SMA SUNNY BOY STORAGE 3.8-US Instructions D'installation page 23

SMA Solar Technology AG 4 Product Overview
Multi-battery device
The product is equipped with the multi-battery function as standard from firmware version
1.50.10.R. The multi-battery function enables to charge and discharge several batteries of the same
or different type. If the system is extended by one or several batteries or one battery is replaced,
the battery configuration must be reset and carried out again. The configuration is carried out via
the installation assistant on the user interface of the battery inverter. An overview of batteries
approved by SMA Solar Technology AG and their possible combinations is available at
www.SMA-Solar.com.
Multifunction Relay
The inverter is equipped with a multifunction relay as standard. The multifunction relay is an
interface that can be configured for the operating mode used by a particular system.
SMA Smart Connected
SMA Smart Connected is the free monitoring of the product via the SMA Sunny Portal. Thanks to
SMA Smart Connected, the operator and qualified person will be informed automatically and
proactively about product events that occur.
SMA Smart Connected is activated during registration in Sunny Portal. In order to use SMA Smart
Connected, it is necessary that the product is permanently connected to Sunny Portal and the data
of the operator and qualified person is stored in Sunny Portal and up-to-date.
Time-of-Use
The Time-of-Use (TOU) function is disabled by default and must be enabled by creating power
profiles.
With the TOU function, you can adjust the charging behavior of the battery to your utility rate plan
(electricity tariff). Energy bills are thus reduced and electricity at lower cost can be used. You can
determine in which time range the battery with a specified charging power is operated. At specific
times, this is mostly useful when the battery's state of charge has to take on a certain value or the
rate plan makes the charging more attractive, regardless of the power at the grid connection point.
The charging parameters set in the power profile are only limited by the state of charge (SOC). At
times when the Time-of-Use function is not enabled, the battery is charged correspondent to the
increased self-consumption for the entire system.
Peak load shaving
With the "Peak Load Shaving" function, you can optimize the behavior of the battery inverter with
respect to the power exchange at the point of interconnection. This is mostly useful when a higher
supply of energy would lead to a higher electricity cost. With the "Peak Load Shaving" function,
certain grid-exchange power outputs to which the battery inverter is adjusted depending on its
power and battery capacity available can be set. Power peaks and additional costs can thus be
avoided.
You can configure times and setpoints for the power drawn at the grid-connection point. When the
loads require additional energy, the battery is discharged and the maximum value is kept constant
at the grid-connection point. This is based on the prerequisite that the battery is sufficiently charged.
At times when the "Peak Load Shaving" function is not activated, the battery is charged or
discharged correspondent to the increased self-consumption for the entire system. The "Peak Load
Shaving" function is deactivated by default and must be activated by creating power profiles.
Installation Manual SBSxx-US-10-IA-xx-14 23