SMA HM-20 User Manual

10 Configuration of the SunnyHomeManager system
SMA Solar Technology AG
Operating manual 47HM-20-BE-en-19
Setting Explanation
Adaptive increase of
the purchased energy
limit
When activating, you choose to automatically adjust the purchased energy limit indicated
above to the new maximum value if the grid-supply limit could not be met, e.g. due to insuffi-
cient battery charge (see above).
Automatic reset and
starting point
If the option Adaptive increase of the purchased energy limit was selected, you can
specify that the grid-supply limit be reset to the value originally entered manually for the grid-
supply limit after a certain (accounting) period.
You can specify this accounting period via the drop-down menus Accounting period and
Start.
Requirement:
☐ Your system must have at least 1 battery-storage system, i.e. it must have at least 1 battery inverter or 1 hybrid
inverter.
The following inverters support this function:
– SunnyBoyStorage, all power classes
– Sunny Island of the type SIxxM-12, SIxxH-12, SIxxM-13 und SIxxH-13
– Sunny Tripower Smart Energy, all power classes
Procedure:
1. In the Configuration > System properties menu, click on the Parameter tab.
2. Click on Edit.
3. In the Peak load shaving area, click on Yes.
4. Under Purchased energy limit enter the required power in kW that you want to draw from the utility grid at a
maximum.
5. As a SOC limiting value, enter a percentage up to which the battery storage capacity should only be used for
peak load shaving.
6. If you want to avoid an interruption in the power supply when the battery is insufficiently charged, activate the
option Adaptive increase of the purchased energy limit.
7. If you have the option Adaptive increase of the purchased energy limit activated, the input mask expands
and offers you the possibility to limit this option.
To set a time limit, you must activate the option Automatic reset and starting point and then select an Period
from the drop-down menu as well as the starting point Begin.
8. Click on [Save].
☑ In the page and menu selection Energy balance > Day, the current purchased energy limit is displayed as a
dotted blue line in the diagram Generation.
10.4.7 Setting the Optimization Target
The optimization target indicates whether the SunnyHomeManager should prioritize ecological or economical factors
during load management:
• ecological: highest possible self-consumption
Greater self-consumption conserves the environment because there is no energy loss caused by the transport of
current through the utility grid.
• economical: highest possible cost savings
The Sunny Home Manager calculates the most financially rewarding control of the loads, taking into
consideration the electricity tariff. In certain cases, it may be more economical to feed the PV electricity into the
utility grid and to operate the individual loads at night using electricity purchased from the grid.
The optimization target affects the following components:

SMA HM-20 Specifications

General

Brand	SMA
Model	HM-20
Category	Measuring Instruments
Language	English