Block Energy Manager

This control element shows the energy flow in the house – photovoltaics, grid, battery and consumption – and at the same time operates the energy distribution: the associated function block switches heat pump, wallbox and hot water preparation so that as much of the own solar power as possible is used. The limits for this are set here in the control element.

Operation

1. Grid: the power at the grid connection in kW. A positive value is import from the grid, a negative one feed-in. The arrow below points to the centre when importing and to the grid when feeding in.
2. Production: the current power of the photovoltaics. From 0.1 kW an arrow points to the centre.
3. Autarky: which share of the consumption is covered by the own generation and the battery at the moment. The blue ring fills with the value.
4. Consumption: the power the house needs at the moment.
5. Battery: at the top the state of charge in percent, at the bottom Charge, Discharge or Standby, with the power while charging or discharging. The arrow points to the battery while charging and to the centre while discharging. The battery only appears if it is set up.
6. Gear: opens the settings of the energy distribution, see below.

The arrows alternate between single and double every half second, so the energy flow can be seen at a glance. A tap on a field opens its chart – grid, production, consumption or autarky. The battery has two tap areas: the upper part opens the course of the state of charge, the lower part the charged and discharged energy.

The chart

1. List: switches between the chart and the overview. The overview shows for the selected period Autarky, Production, Consumption, Import and Export with their amount in euros as well as Savings and Yield. The savings are the energy covered by the house itself – consumption minus import – at the import price, the yield is the export at the export price.
2. Summary: the totals of the period for the selected field: for the grid import and export with their amount, for production and consumption the energy with its price, for the battery the charged and discharged energy or the minimum and maximum state of charge, for autarky its value and the savings.
3. Chart: one value per hour. While the data are loading, “Please wait...” appears; if there is nothing for the period, “No data available”.
4. – and +: + zooms in horizontally, up to ten times, – zooms out again.
5. Arrows: page back and forward by the selected period, but not beyond today. The number in brackets on the button shows how far back you have paged.
6. Time range: shows the selected period; a tap opens the menu.

The menu

1. 6 hours to 24 hours: the last hours up to now.
2. Day to 90 days: whole days up to and including today. Year shows the current calendar year.
3. Import / Export: the price per kWh for import and feed-in, adjustable from 0 to 100 €. Default 0.20 € for import and 0.10 € for export. All amounts in euros are computed with these prices; the savings are valued with the import price. The prices and the time range selected last are stored on the respective device.
4. Waste bin: after the question “Delete all data?” deletes all recorded data of this block.
5. Exit: closes the menu.

The settings

1. Tap a value: opens the input. The three operating modes are selected by tapping, every tap switches on: Automatic → On → Off.
2. List: can be moved with a finger or the mouse wheel; the remaining values follow below the visible rows.
3. Save: transfers the values to the controller. Changes only take effect with Save; closing the dialog without saving discards them. When opened, the dialog fetches the current values from the controller.

What the individual values do is described in the table Settings below.

Setup

This section is meant for the installer of the system.

The control element is linked to the function block Block Energy Manager, which computes consumption and autarky and controls heat pump, wallbox and heater rod: first create the function block and assign variables to its inputs and outputs, then right-click the control element and select the function block. The variables are taken over in the process. Without a link, a tap on the element points this out.

Important: the control element reads the values from the variables at the inputs and outputs of the block. If an input is only wired internally to another block and has no variable, its display stays at 0. Whether the battery is charging or discharging comes from the input Battery status; which values mean charging and discharging is set by the parameters Battery status charge and Battery status discharge of the block. Any other value counts as standby.

The input Operating mode (BA) of the block can override the operating modes of all consumers together, see function block.

The settings are stored in the controller, not in the project. They survive the transfer of a project, but can only be read and written while a connection exists.

Parameters

Settings

The values of the dialog Settings. The defaults apply until the values are saved for the first time.

Variable links

The variables come from the link with the function block and need not be entered by hand. Displayed are:

See also General properties of all control elements.