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M
onitoring and data transmission
U
ser interface mode
T
ypes of data available
M
easurement tolerance
As a rule, the inverter operates automatically and does not require spe-
cial checks. When there is not enough solar radiation to supply power for
export to the grid (e.g. during the night), it disconnects automatically and
goes into stand-by mode.
The operating cycle is automatically restored when there is sufficient
solar radiation. At this point, the luminous LEDs on the LED panel will
indicate this state.
The inverter is able to provide information about its operation through the
following instruments:
• Warning lights (luminous LEDs)
• LCD display for displaying operating data
• Data transmission on the dedicated RS-485 serial line. Data may be
collected by a PC or a data logger with an RS-485 port. Contact the ABB
support service with any queries about device compatibility.
The inverter provides two types of data, which can be retrieved through
the special interface software and/or the display.
Real-time operating data
Real-time operating data can be transmitted on request through the com-
munication lines and are not recorded in the inverter.
Internally stored data
The inverter internally stores a set of data that are necessary for proces-
sing statistical data and an error log with time marking.
The data supplied by the inverter may differ from measurements taken
by certified measuring instruments (e.g. output meters, multimeters and
grid analysers); since the inverter is not a measuring instrument it has
wider tolerances for the measurements it makes.
The tolerances are generally:
±5% for real-time measurements with output power below 20%
±3% for real-time measurements with output power above 20%
±4% for all statistical data
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7 - Operation
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