Energy Monitor

The Energy monitor function block allows you to use a PV Inverter to show electricity production information on the Loxone user interface.

INTRODUCTION

You can choose to enable statistics on the Energy monitor block so that you can track the import, self-consumption, total consumption and total yield. The block also has outputs for total, daily, weekly etc consumption and production so you can use this information elsewhere in your configuration.

BASIC SETUP

You can connect an arbitrary energy meter to the function block’s object inputs. Choose “Object Inputs” in the Data Source drop-down menu. A programming illustration:

You also need to enter the unit prices so that the information for costing is displayed correctly in the user interface. Take a look at the overview section for more information on these parameters.

COMMUNICATE WITH A PV-INVERTER

To obtain data from a PV-inverter, choose “Fronius” or “Kostal” as Data Source. In the Properties window you can adjust IP-address and Device number. Data will be received periodically every minute.

You also need to enter the unit prices so that the information for costing is displayed correctly in the user interface. Take a look at the overview section for more information on these parameters.

DEVICE NUMBER

Fronius:

You can find the device number in the Fronius-webinterface in the settings under inverter.
Furthermore, this link responds the number:

http://”IP”/solar_api/v1/GetActiveDeviceInfo.cgi?deviceClass=Inverter

Kostal:

The device number is equal to the RS485 address.
You can find the device number in the Kostal-webinterface.

OVERVIEW

INPUTS

DESCRIPTION
Ep Analogue input energy Total energy produced [kWh]
Pp Analogue input power Current production power [kW]
Ev Analogue input energy Energy from the supplier (Import). Depending on Parameter “A”, gets added or is an absolute value.

Required for stats.
Pv Analogue input power Current power provided from the energy supplier.

Required for stats.
Ed Analogue Input Energy Exported to the Grid (measured in Kilowatt hours, kWh). This is displayed as an absolute value or is added, depending on parameter A.
R Reset Resets all the counter values to 0.

OUTPUTS
AQP Current production Shows the power produced in kW.
AQP1 Today’s production Shows the power produced today in kWh.
AQP2 This month’s production Shows the power produced this month in kWh.
AQP3 This year’s production Shows the power produced this year in kWh.
AQP4 Total production Shows the total power produced in kWh. Also shown on the user interface.
AQC Current consumption Shows the current consumption (power) in kW, also shown on the user interface.
AQc1 Today’s consumption Outputs the day’s consumption in kWh, reset each day at midnight.
AQc2 This month’s consumption Outputs the month’s consumption in kWh, reset on the first day of the month at midnight.
AQc3 This year’s consumption Outputs the year’s consumption in kWh, reset on the first day of the first month of the year at midnight.
AQc4 Total consumption The total consumption in kWh, also shown on the user interface.
AQi1 Today’s yield Outputs the day’s yield in currency, reset each day at midnight.
AQi2 This month’s yield Outputs the month’s yield in currency, reset on the first day of the month at midnight.
AQi3 This year’s yield Outputs the year’s yield in currency, reset on the first day of the first month of the year at midnight.
AQi4 Total yield The total yield in currency, also shown on the user interface.
S Status The status code of the inverter is output here.
E Error If the inverter has an error the relevant code for the error will be output here.

PARAMETERS
Prd Feed price Price per unit for exporting electricity to the grid in £s.
Prc Cost price Price per unit for importing electricity from the grid in £s.
CO2 Conversion factor Carbon offset calculation (Kg CO2/kWh). The exact CO2 savings factor can be obtained from your energy provider.
A Input Ev mode 0 = values on input Ev are added, 1 = the value on input Ev is an absolute value.