Siemens NK8237 MP4.81-02 - Page 25

Hardware installation
5
NK8237 hardware installation
25
Building Technologies
A6V10854379_a_en
CPS Fire Safety
25.01.2019
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
NK8237 power connections