14 Program features
Operational description
PVS980-58 inverter operation uses the following machine states.
Standby – inverter is not enabled.
Initialize – inverter initializes the internal systems and performs self-tests.
Disconnected – inverter waits for permission to connect to the grid.
Connecting – inverter performs DC voltage and grid stability tests.
MPPT – is the normal operational state during power generation.
Standby or Night Q production – When the DC power level from panels is low, the
inverter is in this state depending on the night mode settings (parameter 213.51 Night Q
production).
Disconnecting – disconnects from the grid.
Initialize – If inverter is not enabled or if fault occurs, inverter enters this state and waits to
be reset.
Figure 1. PVS980-58 inverter operational states
Initialize
Disconnected
Connecting
Disconnecting
MPPT
Night Q
production
1
2
3
4
5
6
7
8
Transition
number
Triggering condition
1 Inverter is enabled and initialized
successfully, and not faulted.
2 Grid is stable and AC breakers
are closed.
3 All power modules are ready for
operation.
4 Reactive power compensation is
enabled and PV power is less
than the pre-defined limit.
5 Reactive power compensation is
disabled.
6 Inverter is faulted or shut down
is requested or grid is not stable
or PV power is less than the
predefined limit.
7 Inverter is enabled and not
faulted.
8 Inverter is disabled or faulted.
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