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000055BG
2 - Characteristics
F
unctionality and components of the equipment
Data transmission and control
The inverter, or a network of several inverters, can also be monitored
remotely through an advanced communications system based on an
RS-485 serial interface. The range of optional ABB devices that can be
connected to this communication line allows one to monitor the device
locally or remotely via internet access.
In addition, and again as an option, it is possible to use a monitoring sy-
stem via radio by installing on the inverter itself the “PVI-Radiomodule”
radio board in order to have a remote data visualization terminal with a
wireless connection.
Radiomodule
The radiomodule board is an accessory that is used to add a radio com-
munication line to the inverter. It can be used in parallel to the RS-485
line for the transmission of data to the monitoring system.
Configurable relay
The inverter has a configurable switching relay that can be used in vari
-
ous operating conditions set in the dedicated menu. A typical application
example is the closing of the contact when an alarm occurs.
Remote switching on/off
This command can be used to disconnect/connect the inverter to the grid
via an external (remote) command.
This function must be enabled in the relevant menu and if it is operating,
the connection of the inverter on the grid, besides being dictated by the
presence of normal parameters, also depends on the external switching
on/off control.
Input poles grounding
The circuit type of the inverter “isolated by a high-frequency transformer”
allows, through special wiring located inside the inverter, for the connec-
tion of one of the two input DC poles (positive or negative) to ground.
It is also possible to have both the input DC poles “floating” and as such
not grounded.
Stand by Mode
This functionality allows the inverter to remain on and grid connected
even with an input voltage of less than 70Vdc. It is particularly useful in
conditions of low irradiation and with passing shadowed areas that would
cause continuous connections and disconnections to the grid. Instead,
with this functionality, the inverter starts to deliver power as soon as the
input voltage exceeds the 80VDC without having to repeat the grid con-
nection sequence.
The time in which the inverter remains in this state can be set by acces-
sing the Settings menu and activating the time for Input Undervoltage
Protection (TprotUV). If within the set time the conditions to export po wer
to the grid do not reoccur (i.e. Vin>80VDC), the inverter disconnects from
