The energy produced by the PV system is used to optimize
self-consumption. Excess energy is used for battery
charging. Any remaining excess energy is exported to the
grid.
If the grid fails, the system automatically switches to
back-up mode, in which the load can be supplied by the
PV or battery.
The battery can be charged using grid power, with
charge time/power adjustable via the PV Master app.
When there is no PV present, and the battery has
insufficient change, the EM system will supply the load
using grid power.
1.1 OPERATING MODES INTRODUCTION
Note:
The introduction describes the general behaviour of the EM
system. Operating mode can be adjusted via the PV Master
app according to the system's layout. The diagram below
shows the EM system's general operating modes.
01 INTRODUCTION
The GoodWe EM series of hybrid/bidirectional solar inverters are designed for use in solar systems
that integrate a photovoltaic system (PV), batteries, loads and the local grid for energy manage-
ment. The energy produced by the PV system is used to optimize system self-consumption. Excess
power is used for battery charging, and any remaining power can be exported to the grid. The
battery can discharge to support loads when PV power is insufficient to meet self-consumption
demands. If both PV power and battery power are insufficient, the system will draw power from
the grid to support connected loads.
The EM system will typically operate in one of the following modes, based on the configuration
and layout of your system.
Wi-Fi
Reset/Reload
SYSTEM
GRID
BACK-UP
2019
ENERGY
COM
Wi-Fi
BATTERY
FAULT
1.2 Safety & Warnings
The EM series of inverters from Jiangsu GoodWe Power Supply Technology Co., Ltd. (also referred
to as Goodwe) strictly complies with relevant safety rules for product design and testing. Please
read and adhere to all the instructions and warnings on the inverter and in the user manual during
installation, operation, and maintenance. Improper use could cause personal injury or damage to
property.
Caution!
Failure to observe the warning notices in this manual may result in injury.
Danger of high voltage and electric shock!
Components in the product can be recycled.
This side up! The package must be transported, handled, and stored such
that the arrows always point upwards.
Danger of hot surface!
No more than six (6) identical packages to be stacked on top of each other.
Products should not be disposed of as household waste.
Fragile - The package/product should be handled carefully and never tipped
over or thrown.
Refer to the operating instructions.
Keep dry! The package/product must be protected from excessive humidity and
must be stored under cover.
You must wait at least 5 minutes after disconnecting the inverter from the utility
grid and from the PV before touching any live internal parts.
CE mark
Explanation of Symbols
5min
Mode Ⅰ Mode Ⅱ
Mode Ⅲ Mode Ⅳ
Wi-Fi
Reset/Reload
SYSTEM
GRID
BACK-UP
2019
ENERGY
COM
Wi-Fi
BATTERY
FAULT
Wi-Fi
Reset/Reload
SYSTEM
GRID
BACK-UP
2019
ENERGY
COM
Wi-Fi
BATTERY
FAULT
Wi-Fi
Reset/Reload
SYSTEM
GRID
BACK-UP
2019
ENERGY
COM
Wi-Fi
BATTERY
FAULT
Wi-Fi
Reset/Reload
SYSTEM
GRID
BACK-UP
2019
ENERGY
COM
Wi-Fi
BATTERY
FAULT
02
01
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