Communication Connection; Dry Contact Signal - MPP Solar 1KVA-5KVA User Manual

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