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Communication Options
Serial Connection
Please use the supplied serial cable to connect the inverter with your pc. Install the monitoring software from
the bundled CD and follow the on-screen instructions to complete your installation. For detailed software
operation, refer to the software user manual on the bundled CD.
Wi-Fi Connection
This unit is equipped with a Wi-Fi transmitter. Wi-Fi transmitter can enable wireless communication between
off-grid inverters and monitoring platform. Users can access and control the monitored inverter with
downloaded APP.
You may find “WatchPower” app in the Apple
®
Store or “WatchPower Wi-Fi” in Google
®
Play Store. All data loggers and parameters are saved in iCloud. For quick installation and operation, please
check Appendix C.
BMS Communication
It is recommended to purchase a special communication cable if you are connecting to Lithium-Ion battery banks.
Please refer to Appendix B- BMS Communication Installation for details.
Dry Contact Signal
There is one dry contact (3A/250VAC) available on the rear panel. It could be used to deliver signal to external
device when battery voltage reaches warning level.
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off and no output is powered.
Close
Open
Power On
Output is
powered
from Battery
power or
Solar
energy.
Program 01
set as USB
(utility first)
Battery voltage < Low DC
warning voltage
Open
Close
Battery voltage > Setting
value in Program 13 or
battery charging reaches
floating stage
Close
Open
Program 01
is set as
SBU (SBU
priority)
Battery voltage < Setting
value in Program 12
Open
Close
Battery voltage > Setting
value in Program 13 or
battery charging reaches
floating stage
Close
Open