Communication Connection; Dry Contact Signal - MPP Solar 2424LV-HS User Manual

Communication Connection

Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and
follow the on-screen instructions to install the monitoring software. For the detailed software operations,
please check user manual of software inside the CD.

Dry Contact Signal

There is one dry contact (3A/120VAC) 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
or Solar.
Power On
Condition
is Program Battery voltage < Low DC warning
01 set as voltage
Utility
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Program Battery voltage < Setting value in
01 is set Program 12
as SBU or
Battery voltage > Setting value in
Solar first
Program 13 or the battery
charging reaches the floating
stage
9
Dry contact port:
NC & C NO & C
Close Open
Close Open
Open Close
Close Open
Open Close
Close Open