16
AVERTISSEMENT :
Risque d'électrochoc!
Il ne doit y avoir aucun mélange entre les câbles de communication
et les lignes d'alimentation. Séparez-les avec une distance aussi
grande que possible pour éviter un électrochoc.
There are two kinds of communication: RS-232 and RS-485. Please use
matching communication cables and make sure the cables are connected
firmly during data transmitting: the below features are supported with
communication interface:
Monitor each controller on the network using Solar Station PC software;
update the firmware.
RS-232, RS-485 Connection
The controller is a standard 3.81-4P port. Check Figure 1-1 for the port location.
The RS-232 port is 7
th
port and the RS-485 port is 8
th
port on the controller.
④
Power Wires Connection
PV Wire Size
Since PV array output can vary due to the PV module size, connection method
or sunlight angle, the minimum wire size can be calculated by the I
SC
of PV
array. Please refer to the value of I
SC
in PV module specification. When the PV
modules connect in series, the I
SC
is equal to the PV module‘s
I
SC
. When the
PV modules connect in parallel, the I
SC
is equal to the sum of PV module‘s
I
SC
.
The I
SC
of PV array must not exceed the maximum PV input current, please
refer to the table as below:
Model
Max. PV input current
Max. PV wire size
ET4415BND
45A
16mm
2
/6AWG
ET6415BND
60A
16mm
2
/5AWG
ET6420BND
60A
16mm
2
/5AWG
NOTE:
When the PV modules connect in series, the open circuit voltage of the
PV array must not exceed 138V (ET4415BND; ET6415BND) /180V
(ET6420BND) under the 25
℃
condition.
Battery Wire Size
The battery wire size must conform to the rated current, the reference size as
below:
