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INSTALLATION AND OPERATING INSTRUCTIONS · HSI
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Dry Contact Signal
There is one dry contact (3 A/250 VAC) available on the rear panel . It could be used to de-
liver signal to external device, e .g . generator, when battery voltage reaches warning level .
Unit
Status
Condition
Dry contact port
NC & C
NO & C
Power Off
Unit is off and no output is powered
Close
Open
Power On
Output is powered from Utility
Close
Open
Output is
powered
from
Battery or
Solar .
Program
01 set as
Utility
Battery voltage < Low DC
warning voltage
Open
Close
Battery voltage > Setting
value in Program 09 or
battery charging reaches
floating stage
Close
Open
Program
01 is set as
SBU Solar
first
Battery voltage < Setting
value in Program 08
Open
Close
Battery voltage>Setting val-
ue in Program 09 or battery
charging reaches floating
stage
Close
Open