Communication Connection; Dry Contact Signal - MPP Solar 3KW User Manual

Communication Connection

Serial 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.
Bluetooth Connection
This series is built in Bluetooth technology. You may simply go to google play to install "WatchPower". It allows
wireless communication up to 6~7m in an open space.

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
Power Off Unit is off and no output is powered.
Output is powered from Utility.
Output is
powered
from
Battery
power or
Power On
Solar
energy.
Condition
Program 01 Battery voltage < Low DC warning
set as USB voltage
(utility first)
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Program 01 Battery voltage < Setting value in
is set as Program 12
SBU (SBU
Battery voltage > Setting value in
priority) or
Program 13 or battery charging
SUB (solar
reaches floating stage
first)
10
Dry contact port:
NC & C NO & C
Close Open
Close Open
Open Close
Close Open
Open Close
Close Open