EN
49
• Set the communication protocol parameters on the “Connettivity
→ Communication protocols” menu of the APP “Installer for solar
inverters” or Web User Interface.
NOTE –
D
See the product manual on how to access to the
APP “Installer for solar inverters” or Web User Interface
RS-485 external devices
The RS-485 port can be used for connecting supported devices
(like VSN800 Weather Station, meter, etc) and have the inverter
acting as datalogger for the connected devices.
In this case data from accessories will be logged and transferred to
FIMER Aurora Vision cloud by inverter itself (master mode).
NOTE –
D
Please refer to “Accessories compatibility matrix”
application note on FIMER web site
for
getting info on accessory supported.
• Connect the external device observing the correspondence
between the signals as for the table below:
Signal
Symbol
+RT
-RT
485 RN
+RT
-RT
485 RN
Positive
data
+RT
Negative
data
- RT
Reference RN
Shield
ATTENTION –
A
Use a shielded twisted pair cable with
characteristic impedance of Z0=120 Ohm in case of long
distance connection.
When an accessory is connected to the 485-1 port, it must be
added and configured into the “Connettivity → Additional devices”
list on the APP “Installer for solar inverters” or Web User Interface.
5.6.2.2 Remote ON/OFF connection
The remote ON/OFF functionality is useful to manage remotely the
connection and disconnection of the inverter from the grid.
The function must be enabled via Web User Interface and:
- If the remote control function is disabled, the switching on of the
inverter is dictated by the presence of the normal parameters that
allow the inverter to connect to the grid.
- If the remote control function is on, besides being dictated by
the presence of the normal parameters that allow the inverter to
connect to the grid, switching on the inverter also depends on the
state of the two terminals present on the Digital input and RS-485
connector
(12)
.
NOTE –
D
Since this is a digital input, there are no
requirements to be observed as regards cable cross-section
(it only needs to comply with the sizing requirement for
passing cables through the cable glands and the terminal
connector).
When the R ON/OFF and RTN terminals of the Digital input and
RS-485 connector
(12)
are brought to the same potential (i.e. by
using a switch to make a short circuit between the two terminals),
this causes disconnection of the inverter from the grid.
RN
+R
T
-R
T
RS-485
RTN
R ON
/OFF
DRM0
READ THE MANUAL –
E
The external switch used for
Remote ON/OFF should be rated for DC low voltage, low
current application (the minimum switching current capability
should be 1mA or lower).
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