9
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 is off and no output is powered.
Output is powered from Utility.
Output is
powered
from
Battery
power or
Solar
energy.
Program 01
set as USB
(utility first)
Battery voltage < Low DC warning
voltage
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
Program 01
is set as
SBU (SBU
priority) or
SUB (solar
first)
Battery voltage < Setting value in
Program 12
Battery voltage > Setting value in
Program 13 or battery charging
reaches floating stage
BMS Communication
If connecting to lithium battery, it’s requested to buy a special communication cable. For the detailed BMS
communication and installation, please check Appendix B – BMS Communication Installation.