Functionality and components of the equipment
Congurable relay
The inverter is equipped with a congurable switching relay, which can
be used in different operating congurations that can be set using the de-
signated software. A typical example of application is closing the contact
when an alarm is triggered.
Remote switch-on/switch-off
This command can be used to switch off/switch on the inverter via an
external (remote) command.
This functionality must be enabled in the menu via the designated software
and when active, switching on the inverter, besides being dictated by the
presence of normal parameters which allow the inverter to be connected to
the grid, also depends on the external control for switching on/off.
Reactive power feed into the grid
The inverter is capable of producing reactive power, and then feeding it
into the grid through this connection, by setting the phase factor. Manag-
ing the input can be controlled directly by the grid company via a dedi-
cated RS485 serial interface or set using the designated conguration
software, Aurora Manager LITE.
Power feeding modes vary according to the country of installation and
the grid companies. For detailed information on the parameters and cha-
racteristics of this function, contact ABB directly.
Limiting the active power fed into the grid
The inverter, if enabled and set using the designated Aurora Manager
LITE conguration software, can limit the amount of active power fed into
the grid by the inverter to the desired value (expressed as a percentage).
Monitoring string inputs (versions -SX / -SY only)
The inverter, if enabled through the designated Aurora Manager LITE
conguration software, can monitor and display the voltage and current
of each individual string input.
It also checks the status of the string fuses
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(both positive and negative)
and generates a warning in the event of a fault (viewable via monitoring
system or Aurora Manager LITE software).
Overvoltage surge arrester monitoring (only -SX / -SY)
The inverter monitors the status of the overvoltage surge arresters (-SX
on AC and DC side) (-SY only on DC side), and generates a warning in
the event of a fault (viewable via monitoring system or Aurora Manager
LITE software).
Data transmission and control
The inverter or networks of several inverters can be monitored locally or
remotely using an advanced communication system based on an RS-
485 serial interface that can be congured to communicate using the
proprietary "Aurora" or public "ModBus RTU" protocol.