APT VEYRON E 8KW - Dry Contact Signal; BMS Communication

12
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
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 Battery
power or
Solar energy.
Program 01
set as USB
(utility first)
or SUB (solar
first)
Battery voltage < Low DC
warning voltage
Open
Close
Battery voltage > Setting
value in Program 13 or
battery charging reaches
floating stage
Close
Open
Program 01
is set as SBU
(SBU priority)
Battery voltage < Setting
value in Program 12
Open
Close
Battery voltage > Setting
value in Program 13 or
battery charging reaches
floating stage
Close
Open
BMS Communication
It is recommended to purchase a special communication cable if you are connecting to Lithium-Ion battery
banks. Please refer to Appendix II- BMS Communication Installation for details.