Yield Monitoring
SP25-55_User Manual_B8_EN_2012-11-06 19/32
The connector pin assignments are as follows:
X4, pin 13 Positive connection of the S0: output of the energy meter.
Maximum voltage: 5 V; maximum current: 16 mA
X4, pin 23 Ground = negative connection of the S0: output of the energy meter
The following parameters are used for configuring and displays:
Parameter 127: SO-counter pulse per kWh
Menu: Options/basic settings
Unit: ---
Resolution: 1
Default setting: 2000
Password level: 1
This parameter specifies how many pulses the external energy meter supplies per kWh. This value
can be found on the external meter itself and it must be entered here under this parameter to ensure
correct calculation.
N.B.: In some cases, the amount of energy per pulse is also given on the meters.
Examples:
• 0.5 Wh/pulse equates to 2000 pulses/kWh
• Wh/pulse equates to 500 pulses/kWh
Parameter 128: SO-counter pulse
Menu: Actual values/Yield monitor
Unit: ---
Resolution: 1
This parameter counts the actual number of pulses input and is used for internal calculation. The value
of this parameter is regularly saved to guard against loss in the event of a power failure.
Parameter 151: SO-counter energy
Menu: Actual values/Yield monitor
Unit: kWh
Resolution: 1 kWh
If an external energy meter is connected and parameter number 127 is set accordingly, the energy
measured by the external (S0) energy meter is displayed.
Parameter 222: SO-counter power
Menu: Actual values/Yield monitor
Unit: W
Resolution: 1
This displays the power currently being measured by the external (S0) energy meter. Note that the
power value displayed is always time-delayed and rounded off because it has to be back-calculated
from the number of pulses. This parameter can be used to display the power of a "neighbouring
installation" or "external installation" in an installation equipped with Solutronic inverters (e.g. for a
large external display).
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