Siemens NK8235

5
Hardware installation
NK823x hardware installation
44
Building Technologies
A6V10062437_a_en
CPS Fire Safety
30.01.2019
Note: COM 3 / COM 4 is only available on NK8235.4.
Power connections
Note the dual power supply input for redundant solutions.
X103
Power supply
X104
RS485-1
X105
RS485-2
DF8090
BATTERY
POWER
SUPPLY
27Ah 12V
Vin = Voltage In
Vout = Voltage Out
Batt = Battery
Vin
Batt
Vout
NK823x power connections
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 connections.
Power supply
Pin
Assignment
Primary
1
+