PIKA X7602 Installation manual

M00010-17
Operation Manual
Pika Islanding Inverter
X7602/X11402
Part of the Pika Energy Island™

Islanding Inverter
Serial Number:
RCP Number:

1Islanding Inverter Operation Manual M00010-17
We are committed to quality and constant improvement. All specications and descriptions
contained in this document are veried to be accurate at the time of printing. However, we reserve
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© 2017 Pika Energy, Inc. All rights reserved.
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Pika Energy, Inc. This material may not be modied, reproduced or copied, in whole or in part,
without the prior written permission of Pika Energy, Inc. and its licensors. Additional information
is available upon request.

2 Islanding Inverter Operation Manual M00010-17
Table of Contents
Section 1: Introduction 4
About This Manual 4
Symbols used in this Manual 4
About Pika Islanding Inverters: X7602/X11402 5
Section 2: Safety Specications 6
General Warnings 6
Safety Shutdown 7
Section 3: Operational Modes Overview 8
Grid Tie 9
Clean Backup 9
Priority Backup 10
Self Supply 10
Self Supply Setpoints 11
Sell 12
Zero Export 12
Section 4: Operation and User Interface 13
The Home Screen 14
Selecting Operational Modes 14
Device Pages 16
Enabling and Disabling Devices 16
Mod. Settings Menu 18
LED Indicators 20
REbus Status LED 20
Inverter LED 20
Safety Shutdown LED 21
Internet LED 21
Section 5: Ethernet Conguration 22
Setup 22
Successful Connection 24
Ethernet Troubleshooting 24
Section 6: Serial Number and Registration 26
Scannable QR code for device registration 27
Section 7: Other External Communications 28
REbus Beacon 28

3Islanding Inverter Operation Manual M00010-17
Table of Contents
Section 8: Inverter Device Settings 28
Section 9: Service, Maintenance, and Troubleshooting 29
Service 29
Maintenance 29
Recovery From an Error State 29
Technical Support Information 29
Section 10: Specications 30
Quick Reference 30
Detailed Ratings 31
Notes 32

4 Islanding Inverter Operation Manual M00010-17
About This Manual
Section 1: Introduction
About This Manual
This operation manual provides instructions and recommendations for the use and operation
of the Pika Grid Supporting Utility Interactive Islanding Inverter™ (X7602/X11402) for simplied
solar-plus-storage. Islanding Inverters are storage-ready inverters that connect to Pika PV Link™
DC optimizers and smart batteries to form a Pika Energy Island™ system.
This operation manual includes full details on programming, conguring, registering and
commissioning the X7602/X11402 inverter. The companion document to this installation manual
is the X7602/X11402 Installation Manual. Please reference the Installation Manual for complete
information on the inverter’s initial installation.
Symbols used in this Manual
WARNING: This indicates a fact or feature very important for the safety
of the user to prevent injury or death and/or which can cause serious
hardware damage if not applied appropriately.
CAUTION: Presents information to prevent damage to this product
EARTH GROUND SYMBOL

5Islanding Inverter Operation Manual M00010-17
Section 1: Introduction
About Pika Islanding Inverters: X7602/X11402
Islanding Inverters connect to the Pika PV Link optimizers to form the Pika Energy Island system
for grid-tie solar-plus-storage. Upon the loss of grid power, Islanding Inverters disconnect from
the grid and provide AC power to support protected loads. The inverter provides islanding power
without an external autotransformer. High voltage smart-batteries connect to Islanding Inverters
with no additional storage interface.
All Pika Energy products use the REbus™ 380VDC nanogrid to connect energy sources, storage,
loads, and the grid. The REbus nanogrid automates the ow of power to enable plug-and-play
setup and operation of Pika Energy equipment. For more information about REbus, visit pika-
energy.com.
In the diagram below, an X7601 is directly connected to PV Link optimizers and high voltage
lithium ion storage on the DC (REbus) line, shown the the left of the inverter. To the right of the
inverter are AC lines: 240VAC for grid and home loads, and protected load support up to 50A.
Grid LoadsInverterBatterySolar
Fig 1. Example Energy Island
For project-specic one-line diagrams, contact Pika Energy.

6 Islanding Inverter Operation Manual M00010-17
General Warnings
Section 2: Safety Specications
IMPORTANT SAFETY INSTRUCTIONS. SAVE THESE INSTRUCTIONS!
General Warnings
WARNING: DO NOT ATTEMPT TO SELF-INSTALL INVERTER. A QUALIFIED
SOLAR INSTALLATION PROFESSIONAL OR ELECTRICIAN MUST INSTALL
AND COMMISSION PIKA ENERGY EQUIPMENT. CONTACT PIKA ENERGY
FOR A LIST OF AUTHORIZED INSTALLERS IN YOUR REGION.
SHOCK RISK: HIGH VOLTAGE ELECTRICITY
WARNING: Before installing the Pika Energy Island, read all instructions
and caution markings in this guide and installation manual. Consult
installation documentation for all other REbus devices on the system.
WARNING: Electrical installation in the United States shall be done in
accordance with all local electrical codes and/or the National Electrical
Code (NEC), ANSI/NFPA 70.
WARNING: Electrical installation in Canada shall be done in accordance
with all local electrical codes and/or the Canadian Electrical Code.
WARNING: Connecting the Pika Energy Island to the electric utility
grid must only be done after receiving prior approval from the utility
company and installation completed only by qualied personnel/licensed
electrician(s).
WARNING: This equipment is NOT intended for use with life support
equipment or other medical equipment or devices.
WARNING: Disconnect all smart batteries and turn their Battery
Disconnect switches to OFF before servicing the inverter or touching
electrical terminals. Refer to smart battery documentation for complete
safety instructions.

7Islanding Inverter Operation Manual M00010-17
Section 2: Safety Specications
Safety Shutdown
The Pika Energy Island system can signal to connected devices on REbus to shut down and limit
output voltage to a safe level. The red Safety Shutdown button on the front of X7602/X11402
activates a Safety Shutdown. An external shutdown button may also be installed,
given appropriate labeling. See “External Safety Shutdown Switch” on page 29 of
the Islanding Inverter Installation Manual
To enter a Safety Shutdown, press and hold the red button on the front of the inverter. The
Safety Shutdown LED will illuminate and the LCD screen will indicate a Safety Shutdown has
been initiated.
In a system congured to provide backup power, the DC bus will remain energized on loss of
AC grid power. Upon entering a Safety Shutdown, a shutdown signal will be transmitted to all
devices connected to REbus. In Safety Shutdown, X7602/X11402 will disconnect from the grid,
stop sourcing power to REbus, and immediately disable all sources on REbus by sending a global
shutdown signal. All PV Link optimizers will disconnect their output. The Safety Shutdown LED
will be illuminated to show that the inverter has entered a Safety Shutdown. DC bus voltage will
be displayed on the inverter screen.
WARNING: UNLESS THE SYSTEM IS IN A SAFETY SHUTDOWN, LIVE
VOLTAGE MAY BE PRESENT, EVEN WHEN THE POWER GRID HAS FAILED
AND THERE IS NO SOURCE OF POWER FROM THE SOLAR PANELS. TO
ENSURE THE DC BUS IS NOT POWERED, ALWAYS ACTIVATE SAFETY
SHUTDOWN BEFORE PERFORMING EMERGENCY OR SERVICE WORK.

8 Islanding Inverter Operation Manual M00010-17
Safety Shutdown
Section 3: Operational Modes Overview
Note: Some operational modes require current transformers to be installed with the
Pika Energy Island. See “Connecting Current Transformers (CTs)” on page 22 of
the Islanding Inverter Installation Manual for more information.
The Pika Energy Island has several operational modes available for various installation
congurations, markets, and applications. Connected REbus devices work together to manage
the distribution of power based on the selected operational mode.
Some modes interact with high voltage smart batteries over REbus to store power and/or balance
production and consumption.
Use the following charts to select the correct operational mode for X7602/X11402 to meet your
needs.
Priority Priority Backup Clean Backup Self Supply Grid Tie
1Charge batteries
from bus
Charge batteries
from bus
Support local
loads
Support local
loads
2Charge batteries
from grid
Support local
loads
Charge batteries
from bus
Export to grid
3 Support local
loads
Export to grid Export to grid -
4Export to grid ---
Goal Optimal Inverter Mode
Keep batteries charged as much as possible Priority Backup
Keep batteries charged using only solar power Clean Backup
Sell to the grid as much as possible Grid Connect
Use grid as little as possible Self Supply
Never sell power to the grid* Zero Export

9Islanding Inverter Operation Manual M00010-17
Section 3: Operational Modes Overview
Grid Tie
In Grid Tie mode, X7602/X11402 functions as a conventional grid-tied inverter system. The
system powers local loads, and when generation exceeds load demand, excess power is
exported to the utility for net metering and other credits. Current transformers are optional for
this mode. Without current transformers, the inverter LCD will not display separate house and grid
consumption.
In the event of a grid outage, the battery will power the system until it is depleted. For applications
in which batteries will be connected to the Pika Energy Island at a later date, operate in Grid
Connect mode until batteries are installed.
Clean Backup
In Clean Backup mode, Islanding Inverters prioritize keeping batteries charged and ready for grid
interruption, using only solar power. Current transformers are optional for this mode.
If the battery is not fully charged, X7602/X11402 will use all available solar power to charge the
battery. Grid power will not be used to charge batteries in this mode.
Fig. 3.1 Fig. 3.2 Fig. 3.3
When the batteries are full, solar power is exported to the AC terminals of the inverter, providing
power to the building along with the grid [Fig. 3.1].
When the battery is fully charged, any solar power not used in the building is exported to the grid
[Fig. 3.2]. When grid service is interrupted, the system will immediately enter Islanding Mode,
powering protected loads with solar and battery power together [Fig. 3.3]. If there is enough solar
power available, the solar will simultaneously charge the battery and support the loads.

10 Islanding Inverter Operation Manual M00010-17
Priority Backup
Priority Backup
In Priority Backup mode, Islanding Inverters prioritize keeping batteries charged and ready for grid
interruption, using solar power or grid power. Batteries charge using solar power as it is available,
and take additional power from the grid to charge as fast as possible. Current transformers are
optional for this mode.
If the battery is not fully charged, all available solar power will be used to charge the battery, with
the goal of lling the battery before a grid failure. If available solar power does not meet bus
voltage requirements for recharging the battery, the grid will provide power to expedite battery
recharging.
Fig. 4.1 Fig. 4.2 Fig. 4.3
If solar and grid power are available, both can be used to charge the battery. With current
transformers installed, the system will display the amount of power being drawn from the grid
and how much is being consumed by local loads before reaching the battery [Fig. 4.1]. Without
current transformers, only DC power being used to charge batteries through the inverter [Fig. 4.2]
will be displayed.
In the event of a grid failure, the inverter will enter Islanding Mode. Protected loads are supported
by solar and battery power. If there is enough solar power available, the solar will simultaneously
charge the battery and support the loads [Fig. 4.3].
Self Supply
In Self Supply mode, X7602/X11402 prioritizes powering local loads using solar and/or stored
power rst. Current transformers are required for this mode.
In this mode, generated solar power will be used to charge batteries before any power is exported
to the grid. This mode is optimal in markets in which net metering is unavailable or unfavorable,
making battery-stored power economically more attractive than grid-provided power.

11Islanding Inverter Operation Manual M00010-17
Section 3: Operational Modes Overview
Fig. 2.1 Fig. 2.2 Fig. 2.3
If more power is being produced by the solar array than is needed by local loads, X7602/X11402
will store energy in the battery for later use [Fig. 2.1]. If the battery is full and a surplus of power
is available, that surplus is exported to the grid [Fig. 2.2]. When local demand exceeds available
solar-generated power (e.g. at night), the battery supplies power to support local loads. [Fig.
2.3] If the building requires more power than the battery and solar can provide, then the excess
demand is supported by the grid.
Self Supply Setpoints
In certain situations, it is possible to use the TargMinImprtP and TargMaxImprtP setpoints to
allow the building to deliberately import power from the grid within certain limits. This is useful
for specialized applications, including peak avoidance.
These setpoints are only relevant to Self Supply, and are typically only useful for specifc
applications. Please contact Pika Energy for more information on how to use these setpoints for
your application.
Setpoint Description Default Units
TargMaxImprtP Target Maximum Import Power
Maximum level of power you would like to import from
the grid at any point. If the overall building load is greater
than this setpoint, then the inverter will supply additional
power from the battery and solar array to keep the grid
import power below this level.
This maximum is not guaranteed. If there is not enough
power available from the battery and solar to cover the
load, then the grid will supply the additional power.
0 W

12 Islanding Inverter Operation Manual M00010-17
Sell
Setpoint Description Default Units
TargMinImprtP Target Minimum Import Power
Use this setpoint to charge the battery from the grid
while in Self Supply. If the overall building load is less
than this setpoint, the inverter will import power to the
battery to keep the grid import power up to the setpoint.
If the building load is above the setpoint, the inverter will
not import additional power to charge the battery.
This minimum is not guaranteed. Once the battery is full,
grid import power may fall below this level.
0 W
Sell
This mode commands the system to export all available power to the grid. Any connected
batteries will drain to the grid until their state of charge reaches the “Min Arbitrage” setpoint (refer
to your battery documentation for explanation of battery setpoints). Once a battery is depleted to
this point, it will not charge again until the operational mode is changed.
Zero Export
In some markets, solar PV systems are prohibited from back-feeding the AC grid. For these
applications, enable Zero Export. With Zero Export enabled, the inverter will not send excess
solar power to the grid. Instead, the system will limit solar power generation such that it exactly
matches the power consumed by local loads resulting in no exported power. Current transformers
are required for this mode.

13Islanding Inverter Operation Manual M00010-17
Section 4: Operation and User Interface
Section 4: Operation and User Interface
Each device connected to the system has its own device page. The device page contains basic
information about the device, such as its power level and state. There is also an Ethernet settings
page, and a Home Screen showing a Power Flow diagram.
Naviagte between pages by using the left and right arrows. Press the center button from a device
page to Enable or Disable the device, or to modify the device’s settings. Change operational
modes by pressing the center button from the Home Screen.
Fig 34. The Inverter device page Fig 38. A PV Link device page
REbus Inverter
Internet
Shutdown
(hold)
X7601
Islanding Inverter
Fig 26. These arrow keys are used for navigation

14 Islanding Inverter Operation Manual M00010-17
The Home Screen
The Home Screen
The power ow display on the Home Screen illustrates the ow of power in the Energy Island
system. As power is generated, stored and consumed, animated arrows indicate the ow and
direction of power.
The system AC and DC voltage levels are displayed near the center of the screen. The current
operational mode is displayed at the top of the screen. Press the center button to bring up the list
of available operational modes.
Selecting Operational Modes
Once a system is installed, the correct operational mode must be selected. Typically, you will
select one operational mode for your Energy Island, and the system will remain in that mode
without needing to be changed. However, you may change the operational mode at any time.
To select an operational mode:
1. While viewing the home screen, press the center button.
Fig 39. The system is currently in Grid Tie mode, this can be seen on the home display
2. A list of operational modes will be displayed [Fig. 40]. The current operational mode
will have an asterisk (*) next to it. (It is possible that the list of modes will not include
all those shown here. Not all modes are available for all situations.)

15Islanding Inverter Operation Manual M00010-17
Section 4: Operation and User Interface
Fig 40. The active operational mode will be highlighted with an asterisk
3. Use the up and down arrows to highlight the desired operational mode. Press the
center button to select it.
Fig 41. Toggle the desired operational mode using the up/down directional arrows
4. Arrow right and press the center button to select “Conrm.”
5. The inverter will now be in the new operational mode. Conrm that the mode listed at
the top of the LCD screen is the desired mode.
Fig 43. Self Supply is now selected as the inverter’s operational mode, as shown on the home
display

16 Islanding Inverter Operation Manual M00010-17
Device Pages
Device Pages
Each device connected to the system has its own device page. The device page contains basic
information about the device, such as its power level and state. Use the left and right arrow keys
to scroll through the device pages. Press the center button to bring up the main menu for the
device.
If a device is disconnected or otherwise loses communication with the inverter, then its device
page will read “device ofine”.
Fig 58. PV Link device page showing “Device Ofine.”
Enabling and Disabling Devices
The Pika Energy Island system is able to operate independently without input from a user. The
inverter and other parts of the system are able to return to operation automatically, even after
events such as power outages. To ensure this behavior is safe and predictable, all REbus devices
must be Enabled by the user before they will operate. Enabling the device gives it permission to
resume operation on power-up. If a device is Disabled, it will stay in a Disabled state, and will not
resume operation until it receives user input.
Once Enabled, if grid power is present the X7602/X11402 will create a DC voltage, establishing
the REbus nanogrid. Devices connected to REbus will wake up and begin communications.
Each connected device must be Enabled before allowing it to operate. Once Enabled, connected
devices will automatically resume operation whenever a REbus DC nanogrid is established.
If a device has never been enabled, it will stay in a “Disabled” state until it is enabled by a user.

17Islanding Inverter Operation Manual M00010-17
Section 4: Operation and User Interface
WARNING: Never Enable any device during an installation or while there
are exposed wires present. Always be sure to initiate a safety shutdown
and disconnect power sources when performing service.
To enable a device:
1. Press the right arrow button on the inverter LCD until the inverter device page is
displayed. The inverter will display a status of “Disabled.”
Fig 31. Example inverter device page, showing disabled X7601 inverter
2. Press the center button.
3. Highlight “Enable” and press the center button [Fig. 32].
4. Arrow sideways and press the center button to select “Conrm” [Fig. 33].
Fig 32. Enable device, Step 3 Fig 33. Conrm to enable
The inverter is now enabled. In some situations, the inverter may wait up to ve minutes or longer
before beginning to export power.

18 Islanding Inverter Operation Manual M00010-17
Device Pages
Fig 34. The inverter begins exporting power Fig 35. All REbus devices need enabling
Follow the same steps to enable other REbus devices:
1. Navigate to the device page.
2. Press the center button to select “Enable”.
3. Arrow sideways and conrm your choice.
Fig 36. Follow the same steps to enable other REbus devices. S2501 PV Link™ shown.
Mod. Settings Menu
Most REbus devices have user-adjustable settings for making adjustments to parameters such as
PLM channel, startup voltage or charge setpoints. To access these settings, use the left and right
arrows to navigate to the device page. Then press the center button and select “Mod. Settings”
using the arrow keys and center button.
Fig 59.
X7602/X11402 will fetch settings from connected devices and display them onscreen. This may