Siemens NK8000 Series Installation, Configuration & Operation page 44

Hardware installation
5
NK823x hardware installation
NK823x power connections
44
Building Technologies
CPS Fire Safety
Note: COM 3 / COM 4 is only available on NK8235.4.
Power connections
Note the dual power supply input for redundant solutions.
X103 X104
Power supply RS485-1
DF8090
WARNING
There is a risk of explosion if the battery is replaced with an incorrect battery type.
Use 27Ah 12V batteries. Dispose of the used battery at a recycling point in
accordance with local environmental standards and regulations.
X103: Power Supply
Power supply Pin
Primary 1
X105
RS485-2
BATTERY
Vin
27Ah 12V
Batt
Vin = Voltage In
Vout
Vout = Voltage Out
Batt = Battery
Power connections.
Assignment
+
POWER
SUPPLY
A6V10062437_a_en
30.01.2019