
Solar-Log1000: Configuration at the unit
Configuring the inverter data (Basic/Inverter)
Solar-Log
1000/500/200
Installation 229 of 268
Configuring the monitoring
Note
When configuring through the touchscreen, the “Monitoring” subdialog does
not apply for current meters. Current meters in inverter mode can be
configured from the PC ( Page 165).
Defining faults
Dialogue boxes
Active, Inactive
Monitoring can be activated for the desired period, or deactivated com-
pletely.
Period of time unshadowed, Monitoring starts at min. power
Combined conditions for fault definition:
Monitoring is based on continuous comparison of the power from all inverters,
including individual trackers in the case of inverters with more than one tracker.
If an individual module loses power, the string power for the same level of
irradiation will drop, and can thus be detected and indicated.
Power comparison always works reliably even if the weather is cloudy.
The important thing is that the modules should not be in the shade during
the set period. Therefore, the monitoring period should be scheduled for
periods when there are no shadows.
As power measurement in the inverter is very inaccurate under a certain
threshold, you can also specify a minimum percentage value (Monitoring
starts at minimum power) below which monitoring is interrupted.
Permanent snow covering possible
False messages may occur if the unit is covered in snow. These are mes-
sages from the power comparison that occur as a result of partial covering,
or failure messages if the inverter is no longer switched on at all because it
is completely covered by snow.
There are two ways to minimise this problem:
– The minimum percentage value above which power monitoring starts
should be set as high as possible, e.g. 30%. For example, if the genera-
tor power is 4500 Wp, power monitoring will start only at 1350 watts.
The partly shaded modules reduce the power from the unshaded mod-
ules so that the required 1350 watts is never reached. This is how the
problem of partial covering is resolved.
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