enphase Envoy Communications Gateway Technical data

I NS TA L L A TI O N A N D O P E R A TI O N MA NU A L
Envoy™ Communications Gateway
141-00014, Rev 03
Envoy Installation and Operation
Corporate Headquarters Contact Information
Enphase Energy Inc.
1420 N. McDowell Blvd.
Petaluma, CA 94954
USA
Phone: +1 707-763-4784
http://www.enphase.com
info@enphaseenergy.com
Contact
Enphase Energy SAS
Hub Business 2
BP 128
69125 Lyon Aéroport Saint Exupéry – France
Tel : +33 (0)4 74 98 29 56
Fax : +33 (0)4 74 98 38 15
http://www.enphase.com/fr
sas@enphaseenergy.com
Informazioni di contatto
Enphase Energy Srl
Via Volta, 98
20832 Desio (MB) - Italia
+39 0362 308854
+39 0362 331718
http://www.enphase.com/it
informazioni@enphaseenergy.com
support.italy@enphaseenergy.com
Contact
Enphase Energy UK LTD
Fairbourne Drive, Atterbury
Milton Keynes, MK10 9RG
United Kingdom
Phone: +44 (0) 1908 828 928
http://www.enphase.com/uk
info@enphaseenergy.com
Other Information
For third-party license information, refer to www.enphase.com/licenses.
Product information is subject to change without notice. All trademarks are recognised as the property of
their respective owners.
Copyright © 2012 Enphase Energy. All rights reserved.
2
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Table of Contents
Important Information .................................................................................................................................... 4
Read this First ................................................................................................................................................. 4
Safety Instructions ........................................................................................................................................... 4
The Enphase Envoy Communications Gateway .......................................................................................... 5
Other Elements in the Enphase System .......................................................................................................... 6
How the Envoy Communications Gateway Works ........................................................................................... 6
Envoy Installation .......................................................................................................................................... 7
Planning and Preparation ................................................................................................................................ 7
Preinstallation Checks ................................................................................................................................. 7
Installation Flow ............................................................................................................................................... 8
Install the Envoy .............................................................................................................................................. 9
1. Add Serial Number Label to Map .......................................................................................................... 10
2. Register the Envoy ................................................................................................................................ 10
3. Find a Location for the Envoy ................................................................................................................ 10
4. Connect Ethernet and Power Cables .................................................................................................... 10
5. Connect Power Line Communication Bridges (Optional) ...................................................................... 11
6. Select Language ................................................................................................................................... 11
7. Check the Envoy’s Progress ................................................................................................................. 12
8. Wall Mount the Envoy (Optional) ........................................................................................................... 13
9. Configure the Grid Profile ...................................................................................................................... 14
10. Build the Virtual Array .......................................................................................................................... 18
11. View System Performance in Enlighten............................................................................................... 18
Envoy Operation ......................................................................................................................................... 19
First Scan for Microinverters .......................................................................................................................... 19
LCD Screen Display at Initial Start Up ........................................................................................................... 20
Initial Communications Check ................................................................................................................... 20
Subsequent Start Up ................................................................................................................................. 20
Normal Operation .......................................................................................................................................... 21
Using the Envoy LCD Menu .......................................................................................................................... 21
Initiating a Scan for New Microinverters .................................................................................................... 23
Performing a Communications Check ....................................................................................................... 23
Viewing the Grid Configuration .................................................................................................................. 24
Enabling a Connection to Enphase ........................................................................................................... 26
Disabling a Connection to Enphase .......................................................................................................... 26
Selecting a New Locale (Change Language Display) ............................................................................... 27
How the Envoy Works with Enlighten ............................................................................................................ 27
Networking and Firewall Info ..................................................................................................................... 28
Using Enlighten to Check Envoy Status .................................................................................................... 28
Troubleshooting .......................................................................................................................................... 29
Power Line Communication Troubleshooting ................................................................................................ 29
Issue: The Microinverter Count is Lower than the Number of Installed Units ............................................ 29
Issue: Envoy Displays Fewer than Three Bars .......................................................................................... 29
Issue: Envoy Displays Zero Bars ............................................................................................................... 30
Local Area Networking Troubleshooting ........................................................................................................ 30
Issue: IP Address Problems ...................................................................................................................... 30
Issue: LCD Screen Displays “-Web” .......................................................................................................... 30
Issue: LCD Screen Displays “Envoy Failure +Web or -Web” .................................................................... 31
Issue: The Envoy has Good Signal Strength but is Too Far from the Router ............................................ 31
Replacing an Envoy ....................................................................................................................................... 31
Envoy Local Interface ................................................................................................................................. 32
Connecting to the Envoy through the Site’s LAN ....................................................................................... 32
Directly Connecting to the Envoy without a Broadband Router ................................................................. 32
Home Screen ................................................................................................................................................. 33
Production Screen ......................................................................................................................................... 34
Inventory Screen............................................................................................................................................ 34
Administration Screen.................................................................................................................................... 35
Administration Screen Tasks ......................................................................................................................... 35
Change or View the Grid Profile ................................................................................................................ 36
Set Up Device Scan Control ...................................................................................................................... 41
Set the Time Zone (optional) ..................................................................................................................... 42
Other Admin Tasks .................................................................................................................................... 42
Event Messages ............................................................................................................................................ 43
Technical Data ............................................................................................................................................ 49
3
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Important Information
Read this First

Follow the instructions in this manual. These instructions are key to the installation and
maintenance of the Enphase Envoy Communications Gateway (Envoy™).

To ensure the safe installation and operation of the Envoy, note the following safety
symbols that appear throughout this document to indicate dangerous conditions and
important safety instructions.
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
4

Perform all electrical installations in accordance with all local electrical standards.

Do not attempt to repair the Envoy; it contains no user-serviceable parts. Tampering with or
opening the Envoy will void the warranty. If the Envoy fails, please contact Enphase
Customer Support for assistance.

Before installing or using the Envoy, please read all instructions and cautionary markings in
the technical description and on the Envoy.
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
The Enphase Envoy Communications Gateway
The Envoy is an integral component of the Enphase Energy Microinverter system. It operates between
the Enphase Microinverters and the Enphase Enlighten™ web-based monitoring and analysis software.
The Envoy functions as a gateway and monitors the microinverters that are connected to the PV
modules. The Envoy collects energy and performance data from the microinverters over on-site AC
power lines. It then forwards that data to Enlighten, via the Internet, for statistical reporting.
The three key elements of an Enphase system are the:

Enphase Microinverter

Enphase Envoy Communications Gateway

Enphase Enlighten™ web-based monitoring and analysis software
This integrated system maximises energy harvest, increases system reliability, and simplifies design,
installation and management. The following diagram shows the Envoy in the system.
5
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Other Elements in the Enphase System
The Enphase Microinverter is a fully integrated device that converts the DC output of the PV module into
grid-compliant AC power. In addition to performing the DC to AC conversion, it maximises the PV
modules' 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 Enphase Enlighten web-based monitoring and analysis software analyzes the per-module 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 and is essential for monitoring and troubleshooting.
How the Envoy Communications Gateway Works
Installation and operation of the Envoy require no specialised equipment or unique computer or
networking expertise. To the Local Area Network (LAN), the Envoy is just another host on the network,
much like a personal computer. The Envoy simply connects to the on-site router for communications with
the Enphase Enlighten monitoring and analysis website. The Envoy communicates with the individual
microinverters using the existing power lines in the residence or business.
As part of the commissioning process, installers must use the Envoy to configure the microinverters
with an appropriate grid profile setting. Otherwise, the microinverters will not begin producing power.
After the Envoy is installed and completes its initial scan, it maintains an internal database of all known
Enphase Microinverters at the site it manages. At regular intervals, the Envoy polls each microinverter for
its energy data. Using the site’s broadband router, the Envoy then forwards that information to Enlighten.
The Envoy also reports any error conditions that affect it or the microinverters. You can view both energy
data and error conditions in Enlighten.
The Envoy incorporates power line and Internet communications functions. As shown in the diagram, one
side of the Envoy communicates with the microinverters through power lines at the site. The other side of
the Envoy communicates with the Internet using a standard Ethernet/network cable plugged into your
broadband router.
6
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Envoy Installation
Planning and Preparation
Review the following preinstallation checks before you install the Envoy.
Preinstallation Checks
Before installing the Envoy, make sure that the site meets the following minimum requirements:
 Standard AC outlet is available
 Laptop or other computer is available for set up
If you plan to use the Enlighten web-based monitoring and analysis software, additional requirements are:
 Always-on broadband Internet connection
 Broadband router with spare Ethernet port
 Up-to-date web browser to view Enlighten. Supported browsers are Internet Explorer 8 or
higher, Firefox 3.6 or higher, Chrome 5 or higher, and Safari 4 or higher. Enlighten requires
Adobe Flash Player 10 or higher.
Check the Envoy shipping box for the following items:
 Envoy Communications Gateway
 Ethernet cable
 AC power cord
 Power line communication bridges (included with some models)
 Envoy Communications Gateway Quick Install Guide
If you plan to wall-mount the Envoy, you need two #8 (4.166 mm diameter) screws and a screwdriver.
7
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Installation Flow
8
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Install the Envoy
To install the Envoy, perform the following steps while referring to the following diagram.
BEST PRACTICE: When powered up and connected for the first time, the Envoy may
retrieve an automatic upgrade from Enphase. Because this upgrade may take up to 15
minutes, connect the Envoy first at the site (connect to both AC power and the broadband
router) so that it performs the upgrade well before the solar module installation is complete.
WARNING! Do not remove power from the Envoy if the LCD displays:
“Upgrading. . . Do Not Unplug.”
9
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
1. Add Serial Number Label to Map
a. Remove the Envoy’s removable serial number label as shown in the diagram.
b. Attach the serial number label to the microinverter installation map, or make note of it for
registration in the next step.
2. Register the Envoy
Register the Envoy at the beginning of the PV installation.
a. Use your previously issued username and password to log in to in Enlighten. If you haven’t
registered, go to www.enphase.com and click Enlighten Login to register.
b. If you haven’t already started an activation, click Add a New System at the Installer
Dashboard. If you have already registered the site, find the system under Installations in
Progress, and register the Envoy serial number in the space provided online.
3. Find a Location for the Envoy
Enphase recommends that the Envoy be placed as close to the AC mains as possible. This ensures that
the Envoy receives the strongest possible signal from each microinverter. The Envoy must be indoors
and can be placed on a table or it can be wall mounted. For wall mounting instructions, see “Wall
Mounting” on page 13.
a. Locate an AC outlet close to the AC mains.
b. Place the Envoy so that its AC cord can reach this outlet.
4. Connect Ethernet and Power Cables
The Envoy must obtain a DHCP (Dynamic Host Configuration Protocol) IP address and have a path to
the Internet. The Envoy will request this IP address from the broadband router during the power-up
sequence. Two small green LEDs on the Ethernet port indicate Internet link and activity. One LED will be
solid green, and the other will blink every few seconds.
a. Plug the Ethernet cable into the Ethernet port on the Envoy.
b. Plug the other end of the cable into a spare port on the broadband router.
NOTE: Next to the Ethernet port on the Envoy, there are two USB ports. You cannot use the
USB ports for a wired or a wireless Ethernet connection.
c. Plug the AC power cord into the AC input on the Envoy.
d. Plug the other end of the power cord into a dedicated AC outlet (not a power strip). For best
results, the outlet should be near the AC mains.
WARNING! Do not remove power from the Envoy if the LCD displays:
“Upgrading. . . Do Not Unplug.”
WARNING! Do not plug the Envoy into a power strip, surge protector, or uninterruptable
power supply (UPS). The surge suppression or filtering from a power strip or other protective
device can substantially diminish communication performance. Also, if possible, do not plug
a power strip into the same outlet that the Envoy is using. The surge suppression or filtering
components of a power strip may still interfere with communications if they are near the
Envoy.
10
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
5. Connect Power Line Communication Bridges (Optional)
If the Envoy needs to be located away from the router, at a distance where an Ethernet cable is not
practical, use power line communication bridges or purchase a wireless Ethernet bridge. Bridges allow
the Envoy to communicate with the broadband router without the need for additional Ethernet cabling. To
install the bridges:
WARNING! Do not remove power from the Envoy if the LCD displays:
“Upgrading. . . Do Not Unplug.”
a. Plug one of the bridges into the same AC outlet that the Envoy is using.
b. Connect one end of the Ethernet cable
to the Ethernet port on the Envoy.
c. Connect the other end of that Ethernet
cable to the bridge.
d. Plug the other bridge into an AC outlet
near the broadband router.
e. Connect one end of a second Ethernet
cable to the second bridge.
f.
Connect the other end of the Ethernet
cable to the broadband router.
g. Reapply power to the Envoy to force it
to refresh its IP address.
6. Select Language
After the Envoy starts up it will request that
you set the Language.

English
The Envoy LCD panel will scroll
through the available language
settings, and will continue to scroll until
you make a selection. When you see
the setting you need, press the Menu button
and hold it down for two seconds.
Français
Deutsch
Italiano
11
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
7. Check the Envoy’s Progress
After installing your Envoy, you can check its progress:
a. Check the Internet connection. Look for the “+Web” indication. If it still shows
“-Web” 15 minutes after connecting to the broadband router, see “Local Area Networking
Troubleshooting” on page 30.
NOTE: Power production shows as 0W
and 0kWh until the microinverters are
discovered and monitoring begins.
192.168.2.140
0W
0kWh
+Web
25
b. Check the device count (shown as “25” in the illustration). An automatic device scan will
begin to detect microinverters.
Level:
Devices:
[ ]
25
c. Check the power line communications.
The number of “Level” bars on the Envoy
LCD Level/Devices screen should be
three or more. (The illustration shows three bars.) If there are fewer than three bars, see
“Power Line Communication Troubleshooting” on page 29.
d. Soon, the Envoy will display “Priority Scan is Active” on the LCD screen. Check that the
Envoy LCD shows a complete device count after about 30 minutes. If it does not, see “Power
Line Communication Troubleshooting” on page 29.
e. When all microinverters at the site have been discovered, use the Envoy Device Scan
Control menu to stop the device scan:

Press and hold the Envoy menu button (on the right side of the Envoy).

Release it when the LCD window displays “Disable Device Scan”.
NOTE: For sites with neighbouring Enphase systems, a device scan should not be allowed to
run overnight because it may discover neighbouring microinverters when they first power-up
in the morning. Always stop the device scan in the afternoon, before leaving the site.
f.
12
Refer to “LCD Screen Display” on page 20 for more information.
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
8. Wall Mount the Envoy (Optional)
NOTE: Before mounting the Envoy, it is best to perform a Communications check, as
described on page 23, to find the best location for your Envoy.
After you have positioned your Envoy for optimal communications and it is has begun to detect devices,
you can mount the Envoy on a wall. To do this:
a. Use two drywall screws or wall anchors (not included) to affix the Envoy to the wall, mounted
at the dimensions shown. You will need two #8 (4.17 mm or 0.16 in. diameter); maximum
screw head diameter is 8.9mm (0.35 in.).
b. Slide the Envoy onto the mounting screws, aligning the Envoy screw holes with the screws
installed in step a.
13
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
9. Configure the Grid Profile
The following steps describe how to configure the grid profile. After all of the microinverters at the site are
detected, you can apply the grid profile.
Each Grid Profile contains a set of trip points. Trip points are input voltage or frequency values that
trigger the microinverters to shut down. These trip points vary from region to region.
If you need to change the grid profile subsequent to this initial procedure, follow the steps in “Change or
View the Grid Profile” on page 36
NOTE: Enphase Microinverters will not begin exporting power until the Envoy Communications
Gateway is installed and has detected all of the microinverters at the site. In addition, the grid
profile must be configured and the Envoy must have propagated these settings to the
microinverters.
a. Open the Internet browser application on a computer that is connected to the same local
network as the Envoy.
b. In the browser address window, enter the IP address shown in the LCD screen of the Envoy.
Once the browser has successfully connected with the Envoy, the System Overview screen is displayed
in the browser window.
c. From the Language menu, select your preferred language.
d. Click on Inventory and verify that all installed microinverters are detected.
e. Click Administration to access the Administration menu.
The default log in credentials for the Administration menu are:
Username: admin
Password: admin
Click to
select
Language
Click to access
the
Administration
menu.
14
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
f.
The System Administration screen appears.
From the Admin menu, select Device Grid Configuration.
Click to select
Device Grid
Configuration
The Grid Configuration screen appears. This screen allows a licensed solar professional to
select and apply the appropriate Grid Profile for the site.
g. Select a Country regulatory specification.
h. Select a Grid profile.
Click to select a
Country
regulatory
specification
Click to select
a Grid Profile
Click Apply
Grid Profile
i.
Click Apply Grid Profile.
The Apply Profile screen appears. This screen allows you to generate a report to confirm that
the microinverters have been set with the updated grid profile.
15
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
j.
Click View Device Profile Report.
The Grid Profile Report screen appears.
Click to View
Grid Profile
Report
k. Enter the site information in the window provided.
Enter site
information
here.
l.
16
Use your browser to send this report to your printer or to save it to a file. After printing or
saving the file, you can send it to the local regulatory agency to confirm the grid profile and
trip point settings.
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
The report will look like the following example.
17
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
10. Build the Virtual Array
When the system is energised and the Envoy detects at least one microinverter, the installer can begin to
create the virtual array in Enlighten from the installation map they created.
a. Log in to Enlighten.
b. Use Array Builder to create
the virtual array in
Enlighten.
c. Use your installation map
as your reference.
To see the Array Builder demo, go to
http://enphase.com/support/videos/.
Once the virtual array is built, Enlighten
displays a graphic representation of the
PV system. It also shows detailed
current and historical performance
information.
11. View System Performance in Enlighten
Once the array is built and the system is activated, the installer and the system owner can log in to
Enlighten to view site data.
a. If you have not done so already, log in to Enlighten to view system data.
b. Refer to “How the Envoy Works with Enlighten” on page 27 for more information.
18
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Envoy Operation
First Scan for Microinverters
A newly installed Envoy automatically performs an initial scan to discover all of the microinverters that
are installed and powered up at the site. This initial scan continues to search for new microinverters for
eight hours from initial start up of the Envoy. This one-time scan is not repeated automatically. During the
scan, you will notice some values increasing on the Envoy display.
NOTE: If the Envoy was not factory built with software release 3.2, the initial scan will run for
seven days. The initial scan time was reduced from seven days to eight hours with release
3.2. If the Envoy upgrades to release 3.2, after an initial scan has begun, the initial scan
duration will still be seven days.
NOTE: If the eight-hour scan expires before installation of microinverters is complete, a new
scan must be initiated. The steps for initiating a new device scan are described on page 23
of this manual.
WARNING: Stop the scan once all of the devices are detected (see page 12). For sites with
neighbouring Enphase systems, a new device scan should not be allowed to run overnight
because it may discover neighbouring microinverters when they first power-up in the
morning.
The Envoy identifies each device by its unique serial number. If a microinverter is added or replaced at
the site, you must initiate a new scan so that the Envoy can discover the new microinverter. The steps for
initiating a new device scan are described on page 23 of this manual.
After the Envoy has detected at least one new device, it will automatically enter Priority Scan mode. The
LCD screen will display the following, where “nnnn” represents the number of microinverters (devices)
detected.
Priority Scan is
Active.
Devs: nnnn
When the Envoy does not detect a device during a polling interval (usually 5 minutes), it will exit Priority
Scan mode. If, subsequently, the Envoy detects another device, it will return to Priority Scan mode. It will
remain in this mode until it again completes an interval where no new devices are detected.
NOTE: While Priority Scan is active, power production, power line communication level, and
grid profile information screens continue to display on the Envoy LCD screen.
19
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
LCD Screen Display at Initial Start Up
When the Envoy is started up for the first time, it goes
through the initial boot sequence. During this initial
boot sequence, the Envoy LCD screen display
progresses as shown:

[e] Enphase Energy
Booting [||||||]
{LANGUAGE SELECTION}
Initial Communications Check
The last two screens in the initial sequence alternate
until the Communications Check ends, after 20
minutes. The Envoy normally displays
"-Web" for two to three minutes after the first start up.
It then sends the first report to Enlighten. When
Enlighten responds, the Envoy displays “+Web”.
Subsequent Start Up
After a power outage or Envoy shut down, the Envoy is
ready to work just five minutes after reapplying power.
You will know the Envoy has completed booting and has
started normal operation when it displays both an IP
address and the “+Web” status indication in the LCD
screen. The normal, post installation boot sequence is
similar to the initial start up, although the “Initializing Data”
screen is not repeated.
Initializing Data
2012/06/06 16:21:20
Starting
R3.2.0
2012/06/06 16:21:20
169.254.120.1
-Web
2407W
783kWh
25
Communications check
Searching Devices
192.168.2.140
+Web
2407W
783kWh
25
Level:
Devices:
20
Copyright  2012 Enphase Energy
[
]
25
141-00014 Rev 03
Envoy Installation and Operation
Normal Operation
Once the Envoy completes a scan, it begins or resumes normal operation. At this point, the indicators in
the LCD screen show current values for your system. This is the home screen:
192.168.2.140 +Web
2407W
783kWh
25
It may be a few minutes before energy data appears or increases on the home screen after starting up
the Envoy or initiating a scan. Information shown during normal operation includes:

Local IP address, for example: 192.168.2.140 (your actual local IP address will be different).
The Envoy will attempt to get a dynamically assigned DHCP (Dynamic Host Configuration
Protocol) IP address during power up sequence. The Envoy uses the DHCP IP address as a
path to the Internet. If 169.254.120.1 is shown, the Envoy has not yet acquired a dynamic IP.
Refer to “Troubleshooting” on page 29, if this address continues to display.

Web connection indication: +Web. The web status indicates whether the Envoy is connected
to Enlighten.

Indication of the present power-production, in watts: (n)W (where n is a number)

Indication of the life time kilowatt hours reported to this Envoy: (n)kWh (where n is a number)

Indication of the number of online microinverters producing power and reporting in to the
Envoy: (n) (where n is a number). The number of microinverters displayed will be zero at
night.
After the Envoy establishes an IP address and the web connection, the Envoy periodically contacts an
NTP (Network Time Protocol) server so that it can maintain an accurate local time.
Using the Envoy LCD Menu
Use the Envoy Menu button
located on the right side of
the Envoy to access the
Envoy LCD menu.
1. Press and hold
this button. After
two seconds the
Envoy menu
appears in the
Envoy’s LCD
screen.
Menu
Button
2. Continue holding
the Menu button.
Menu items will
appear in the following order:
21
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
3. To select a menu item, release the Menu
button when the desired menu item
appears. The menu continues to cycle as
long as you are pressing the Menu
button. The Exit Menu option returns to
the normal (default) display, usually the
Home screen. See the following sections
for detailed procedures.
Exit Menu
Enable
Device Scan
Disable
Device Scan
Enable
Communication Check
Disable
Communication Check
View Grid
Configuration
Get New IP Address
Enable Connection
To Enphase
Disable Connection
To Enphase
Select New Locale
22
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Initiating a Scan for New Microinverters
If you add additional microinverters to an existing system or replace a microinverter, you will need to run
a scan to detect the new devices. To initiate a scan after you add new microinverters to an existing
Enphase system perform the following steps.
Alternatively, you can initiate a scan through the administration page when connected to the Envoy local
interface with a computer or via Enlighten (refer to “Using Enlighten to Check Envoy Status” on page 28).
1. Press and hold the Envoy Menu button. After two seconds the Envoy menu appears.
2. Continue holding the Menu button. When the LCD screen displays “Enable Device Scan”,
release the Menu button.
Enable
Device Scan
The LCD screen then reads:
Device scan active
for 00d:00h:30m
The Envoy begins a 30-minute scan (if a longer scan is not already in progress) to identify all
of the microinverters deployed at the site.
3. Use your previously issued username and password to check for the new microinverter in
Enlighten. If you do not have a link to Enlighten, go to www.enphase.com and click Enlighten
Login. From here you can register (if not already done) and view data on a per-microinverter
basis (and, hence, a per-PV module basis).
4. To disable or cancel a scan, press and hold the Envoy Menu button for two seconds to view
the Envoy menu.
5. When the LCD screen displays: “Disable Device Scan”, release the Menu button.
Disable
Device Scan
Performing a Communications Check
If you are unsure of where the Envoy should be located for maximum performance, you can install the
Envoy in various locations and check signal strength at each location. Normally, a communications check
starts automatically after an Envoy restart. Alternatively, you can initiate a communications check with
the Envoy Menu button or through the Administration page when connected to the Envoy local interface
with a computer. You can also use Enlighten (see “Using Enlighten to Check Envoy Status” on page 28).
NOTE: Device scans and communications checks can only be done during daylight hours
when the microinverters are active (that is, powered by the PV modules).
To use the Envoy Menu button to initiate a communications check:
1. Press and hold the Menu button on the right side of the Envoy to bring up the Envoy menu on
the LCD screen.
23
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
2.
When the LCD screen displays “Enable Communication Check”, release the Menu button.
Enable
Communication Check
The LCD screen then reads:
Comm check enabled
for 20min
The Envoy begins a 20-minute communications check to assess the signal strength between
the Envoy and the microinverters detected at the site. Until the Envoy begins detecting
microinverters, the display reads:
Communications check
Searching Devices
When the Envoy begins detecting microinverters, the display shows power line
communication Level and Device count:
Level:
Devices:
[ ]
25
To the right of the word “Level”, you’ll see brackets enclosing zero to five bars. The example
above shows three bars.
NOTE: Until microinverters are detected, the Level indicator shows no bars.
Signal strength is acceptable if three to five bars are displayed and all devices are accounted
for. One to two bars may not be sufficient for consistent communication.
3. If, after 15 minutes, fewer than three bars are displayed, refer to “Power Line Communication
Troubleshooting” on page 29.
The “Devices” counter displays the number of microinverters detected and will increase until
all microinverters are detected. Ultimately, the number of microinverters detected should
match the number of installed microinverters.
4. After 20 minutes, the communications check stops. To stop the communications check before
it times out, press and hold the menu button to activate the Envoy menu. When “Disable
Communication Check” is displayed, release the menu button.
Viewing the Grid Configuration
To view the grid configuration (trip points profile) for the site, do the following.
NOTE: You cannot change the grid profile using this menu. To change this profile, and for
more information on this feature, see “Change or View the Grid Profile” on page 36.
1. Press and hold the Envoy Menu button. After two seconds the Envoy menu appears.
2. Continue holding the Menu button. When the LCD screen displays View Grid Configuration,
release the Menu button.
24
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
View Grid
Configuration
The LCD screen then reads:
Gathering Grid
Configuration Data
If a grid profile has not been applied, the following screen is displayed:
This indicates that the microinverters are not yet configured with a grid profile.
No Grid
Config. Applied
3. If needed, configure these settings as described in “Change or View the Grid Profile” on page
36.
If a grid profile has been applied, the following screens are displayed. You can press the
menu button at any time to exit this process.
(n) total devices
Number of microinverters detected.
(n)unsettable devices
(n)devices are set
with (local spec)
(n)are propagating
with (local spec)
Number of microinverters that cannot be
set with a grid profile.
Number of microinverters that are set
with a grid profile and the name of the
specification being used.
Number of microinverters that are in the
process of being set and the name of the
specification being used.
(n)devices
have failed
Number of devices that failed to be set
with a grid profile.
Checking grid config
Select to exit
Updating grid configuration data.
4. Press the menu button to exit this menu.
25
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Enabling a Connection to Enphase
The Enable Connection to Enphase menu item creates a secure connection to Enphase allowing
Enphase personnel to troubleshoot the system remotely.
To open a connection to Enphase:
1. Press and hold the Envoy Menu button. After two seconds the Envoy menu appears.
2. Continue holding the Menu button. When the LCD screen displays “Enable Connection to
Enphase”, release the Menu button.
Enable Connection
To Enphase
The LCD screen now reads:
Enabling Connection
Once the connection is open, the LCD will return to the default display.
Disabling a Connection to Enphase
The Disable Connection to Enphase menu item closes the secure connection to Enphase.
To close a connection to Enphase:
1. Press and hold the Envoy Menu button. After two seconds the Envoy menu appears.
2. Continue holding the Menu button. When the LCD screen displays “Disable Connection to
Enphase”, release the Menu button.
Disable Connection
To Enphase
The LCD screen now reads:
Disabling Connection
Once the connection is closed, the LCD will return to the default display.
26
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Selecting a New Locale (Change Language Display)
You can set the LCD to display in English, French, Italian, or German. To do this:
1. Press and hold the Envoy Menu button. After two seconds you will enter the Envoy menu.
2. Continue holding the Menu button. When the LCD screen displays “Select New Locale”,
release the Menu button.
Select New Locale
3. The Envoy LCD panel will scroll through the available locale settings. When you see the
setting you need, press the Menu button and hold for two seconds.
English
Français
Deutsch
Italiano
How the Envoy Works with Enlighten
The Envoy operates between the Enphase Microinverters and the Enphase Enlighten web-based
monitoring software. The Envoy collects energy and performance data from the microinverters and
forwards that data to Enlighten, via the Internet, for reporting.
Once you have registered the system and successfully installed the Envoy, Enphase will set up an
account for the site owner. You can then use Array Builder, a tool available to installers, to build the
virtual array. You will need to use the installation map you created during installation as a reference
during this task.
NOTE: To see the Array Builder demo, go to http://enphase.com/support/videos/.
If you do not already have an account, please go to www.enphase.com for more information.
When you complete the registration and installation, Enphase sends account information to the site
owner so that they can log in to the Enlighten website and view system performance.
Enlighten provides a wide range of information on system and PV module performance. A graphical
representation of the PV array provides “at a glance” information on the status of each PV module. You
can also access more detailed information, including current and lifetime performance metrics. You can
even access Enlighten on your mobile device and view current performance information wherever you
are.
27
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Networking and Firewall Info
The Envoy communicates with Enlighten by initiating outbound TCP (Transmission Control Protocol)
connections to Enphase over HTTPS (Hypertext Transfer Protocol over Secure Socket Layer)
(TCP:443). The Envoy uses NTP (Network Time Protocol) (UDP:123) to periodically synchronise
time/date with an external pool of NTP servers. You do not need to open any inbound firewall ports for
normal operation.
NOTE: The Envoy automatically reports system performance data to Enphase upon
connection to the Internet. Please consult the Enphase privacy policy at
http://www.enphase.com/privacy/ to learn more about Enphase's use of this data.
Using Enlighten to Check Envoy Status
To check status of Enphase equipment, do the following:
1. Log on to Enlighten to view the array. Click Inverters.
A list of equipment appears that including the Envoy(s) all of the microinverters that the
Envoy has detected. The column on the far right lists the status of each microinverter.
2. To view status information for the Envoy, click the Envoy serial number.
Click to
Check Signal
Click to
Rescan
3. From here you can choose to Check Signal Strength or Rescan for Devices as needed.
28
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Troubleshooting
The following sections describe possible problems and solutions. For information on system status and
event messages, see “Event Messages” on page 43. For more extensive information, refer to
Troubleshooting an Enphase Installation at http://www.enphase.com/downloads.
Power Line Communication Troubleshooting
At power-up, the Envoy performs a “Communications check”. After a few minutes, it
will display a number of bars in the LCD screen. This
value, from zero to five, indicates the signal strength of
the power line communication between the Envoy and
the microinverters.
Level:
Devices:
[ ]
25
Any time the Envoy is restarted, it automatically performs a
communications check. However, there may be times when you need to manually initiate a check. To do
this:

Press and hold the Envoy menu button. Release it when the LCD window displays Enable
Communication Check. The check will run for 20 minutes.
 Note the number of bars shown in the Communications check.
Signal strength is acceptable if three to five bars are displayed and all devices are accounted for. One to
two bars may not be sufficient for consistent communication. Zero bars means that the Envoy needs to
be relocated, or it means that one or more electrical appliances are causing interference. Troubleshoot
power line communication issues as described in the following.
Issue: The Microinverter Count is Lower than the Number of Installed Units
This may indicate that the Envoy is not done scanning/discovering the entire array. Alternatively, it may
indicate that the Envoy is having difficulty communicating over the power lines. It could also be a result of
low light levels and the PV module voltage being too low for the microinverter to power up. To
troubleshoot the issue:
 Make sure that the Envoy is plugged directly into the wall and not into a power strip or surge
protector.
 Relocate your Envoy as close to the electrical service panel (AC mains) as possible. This
ensures that the Envoy receives the strongest possible signal from each microinverter.
 Try unplugging any other device that may be sharing the outlet with the Envoy. Or, as an
alternative, plug the Envoy into a circuit that supports fewer electronic appliances.
Appliances sharing a receptacle with the Envoy may interfere with power line
communication.
 If this problem occurs when light levels are low, try again during daylight hours.
Issue: Envoy Displays Fewer than Three Bars
Follow the procedure (previous) for “Issue: The Microinverter Count is Lower than the Number of
Installed Units”.
29
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Issue: Envoy Displays Zero Bars
The following conditions may exist.
Is there a phase imbalance?
 Ask the electrician to measure the conductors and neutral line to verify that the phases are
balanced. If the phases are not balanced, electricians must recheck the wiring.
Is the system energised? PV modules power microinverters, PV modules provide power only
during daylight hours, and microinverters communicate only when powered.
 Run another scan during daylight hours.
 Check that the circuit breaker(s) for the PV array are in the “ON” position. For the Envoy to
communicate with the microinverters, the PV circuit breakers must be in the “ON” position in
the electrical AC mains.
 Verify that the PV modules are connected to the microinverters.
The Envoy is plugged into a circuit on the primary AC mains, but the PV circuit breakers are on
a downstream subpanel: The primary AC mains is full and doesn’t have additional capacity to
add circuit breakers.
 Add a subpanel with a small subset of circuit breakers. In this case, it is best to add an
additional 5-Amp circuit breaker and then run an outlet off that subpanel. Plug the Envoy into
that AC outlet, so that it can be close to the PV circuit breaker.
Local Area Networking Troubleshooting
To the Local Area Network (LAN), the Envoy is just another host on the network, much like a personal
computer. Enphase offers technical support at support@enphaseenergy.com for Envoy issues, but
Enphase's Support responsibility does not extend to the premises network or LAN.
Issue: IP Address Problems
If the IP address displayed on the Envoy’s LCD screen is 169.254.120.1, or if the IP address does not
match the DHCP subnet on the internal network, this means that the Envoy was unsuccessful in
obtaining a DHCP lease from the router.
 Check network connectivity to the router or other DHCP server. You may also wish to
contact your Internet Service Provider or refer to your router documentation for help.
 Check that you are using a broadband router and not a switch or a hub. Many hubs and
switches cannot provide a DHCP lease and may not allow the Envoy to connect to the web.
 Use the Envoy menu button to “Get New IP Address”, and then allow 30 to 60 seconds for
the new IP address to appear on the Envoy LCD screen.
 Two small green LEDs on the Ethernet port indicate Internet link and activity. One LED will
be solid green, and the other will blink green every few seconds. If the LEDs are not both on
or blinking, try using a new Ethernet (CAT5) cable in place of the existing cable.
 Unplug all units in the chain, applying power again in this order: 1) modem, 2) router, and 3)
Envoy. Allow a few minutes for the IP address to be reassigned.
Issue: LCD Screen Displays “-Web”
This means that the Envoy has no connection to the Enlighten website. To troubleshoot the issue:
 Check network connectivity to the router. You may also wish to contact your Internet Service
Provider or refer to your router documentation for assistance.
 Unplug all units in the chain, applying power again in this order: 1) modem, 2) router, and 3)
Envoy. Allow a few minutes for the IP address to be reassigned.
 Allow a few minutes longer. If the Envoy has recently received a valid IP address, it will likely
display “+Web” momentarily.
30
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Issue: LCD Screen Displays “Envoy Failure +Web or -Web”
This message displays after the Envoy has tried unsuccessfully three times to initialise.
 Unplug the Envoy from the AC outlet and plug it in once again. Leave it in place for at least
15 minutes.
 If it continues to display Envoy Failure or if it never moves beyond the Initialization stage,
contact Enphase Customer Support (support@enphaseenergy.com).
Issue: The Envoy has Good Signal Strength but is Too Far from the Router

In this case, you may need to use power line communication bridges or a wireless Ethernet
bridge.
Replacing an Envoy
If problems remain after following the troubleshooting steps above, contact Enphase at
support@enphaseenergy.com. If Customer Support authorises an Envoy replacement (RMA), follow the
steps below.
1. Disconnect the Ethernet cable and power cord from the old Envoy.
2. When the replacement Envoy arrives, connect it to the Ethernet cable and power cord.
3. Verify that the new Envoy powers up. The Envoy LCD may display "Upgrading... Do Not
Unplug" for up to 15 minutes. Wait for this to complete before proceeding.
4. Verify that the new Envoy indicates “+Web” within 15 minutes. If not, follow the network
troubleshooting steps above.
5. Verify that the new Envoy start discovering microinverters within 20 minutes of starting up. If
necessary, use the LCD menu (or the Enlighten Envoy page) to start a new device scan
during daylight hours. (See Using the Envoy LCD Menu on page 21.)
6. After all microinverters have been discovered, stop the new device scan using the LCD
menu. (See Using the Envoy LCD Menu on page 21.)
7. Assess the power line communications by running a Communication Check from the LCD
menu (or from the Enlighten Envoy page) during daylight hours. (See Using the Envoy LCD
Menu on page 21.) If fewer than three bars are shown, relocate the Envoy for better power
line communications.
8. Ship the old Envoy to Enphase using the supplied RMA shipping label.
31
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Envoy Local Interface
The Envoy relays data to Enlighten, and connection to the Enphase Enlighten web-based monitoring and
analysis software requires an Internet connection. However, if there is no broadband router at the
installation site, you can communicate directly with the Envoy using the Ethernet port and a personal
computer with a web browser.
Connecting to the Envoy through the Site’s LAN
The following steps describe how to access the Envoy data through the site’s LAN (local area network).
1. Open an Internet browser application on a computer connected to the same LAN as the
Envoy.
2. In the browser address window, enter the IP address displayed in the LCD screen of the
Envoy.
Once the browser has successfully connected with the Envoy, the home screen is displayed in the
browser window.
Directly Connecting to the Envoy without a Broadband Router
The following steps describe how to access the Envoy data through the local connection in the absence
of a broadband router.
1. Connect one end of the Ethernet cable supplied with the Envoy to the Ethernet port on the
Envoy.
2. Connect the other end of the Ethernet cable to the Ethernet port of the computer.
3. Open an Internet browser application on the computer.
4. In the browser address window, enter the IP address displayed in the LCD screen of the
Envoy.
NOTE: If you fail to make a connection at this point, you can manually configure your subnet
to 169.254.120.2 and subnet mask to 255.255.0.0. If this does not correct the problem,
contact Enphase Customer Support (mailto:support@enphaseenergy.com).
Once the browser has successfully connected with the Envoy, the home screen is displayed in the
browser window.
32
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Home Screen
The home screen provides a system overview and shows the current status of the microinverters that
have been identified by this Envoy. From this screen, you can access other screens in the interface.
33
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Production Screen
To view system energy harvest statistics for your system, click Production from the Envoy home screen
to navigate to the production screen.
Inventory Screen
To view a listing of the devices in your system, click Inventory from any screen to navigate to the
inventory screen.
34
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Administration Screen
The Administration screen of the Envoy local interface contains several configurable options. Click
Administration to access this menu.
NOTE: For Envoy performance reasons, Enphase does not recommend giving the Envoy a
publicly accessible IP address. However, if you must place the Envoy on a public-facing IP
address, Enphase recommends that you change the admin password to disallow
unauthorised modification to your Envoy. (This situation is rare, since consumer-grade
routers normally provide the Envoy with an internal network IP address that is not publicly
accessible.)
For reference, your private/internal IP address space will be in the 192.168.x.x,
172.16(-31).x.x, 10.x.x.x or 169.254.x.x range. If you are unsure if your Envoy is on the
public Internet, contact your network administrator or Internet Service Provider.
The default login credentials for the Administration menu are:
 Username: admin
 Password: admin
Administration Screen Tasks
The following sections describe several Administration Screen tasks. Perform these tasks only when
needed. Administration tasks include:




35
Manage the Grid Profile
Set Up Device Scan Control
Set Time Zone
Other Admin Tasks
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Change or View the Grid Profile
Many Enphase Microinverters have field adjustable voltage and frequency trip points. Trip points are input
voltage or frequency values that trigger the microinverters to shut down when the values are exceeded. If
local regulations require adjustments to these trip points, the installer can set up the system to use an
alternate Grid Profile (set of trip points).
NOTE: Only an authorised installer, following the requirements of the local regulatory
authority, is allowed to make Grid Profile adjustments.
NOTE: Grid profile changes are applied only after a microinverter is detected.
In some regions and in some situations, microinverter trip points must be adjusted to account for high grid
voltage or for local conditions. Grid profile management tasks include:

Adjust system trip points for frequency and voltage if required by local utilities

Reset trip points to default values

View or verify current grid profile
 Generate a report for confirmation of site settings to the utility or other authority
To change a grid profile, you need a “Change Token”. Change tokens are issued on a per Envoy serial
number basis. Contact Enphase Customer Support for your Grid Profile Change Token as directed on
the screen.
1. From the System Overview screen, click on Inventory and verify that all installed
microinverters are detected.
2. Click Administration to access the Administration menu.
The default log in credentials for the Administration menu are:
 Username: admin
 Password: admin
The System Administration screen appears.
Click to select Device
Grid Configuration
36
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
3. From the Admin menu, select Device Grid Configuration.
The Device Grid Configuration screen appears. This screen allows a licensed solar
professional to select and apply the appropriate trip points for the solar installation.
Click to select a
Country
regulatory
specification
Click to select a
Grid profile
Enter your token
here.
Click to Apply
Grid Profile
4. Select a Country regulatory specification.
5. Select a Grid profile that is applicable for your region.
6. Make note of the Envoy serial number and the authorization number on the screen. You will
need this information in the following steps.
7. Click the link to the Enlighten website. (If you do not already have an account, click Enlighten
Login at the Enlighten website to register.) Note that this link will not appear if the Envoy
shows “-Web”.
NOTE: If the Envoy displays “-Web”, see “Local Area Networking Troubleshooting” on page
30.
37
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
8. Once logged in at the Enlighten website, locate the Grid Profile Change Token widget. If you
don’t see this widget add it now:

Click Add a widget.

Select Grid Profile Change Token.
9. Enter the Envoy serial number.
Copy this
token.
10. Enter the authorization number from the Envoy Interface.
11. Click Get Token.
12. Copy the token.
13. Paste or enter the token in the Grid Profile screen.
14. Click Apply Grid Profile.
This propagates the settings to the microinverters.
38
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
The Apply Profile screen appears. This screen allows you to generate a report to confirm that
the microinverters have been set with an updated grid profile.
15. Click View Device Profile Report.
Click to View
Grid Profile
Report
The Device Profile Report screen appears
16. Enter the site information in the window provided.
Enter site
information
here.
Site Name
123 Avenue
Town, State/Province
Country
17. Use your browser to send this report to your printer or to save it to a file. After printing or
saving the file, you can send it to the local regulatory agency to verify the trip point settings.
39
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
The report will look like the following example.
40
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Set Up Device Scan Control
The “controlled” device scan differs from other Envoy device scans in that it allows control over scan
period, scanning method, and number of devices. When first installed, the Envoy initiates an eight-hour
scan. This initial scan is the only scan needed for most systems.
NOTE: At sites with more than 100 microinverters, we recommend using the controlled
device scan presented here and specifying the total number of devices to be discovered.
This will speed up the discovery process.
To run a controlled device scan to detect new or previously undetected microinverters:
1. From the Admin menu, choose Device Scan Control.
The Device Scan Control screen appears.
2. Enter a Scan Duration in days:hours:minutes (e.g., 0:00:60 to indicate zero days, zero hours,
and 60 minutes). The scan duration will depend on many factors, such as number of devices
to be detected and quality of power line communication. You may want to start with a onehour scan and increase the duration as needed.
3. Although optional, it is best practice to enter a value for Total Devices. Enter a value in this field.
The Envoy will stop scanning once it has detected the given number of devices.
NOTE: The Total Devices option can be used in conjunction with the Priority Duration option
to help discover any last few microinverters.
4. Enter a Priority Duration (optional) in days:hours:minutes (e.g., 0:00:20 to indicate zero days,
zero hours, and 20 minutes). If you enter a value in this field, the Envoy will make scanning its
sole activity for the period specified.
NOTE: The Priority Duration option should only be used in limited situations, e.g., at large
sites or sites experiencing problems discovering devices with the normal scan.
5. Click Start Scan to complete this task. The LCD screen will display the following, where
“nnnn” represents the number of microinverters (devices) detected.
Priority Scan is
Active. Devs: nnnn
41
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Set the Time Zone (optional)
Ordinarily, the Envoy obtains the time zone setting from Enlighten. If you do not have an Internet
connection for the Envoy, you may want to set the local time zone. This step is not necessary if the
Envoy is reporting to Enlighten. To set the time zone:
1. From the Admin menu, choose Date, Time, Time Zone.
2.
Under Time Zone Setting, select a time zone from the Select Time Zone drop down menu.
3. Click Update timezone setting to complete this task.
Other Admin Tasks
Other Admin menu options not described in this manual are not required for normal system operation
and should only be performed when recommended by Enphase.
42
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Event Messages
The following table lists messages that the Envoy can produce to indicate certain conditions. These
messages appear on screen when your computer is connected to the Envoy local interface.
Where message is displayed:
Home Screen Inventory Screen
Description
AC Frequency
Changing Too
Fast
Recommended Action: No action is required unless the condition
persists.
AC Frequency
Changing Too Fast
Description: AC frequency is the frequency at which voltage varies on the
electricity network. The microinverter reports that this value is changing
more rapidly than allowed. Frequency Changing Too Fast events are
usually transient and self-correcting by the electricity network.
AC Frequency
Out Of Range
AC Frequency Out Of
Range
Recommended Action: This condition should correct itself. No action is
required.
Description: The microinverter reports that the frequency coming from the
electricity network is either too low or too high as specified by applicable
regional standards.
AC frequency is the frequency at which voltage varies on the electricity
network. Frequency Out of Range events are usually transient and selfcorrecting by the electricity network.
When the microinverter detects an out of frequency condition, it must
remain offline until the electricity network has been within acceptable limits
continuously for a short period of time (seconds to minutes, varies by
region). If, during that time, the utility again exceeds or falls short of
acceptable limits, the timer must restart and the microinverter may not
begin producing power for an additional short period following the last outof-bounds condition.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
ACMonitorError
ACMonitorError
Recommended Action: No action is required unless the condition
persists.
Description: The microinverter is temporarily unable perform power
conversion.
If the condition repeats or persists: Contact your installer to arrange for
the installation of a replacement microinverter.
AC Voltage
Average High
AC Voltage Average
High
Recommended Action: No action is required unless the condition
persists.
Description: The microinverter reports that the average AC voltage
coming from the utility over the past 10 minutes was too high for the
configured grid profile.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
43
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Where message is displayed:
Home Screen Inventory Screen
Description
AC Voltage Out
Of Range
Recommended Action: This condition should correct itself. No action is
required.
AC Voltage Out Of
Range
Description: The microinverter reports that the AC voltage coming from
the utility is either too low or too high as specified by applicable regional
standards.
When a microinverter detects the voltage out of range condition, it does
not produce power (per regulation) until the utility voltage returns within
acceptable limits for several minutes (time varies by region). If during that
time the utility voltage again goes beyond acceptable limits, the timer
restarts.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
Applying grid
profile xx from
regulatory
specification yy
Description: The Envoy has started a change to the grid profile for the
microinverters. This process may take a few minutes. No action is
required.
xx = grid profile name
yy = Regional specification name.
Bad Flash
Image
Bad Flash Image
Description: The microinverter is not producing power due to a software
problem.
Recommended Action: Contact Enphase Energy customer support.
Commanded
Reset
Commanded Reset
Recommended Action: No action is required; it will automatically resume
normal operation momentarily.
Description: The microinverter was reset, either following a successful
software download or by user command.
Control Request
Recommended Action: No action is required.
Description: The Envoy has received a control request made via the
Envoy interface (Administration > Device Conditions and Controls page) or
via Enlighten. This uncommon condition will occur only during isolated
troubleshooting procedures by Enphase personnel.
Critical
Temperature
Critical Temperature
Recommended Action: This condition should correct itself. No action is
required.
Description: This rare condition occurs if the microinverter reports an
internal temperature that exceeds its rated range. It reacts by producing
less power to reduce internal temperature. Once the internal temperature
of the microinverter is once again within normal limits, it will resume full
power production and this error message will clear.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
DC Resistance
Low
DC Resistance Low
Recommended Action: No action is required unless the condition
persists.
Description: A sensor in the microinverter measures the resistance
between the positive and negative PV inputs to ground. If either resistance
drops below a threshold, the microinverter raises this condition. This may
indicate issues due to moisture, overload, defective circuit, live wires
making contact with ground wire, or other conditions.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
44
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Where message is displayed:
Home Screen Inventory Screen
DC Voltage Too
High
DC Voltage Too High
Description
Recommended Action: Ask your installer to check that the PV module
and microinverter are compatible. It may be that the PV module generates
a higher voltage than is recommended for the microinverter. Your installer
may refer to the Module Compatibility List for more information at
http://www.enphase.com/downloads/.
Description: The microinverter reports that DC input voltage from the PV
module is too high.
If the condition persists: If the PV module is compatible and the
condition persists, contact your installer or refer to the Troubleshooting
Guide at http://www.enphase.com/downloads/.
DC Voltage Too
Low
DC Voltage Too Low
Recommended Action: This is usually a normal condition during hours of
low light and at dawn and dusk.
Description: The microinverter reports that DC input voltage from the PV
module is too low. If this condition does not clear during hours of full
daylight, the microinverters may be heavily shaded or covered by snow.
If the condition persists: If this event occurs during full daylight or if the
condition persists, contact your installer or refer to the Troubleshooting
Guide at http://www.enphase.com/downloads/.
If this event occurs and clears daily or often during hours of full daylight,
check that the PV module and microinverter are compatible. Refer to the
Module Compatibility List for more information at
http://www.enphase.com/downloads/.
Download to
module begun
Description: The Envoy has started a software upgrade to the indicated
microinverter.
Recommended Action: This process may take a few minutes. No action
is required.
Download to
module ended
Description: The Envoy has successfully delivered a software upgrade to
a microinverter.
Recommended Action: No action is required.
Download to
module failed
Description: The Envoy was unable to successfully deliver a software
upgrade to a microinverter.
Recommended Action: No action is required; the Envoy will repeat the
attempt.
Envoy Failure
Recommended Action: Unplug the Envoy from the AC outlet and plug it
in once again. Leave it plugged in and in place for at least 15 minutes.
Description: This message displays after the Envoy has tried
unsuccessfully three times to start up.
This condition does not affect your system’s ability to produce power.
When the connection is restored, the Envoy will catch up with the
transmission of any/all energy data it has stored.
If the condition persists: If the Envoy continues to display Gateway (or
Envoy) Failure or if it never moves beyond the Initialization stage, contact
your installer or refer to the Troubleshooting Guide at
http://www.enphase.com/downloads/.
Filesystem
integrity audit
failed
45
Description: The Envoy file system integrity audit has failed.
Recommended Action: For assistance, contact Enphase Energy
customer support.
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Where message is displayed:
Home Screen Inventory Screen
Description
GridProfileIncompatible
Recommended Action: Ask your installer to use the Envoy Interface to
select a grid profile that is compatible with the installed microinverters.
GridProfileIncompatible
Description: This message displays when the selected grid profile is
incompatible with microinverter hardware.
This condition does not affect your system’s ability to produce power, and
when the connection is restored, the Envoy will catch up with the
transmission of any/all energy data it has stored.
If the condition persists: Contact your installer or refer to “Change or
View the Grid Profile” on page 36.
Grid Gone
Grid Gone
Recommended Action: In most cases no action is required. If there is a
power outage in your area and the system has stopped production. Solar
production will resume when the utility restores power to your area. Verify
that the circuit breaker(s) for the PV array are ON at the AC mains. If all
breaker(s) are on, the condition should clear itself.
Description: The microinverter detects no power coming from the local
utility. Enphase microinverters are “utility interactive” and require a
connection to the utility.
If the condition persists: If Grid Gone events persist, contact your
installer or refer to the Troubleshooting Guide at
http://www.enphase.com/downloads/.
Grid Instability
Grid Instability
Description: The microinverter is not producing power due to one or more
of these conditions: AC Frequency Out Of Range, AC Voltage Out Of
Range, or Grid Gone. Note that Grid Instability will remain for about five
minutes after the underlying conditions clear. No power is produced during
this time.
Recommended Action: No action is required unless the condition
persists. If it persists, contact Enphase Energy customer support.
Grid Offset Hi
Grid Offset Hi
Recommended Action: No action is required unless the condition
persists.
Description: The average current to the grid is too high for the configured
grid profile.
When the microinverter is operating normally, no DC current is injected
into the grid. If the DC current is too high, this may indicate an issue with
the microinverter.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
Grid Offset Low
Grid Offset Low
Recommended Action: No action is required unless the condition
persists.
Description: The average current to the grid is too low for the configured
grid profile.
When the microinverter is operating normally, no DC current is injected
into the grid. If the DC current is too low (negative), this may indicate an
issue with the microinverter.
If the condition persists: Contact your installer or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
Grid profile
application
completed
HardwareError
46
Description: The Envoy has completed a change to the grid profile for the
microinverters. No action is required.
HardwareError
Recommended Action: Contact your installer to arrange for the
installation of a replacement microinverter.
Description: A hardware failure has occurred that prevents power
conversion.
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Where message is displayed:
Home Screen Inventory Screen
Module added
Description
Description: The Envoy has detected and is now associated to a new
microinverter.
No action is required.
Microinverter
failed to report
Failed to report
Recommended Action: You can ignore occasional instances of this error.
Communications will likely recover on the next reporting cycle.
If communications do not recover immediately, make sure that the Envoy
is plugged in very near to the AC mains. Also, if other devices are sharing
the outlet with the Envoy, remove those devices from the outlet to improve
communication signal strength.
If the Enphase Envoy was recently relocated or if new devices or
appliances were added to the circuit, it is possible that the new situation is
not suitable for power line communication. The Envoy may need to be
relocated to improve signal strength and reduce interfering noise on the
power lines.
To determine the quality of the Envoy’s location for communication, please
run a Communications check by holding down the Envoy’s menu button
until the LCD display reads “Enable Communication Check” and then
release the menu button. The Envoy will then broadcast a signal to the
microinverters. Within 5 minutes, a “Comm Level” indication of 0 to 5 bars
will display on the Envoy LCD display. The Envoy requires a minimum of 3
bars to communicate effectively with the microinverters.
Description: The Envoy reporting this condition is unable to communicate
with the microinverters over the power lines.
If the condition persists: See “Power Line Communication
Troubleshooting” on page 29, or contact your installer, or refer to the
Troubleshooting Guide at http://www.enphase.com/downloads/.
Microinverter
grid
configuration
failed after 5
attempts,
retrying
Microinverter
grid
configuration
failure cleared
after xx
attempts
Module
Sleeping
No Grid Profile
Description: The attempt to change the grid profile for the microinverters
has failed after five tries. The Envoy will continue to attempt to change the
grid profile.
Recommended Action: No action is required.
Description: A failed attempt to change the grid profile for the
microinverters has cleared. The grid profile was successfully applied.
xx = number of attempts
Recommended Action: No action is required.
Sleeping
Description: The microinverter is off for the night.
Recommended Action: No action is required.
No Grid Profile
Recommended Action: Ask the installer to use the Envoy Gateway
interface to select a grid profile for this system. For more information, refer
to “Manage Grid Profile” on page 36
Description: The Envoy has not been set up with a grid profile for the
microinverters.
Over
Temperature
Over Temperature
Description: The microinverter is too hot and is not producing power. This
very rare condition usually clears without intervention.
Recommended Action: No action is required unless the condition
persists. If it persists, contact Enphase Energy customer support.
Power
generation off
by command
Power generation off
by command
Description: The microinverter is not producing power by user command.
This uncommon condition will occur only during isolated troubleshooting
procedures by Enphase personnel.
Recommended Action: No action is required.
47
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Where message is displayed:
Home Screen Inventory Screen
Power On Reset
Power On Reset
Description
Description: The microinverter has powered on after having both AC and
DC disconnected.
Recommended Action: No action is required.
Shutdown
Description: The Envoy has been powered down (unplugged from AC
power).
Recommended Action: Restore AC power to the Envoy.
Startup
Description: The Envoy has been powered back up (plugged back in to
AC power).
Recommended Action: No action is required.
Transient Grid
Profile
Transient Grid Profile
Recommended Action: No action is required. This condition will clear
once the grid profile test is complete.
Description: This system is currently in test mode.
48
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Technical Data
Communications Interface
Power line
Enphase proprietary
Ethernet
10/100 auto-sensing, auto-negotiation
USB (two ports)
USB 2.0 interface, auto-sensing, auto-negotiation
Monitoring capacity
Model number (SKU) ENV-230 monitors up to 500
Enphase Microinverters.
Power Requirements
AC outlet
230VAC, 50Hz
Power consumption
2.5 watts typical, 7 watts maximum
Mechanical Data
Dimensions (WxHxD)
222.5 mm x 112mm x 43.2mm
Weight
340g
Ambient temperature range
-40˚C to +65˚C
Cooling
Natural convection – no fans
Enclosure environmental rating
Indoor
Features
Standard warranty term
1 year
Compliance
EN 60950-1, EN 55022 Class B, EN 55024,
EN 50065-1, EN 50065-2-2, EN 61000-3-2,
EN 61000-3-3
Meter accuracy
Envoy metering is qualified as +/- 5% or better.
49
Copyright  2012 Enphase Energy
141-00014 Rev 03
Envoy Installation and Operation
Corporate Headquarters Contact Information
Enphase Energy Inc.
1420 N. McDowell Blvd.
Petaluma, CA 94954
USA
Phone: +1 707-763-4784
http://www.enphase.com
info@enphaseenergy.com
Contact
Enphase Energy SAS
Hub Business 2
BP 128
69125 Lyon Aéroport Saint Exupéry – France
Tel : +33 (0)4 74 98 29 56
Fax : +33 (0)4 74 98 38 15
http://www.enphase.com/fr
sas@enphaseenergy.com
Informazioni di contatto
Enphase Energy Srl
Via Volta, 98
20832 Desio (MB) - Italia
+39 0362 308854
+39 0362 331718
http://www.enphase.com/it
informazioni@enphaseenergy.com
support.italy@enphaseenergy.com
Contact
Enphase Energy UK LTD
Fairbourne Drive, Atterbury
Milton Keynes, MK10 9RG
United Kingdom
Phone: +44 (0) 1908 828 928
http://www.enphase.com/uk
info@enphaseenergy.com