SolarEdge SE-MTR-3Y-400V-A User manual

Installation Guide
Energy Meter with Modbus
Connection
For Europe, APACand South Africa
Version 1.0

Disclaimers
Important Notice
Copyright © SolarEdge Inc. All rights reserved.
No part of this document may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means,
electronic, mechanical, photographic, magnetic or otherwise,
without the prior written permission of SolarEdge Inc.
The material furnished in this document is believed to be
accurate and reliable. However, SolarEdge assumes no
responsibility for the use of this material. SolarEdge reserves
the right to make changes to the material at any time and
without notice. You may refer to the SolarEdge web site
(www.solaredge.com) for the most updated version.
All company and brand products and service names are
trademarks or registered trademarks of their respective holders.
Patent marking notice: see http://www.solaredge.com/patent
The general terms and conditions of delivery of SolarEdge shall
apply.
The content of these documents is continually reviewed and
amended, where necessary. However, discrepancies cannot be
excluded. No guarantee is made for the completeness of these
documents.
Energy Meter with Modbus Connection Installation Guide MAN-01-00643-1.0
Disclaimers1

The images contained in this document are for illustrative
purposes only and may vary depending on product models.
Emission Compliance
This equipment has been tested and found to comply with the
limits applied by the local regulations.
These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, you are encouraged to try to correct
the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and the
receiver.
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician
for help.
Energy Meter with Modbus Connection Installation Guide MAN-01-00643-1.0
2 Emission Compliance

Changes or modifications not expressly approved by the party
responsible for compliance may void the user’s authority to
operate the equipment.
Energy Meter with Modbus Connection Installation Guide MAN-01-00643-1.0
Disclaimers3

Version History
Version 1.0 (August 2019) - Initial release
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4 Emission Compliance

Contents
Disclaimers 1
Important Notice 1
Emission Compliance 2
Contents 5
HANDLING AND SAFETY INSTRUCTIONS 7
Safety Symbols Information 7
Chapter 1: The SolarEdge Energy Meter with Modbus
Connection 9
Package Contents 10
Terminology 11
Metering Applications 12
Meter Connection Options 14
Meter Interfaces 15
Chapter 2: Meter Installation 19
Installation Guidelines 19
Installing and Connecting the Meter 21
Chapter 3: Configuration 31
SolarEdge Device Firmware Version 31
Device Configuration 33
Appendix A: Troubleshooting the Meter 39
Communications Failure 39
The Energy Value is not Advancing 42
Appendix B: Installing Two Meters 44
Connecting Two Meters 44
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Contents5

Configuring the Dual-Meter Connection 46
Verifying the Dual-Meter Connection 48
Troubleshooting the Dual-Meter Connection 48
Appendix C: Monitoring Platform - Meter Data 49
Appendix D: External Lightning Protection 53
Appendix E: Meter Technical Specifications 55
Support Contact Information 58
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6 Contents

HANDLING AND SAFETY
INSTRUCTIONS
During installation, testing and inspection, adherence to all the
handling and safety instructions is mandatory. Failure to do so
may result in injury or loss of life and damage to the
equipment.
Safety Symbols Information
The following safety symbols are used in this document.
Familiarize yourself with the symbols and their meaning before
installing or operating the system.
WARNING!
Denotes a hazard. It calls attention to a procedure
that, if not correctly performed or adhered to, could
result in injury or loss of life. Do not proceed beyond a
warning note until the indicated conditions are fully
understood and met.
CAUTION!
Denotes a hazard. It calls attention to a procedure
that, if not correctly performed or adhered to, could
result in damage or destruction of the product. Do
not proceed beyond a caution sign until the indicated
conditions are fully understood and met.
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HANDLING AND SAFETY INSTRUCTIONS7

NOTE
Denotes additional information about the current
subject.
IMPORTANTSAFETYFEATURE
Denotes information about safety issues.
Disposal requirements under the Waste Electrical and
Electronic Equipment (WEEE) regulations:
NOTE
Discard this product according to local regulations or
send it back to SolarEdge.
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8 Safety Symbols Information

Chapter 1: The SolarEdge Energy
Meter with Modbus Connection
The SolarEdge Energy Meter with Modbus Connection (also
referred to as “the meter”) enables measuring the power and
energy of the photovoltaic (PV)system.
The meter is used by the inverter for the following applications:
Production metering
Consumption monitoring
Export limitation
Smart Energy on-grid applications
The meter supports both single-phase and three-phase grids,
and requires the installation of Current Transformers (CTs). The
CTs are available from SolarEdge:
When used in a single-phase grid, one CT is required.
When used in a three-phase grid, three CTs are required.

NOTE
This installation guide is for connection of the meter to
inverters using SetApp.
An installation guide for connection of the meter to
inverters using a display is available for download from:
https://www.solaredge.com/sites/default/files/solaredge-
meter-installation-guide-dispaly-row.pdf
Energy Meter with Modbus Connection Installation Guide MAN-01-00643-1.0
Chapter 1: The SolarEdge Energy Meter with Modbus


Package Contents
SolarEdge Energy Meter with Modbus Connection
Two DIN rail adapters
Four screws
Installation Guide
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10 Package Contents

Terminology
The following terms are used in this document:
Export: The power injected to the grid.
Import: The power purchased from the grid.
Export/Import meter: A meter that is installed at the grid
connection point and measures the energy/power
exported/imported to/from the grid.
Consumption: The power consumed at the site.
Consumption power is calculated as the sum of self-
consumption power and import power.
Consumption meter: A meter that is installed at the load
consumption point and measures the energy/power
consumed by the site.
Self-consumption: The PVpower consumed by the site
and not fed into the grid.
Production: The power produced by the PV system.
Production meter: A meter that is installed at the inverter
output or site AC connection, and measures the
energy/power produced by the PVsystem or site.
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Figure 1: Terminology Illustration
Metering Applications
The SolarEdge inverter or the Commercial Gateway reads data
from the meter, typically using one of the scenarios illustrated
in the figures below:
Power production from a meter installed at the output
power connection of the inverter
Exported/imported power from a meter installed at the
grid connection point
Power consumption from a meter installed at the load
consumption point
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12 Metering Applications


Figure 2: Typical installation with production meter
Figure 3: Typical installation with export/import meter
Figure 4: Typical installation with consumption meter
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Meter Connection Options
In a single inverter system, the meter is connected directly to
an RS485 port of the inverter.
Figure 5: Single-inverter connection
In a multiple inverter system, two options are available:
The meter is connected to an RS485 port of one of the
inverters.
If the inverter has a second RS485 port, use this port to
connect between the inverters.
If the inverter has only one RS485 port, use an RS485
Plug-In (available from SolarEdge) or ZigBee
communication between the inverters.
The meter is connected to one of the RS485 ports of a
Commercial Gateway. The Commercial Gateway’s second
RS485 port can be used to create an RS485 bus for
communication between the inverters. This option is
illustrated in Figure 6 .
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14 Meter Connection Options

Figure 6: Multi-inverter connection with Commercial Gateway and
meter
Meter Interfaces
This section describes the SolarEdge meter's interfaces.
Figure 7: Meter Interfaces
Voltage connections: for connection to the grid
Wye: L1, L2, L3, N, Ground
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CTconnections (L1 CT, L2 CT, L3 CT): for connection to
current transformers
RS485: for connection to the inverter/gateway
LEDs: used to monitor meter status.
Modbus address DIPswitches (ID 1, 2, 3): used to set the
Modbus address.
Termination DIPswitches (TERM 1, 2): used to set RS485
termination.
LEDs
The meter utilizes the LEDs in the front of the unit in order to
indicate current status.
Figure 8: Meter LEDs

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16 Meter Interfaces

LED
#LED Function Indication
1 Green Operational status Blinking ON/OFF - normal
operation
2 Yellow RS485 Modbus
communication
Blinking ON/OFF -
communication OK
3 Yellow Energy
management
Single blink when the
meter reads an energy
change of ~1 kwH.
DIPSwitches
Modbus Address DIPSwitches
The Modbus address DIPswitches are used to set the Modbus
address of the meter. The addressing options are listed in the
table below. See the figure Modbus Address and Termination
DIP Switches on page 18 for switch direction guidelines.
Modbus Address Switch 1 Switch 2 Switch 3
0 Down Down Down
1 Up Down Down
2 (factory default) Down Up Down
3 Up Up Down
4 Down Down Up
5 Up Down Up
6 Down Up Up
7 Up Up Up
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Termination DIPSwitches
The Termination DIPswitches are used to configure RS485
wiring termination. The termination options are listed in the
table below. See the figure Modbus Address and Termination
DIP Switches on page 18 for switch direction guidelines.
RS485 Termination TERM
1
TERM
2
Terminated Down Down
Not Terminated (factory default) Up Up
Figure 9: Modbus Address and Termination DIP Switches
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18 Meter Interfaces

Chapter 2: Meter Installation
Installation Guidelines
AC wire specifications: 1.3 to 2.0 mm diameter stranded wire,
600 V, type THHN, MTW, or THWN.
RS485 wiring specifications:
Cable type: Min. 3-wire shielded twisted pair (a 4-wire
cable may be used)
Wire cross-section area: 0.2- 1 mm² (a CAT5 cable may be
used)
NOTE
If using a cable longer than 10 meters in areas where
there is a risk of induced voltage surges by lightning,
it is recommend to use external surge protection
devices. For details refer to External Lightning
Protection on page 53. If grounded metal conduits
are used for routing the communication wires, there
is no need for a lightning protection device.
The meter is considered “permanently connected
equipment” and requires a disconnect means (circuit
breaker, switch, or disconnect) and overcurrent protection
(fuse or circuit breaker).
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Chapter 2: Meter Installation 19