3. Installation
.23.
.22.
Figure 3.20 Remove the junction box cover
5) Insert the cable through the nut, sheath, and AC terminal cover. Connect the cable to the
AC terminal block in turn, using a socket wrench.
Tighten the screws on the terminal block.
The torque is
.
7.4-14.6 ft.lbs
Figure 3.21 Wiring with Neutral
3) Leave the AC breaker disconnected to ensure it does not close unexpectedly.
4) Remove the 3 screws on the inverter junction box and open the junction box cover.
Monitoring system for multiple inverters
Multiple inverters can be monitored through RS-485 daisy chain configuration.
Internet
Datalogger
PC monitoring
PV Strings
Inverter
PV Strings
PV Strings
Inverter
Inverter
Figure . Multiple inverter monitoring system
4 1
(
RS485
)
DC
RS485
There are 5 communication terminals on the inverters. COM1 is a
4-pin connector reserved for WiFi/Cellular datalogger. COM2 and COM3 are RS485
connection between inverters and both RJ45 and Terminal block are provided for use .
One of the RS485 and PLC
communication
methods
is
available.
NOTE
4.1 RS485 and PLC communication connection
4. Comm. & Monitoring
Copper terminal of cable
flat gasket
spring washer
nut
Figure 3.19 Copper aluminum transfer terminal
