enphase Enphase Envoy-S Metered User manual

INSTALLATION AND OPERATION MANUAL
141-00031, Rev 01
Enphase Envoy-S

Envoy-S Installation and Operation
2016 Enphase Energy Inc. 141-00031 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.

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Table of Contents
SAFETY.....................................................................................................................................5
Read this First.................................................................................................................................. 5
Safety Instructions ........................................................................................................................... 5
The Enphase Envoy-S ...............................................................................................................6
How the Enphase Microinverter System Works.............................................................................. 6
Installation Planning and Preparation.........................................................................................7
Pre-installation Checks.................................................................................................................... 7
Select the Envoy-S Type to Install............................................................................................... 7
Download the Installer Toolkit App.............................................................................................. 8
Box Contents ............................................................................................................................... 8
Plan the Power Connection......................................................................................................... 8
Use a Phase Coupler for a Three-Phase Site............................................................................. 8
Plan the Internet Connection....................................................................................................... 9
Metering Considerations.............................................................................................................. 9
Required Items............................................................................................................................. 9
Optional Items.............................................................................................................................. 9
System Metering Options .......................................................................................................... 10
Create the Map and Install the PV Modules and 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
Provide Power for the Envoy-S Standard (ENV-S-WB-230-F, -G, and -I) ................................ 13
Provide Power for the Envoy-S Metered (ENV-S-WM1-230).................................................... 15
3. Install CTs for Metering (Model ENV-S-WM1-230 only)............................................................ 16
Install the CT for Production Metering....................................................................................... 16
Install the CT for Consumption Metering (optional)................................................................... 17
Extend Consumption CT Leads, If Needed............................................................................... 17
4. Energise the Envoy-S................................................................................................................ 17
5. Detect the Microinverters........................................................................................................... 18
Method A: Provision Microinverters with Installer Toolkit.......................................................... 18
Method B: Discover Microinverters with Installer Toolkit........................................................... 18
Method C: Discover Microinverters with the Envoy-S ............................................................... 18
With All Methods........................................................................................................................ 18
6. Verify System Configuration...................................................................................................... 19
7. Connect to Enlighten ................................................................................................................. 19
Method A: Integrated Wi-Fi........................................................................................................ 19
Method B: Enphase Mobile Connect Modem............................................................................ 20
Method C: Ethernet Cable......................................................................................................... 20
Method D: Power Line Communication Bridges........................................................................ 21
If the Internet Connection Fails.................................................................................................. 21
8. Send System Summary Report................................................................................................. 21
Activate Monitoring...................................................................................................................22
Method A: If the Envoy-S is Associated with a System in Installer Toolkit................................ 22
Method B: If the Envoy-S is NOT associated with a System in Installer Toolkit ....................... 22
View System Performance in Enlighten .................................................................................... 22
Envoy-S Operation...................................................................................................................23
Envoy-S Displays and Controls..................................................................................................... 23
Envoy-S LED States...................................................................................................................... 23
LED Behaviour at Initial Start Up................................................................................................... 24
Initial Communications Check ................................................................................................... 24
More about Microinverter Communications States.................................................................... 24
Initiate a New Scan for Microinverters........................................................................................... 24
Connecting to Envoy-S.............................................................................................................25
Connect Using the Installer Toolkit App ........................................................................................ 25

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Method A: Use the Site’s Wireless Router to Connect to the Envoy-S..................................... 25
Method B: Create a Wireless Access Point............................................................................... 25
Complete the Connection to Envoy-S with Installer Toolkit....................................................... 26
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
Microinverter Detection Issues ...................................................................................................... 34
Issue: Installer Toolkit Shows “Cross Domain Traffic Reported” ............................................... 34
Issue: Microinverter Communications LED is Solid Amber....................................................... 34
Issue: Installer Toolkit Detects Fewer Microinverters than Expected........................................ 34
Issue: No Microinverters are Reporting..................................................................................... 35
Issue: Installer Toolkit Indicates that Scanning is Inhibited....................................................... 35
Power Production Issues............................................................................................................... 35
Issue: Power Production LED is solid amber ............................................................................ 35
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.................................................................................................. 37
DHCP versus Static IP Addressing ........................................................................................... 37
MAC Filtering............................................................................................................................. 38
Firewall Settings......................................................................................................................... 38
Replacing an Envoy-S................................................................................................................... 39
Replacing an Envoy-S Standard (non-hardwired)..................................................................... 39
Replacing an Hardwired Envoy-S.............................................................................................. 40
Event Messages ............................................................................................................................ 42
Technical Data.........................................................................................................................48

Envoy-S Installation and Operation
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SAFETY
Read this First
Follow the instructions in this manual. These instructions are key to the installation and maintenance
of the Enphase Envoy-S Standard™ and the Enphase Envoy-S Metered™.
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 Customer Support 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.

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The Enphase Envoy-S
The Enphase Envoy-S is an integral component of the Enphase Microinverter System. It operates
between the Enphase Microinverters and the Enphase Enlighten™web-based monitoring and analysis
software. The Envoy-S monitors the microinverters that are connected to the PV modules. It collects
energy and performance data from the microinverters over on-site AC power lines, and it forwards that
data to Enlighten, via the Internet, for statistical reporting.
The Envoy-S Metered uses precision Current Transformers (CTs) to measure PV production
and home energy consumption.
The Envoy-S Standard offers microinverter PV production monitoring.
How the Enphase Microinverter System Works
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. This integrated system maximises energy harvest,
increases system reliability, and simplifies design, installation and management.
The Envoy-S operates as a gateway between the Enphase Microinverters and Enlighten. The Enphase
Enlighten web-based monitoring and analysis software analyses the data collected by each
communicating microinverter. Enlighten automatically detects any shortfall in energy production,
identifies possible causes, and suggests solutions. Enlighten constantly monitors every Enphase
Microinverter 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 even access Enlighten
on your mobile device and view current performance information wherever you are.

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Installation Planning and Preparation
Installation and operation of the Envoy-S require no specialised equipment or unique computer or
networking expertise. 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 microinverters using the site’s power lines.
After the Envoy-S is installed and the microinverters are scanned or provisioned, it maintains an internal
database of all known Enphase Microinverters at the site it manages. At regular intervals, the Envoy-S
polls each microinverter 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 that affect it or the microinverters.
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 microinverters through power lines at the site. The other "side" of the Envoy-S
communicates with Enlighten over the Internet.
Pre-installation Checks
Review the following pre-installation checks before you install the Envoy-S.
Select the Envoy-S Type to Install
The Envoy-S Metered uses precision Current Transformers (CTs) to measure PV production
(accuracy 2.5%) from the solar main supply switch and home energy consumption from the AC
mains.
The Envoy-S Standard offers microinverter PV production monitoring (accuracy +/- 5%).
Enlighten
Microinverters
Router
Envoy-S
POWER LINE
COMMUNICATIONS
NETWORK
COMMUNICATIONS
To Internet
Switchboard

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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. To download, 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 4.2 or later, or
An iOS device running iOS 7.0 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
AC power cord (included with ENV-S-WB-230-F, -G, and -I)
Two split core current transformers (CTs) for production and consumption metering (included
with ENV-S-WM1-230)
Length of DIN rail for mounting
Ferrite bead to attach to your Ethernet Cable, if used
Enphase Envoy-S Quick Install Guide
Plan the Power Connection
If installing the Envoy-S Standard, decide whether to power the Envoy-S using the included AC power
cord or by hardwiring the Envoy-S in an IP54-rated, or better enclosure. Use an appropriately rated
enclosure if hard-wiring indoors. Make sure that the site has either a standard AC socket available near
the AC switchboard in which the Envoy-S can be hardwired. Do not use a power board. If you use the
power cord in an enclosure, the socket must be appropriately rated.
Use a Phase Coupler for a Three-Phase Site
If you are installing the Envoy-S in a three-phase application, the power line communication signal must
be “coupled” between the three phases to allow the Envoy to communicate with all of the microinverters
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. Consult Enphase
support for compatible devices.
Enphase Installer
Toolkit mobile
app

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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
Metering Considerations
The Envoy-S Metered includes a production CT and a consumption CT. When installing CTs:
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.
To install the production CT, which measures power production through a connection to the solar supply
main switch:
Ensure there is sufficient space to install the production CT around Line (active) of the solar
supply main switch.
To install consumption CT, which measures energy consumption through a connection to the AC mains:
For net consumption metering, ensure there is sufficient space to install the CT around Line
(active) from the main feeds.
For total (gross) consumption metering, ensure there is sufficient space to install the CT
around the line that feed the consumption circuit.
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.
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) separately]
Ethernet cable (use 802.3, unshielded Cat5E or Cat6)

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System Metering Options
The Envoy-S monitors up to 600 Enphase Microinverters and is available with two reporting options.
Check that the model number is correct for your installation.
Envoy-S name and model
numbers (SKU)
Case
colour
Metering / reporting
Includes AC power
cord or CTs
Envoy-S Standard, single-phase
ENV-S-WB-230-F, -G, and -I
White
Microinverter PV production monitoring
(accuracy +/- 5%).
AC power cord
Envoy-S Metered, single-phase
ENV-S-WM1-230
Black
Integrated PV production and home
consumption metering (accuracy +/-
2.5%)
Two split-core CTs
NOTE: To install multiple Envoys at a single site, see our technical brief on commercial
design at enphase.com/support.
Create the Map and Install the PV Modules and Microinverters
Create the map and install the PV modules and microinverters. You will scan this map later using
Installer Toolkit and your mobile device. (See “Method A: Provision Microinverters with Installer Toolkit”
on page 18.)
NOTE: If needed, you can find an installation map at the back of any Enphase Microinverter
manual.
Create a paper installation map to record microinverter serial numbers and positions in the
array. Peel the removable serial number label from each microinverter 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.

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Installation Sequence
1. Choose a location
for the Envoy-S
2. Provide a power
connection
4. Energise the Envoy-S
7. Connect to Enlighten
8. Send summary report
6. Verify system configuration
5. Detect microinverters
3. Install CTs, if needed

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Installing the Envoy-S
To install the Envoy-S, perform the following steps and refer to these diagrams:
Envoy-S Standard (model numbers ENV-S-WB-230-F, -G, and -I)
Envoy-S Metered (model number ENV-S-WM1-230)
USB
ports
LEDs and buttons
AC input
Ethernet port
Terminal
block
USB
ports
LEDs and buttons
Ethernet port

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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 microinverter.
b. If you are installing the Envoy-S in a three-phase application, the power line communication
signal must be “coupled” between the three phases to allow the Envoy to communicate with all of
the microinverters 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.
c. Install the Envoy-S in a protected dry space (such as a garage, attic, basement, or other cool,
dry location) and, if the Envoy-S is hard-wired outdoors, you must also 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.
d. 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.
e. 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 is available in two configurations.
The Envoy-S Standard (ENV-S-WB-230-F, -G, and -I) includes an AC power cord.
The Envoy-S Metered (ENV-S-WM1-230)does not include an AC power cord, and you must
hard-wire it.
The following sections provide separate instructions for the two configurations.
Provide Power for the Envoy-S Standard (ENV-S-WB-230-F, -G, and -I)
Use one of the following methods to provide power to the Envoy-S Standard.
Method A: Plug the Envoy into a 230 VAC Socket
The Envoy-S Standard (ENV-S-WB-230-F, -G, and -I) includes an AC power cord.
WARNING: If the included power cord is missing or lost, you must use an equivalent power
cord. See “Wire / Power Requirements / Specifications”on page 48.
a. Locate an AC socket that is near the switchboard. If
outdoors, the socket must be appropriately rated.
b. Plug the AC power cord into the AC inlet on the
Envoy-S.
c. Plug the other end of the power cord into a dedicated
230 VAC socket (not a power board).
WARNING! Do not plug the Envoy-S into a
power board, surge protector, or uninterruptable
power supply (UPS). The surge suppression or
filtering within these devices impedes power line communication performance. Also, if
possible, do not plug a power board into the same AC socket that the Envoy-S is using. The
surge suppression or filtering components of a power board may still interfere with
communications if they are near the Envoy-S.
AC inlet
Shutter

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Method B: Wire in an Enclosure
Though the Envoy-S Standard (ENV-S-WB-230-F, -G, and -I) includes an AC power cord, you may hard-
wire it instead. 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. Use a single-pole 20 A maximum circuit breaker for the supply wiring.
b. Make sure supply wiring is 1.5mm2copper rated at 75 degrees C.
c. Locate the screw on the left side of the terminal block door, and loosen it with a screwdriver to
unlock the door.
d. Open the terminal block door and move the shutter to the left. Wire the line and neutral
conductors as shown in the diagram. Tighten terminal block screws to 0.56 Nm.
- Connect Line (active) to A
- Connect Neutral to N

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Provide Power for the Envoy-S Metered (ENV-S-WM1-230)
The Envoy-S Metered (ENV-S-WM1-230) uses terminal blocks for power 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. Use a single-pole 20 A maximum circuit breaker for the supply wiring.
b. Make sure supply wiring is 1.5mm2copper rated at 75 degrees C or better.
c. Locate the screw on the left side of the terminal block door, and loosen it with a screwdriver to
unlock the door.
d. Flip open the terminal block door and wire the line and neutral conductors as shown in the
diagram. Tighten terminal block screws to 0.56 Nm.
- Connect Line (active) to A
- Connect Neutral to N

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3. Install CTs for Metering (Model ENV-S-WM1-230 only)
The Envoy-S Metered (ENV-S-WM1-230) uses terminal blocks for metering connections. Install one CT
for production metering and one CT for consumption metering as described in this section. You must use
a protected route in conduit for the CT wires to the Envoy-S. If you need to extend the leads (up to 213
meters), see “Extend Consumption CT Leads, If Needed” on page 17.
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 Envoy-S or the microinverters 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 the CT for Production Metering
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. Clamp the CT on Line (active) of the solar production circuit with the arrow pointing towards the
load.
c. Connect the white wire to the “IA•” terminal.
d. Connect the blue wire to the “IA” terminal.
e. Tighten the terminal block screws to 0.56 Nm.

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Install the CT for Consumption Metering (optional)
Install one split-core CT to provide consumption metering. Create a protected route with conduit for the
CT wires to the Envoy-S.
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. 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.
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. Connect the white wire to “IA•” and the blue wire to “IA”. 󳮁
c. Clamp the CT on the solar supply Line (active). When the consumption CT is on the line (active)
conductor, the arrow should point toward the load. Unlatch the CT and place Line (active) in
through the opening. Latch the CT and listen for the click as it closes.
NOTE: Only run active conductors through the CT. The CT can monitor multiple active
conductors.
d. Tighten the terminal block screws to 0.56 Nm.
Extend Consumption CT Leads, If Needed
If needed, an electrician may extend the leads of the consumption CT using the following guidance:
WARNING! To extend the CT leads, the electrician must use appropriately rated, 0.75mm2
to 1.5mm2, 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 consumption 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 insulated 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.
4. 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 to 3 minutes. When boot up is
complete, the Microinverter Communications LED flashes amber indicating that that
microinverters are not yet detected.

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5. Detect the Microinverters
Use one of the following methods to detect microinverters.
Method A: Provision Microinverters with Installer Toolkit
Use the Installer Toolkit mobile app to configure the Envoy-S with the serial numbers of the installed
microinverters.
a. Launch Installer Toolkit and tap View Systems.
b. Select the system you are working with, or tap [+] to add a system.
c. Connect to the Envoy-S with your mobile device as described in the side note.
d. Return to Installer Toolkit. 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.
e. Create the arrays and scan the serial numbers from the
installation map as instructed by the Installer Toolkit Operation
Manual at enphase.com/support.
f. Tap the Connect button. This provisions the scanned
microinverters on the Envoy-S.
g. When prompted, confirm the number of microinverters that you
installed.
h. The Microinverter 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 Microinverters with Installer Toolkit
a. Use the Installer Toolkit mobile app to set the number of
microinverters the Envoy-S should search for on the power line.
For more information, see the Installer Toolkit Operation Manual
at enphase.com/support.
b. Connect to the Envoy-S with your mobile device as described in
the side note.
c. Launch Installer Toolkit and tap Connect to an Envoy.
d. When prompted, enter the number of microinverters that you
installed.
e. When prompted to start a device scan, tap OK.
The Microinverter Communications LED flashes green while scanning. It lights solid green when all
of the microinverters you installed are communicating or solid amber if any devices are not
communicating.
Method C: Discover Microinverters with the Envoy-S
If you are not using the Installer Toolkit 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 microinverters
it should discover.
The Microinverter Communications LED flashes green for 15 minutes while scanning. At the end of
the scan, it lights solid green if at least one microinverter was discovered or solid amber if no
microinverters were discovered (or if any discovered microinverter stops communicating).
With All Methods
If the Microinverter Communications LED remains solid, see “Microinverter Detection Issues” on page
34.
NOTE: Connecting to Envoy-S
with a Mobile Device (smart
phone or tablet):
The Envoy’s AP (Access Point)
Wi-Fi network allows you to
connect your mobile device 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 serial number).

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6. 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. Tap the Grid Profile row on the Overview screen to select and apply a grid profile to the
microinverters. On the Overview screen, check that the new profile is set on all the
microinverters. This may take up to 5 minutes.
c. Set up metering for the Envoy-S Metered (model ENV-S-WM1-230 only):
Tap the Meters button and check that Production Metering is enabled .
If you installed consumption metering CTs, tap the >to the right of Consumption Meter.
If the circuit that passes through the consumption CTs includes load with solar
production, leave the type set to Net.
If the circuit that passes through the consumption CTs includes load only, change
the type to Total (Gross).
Tap Enable Consumption Meter.
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.
NOTES:
Net metering considers the generation of the PV system and the household’s
consumption and calculates the net outcome.
Total or gross metering measures the entire output of your system separate from
your electricity consumption.
If you used Installer Toolkit to detect microinverters, the Power Production LED lights solid green when
all expected microinverters are producing power. If you did not use Installer Toolkit, it lights solid green if
all communicating microinverters are producing power. It flashes green when microinverters are
upgrading. Check Installer Toolkit for production status details. If the Power Production LED remains
solid amber, see “Issue: Installer Toolkit Indicates that Scanning is Inhibited ”on page 35.
7. 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 at the installation site, 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.

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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 then tap
your network from the list of available networks. 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 the modem as described in the Enphase Mobile Connect
Installation Guide.
c. Connect the micro-USB cable to the modem and connect the other end of
the cable to the Envoy-S. 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.
NOTE: With Mobile Connect, the Envoy initially reports to Enlighten every five minutes for 12
hours or until the Envoy-S detects the expected number of microinverters, which is based on
the number entered in Total Number of PV Modules in Enlighten. After that, the Envoy
uses low bandwidth reporting mode. Low bandwidth mode reports 15-minute interval
readings and event data to Enlighten four times a day rather than every 15 minutes as with
other connection methods.
Method C: Ethernet Cable
To use this method, you need an Ethernet cable and a broadband router. In the box with the Envoy-S is
a ferrite bead. You must attach this ferrite bead to your Ethernet cable to ensure there is no
communication interference between the Envoy-S and other devices. To install the cable and ferrite
bead:
a. Select a Cat5E or Cat6 Ethernet cable with unshielded twisted pairs (UTP).
b. Place the bead on the new cable, near one end, and close the latch.
c. Plug the cable end with the ferrite into the Envoy-S Ethernet port.
d. Secure a cable tie on the cable on each side of the ferrite bead.
e. Tighten an additional cable tie around the ferrite bead.
f. Trim any cable tie excess.
g. Plug the other end of the Ethernet cable into the network.
Within two minutes the Network Communications LED lights solid green, indicating a successful
connection to the Internet and to Enlighten.