5 Dry Contact
There’s one dry contact (2A/30VDC) available on the rear panel. It could be used to deliver signal to
external device when battery voltage reached warning level.
Table 5-1
Unit Status Condition
Dry contact port:
NC & N NO & N
Power Off No output is powered Close Open
Power On
Output is powered from Utility Close Open
Output is
powered
from
Battery or
Solar
AC output
source is
"UTI first"
Battery voltage < Low DC
warning voltage
Open Close
Battery voltage > Battery
charging reaches floating
stage
Close Open
AC output
source is
"PV first" or
"BAT first"
Battery voltage < Setting
value in "Battery Low Volt"
Open Close
Battery voltage > Battery
charging reaches floating
stage
Close Open
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