EN
73
communication line of the final element of the chain by switching
the
(35)
switch to the ON position.
MONITORING
SYESTEM
ON OFF
120.0
TERM.
RS485
RS485
ON OFF
S3
ON OFF
S3
35
35
NOTE –
D
The communication line must also be terminated
on the first element of the chain which normally corresponds
to the monitoring device.
NOTE –
D
It is recommended not to exceed a length of 1000m
for the communication line.
NOTE –
D
The maximum number of inverters that can be
connected to the same RS485 line is 62.
NOTE –
D
In case of longer communication line and/or in case
of a large number of connected inverters to the same line it
could be necessary to add a RS485 amplifier to guarantee
the performance of the communication line.
5.11.5 Serial communication connection
(RS485-Master mode)
NOTE –
D
By default the RS485 port
(38)
is set as Slave mode.
In case the port was set as “Master mode” it must configured
through the Web User Interface (refer to
section) to use the RS485 as a serial communication
line.
The RS485 port can either be used for connecting supported
accessories (like weather station): in this case data from
accessories will be logged and transferred to the cloud by inverter
itself (master mode).
This will allow the inverter to serve as a logger for Fimer accessories.
NOTE –
D
For more information on connecting the accessories
to the RS485 terminal block, refer to the accessory product
manual or contact Fimer customer support.
Connection of the R485 communication line is made using the
terminal block connectors
(38)
(485+, 485-, RTN).
Set the switch of the termination resistance
(35)
to“ON” position.
When an accessory is connected it must be added and configured
into the “Monitored device” list on the Web User Interface
(“CONNECTIVITY > RS485” refer to
paragraph to further information).
J2
X1
X2
S5
S4
J7
J1
J5
J6
1
2
1
8
7
4
3
2
35
38
485+
RTN
485-
485+
RTN
485-
5.11.6 Remote control connection
The connection and disconnection of the inverter to and from the
grid can be controlled through an external control.
The function must be enabled via web server user interface. 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.
J2
X1
X2
S5
S4
J7
J1
J5
J6
1
2
1
8
7
4
3
2
R2
RTN
37
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 R2 terminal compared to the RTN terminal present on
the connector of the terminal block
(37)
of the communication and
control board
(28)
.
When the R2 signal is brought to the same potential as the RTN
signal (i.e. by making a short circuit between the two terminals of
the connector), this causes the inverter to disconnect from the grid.
Since this is a digital input, there are no requirements to be
