SMA SUNNY HOME MANAGER - Manual (Page 76)

9 Load Control SMA Solar Technology AG
76 HoMan_Portal-BA-en-17 User Manual
Time Period Type "Load CAN be switched on": Configuring the Conditions for
Switching on the Load
The Sunny Home Manager can switch on the load depending on the proportion of PV energy or
depending on the maximum permissible energy costs.
Proportion of PV energy:
You can set the load to be switched on only if a certain minimum proportion of PV energy is available
to operate the load. If the Limitation of active power feed-in function is activated
(see Section 12.9 "Configuring Limitation of Active Power Feed-In", page 101), you can also set the
proportion of surplus PV energy that would otherwise be derated.
Maximum permitted energy costs:
You can set a maximum amount for the energy costs for operating the load. The price range of the
slider is based on the highest and the lowest possible energy costs, e.g. the highest energy costs for
operation exclusively with expensive grid current and the lowest energy costs for operation
exclusively with PV energy, the cost of which is calculated based on the feed-in tariff less the
self-consumption tariff. In addition, if Limitation of active power feed-in is activated, surplus
PV energy can be taken into account which is free, as it would otherwise be derated.
Adding an Additional Time Period
If a load is not to run throughout the day, but rather at predefined intervals (e.g. pond pump),
you must add several consecutive time periods for this day. Here, the number of time periods equates
to the number of intervals in which the load is to run.
1. Select Configuration > Load overview and planning in the page and menu selection.
2. In the line of the desired load, in the column Configuration, select
.
3. In the tab Name of Load, select the button [Edit].
CAN time period: In some cases, the load is not switched on
If the configured proportion of PV energy is not attained or the maximum permissible energy
costs are exceeded, it is possible that the load will not receive any energy in the CAN time
period and the SMA radio-controlled socket is not switched on.
Example: Operating loads with at least 50% PV energy
A washing machine is only to be switched on if 50% of the washing machine's energy requirement
can be covered by PV energy.
• The slider is set to 50%. If enough PV energy is available, the washing machine is switched on.
Example: Operating the load exclusively with free energy
A pond pump should only be switched on if there is more PV energy available than is permitted to
be fed into the utility grid.
• The slider is set to 0 Euro/kWh. When enough surplus PV energy is available, the pond pump
will be switched on.