SMA HM-20 User Manual

10 Configuration of the SunnyHomeManager system
SMA Solar Technology AG
Operating manual 45HM-20-BE-en-19
3. If limitation of active power feed-in is required for your system, you can fulfill this requirement as follows:
☑ If the grid operator requires limitation to a percentage of the nominal PV system power, select the option
Max.xx% of the nominal PV system power and enter the required percentage.
☑ If the grid operator requires limitation to a maximum active power in kW, select the option max. xx kW and
enter the maximum permitted active power in kW.
☑ If the grid operator requires limitation of the active power feed-in to 0% or 0kW ("zero export"), enter the
value 0 in the relevant option.
4. If the active power feed-in is only to be limited when this becomes necessary due to external specifications,
activate Only implement external specifications.
5. If your system has a battery or hybrid inverter and you have set the nominal system power to a correspondingly
low value, you can use the surplus energy to charge the battery-storage system. To do this, enable the option
button Including the battery inverter.
6. If the grid operator requires closed-loop control in accordance with UNE217001:2015, you must enable the
function Zero export must be done in accordance with UNE217001:2015. Enabling the function may
result in the need for slightly higher grid-supplied power from the utility grid to ensure this type of control.
7. Click on [Save].
☑ The data is being transferred. This process can take up to 5minutes. In the page and menu selection Energy
balance > Day, the specified limitation of active power feed-in is displayed as a dotted red line in the
diagram Generation.
☑ In the page and menu selection Energy balance > Day, the specified limitation of active power feed-in is
displayed as a dotted red line in the diagram Generation.
10.4.4 Activating or Deactivating Grid Management Services
As part of grid management services, it may be necessary to implement grid operator specifications for active power
limitation and for reactive power feed-in in your PV system. The SunnyHomeManager can receive these specifications
via Ethernet-based communication. The grid operator can set up this link. For this, you have to activate grid
management services for the SunnyHomeManager.
Procedure:
1. Select the appropriate option in the area Grid management services via Ethernet based communication:
☑ If the SunnyHomeManager does not have to implement any grid operator specifications, select No (default
setting).
☑ If the SunnyHomeManager has to implement any grid operator specifications, select Yes.
The default setting Port 502 can normally remain set.
2. Change the port if necessary:
If there are several Modbus devices in the network or if the grid operator specifications are to be transmitted via a
certain port, enter this port in Port xxx.
If you change this port, you must also change the port in your VPN router and inform the grid operator of this
change.
3. Click on [Save].
☑ The data is being transferred. This can take up to 5 minutes.
10.4.5 Entering time period control for charging the battery-storage system
The time period control is only available for systems with SunnyIsland, SunnyBoyStorage or
SunnyTripowerSmartEnergy.
It might make sense to charge battery-storage systems at defined times (typically at low tariffs at night) due to time-
dependent electricity tariffs from the electric utility company.

SMA HM-20 Specifications

General

Brand	SMA
Model	HM-20
Category	Measuring Instruments
Language	English