SMA HM-20 - Entering the Power Consumption; Entering the Maximum Program Operating Time

12 Load Control
SMA Solar Technology AG
Operating manual 81HM-20-BE-en-19
You must make this setting directly when adding the load and specify whether the load must run predefined programs
or not:
Setting Explanation
Yes After the start, the load runs through a defined program.
Interrupting the load during the course of the program can affect the operation result
and should therefore be avoided. (Examples: washing machine, dryer)
No The load always runs when an electric current is present and always carries out the
same function during operation.
Multiple switching on and off per day does not cause any problems. The load does not
have to run permanently - as long as a minimum operation time per day is achieved, in-
terruption of operation has no negative effect on the function being carried out. (Exam-
ples: pond pump, heating element, water heater)
Once the setting has been made, it cannot be changed. If you want to change the information, you must delete the
load and add it again.
State of the Assigned Switching Device after Load Operation
This information is coupled with the program controllability and cannot be changed.
You see the following settings:
• If the load is program-controlled: switched on
• If the load is not program-controlled: switched off
Upon expiry of the set time period, the load remains in operation until the previously set target value (e.g. target
temperature for a heat pump) is reached. You must set the target value directly on the load (see manual for the load).
12.4.4 Entering the Power Consumption
The power consumption is the power (medium watt amount) typically required by a load for operation (see type label
or load manual).
The SunnyHomeManager takes account of this value in the initial calculation of the required energy.
Once the load provides measured values of its actual consumption during operation, the SunnyHomeManager can
determine a more precise power value after a learning phase. This way, the SunnyHomeManager gradually
improves its load planning and increases energy and cost savings.
Loads with low power consumption
Sunny Home Manager may not detect when controlled loads with low power consumption (e.g., < 250 W) are
switched on with a delay or are switched off automatically after reaching an end point. If either of these things
occurs, Sunny Home Manager will be unable to allocate freed-up energy to other loads.
If the assigned switching device is set to Only to switch, not measure (see Section12.4.9, page83), the
power consumption set here is used instead of the measured power as long as the device is switched on. This is
necessary, for example, when controlling via a relay or contactor, since the actual power consumption of the load
is not measured via the switching device.
Procedure:
• Enter the power of the load connected in the text field Power Consumption.
12.4.5 Entering the Maximum Program Operating Time
☐ This option can only be set for program-controlled loads.