enphase ENV-S-WM230 User manual

INSTALLATION AND OPERATION MANUAL
141-00035 Rev 01
Enphase Envoy-S Metered Multiphase

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
2
Corporate Headquarters Contact Information
Enphase Energy Inc.
1420 N. McDowell Blvd.
Petaluma, CA 94954
enphase.com
enphase.com/global/support-request
Environmental Protection
Waste electrical products should not be disposed of with household waste. Please recycle where
facilities exist. Check your Local Authority or retailer for recycling advice.
Other Information
For third-party license information, refer to enphase.com/licenses.
For Enphase patent information, refer to enphase.com/company/patents/.
Product information is subject to change without notice. All trademarks are recognised as the property of
their respective owners.
For warranty text, refer to enphase.com/warranty.
User documentation is updated frequently; Check the Enphase website (enphase.com/support) for the
latest information.
Copyright © 2016 Enphase Energy Inc. All rights reserved.
Audience
This manual is intended for use by professional installation and maintenance personnel.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Table of Contents
SAFETY ................................................................................................................................................ 5
Read this First ....................................................................................................................................... 5
Safety Instructions................................................................................................................................ 5
The Enphase Envoy-S.......................................................................................................................... 6
How the Enphase Home Energy System Works ................................................................................. 6
Installation Planning and Preparation ............................................................................................... 7
Pre-installation Checks......................................................................................................................... 8
Download the Installer Toolkit App.................................................................................................. 8
Box Contents..................................................................................................................................... 8
Plan the Enclosure Type................................................................................................................... 8
Use a Phase Coupler for a Multiphase Site..................................................................................... 8
Plan the Internet Connection ........................................................................................................... 8
Metering CT Considerations ............................................................................................................ 9
Required Items.................................................................................................................................. 9
Optional Items................................................................................................................................... 9
System Metering............................................................................................................................... 9
Create the Map and Install the PV Modules and Enphase Microinverters.................................. 10
Installation Sequence ......................................................................................................................... 11
Installing the Envoy-S........................................................................................................................ 12
1. Choose a Location for the Envoy-S................................................................................................ 13
2. Provide a Power Connection.......................................................................................................... 13
3. Install CTs for Metering.................................................................................................................. 14
Extend CT Leads, If Needed ........................................................................................................... 16
4. If Required, Install DRM Support and a Central............................................................................. 17
5. Energise the Envoy-S ...................................................................................................................... 17
6. Launch Installer Toolkit and Start AP Mode ................................................................................. 17
7. Detect the Devices .......................................................................................................................... 18
Method A: Provision Devices with Installer Toolkit ...................................................................... 18
Method B: Discover Devices with Installer Toolkit ....................................................................... 18
Method C: Discover Devices with the Envoy-S.............................................................................. 18
With Both Methods ......................................................................................................................... 18
8. Verify System Configuration .......................................................................................................... 19
9. Connect to Enlighten ...................................................................................................................... 20
Method A: Integrated Wi-Fi............................................................................................................. 20
Method B: Enphase Mobile Connect Modem ............................................................................... 20
Method C: Ethernet Cable .............................................................................................................. 21
Method D: Power Line Communication Bridges ........................................................................... 21
If the Internet Connection Fails...................................................................................................... 22
10. Send System Summary Report .................................................................................................... 22
Activate Monitoring........................................................................................................................... 23
Method A: If the Envoy-S is Associated with a System in Installer Toolkit ................................. 23
Method B: If the Envoy-S is NOT associated with a System in Installer Toolkit ......................... 23
View System Performance in Enlighten ........................................................................................ 23
Envoy-S Operation............................................................................................................................. 24
Envoy-S Displays and Controls .......................................................................................................... 24
Envoy-S LED States............................................................................................................................. 24
LED Behaviour at Initial Start Up ........................................................................................................ 25
Initial Communications Check ....................................................................................................... 25

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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More about Device Communications States ................................................................................ 25
Initiate a New Scan for Devices ......................................................................................................... 25
Connecting to Envoy-S...................................................................................................................... 26
Connect Using the Installer Toolkit App ............................................................................................ 26
Method A: Use the Site’s Wireless Router to Connect to the Envoy-S......................................... 26
Method B: Create a Wireless Access Point................................................................................... 26
Complete the Connection to Envoy-S with Installer Toolkit ......................................................... 27
Connect Remotely Using Enlighten.................................................................................................... 28
Connect Using the Envoy-S Local Interface ...................................................................................... 29
View Production Readings ............................................................................................................. 29
View or Change Monitoring Settings ............................................................................................. 29
View Microinverter Information ..................................................................................................... 33
View Envoy Information ................................................................................................................. 33
Open a Connection for Enphase Troubleshooting........................................................................ 33
Troubleshooting ................................................................................................................................ 34
Device Detection Issues ..................................................................................................................... 34
Issue: Installer Toolkit Shows “Cross Domain Traffic Reported” ................................................ 34
Issue: Device Communications LED is Solid Amber..................................................................... 34
Issue: Installer Toolkit Detects Fewer Devices than Expected .................................................... 34
Issue: No Devices are Reporting.................................................................................................... 35
Issue: Installer Toolkit Indicates that Scanning is Inhibited......................................................... 35
Power Production Issues ................................................................................................................... 36
Issue: Power Production LED is solid amber ................................................................................ 36
Internet Connection Issues ................................................................................................................ 36
Issue: Network Communications LED is Amber or Off ................................................................ 36
Issue: Wi-Fi Problems ..................................................................................................................... 37
Issue: Cellular Connection Status “Not Connected” ..................................................................... 37
Issue: Envoy-S is not Connecting with a New Router ................................................................... 37
Local Networking Considerations...................................................................................................... 38
DHCP versus Static IP Addressing ................................................................................................ 38
MAC Filtering .................................................................................................................................. 38
Firewall Settings ............................................................................................................................. 38
Replacing an Envoy-S ......................................................................................................................... 39
Technical Data................................................................................................................................... 41

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
5
SAFETY
Read this First
Follow the instructions in this manual. These instructions are key to the installation and maintenance of the
Enphase Envoy-S Metered Multiphase™.
To ensure the safe installation and operation of the Envoy-S, note the following safety symbols that appear
throughout this document to indicate dangerous conditions and important safety instructions.
DANGER:
This indicates a hazardous situation, which if not avoided, will result in death or
serious injury.
WARNING:
This indicates a situation where failure to follow instructions may be a safety
hazard or cause equipment malfunction. Use extreme caution and follow
instructions carefully.
NOTE:
This indicates information that is very important for optimal system operation.
Follow instructions closely.
Safety Instructions
DANGER:
Risk of
electrocution!
Do not install current transformers (CTs) when current is flowing in the sensed
circuit. Always install CT wires in the terminal blocks before energising the
sensed circuit.
DANGER: Risk
of electric
shock. Risk of
fire.
Do not attempt to repair the Envoy-S; it contains no user-serviceable parts.
Tampering with or opening the Envoy-S will void the warranty. If the Envoy-S
fails, contact Enphase for assistance (enphase.com/global/support-request).
Refer servicing to qualified personnel.
Only qualified personnel should troubleshoot, install, or replace the Envoy-S.
Do not wire unused terminals or terminal blocks on the Envoy-S.
DANGER: Risk
of electric
shock.
Do not use Enphase equipment in a manner not specified by the manufacturer.
Doing so may cause death or injury to persons, or damage to equipment.
If you wire the Envoy-S at the sub-board, always de-energise the sub-board
before beginning wiring.
WARNINGS:
Before installing or using the Envoy-S, read all instructions and cautionary
markings in the technical description and on the Envoy-S.
Risk of equipment damage. When installing the Envoy-S in an enclosure, choose
area for installation where ambient temperature does not exceed 46º C.
NOTES:
Perform all wiring in accordance with all applicable local electrical codes.
To ensure optimal reliability and to meet warranty requirements, the Enphase
Envoy-S must be installed according to the instructions in this manual.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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The Enphase Envoy-S
The Enphase Envoy-S is an integral component of the Enphase Home Energy Solution. It operates
between Enphase Microinverters, or other PV system, and the Enphase Enlighten™ web-based monitoring
and analysis software. When used with Enphase devices, the Envoy-S can control grid management
functions and monitor PV production and site consumption. When used with non-Enphase PV systems, it
can collect production and consumption data, but it does not control grid management functions.
The Envoy-S Metered Multiphase uses precision Current Transformers (CTs) to measure PV production
from the solar main supply switch and home energy consumption from the AC mains.
How the Enphase Home Energy System Works
This integrated system maximises energy harvest, increases system reliability, and simplifies design,
installation and management.
The Enphase Microinverter converts the DC output of the PV module into grid-compliant AC power. In
addition to performing the DC to AC conversion, it maximises energy production by using a sophisticated
Maximum Power Point Tracking (MPPT) algorithm.
The Envoy-S operates as a gateway between the Enphase Microinverters and Enlighten. It collects energy
and performance data from the PV system over on-site AC power lines, and it forwards that data to
Enlighten, via the Internet, for statistical reporting. Enlighten analyzes the data collected by each
communicating device. Enlighten automatically detects any shortfall in energy production, identifies
possible causes, and suggests solutions. Enlighten constantly monitors every Enphase device connected
to the Envoy-S and is essential for system monitoring and troubleshooting.
Enlighten provides a wide range of information on system performance. You can access Enlighten on
your computer or mobile device and view current performance information at any time.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Installation Planning and Preparation
To the Local Area Network (LAN), the Envoy-S is just another host on the network, much like a personal
computer. The Envoy-S simply connects to the on-site router or Enphase Mobile Connect™(cellular
modem) for communications with the Enphase Enlighten monitoring and analysis website. The Envoy-S
communicates with the Enphase Microinverters and AC Batteries using the site’s power lines.
After the Envoy-S is installed and all devices (microinverters and/or batteries) are scanned or
provisioned, the Envoy-S maintains an internal database of all known Enphase devices at the site it
manages. At regular intervals, the Envoy-S polls each Enphase device for its energy data. Using its
Internet connection, the Envoy-S then forwards that information to Enlighten. The Envoy-S also reports
any error conditions affecting itself or other Enphase devices. You can view both energy data and error
conditions in Enlighten.
The Envoy-S incorporates power line and Internet communications functions. One "side" of the Envoy-S
communicates with the Enphase devices through power lines at the site. The other "side" of the Envoy-S
communicates with Enlighten over the Internet.
Enlighten
Microinverters
Router
Envoy-S
POWER LINE
COMMUNICATIONS
NETWORK
COMMUNICATIONS
To Internet
Switchboard
AC Batteries

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Pre-installation Checks
Review the following pre-installation checks before you install the Envoy-S:
Download the Installer Toolkit App
The Enphase Installer Toolkit is a mobile app for iOS and Android devices (smart
phone or tablet) that allows installers to configure the system while onsite,
eliminating the need for a laptop and improving installation efficiency.
Download the latest version of the Enphase Installer Toolkit mobile app
and open it to log in to your Enlighten account. With this app, you can
connect to the Envoy to track system installation progress. Go
to enphase.com/installer-toolkit or scan the QR code:
To run the Installer Toolkit app, you need either of the following
mobile devices:
-An Android mobile device running Android version 5
(Lollipop) or later, or
-An iOS device running iOS 8.0 or later, specifically an iPhone 4 or
later or an iPod Touch 5th generation
Box Contents
Check the shipping box for the following items:
Enphase Envoy-S Metered Multiphase
Current transformers (CTs): Two split core CTs, one for production and one for consumption
metering. You must order additional CTs (CT-100-SPLIT) to separately monitor multiple phases.
Length of DIN rail for mounting
Ferrite bead to attach to your Ethernet Cable, if used
Enphase Envoy-S Quick Install Guide
Plan the Enclosure Type
Install the Envoy-S in an IP54-rated, or better enclosure. Use an appropriately rated enclosure if hard-
wiring indoors.
Use a Phase Coupler for a Multiphase Site
If you are installing in a multiphase application, the power line communication signal must be “coupled”
between the phases to allow the Envoy to communicate with all of the Enphase devices in the system.
Install a phase coupler on the load side of the over-current protection device. See the Enphase Technical
Brief on Phase Coupling for your region at enphase.com/support or consult Enphase support for
compatible devices.
Plan the Internet Connection
To use the Enlighten web-based monitoring and analysis software, additional requirements are:
Internet connection for the Envoy-S through a traditional router or modem or Enphase Mobile
Connect (Enphase model CELLMODEM-02). Decide whether to connect the Envoy-S to the
Internet using integrated Wi-Fi, an Enphase Mobile Connect modem, or using a PLC bridge with
Ethernet cables.
One of the following Web browsers with cookies enabled: Chrome 5 or higher, Firefox 11 or
higher, Internet Explorer (IE) 9 or higher, or Safari 5 or higher
Enphase Installer
Toolkit mobile
app

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Metering CT Considerations
The Envoy-S uses readings from CTs to report measurement data for PV energy production and energy
consumed by the home or business. When current transformers (CTs) are wrapped around a live wire,
the current going through the wire induces a current on the CTs primary internal winding, which in turn
induces a current on the CTs secondary internal winding. The current on the secondary winding is
proportional to the current on the original circuit and this is used for making measurements. Install the
CTs as shown in the wiring instruction for your region.
Production CTs measure power production through a connection to the solar supply main
switch.
Consumption CTs measure energy consumption through a connection to the AC mains.
To install the CTs, use a protected route in conduit for the CT wires to the Envoy-S. Install one split-core
CT per monitored phase for production metering and one split-core CT per monitored phase for
consumption metering. If you need to extend the CT leads (up to 148 meters), see “Extend CT Leads, If
Needed” on page 16.
Required Items
If you hard-wire the Envoy-S outdoors, you must install it in an IP54-rated (or better) enclosure with
conduit attachment. Note that Metallic enclosures may impair Wi-Fi signal strength. Use an
appropriately rated enclosure if hard-wiring indoors. Do not drill holes for conduit at the top of the
enclosure or anywhere that allows moisture ingress.
The Envoy-S Metered Multiphase includes a production CT and a consumption CT. You must order
additional CTs (CT-100-SPLIT) for multiphase installations. Make sure you have one CT for each phase
monitored, for both production and consumption.
Optional Items
Make sure you have the following optional items, if needed:
Enphase Mobile Connect modem (order Enphase CELLMODEM-02)
Ethernet over power line communication (PLC) bridge with Ethernet cables [order EPLC-02 (EU),
EPLC-03 (UK) or EPLC-04 (AU/NZ) separately]
Ethernet cable (use 802.3, unshielded Cat5E or Cat6). Do not use shielded twisted pair (STP)
cable.
System Metering
The Envoy-S monitors up to 600 Enphase Microinverters and up to 39 Enphase AC Batteries.
Envoy-S name and model
numbers (SKU)
Case
colour
Metering / reporting
Includes AC power
cord or CTs
DRM
ready
Envoy-S Metered,
multiphase (ENV-S-WM-
230)
Black
Integrated PV production and
home consumption metering
(accuracy +/- 1%)
Two split-core CTs
(CT-100-SPLIT).
Order additional CTs
to monitor multiple
phases.
Yes
NOTE: To install multiple Envoys at a single site, see our technical brief on commercial
design at enphase.com/support.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Create the Map and Install the PV Modules and Enphase Microinverters
If you installed an Enphase PV system at this site, create the Enphase installation map and install the PV
modules and Enphase Microinverters. You will scan this map later using Installer Toolkit and your mobile
device. (See “Method A: Provision Devices with Installer Toolkit” on page 18.)
NOTE: You can find an Enphase installation map at the back of any Enphase Microinverter
manual.
Create a paper installation map to record Enphase Microinverter (and Enphase Battery, if
installed) serial numbers and positions in the array. Peel the removable serial number label
from each device and affix it to the respective location on the installation map.
Peel the removable label from the bottom of the Envoy-S and affix it to the installation map.
Always keep a copy of the installation map for your records.
NOTE: If you are setting up the Envoy-S to monitor a non-Enphase PV system, you do not
need to create an Enphase installation map.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Installation Sequence
4. Optional: Install DRM &
a central disconnect
6. Launch Installer Toolkit
and start AP mode
1. Choose a location
for the Envoy-S
2. Provide a power
connection
5. Energise the Envoy-S
9. Connect to Enlighten
10. Send summary report
8. Verify system configuration
7. Detect devices
3. Install CTs, if needed

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Installing the Envoy-S
To install the Envoy-S, perform the following steps and refer to this diagram:
Envoy-S Metered (model number ENV-S-WM-230)
USB
ports
Terminal
blocks
USB
ports
LEDs and buttons
Ethernet port

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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1. Choose a Location for the Envoy-S
a. Install the Envoy-S near the switchboard. This ensures that the Envoy-S receives the strongest
possible communications signal from each device. When installing the Envoy-S Metered,
consider the length of the CT leads when choosing the location. If you need to extend the CT
leads, see “Extend CT Leads, If Needed” on page 16.
b. Install the Envoy-S in a protected dry space (such as a garage, attic, basement, or other cool, dry
location). If the Envoy-S is hard-wired outdoors, you must install it inside an IP54-rated, (or
better) enclosure with conduit attachment. Use an appropriately rated enclosure if hard-wiring
indoors.
NOTE: Metallic enclosures may impair Wi-Fi signal strength.
c. Mount the Envoy horizontally using the included DIN rail.
WARNING: Risk of equipment damage. When installing the Envoy-S in an enclosure,
choose area for installation where ambient temperature does not exceed 46º C.
d. To wall-mount,use two appropriately sized screws and a screwdriver. Mount the DIN rail first,
and then clip the Envoy-S to the DIN rail.
2. Provide a Power Connection
The Envoy-S Metered Multiphase (ENV-S-WM-230) uses terminal blocks for power and metering
connections. It does not include an AC power cord, and you must hard-wire it. When you hard-wire the
Envoy-S outdoors, you must install it in an IP54-rated, or better enclosure with conduit attachment. Use
an appropriately rated enclosure if hard-wiring indoors.
DANGER! Risk of electric shock. Be aware that installation of this equipment includes risk
of electric shock. If you wire the Envoy-S at the sub-board, always de-energise the sub-board
before beginning wiring.
a. Depending on the number of phases you will wire, use a one-, two-, or three-pole (20 A maximum)
circuit breaker for the supply wiring.
b. Make sure supply wiring is 2.5 mm2copper rated at 75º C or better.
c. Locate the screw on the terminal block door, and loosen it with a screwdriver to unlock the door
and flip it open.
d. Depending on the number of phases to wire, connect Line 1 to L1, Line 2 to L2, Line 3 to L3, and
Neutral to N, as required.
e. Tighten all connections to 0.56 Nm.
f. Refer to the following wire colour table, if needed:
Output from Enphase PV
system
Colour code (EU)
Colour code (AU)
Brown –L1 (Active)
Black –L2 (Active)
Grey –L3 (Active)
Blue –Neutral
Green/Yellow –Ground/PE
Brown –L1 (Active)
Black –L2 (Active)
Grey –L3 (Active)
Blue –Neutral
Green –Ground/PE
Red –L1 (Active)
White –L2 (Active)
Blue –L3 (Active)
Black –Neutral
Green –Ground/PE

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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3. Install CTs for Metering
The Envoy-S Metered (ENV-S-WM-230) uses terminal blocks for power and metering connections.
NOTES:
When wiring the Envoy-S for production and consumption metering, be sure to install the
current transformers (CTs) exactly as described for your application.
When using CTs, do not energise the PV system before the CT installation is complete.
Do not install the CTs in a panel where they exceed 75% of the wiring space of any cross-
sectional area within the panel, or refer to local standards for guidance.
You can run more than one wire through the CT if all wires are on the same phase and they
fit the opening in the CT.
Install one split-core CT (model CT-100-SPLIT) per monitored phase for production metering and one
split-core CT (model CT-100-SPLIT) per monitored phase for consumption metering. Use a protected
route in conduit (raceway) for the CT wires to the Envoy-S. If you need to extend the leads (up to 148
meters, see “Extend CT Leads, If Needed” on page 16.
Preparation
a. Before running the CT wires through conduit, use coloured tape to mark each of the CTs and the
free ends of its wires, marking each with a different colour. You can run multiple CT wires
through a single conduit.
b. When installing CTs, it is important to match CT and voltage sense phases. Be sure to
consistently identify all the AC lines at three points: the main switchboard feed, the Envoy, and
the solar production circuit breaker. Wire colours may not always consistently identify Lines 1, 2
and 3. If in doubt, use a multimeter to check.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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Install the CT(s) for Production Metering
Install one split-core CT for each monitored phase to provide production metering. For single-phase,
connect only L1. For three-phase, connect L1, L2 and L3.
DANGER! Risk of electrocution! CTs must be installed with no current flowing in the sensed
circuit. Always install CT wires in the terminal blocks before energising the sensed circuit.
DANGER! Risk of electric shock. Be aware that installation of this equipment includes risk
of electric shock. If you wire the Envoy-S at the sub-board, always de-energise the sub-board
before beginning wiring.
a. Locate the arrow on the CT label.
b. Take care to identify L1, L2 and L3 at the main feed to aid in corresponding L1 - L3 at the Envoy-S
voltage terminals (and I1 - I3 for the production CTs).
a. Connect the white wire from Line 1 to “I1•” and the blue wire to “I1”. 
b. Connect the white wire from Line 2 to “I2•” and the blue wire to “I2”. 
c. Connect the white wire from Line 3 to “I3•” and the blue wire to “I3”. 
d. Open and clamp each CT on the active lines (Line 1, Line 2, and Line 3, if used) of the solar
production circuit with the arrows pointing toward the load (away from the solar array).
e. Tighten all connections to 0.56 Nm.
Install the CT for Consumption Metering (optional)
Install one split-core CT for each monitored phase to provide consumption metering. For single-phase,
connect only L1. For three-phase, connect L1, L2 and L3.
DANGER! Risk of electric shock. Always de-energise circuits before wiring power and CTs.
DANGER! Risk of electric shock. Installation of this equipment includes risk of electric
shock. If you wire the Envoy-S at the sub-board, always de-energise the sub-board before
beginning wiring. If it cannot be de-energised, a qualified electrician may safely install the CT
as directed, making sure to connect the leads and then place the CT around the wire and
latch.

Envoy-S Metered Multiphase Installation and Operation
© 2016 Enphase Energy Inc. 141-00035 Rev 01
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WARNING! Do not install the CT in a panel where they exceed 75% of the wiring space of
any cross-sectional area within the panel, or refer to local standards for guidance.
a. Make sure that the AC mains wire(s) are de-energised until you have secured the CT wires in the
terminal blocks. 
b. Take care to identify L1, L2 and L3.
c. Connect the white wire from Line 1 to “I1•” and the blue wire to “I1”. 
d. Connect the white wire from Line 2 to “I2•” and the blue wire to “I2”. 
e. Connect the white wire from Line 3 to “I3•” and the blue wire to “I3”. 
f. Open and clamp the CT on the main supply lines (Line 1, Line 2, and Line 3, if used). When the
consumption CT is on the line (active) conductor, the arrow should point toward the load (away
from the grid).
g. Tighten all connections to 0.56 Nm.
NOTE: Only run active conductors through the CT. The CT can monitor multiple active
conductors.
Extend CT Leads, If Needed
If needed, an electrician may extend the CT leads using the following guidance:
WARNING! To extend the CT leads, the electrician must use appropriately rated, 0.75 mm2
to 2.5 mm2, twisted pair wire and install it in accordance with all applicable electrical codes.
The electrician may add as much as three ohms round trip resistance to the CT or up to 1.5 ohms per
wire. For reference, the following maximum lengths at 75° C by gauge are:
64 meters of 0.75 mm27-strand Cu = 1.5 ohms
85 meters of 1 mm27-strand Cu = 1.5 ohms
128 meters of 1.5 mm27-strand Cu = 1.5 ohms
213 meters of 2.5 mm27-strand Cu = 1.5 ohms
Resistance figures may not be appropriate for all geographies or installation conditions. A qualified
electrician must determine the wire gauge and type to obtain a maximum round trip resistance of three
ohms.
Select wire that is code type and rated for voltage and temperature for the specific application.
Mechanically protect the wires in a code type conduit or raceway. Use certified connectors for splices
and insulate splices from one another and from the raceway, conduit, or junction box, if metallic.
Buried wires must be certified for direct burial and follow the code for installation. Do not bury splices
unless in a certified junction box rated for the application, and use a certified moisture resistant
connection method.

Envoy-S Metered Multiphase Installation and Operation
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4. If Required, Install DRM Support and a Central
The multiphase Envoy-S Metered gateway supports DRM (Demand Response Management). If required
for your region, an electrician can install DRM support and add a central disconnect. The Envoy-S (ENV-S-
WM-230) has a pre-installed 15kΩ resistor that provides DRED bypass when DRED is not required.
NOTE: In systems where a central disconnect (contactor) is installed, you must use Installer
Toolkit to configure the meters as described in Step 8 before device discovery can complete.
To configure DRM support use the terminals shown:
5. Energise the Envoy-S
a. Close the terminal block door, and secure it with the screw.
b. Turn on the circuit feeding the Envoy-S.
c. All four LEDs flash amber during boot up. This typically takes 2 minutes. When boot up is
complete, the Device Communications LED flashes amber indicating that that devices are not
yet detected.
6. Launch Installer Toolkit and Start AP Mode
a. Launch the Installer Toolkit app and tap View Systems.
b. The Envoy’s AP (Access Point) Wi-Fi network allows you to connect your mobile device (smart
phone or tablet) to the Envoy-S. The AP Mode LED lights solid green when the network is
available.
-On the Envoy-S, if the AP Mode LED is not lit, press the AP Mode button.
-On your mobile device, go to Settings and join the Wi-Fi network “Envoy_nnnnnn” (where
“nnnnnn” represents the final six digits of the Envoy-S serial number).
DRM port
label
DRM port
DRED bypass

Envoy-S Metered Multiphase Installation and Operation
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7. Detect the Devices
Use one of the following methods to detect any Enphase Microinverters and/or AC Batteries.
NOTE: In systems where a central disconnect (contactor) is installed, you must use Installer
Toolkit to configure the meters as described in Step 8 before device discovery can complete.
Method A: Provision Devices with Installer Toolkit
Use the Installer Toolkit to configure the Envoy-S with the serial numbers of the installed Enphase
devices.
a. Select the system you are working with, or tap [+] to add a system.
b. If the serial number for the Envoy-S you are installing is not displayed on the System Overview
screen, tap the [+] next to the word “Envoys”. When the app displays the serial number of the
Envoy-S, tap it to add it to the system.
c. Following the on-screen instructions to create the arrays and scan the serial numbers from the
installation map.
d. Tap the Connect button. This provisions the scanned devices on the Envoy-S.
e. When prompted, confirm the number of Enphase devices installed and select a grid profile.
The Device Communications LED lights solid green if all of the provisioned devices are
communicating or solid amber if any devices are not communicating.
Method B: Discover Devices with Installer Toolkit
Use the Installer Toolkit mobile app to set the number of Enphase devices that the Envoy-S should search
for on the power line.
f. Tap Connect to an Envoy.
g. When prompted, enter the number of Enphase devices installed and select a grid profile.
h. When prompted to start a device scan, tap OK.
The Device Communications LED flashes green while scanning. It lights solid green when all of the
installed Enphase devices are communicating or solid amber if any are not communicating.
Method C: Discover Devices with the Envoy-S
If you are not using the Installer Toolkit mobile app, press the Device Scan button on the Envoy-S. With
this method, the Envoy searches the power line for 15 minutes, but does not know how many Enphase
devices it should search for.
The Device Communications LED flashes green for 15 minutes while scanning. At the end of the
scan, it lights solid green if at least one device was discovered or solid amber if no devices were
discovered (or if any discovered device stops communicating).
NOTE: If you are not using Installer Toolkit, you must log in to Enlighten and set the grid
profile for the system.
With Both Methods
If the Device Communications LED remains solid amber, see “Device Detection Issues” on page 34.

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8. Verify System Configuration
While still connected to Envoy-S with Installer Toolkit, check the Overview screen for the following:
a. Confirm that the expected number of devices are discovered and communicating.
b. On the Overview screen, check that the new profile is set on all the devices. This may take up to 5
minutes for a typical system.
c. Set up metering for the Envoy-S Metered (models ENV-S-WM-230 and ENV-S-WM1-230 only):
Tap the Meters button.
If there is a check next to Production Meter, the production meter is enabled. If a gear
is shown, you must enable the meter:
Tap Production Meter. If the meter mode is Multiphase, you must select the
number of Phases Metered. This is based on how your Envoy-S is wired. For
example, if the Envoy-S is wired for three phases, select three phases.
Follow the on-screen instructions to enable the Production Meter.
If you installed consumption metering CT(s), tap Consumption Meter to enable the meter.
If the meter mode is Multiphase, you must select the number of Phases Metered.
The available options will match or exceed the value selected for the Production
Meter.
Based on where you installed the consumption CT, indicate whether the circuit that
passes through the consumption CT includes:
oLoad with solar production (net) or
oLoad only (total or gross), for example, in the case of a line-side tap.
Follow the on-screen instructions to enable the Consumption Meter. If you change
the number of Phases Metered to exceed the number selected for the Production
Meter, the system increases the number for both meters and prompts you to
confirm.
Return to the Overview screen and verify the meter reading(s).
WARNING! If using consumption metering, be sure to set the meter type correctly. You
cannot change this setting once the meter is enabled.
If you used Installer Toolkit to detect devices, the Power Production LED lights solid green when all
expected devices are producing power. If you did not use Installer Toolkit, it lights solid green if all
communicating devices are producing power. It flashes green when devices are upgrading. Check
Installer Toolkit for production status details. If the Power Production LED remains solid amber, see
“Power Production Issues”on page 36.

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9. Connect to Enlighten
The Envoy-S requires a connection to the Internet for reporting to Enlighten. You can provide this
connection through an existing broadband router, other Wi-Fi access point, or by using the Enphase
Mobile Connect cellular modem.
WARNING!Risk of Equipment Damage. Do not remove power from the Envoy-S if the LEDs
are flashing green. This indicates that a software upgrade is in progress.
Connect to a broadband router using one of these methods, described in the following sections:
Method A: Integrated Wi-Fi
Method B: Enphase Mobile Connect (order CELLMODEM-02 separately)
Method C: Ethernet cable (not included, installer must provide). This method requires that you
use the ferrite bead included with the Envoy-S.
Method D: Power Line Communication Bridges [order EPLC-02 (EU), EPLC-03 (UK) or EPLC-04
(AU) separately]. This method requires that you use the ferrite bead included with the Envoy-S.
Method A: Integrated Wi-Fi
The Envoy-S integrated Wi-Fi operates at both 2.4GHz and 5GHz and supports several wireless security
protocols in addition to Wi-Fi WPS. These include WEP Open System, WEP Shared Key, WPA-PSK, WPA2-
PSK, WPA-EAP, and WPA2-EAP.
To use the Enphase integrated Wi-Fi, you need a wireless
router.
a. On the Envoy-S, verify that no Ethernet cable is
plugged into the RJ45 port.
b. If your router supports WPS, press and hold the WPS
button on the wireless router for a few seconds. On most routers, a WPS LED begins flashing.
c. If you are using the Installer Toolkit mobile app, tap the Network button, tap Wi-Fi, and find and
select your network. If the wireless router does not support WPS, you may be prompted to enter
a password.
If you are not using the Installer Toolkit mobile app, you can only connect using WPS. Initiate a
WPS connection by pressing and holding the AP Mode button for 5 seconds.
The Network Communications LED begins flashing green. Within three minutes the Network
Communications LED lights solid green, indicating a successful connection to the Internet and to
Enlighten. If the Network Communications LED remains off or lights solid amber, see “Internet
Connection Issues” on page 36.
Method B: Enphase Mobile Connect Modem
Order CELLMODEM-02 separately.
To install Enphase Mobile Connect:
a. Connect the antenna to the antenna connector (marked CELL) on the
modem.
b. Mount and connect the modem as described in the Enphase Mobile Connect
Installation Guide. If receiving power from the Envoy-S, the modem power LED lights.
Within three minutes the Envoy-S Network Communications LED lights solid green, indicating a
successful connection to the Internet and to Enlighten.