66
6
Replacing an Optimizer
1. Power off the solar inverter and remove
the faulty optimizer.
2. Install a new optimizer and correctly
connect its cables.
3. Power on the solar inverter. On the Device
Commissioning screen, choose
Maintenance > Add/Delete device
, and
tap
Auto search
to add the new optimizer.
4. On the Device Commissioning screen,
choose
Maintenance > Physical layout
design of PV modules
, select the
corresponding PV module, and bind the new
optimizer. Click
Submit
.
1
2
3
4
7
FAQ
Does the Optimizer Support Partial Configuration Scenarios?
7.1
The optimizer supports partial configuration scenarios. It can communicate with the solar
inverter to implement module-level management but does not support module-level shutdown.
The optimizer uses Staubli MC4 DC connectors. Ensure that the DC connectors to be connected
are of this model. If the DC connectors to be connected are not of the Staubli MC4 model, the
connector compatibility report and third-party lab (TUV, VED, or Bureau Veritas) report from
the DC connector manufacturer must be available. Using incompatible DC connectors may
result in serious consequences. The resulting device damage is beyond the warranty scope.
Full configuration scenario: For a single-phase solar inverter, the number of PV modules
connected in series in a PV string cannot exceed 25 and the maximum power of a PV string
cannot exceed 5 kW under any condition. For a three-phase solar inverter, the number of PV
modules connected in series in a PV string cannot exceed 50 and the maximum power of a PV
string cannot exceed 10 kW under any condition. Otherwise, the solar inverter may be
damaged and even a fire may occur.
Partial configuration scenario: The total open-circuit voltage of the PV modules in a PV string
cannot exceed the maximum input voltage of the solar inverter under any condition.
8
Precautions
