Yield Monitoring
SP25-55_User Manual_B8_EN_2012-11-06 18/32
14 Yield Monitoring
14.1 Integrated energy meter
The inverter is equipped with an integrated energy meter that calculates and adds up the energy fed
into the mains power supply (accuracy: approx. 1.5%).
N.B.: The energy meter of the inverter deliberately indicates a value approx 1.5% lower than that
actually fed into the grid. The purpose of this is to ensure the inverter does not indicate to you, the
owner, a value that is higher than that recorded by the actual "calibrated" export meter of your power
supplier.
Parameter 8: Energy today
Menu: Actual values/Yield monitor
Unit: kWh
Resolution: 0,001 kWh
Default setting: 0
Password level: 1
This displays the amount of energy fed into the grid so far today.
N.B.: The value is not saved and the amount of energy fed in during the whole day is displayed shortly
before it becomes dark.
Parameter 12: Energy total
Menu: Actual values
Unit: kWh
Resolution: 1 kWh
This parameter is used to display the total amount of energy the inverter has fed into the power supply
system since its installation.
Parameter 29: Compensation Euro per kWh
Menu: Yield control
Unit: €/kWh
Resolution: 0,0001 €/kWh
Default setting: 0.287€/kWh
Password level: 1
This parameter displays the currently applicable compensation per kW/h of energy supplied to the
grid.
14.2 Annual energy logger
The inverter records the daily yield for every day of the year. The inverter is equipped with a memory
that stores the yield for 365 days. This memory is cyclical, i.e. after a year, it overwrites the old values
stored.
The annual energy logger can be read out via any of the available communication ports.
You call up the annual energy logger in the display from the basic menu.
14.3 Connecting an external energy meter
To enable additional monitoring of yield, it is also possible to connect an external energy meter
(electricity meter) with S0 output (prerequisite) directly to the inverter.
This external energy meter may be the actual export meter used by the utility company to record the
amount of electricity fed into the grid. Due to the fact that the internal energy meter of the inverter is
deliberately inaccurate, the option of connecting an external energy meter enables the exact value the
PV installation actually yields to be recorded and displayed.
The external energy meter output pulses via the S0 output, which the inverter detects and records.
Connecting the external energy meter to connector X4 of the inverter:
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