................9
5.1 Ethernet cable connection ..........................................................................................................9
5.2 PLC plug connection ....................................................................................................................9
5.2.1 Ethernet cable on the Internet router ..............................................................................9
5.2.2 Wi-Fi connection on the Internet router.........................................................................10
5.3 Connection over an existing PLC circuit..................................................................................11
5.4 Connection through a cellular modem ...................................................................................11
5.4.1 Ethernet connection to the cellular modem ..................................................................11
5.4.2 PLC connection on the cellular modem..........................................................................12
6Electrical connections ........................................................................................................................12
6.1 Power supply connection..........................................................................................................12
6.1.1 Single-phase power supply ..............................................................................................12
6.1.2 Three-phase power supply...............................................................................................13
6.2 Relay connection ........................................................................................................................14
6.3 Extension and current transformer connections ..................................................................14
6.3.1 Extension connections ......................................................................................................14
6.3.2 Current transformer connections ...................................................................................15
6.4 Connection of the RS485 accessory ........................................................................................16
6.5 Ethernet connection ..................................................................................................................17
6.6 Example of final connections ...................................................................................................18
7Commissioning ...................................................................................................................................19
7.1 Prerequisites...............................................................................................................................19
7.2 Switching on the Smart Master G3 ..........................................................................................19
7.3 Connection of the Power Line Communication (PLC) ...........................................................19

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7.3.1 Addition of a MyLight Systems PLC device.....................................................................19
7.3.2 Connection of an external PLC device ............................................................................20
7.4 Registration of the system ........................................................................................................20
8Maintenance and cleaning ................................................................................................................20
9De-commissioning..............................................................................................................................21
9.1 Disassembly ................................................................................................................................21
9.2 Recycling......................................................................................................................................21
10 FAQ...................................................................................................................................................21
11 GLOSSARY........................................................................................................................................23

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1Safety of goods and persons
1.1 Correct use
The Smart Master G3 (MG3) is a smart meter for energy monitoring and management solutions. It
must be protected in accordance with the local electrical standards. The system is suitable for
indoors use only. The operating range of all the components must be observed at all times (refer
to RD1). The protection provided by the device may be compromised if it is used in a way that is
not specified in this document.
Carefully follow the instructions for each step of the installation process in all the installation
phases and pay attention to the warnings in each chapter to avoid any dangerous situations for
the operator and risks of damaging the equipment. Any operations that do not follow the
instructions provided immediately cancel the warranty.
The documentation must be read, followed and accessible at all times. The product label must be
left on the product.
1.2 Country certification and authorisation
The product must only be used in approved countries (refer to RD1). Only use this product in
accordance with the documentation provided and the standards and directives in force in the place
of use.
1.3 Qualified technicians
The operations identified in this document must only be performed by qualified personnel. All
persons working on the product must have the following qualifications:
-Training in the installation and commissioning of electrical devices
-Electrical authorisation
-Training in the hazards and risks related to the installation and use of electrical equipment
and systems
-Knowledge of the applicable standards and directives
1.4 Product markings
Symbol
Meaning
Single-phase alternating current
Three-phase alternating current
Caution: refer to the installation manual
WEEE directive 2012/19/EU (Waste Electrical and Electronic Equipment).
Caution: risk of electric shock.
Device fully protected by DOUBLE INSULATION or REINFORCED INSULATION.

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2Contents of the box
A
B
C
D
Article
Quantity
Designation
P/N
A
1
Smart Master G3
MLSH-MG3-14
B
3
100 A current transformer
MLSH-MG3-15
C
1
Quick installation guide
NTI-0001
D
1
3 m unshielded Ethernet cable
MLSH-COM-3
3Description of the Smart Master G3
The Smart Master G3 is a 3-in-1 smart meter that can measure three charges, such as photovoltaic
production, the total consumption of a building or the consumption of an electrical device. The
product is equipped with a built-in relay capable of controlling an electric charge.
The meter has several connectivity options for Internet: by Ethernet RJ45 cable, by PLC plug or by
cellular modem (option). It also has external connections: such as an RS485 port and two Ethernet
ports.
A
C
B
D
E
F
G
H
I

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Position
Designation
A
Single or three-phase power supply
B
Power light:
On green: normal operation
Flashing green: start-up / updates
Flashing green and red every 300 ms: Internet failure
On green for 3s, flashing red for 1 s: no communication with
a PLC device.
Flashing red: request to restart
On red: product out of order
Off: product switched off.
C
Relay connector, button and light
Light:
On green: relay active, closed
Off: relay inactive, open
Button:
Press and release after 1 s: switch the relay between the two
positions
D
RS485 connector and communication light
Light:
Flashing green irregularly: RS485 communication
Off: no RS485 communication
E
Ethernet LAN connector
Light:
On green irregularly: Ethernet connection
Off: No Ethernet connection
F
PLC pairing light and button
Light:
On green: perform PLC pairing with at least one device PLC
paired
Flashing green: awaiting pairing
On green, off, on green: PLC reset in progress
Red: poor PLC communication
Off: product not PLC-paired
Button:
Press and release after 1 s: request pairing
Press and release after 6 s: reset pairing
G
Ethernet AUX connector
Light:
Irregular flashing green: Ethernet connection
Off: no Ethernet connection
H
Factory Reset
Button:
Press and release after 5 s: product factory reset
I
Current transformer inputs

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4Installation conditions
The Smart Master G3 must be installed in a suitable place, in view of the information below:
-The ambient temperature, humidity and dust are compatible with the proper operation of
the device (refer to RD1)
-The device must not be installed in direct sunlight or close to other heat sources. Do not
install the device direct sunlight, which can have the following consequences:
oRapid ageing of the electronic components
oDeterioration of the paint and other minor aesthetic faults.
-When installed indoor, the Smart Master G3 must be enclosed in a casing offering at least
IP4X protection
-The product can be installed on a 35 mm DIN rail:
oPlace the product in front of the DIN rail
oPull the tab with a screwdriver
oClip the product onto the DIN rail.
Position
Designation
A
Manufacturer and product
information
B
PLC identification information:
MAC address and DAK number
C
Ethernet identification
information: MAC addresses for
the ETH and AUX ports
D
Product serial number
E
Safety marking and power supply
information
F
Product P/N
;
A
B
C
D
E
F
Figure 1: Mechanical installation instructions

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5Internet connectivity options
The Smart Master G3 operates with an Internet connection. This product can be connected to the
Internet by an Ethernet cable, by PLC or by a modem.
Choose the means of connection to the Internet before wiring the product.
Switch on the device before running the connection tests (refer to the electrical connections
and commissioning chapters).
REMINDER: the device is communicating properly over the Internet when the power light is green.
CAUTION: if the Ethernet cable connected to the MG3 is outside the IPX4 casing, the operating
voltage must be at least 300 V. Also, make sure that the cable does not touch any exposed live
surfaces inside the casing.
5.1 Ethernet cable connection
The device has an Ethernet LAN connector for a direct connection to the internet router.
The LAN LED comes on and flashes when a connection is established.
5.2 PLC plug connection
5.2.1 Ethernet cable on the Internet router
If the Internet router is a long way from the electrical system and is not equipped for PLC, the
device can be connected to the Internet through a PLC plug (P/N: MLSH-COM-1).
PLC communication uses the electrical wiring in the housing, and no additional cables are
necessary (for single- or three-phase power supplies).
RJ45 cable
Figure 2: diagram of the connection by wire between the MG3 and the Internet router

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The steps to connect the PLC plug:
-Switch off the Internet router
-Connect the PLC plug to the wall socket next to the Internet router
-Use the Ethernet cable provided to connect the PLC plug to your Internet router (refer to
your Internet access provider’s documentation for more information). Use only one of the
Ethernet ports numbered 1 to 4 on the back of the router. Do not use the fibre port or any
other ports.
-Switch on the Internet router by connecting it to the available socket on the back of the PLC
plug
-The two PLC devices (the MG3 and the PLC plug MLSH-COM1) are paired automatically in
1 to 15 minutes.
(refer to paragraph 3 to check the proper operation)
5.2.2 Wi-Fi connection on the Internet router
A Wi-Fi repeater can be used to connect to the router to establish Wi-Fi communication between
the Smart Master G3 and the Internet router. Recommended P/N: WA850RE
The connection is shown below.
RJ45 cable
Figure 4: Diagram of connection to the Internet with a Wi-Fi repeater
MLSH-COM-1
Figure 3: Diagram of connection to the Internet through a PLC plug
RJ45 cable
Wi-Fi repeater
PLC communication

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-Connect the Wi-Fi repeater to a socket close to the unit
-Connect the RJ45 cable between the Wi-Fi repeater and the Smart Master G3
-Configure the Wi-Fi repeater (refer to the user manual) and wait for the Smart Master G3
to connect to the Internet
Refer to the behaviour of the lights in paragraph “3 Description of the Smart Master G3 –
chapter 3” to check the proper operation
5.3 Connection over an existing PLC circuit
The Smart Master G3 can communicate with other PLC devices in the home over the PLC circuit. If
a PLC circuit connected to the Internet already exists in the house, the MG3 can be added to this
network (refer to chapter 7.3 to add the MG3 to the network).
This means of communication is very useful in the following cases:
-The Internet router itself is equipped with PLC (intrinsically or through PLC plugs).
-A PLC circuit using PLC plugs already exists in the building.
Technical notes for connections to specific part numbers can be found on the MyLight Systems
website.
5.4 Connection through a cellular modem
If there is no available Internet network, a connection through a cellular modem can be added.
Carefully read the installation manual of the cellular modem.
Technical notes on specific modem configurations can be found on the MyLight Systems website
(e.g., backups).
5.4.1 Ethernet connection to the cellular modem
The two devices can be connected by the LAN port on the Smart Master G3 and the LAN port on
the cellular modem.
RJ45 cable
Figure 5: Diagram of the connection between the MG3 and a cellular
modem
MLSH-COM-2

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The cellular modem is a Smart Master G3 accessory. Refer to the user manual to install the equipment.
5.4.2 PLC connection on the cellular modem
Depending on the configuration of the building, the cellular modem may be installed a long way
from the Smart Master G3 (for better signal reception, for example). In this case, the modem can
be combined with a PLC plug as shown below.
-Connect the PLC plug to a wall socket.
-Connect the RJ45 cable between the PLC plug and the cellular modem.
-Connect the power supply of the modem to the PLC plug.
-Wait for the cellular modem to start up. This can take up to 10 minutes.
-The two devices (the MG3 and the PLC plug) are paired automatically in 1 to 15 minutes.
Refer to the behaviour of the lights in paragraph “Overview of the Smart Master G3 – chapter 5”
to check the proper operation
6Electrical connections
6.1 Power supply connection
The Smart Master G3 must be protected by a power circuit breaker when it is powered from the
electrical grid. The circuit breaker is used to cut the power to the device and must remain readily
accessible. The requirements of compatible electrical grid are shown on the technical data sheet
(RD1).
6.1.1 Single-phase power supply
When connected to a single-phase power supply, the device must be protected by a P+N 2 A C
curve circuit breaker. In this configuration:
-the neutral (N) must be powered by the system neutral
-the phase (L1) must be powered by the system’s only phase
RJ45 cable
Figure 6: Internet connection through the cellular modem and a PLC
plug
MLSH-COM-2
MLSH-COM-1
PLC communication

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6.1.2 Three-phase power supply
When connected to a three-phase power supply, the device must be protected by a 3P+N 2 A C
curve circuit breaker or a four-pole 2 A C curve circuit breaker. In this configuration:
-the neutral (N) must be powered by the system neutral
-the three phases (L1, L2 and L3) must be powered by each of the system phases.
It is advisable to identify each of the phases when they are connected to the power supply. This
identification is important in order to connect current transformers and to measure the energy
accurately.
Figure 7: Example of single-phase wiring
Figure 8: Example of three-phase wiring

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6.2 Relay connection
The device is equipped with a switching relay. This relay is only used to open or close a power
circuit. It can support a maximum current of 20 A at a voltage of 230 V. For safety reasons, the relay
must be protected by a 20 A C curve circuit breaker.
The Smart Master G3 relay is normally open. It is controlled by MyLight Systems software. In an
emergency, press the relay button for 1 second to manually apply a voltage to the charge
connected downstream of the relay. It is also possible to switch on using the MyProPortal interface
for professionals or the MYL 2.0 user application.
The light is a constant green when the charge is powered up.
6.3 Extension and current transformer connections
The current transformers and extensions are designed to be used exclusively with MyLight Systems
products. Extensions and current transformers must be enclosed in casings or technical ducts
offering at least IP4X protection.
6.3.1 Extension connections
Depending on the configuration of the home, the supplied transformer cables could be too short
(60cm by default) to reach the measuring device. Therefore, MyLight Systems offers extra
Figure 9: Example of use for relay wiring

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extensions to connect the current transformer to the measuring device. The extensions are 3m long
and can be daisy-chained to reach a maximum length of 12m.
(extension P/N: MLSH-MG3-19)
Perform the following steps to install an extension:
-Make sure that a dangerous voltage is not applied to the MG3 device by checking the
position of the protective circuit breaker. The circuit breaker must be in position 0 (down).
-Put the extension in the cable duct provided (refer to the applicable regulations)
-Connect the male end of the extension to the output connector of the product (CT1, CT2
or CT3) and align the arrows on the male and female connectors.
-Screw in the connector to lock it.
Figure 10: Locking the current transformer or extension connector
-Connect the female end of the extension to the male end of the current transformer.
-Screw in the connector to lock.
6.3.2 Current transformer connections
The Smart Master G3 smart meter has three inputs for current transformers. The transformers are
equipped with a cable measuring about 60 cm.
Perform the following steps to install a current transformer:
-Make sure that a dangerous voltage is not applied to the MG3 device by checking the
position of the protective circuit breaker. The circuit breaker must be in position 0 (down).
-Check that the current transformer is not placed around a live cable.
-Connect the female end of the current transformer to the extension or the output
connector of the product (CT1, CT2 or CT3) and align the arrows on the male and female
connectors.
-Screw in the connector to lock it.
-Make sure that the cable to be monitored is not live.
-Put the current transformer around a phase cable of the house or of the equipment to be
measured. Pay attention to the direction of the arrows. They point towards the mains to
measure the consumption of the house or of an electrical device, and towards the inverter
for production measurements.
For three-phase systems, two other current transformers must be placed around the cables L2
and L3, and respectively connected to the inputs CT2 and CT3 of the equipment.
CAUTION:

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-The extension or the current
transformer must not be pinched.
-The wires inside the cable must not
be visible through the outer covering
of the cable. In this case, replace the
extension or the transformer.
-The connector must be fully inserted
in the product. No metal parts must
be visible and/or accessible. The
connector must be screwed home.
Example of use:
6.4 Connection of the RS485 accessory
The Smart Master G3 can communicate with energy meters and external actuators. This
functionality allows the number of measurement points and controls in the building to be
increased.
Up to 10 external RS485 devices can be connected to the product. These devices can be placed at
a maximum distance of 100 m. The product is compatible with all the MyLight Systems meters and
actuators. Details of the products are available on the website www.mylight-systems.com.
Follow the steps below to install an RS485 product correctly:
-Install the Smart Master G3 (refer to chapter 4: Installation conditions).
-Install the meter or external actuator (refer to the installation instructions supplied with the
product)
-Take one RS485 communication cable or two 0.5mm² twisted wires with a minimum
operating voltage of 300 V AC. Cut to the estimated length required to connect the two
devices.
-Connect one wire to connector A of the RS485 port of the MG3, then connect the second
wire to connector B of the RS485 port of the MG3.
Figure 11: Example of the use of the extension and the current transformer
MLSH-MG3-19

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-On the meter or external actuator, connect wire A to terminal A of the meter, and wire B
to terminal B of the meter or actuator. (refer to the installation manual of the meter or
actuator for the position of the terminals)
Example of a connection:
Note:
-Several products can be connected to the same RS485 cable. The Smart Master G3 must
always be at the master end of the RS485 cable.
-If the communication wire between several devices is longer than 10 m, a 120 Ohm resistor
must be installed at the slave end. (refer to the technical notes on our website).
CAUTION:
-The RS485 protocol uses a low-current communication bus.
-If the RS485 cable comes out of the IP4X casing, it must be placed in the technical ducts for
low currents. The RS485 cables must have an operating voltage of 300 V AC and must be
kept well clear of bare live parts.
6.5 Ethernet connection
The Smart Master G3 has two Ethernet ports: LAN and AUX.
An additional device can be connected to the Internet by connecting an Ethernet cable to the AUX
port. Example of use: Internet connection for an Envoy gateway.
Refer to the Internet connectivity options chapter to connect the Ethernet cable to the LAN port.
RS485
Figure 12: Example of the connection of RS485 devices
Master end
Slave
end

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6.6 Example of final connections
Figure 13: Example of a single-phase power supply and production measurement by current transformer
Figure 14: Example of a three-phase power supply and production measurement by an RS485 meter
Electrical Grid
Photovoltaic solar
panels
Inverter
Water heater
Electrical Grid
Photovoltaic solar
panels
Inverter
Water heater
RS485
meter

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7Commissioning
7.1 Prerequisites
-Check that the means of communicating with the Internet are available
-Check the connections of all the cables and check they are tight.
-Install all the protective covers on the casing before switching on.
7.2 Switching on the Smart Master G3
Once the prerequisites have been met, switch on the Smart Master G3 by raising the circuit breaker
to which it is connected. The power light must flash green while the product is starting up. If this is
not the case, check the power supply and check that the connections are tight. The light will
indicate if the product is functional after 30 seconds.
→ Refer to chapter 3 Description of the Smart Master G3 for more details about the indicator lights.
7.3 Connection of the Power Line Communication (PLC)
The Smart Master G3 communicates over PLC and is compatible with all off-the-shelf PLC devices.
Once the Smart Master G3 has been switched on, it can be paired with other PLC devices.
7.3.1 Addition of a MyLight Systems PLC device
MyLight Systems offers other products that communicate using PLC. These products include
meters, actuators and SmartPlugs.
Follow the recommendations below to improve the connections between the various PLC devices:
-All the PLC devices in the electrical system must be at least 1 metre away in order to
guarantee a good connection.
-It is preferable to use only one PLC device per unit.
Pairing the devices:
-Before pairing a MyLight Systems PLC device, check that it is not connected to another
network (the PLC light is off).
-Press the PLC button on the Smart Master G3 for 1 second. The PLC light flashes green.
-Press the PLC button on the second MyLight device for 2 seconds. The PLC light flashes
green.
-Wait until both lights are permanently green.
Un-pairing the devices:
-Press the PLC button for 6 seconds, then release it.
NOTE:
-When they are produced, all the MyLight Systems devices are automatically paired with
one another. Press the Factory Reset button for 5 seconds to reset your device.
-In three-phase systems, there is no need to add a PLC phase coupler. The phase coupler is
built into the Smart Master G3.

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Special case of the MyLight Systems PLC plug P/N MLSH-COM-1:
MyLight Systems has developed a specific PLC plug for easier installation. It can be used to connect
the Smart Master G3 to the Internet by automatic pairing. This takes between 1 and 15 minutes.
The PLC plug (MLSH-COM-1) is not a SmartPlug and does not measure the consumption of a device.
CAUTION: Only one MLSH-COM1-1 must be present. It is not possible to have several in the same
house.
7.3.2 Connection of an external PLC device
Follow the procedure below to pair the Smart Master G3 with another off-the-shelf device:
-Un-pair the third-party device (refer to the user manual)
-Press the PLC button on the Smart Master G3 for 1 second. The PLC light flashes green.
-Wait for the PLC light to shine fixed green to indicate that the two products have been
paired.
7.4 Registration of the system
Only professionals qualified by MyLight Systems can register users.
Once the Smart Master G3 has been switched on, it is necessary to register it using the MyProPortal
professional interface, so that it can monitor and manage the electrical devices in the home. To
register the system, log on with the login provided by the MyLight Systems personnel at the
address https://pro.mylight-systems.com on your computer, smartphone or tablet.
To register, you will need:
•your name, first name, address, e-mail address, telephone number and the customer’s
date of birth
•the number of photovoltaic modules and the power of the installed modules
•the customer’s Internet access provider
•the number of the Enedis supply point
•the serial number of the CMU (if integrated)
•the MAC address or the serial number of the Smart Master G3
•the MAC address or the serial number of the MyLight PLC devices to be paired
Note: registration is only possible if the Smart Master G3 is connected to the Internet using one of
the connectivity options described in chapter 5 (the power light is fixed green).
Users can consult their production and consumption data, programme their devices automatically
with the GreenPlay program, or manually on their dedicated application at the address
https://myhome.mylight-systems.com (on a computer, smartphone or tablet).
8Maintenance and cleaning
To protect the safety of users, it is forbidden to open and repair the product.
Cleaning the product with water or any other product is forbidden. Clean the exterior surfaces of
the product with a dry, lint-free cloth. Clean the accessible surfaces by rubbing gently.