Growatt SPF 3000T HVM-G2 - Communication Connection; Inverter to PC Communication Setup; Dry Contact Signal; Dry Contact Signal Conditions

11
Communication Connection
Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and
follow on-screen instruction to install the monitoring software. For the detailed software operation, please
check user manual of software inside of CD.
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 off and no output is powered
Close
Open
Output is
powered from
Battery or Solar
Battery not in
“LI” mode
Battery voltage <
Low DC Cut-off Voltage +2Vdc
Open
Close
Detected there’s AC input
Close
Open
Battery in “LI”
mode
Battery SOC <
Low DC Cut-off Soc +5%
Open
Close
Detected there’s AC input
Close
Open