The inverter carries out checks on the power grid and the PV installation conditions at regular intervals and warns the operator if faults arise.
Faults are indicated by means of an acoustic signal and an LED next to the display. What's more, each inverter has unassigned digital outputs and relay contacts to which other visual and acoustic signalling devices can be connected.
Other yield monitoring options have also been developed in order to quickly detect problems with installations and modules, shadowing or soiling.
Yield monitoring with sensor
Our SOLPLUS 25–55 series of inverters are fitted with numerous sensor connections as standard. The module-temperature and insolation sensors monitor the yield by comparing the calculated sensor target yield and the actual yield of the installation. Deviations quickly provide clear indications of system faults. If a defined deviation is found, a warning is output. Sensors can be connected to installations equipped with SOLPLUS 100/120 inverters by means of the SOLCOMBOX.
Yield monitoring with master-slave networking
Yield monitoring in a master-slave network offers a simple and efficient method of monitoring PV installations. In such a network, one of the SOLPLUS 25–55 units is defined as the data master. The respective rated power of the PV generator connected is stored for each inverter of the network. The master inverter then starts comparing the yields, which are referenced to the nominal DC output. If a previously defined deviation is found, a warning is output.
Automatic remote data retrieval with SOLVOLT
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Other connection options
Large displays from manufacturers renowned in this field (e.g. RiCo or Schneider) can be connected directly to SOLPLUS inverters. You can configure all values shown on the large display individually.
An S0 pulse meter can be used to calculate the yield independent of the internal meter or utility meter. It is connected directly to the SOLPLUS inverters. The yields of external inverters can also be included.