- 58 -
000409BG
5 - Installation
If a single inverter is connected to the monitoring system, activate the
termination resistance of the communication line by switching switch
15
(to ON position).
Set a different RS485 address on each inverter of the chain. No inverter
should have “Auto” as its address. An address can be chosen freely
from out of 2 to 63.
The address on the inverter is set through the display and the push-
button panel (see relevant chapter).
We recommend not exceeding a length of 1000m for the communication line.
No more than 62 inverters can be connected to the same RS485 line.
When using an RS-485 connection, if one or more inverters are added
later to the system, you must remember to return to OFF position the
switch of the termination resistance used of the inverter that was previ-
ously the last one of the system.
Each inverter is dispatched with two (2) as the predened RS485 ad-
dress and with switch for setting termination resistance
15
to OFF posi-
tion.
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 in the relevant menu. 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 operating, besides being dictated by the
presence of the normal parameters that allow the inverter to connect to the
grid, the switching ON of the inverter also depends on the state of the R+
terminal compared to the R- terminal present on the connector
13
.
When the R+ signal is brought to the same potential as the R- signal (i.e.
by making a short circuit between the two terminals of the connector),
this causes the inverter to disconnect from the grid.
The remote control OFF condition is shown on the display.
The connections of this control are made between the “R+” input and
“R-”.
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).
+WT
-WT
N.C.
C
N.O.
+R
-R
RTN
+T/R
-T/R
RTN
LNK
ALARM
WIND
RS485
REM
13
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