Connection
of
Terminal
board.
a. Strip the insulation and shield to a suitable length. Use diagram below as a guide.
(see Figure 4.5).
b.
Remove the cap nut from the waterproof cable glands labeled at the bottom of the inverter.
Remove the plug from the fitting. (see Figure 4.6).
8mm
30mm
Figure 4.5
Figure 4.6
f. Replace terminal block onto interface board.
c. Insert the cable through the cap nut for each port. COM2(RS485 IN) COM3(RS485 OUT).
d. Remove the terminal block on user interface board(See Figure 4.4).
e. Insert the cable into the terminal board and tighten the screws in dotted area(See Figure 4.4).
4.2 PLC Communication
One of the RS485 and PLC
communication
methods
is
available.
For the models with additional PLC communication, switching between PLC
communication and RS485 communication can be realized by flipping the switch
on the communication board as indicated in figure 4.7. Only one communication
method is available during operating. Standard model without PLC communication
doesn't have this switch.
NOTE
WARNING
Must power off the inverter on both AC and DC before switch the
communication method.
Figure . Switch between PLC and RS485
4 7
PLC
is
available
for
multiple
inverter
monitoring.
4. Comm. & Monitoring
4. Comm. & Monitoring
Inverter
PV Strings
Inverter
PV Strings
Inverter
PV Strings
Inverter
PV Strings
Grid
Transformer
PLC
CCO
Datalogger
DC
AC
PLC
RS485
Figure .8 Multiple inverter monitoring system
4
(
PLC
)
.31.
.30.
