Hardware Installation
18
Building Technologies
048_DMS_NK8237_ICC_MP4.40_A6V10316241_a_en.doc
Fire Safety & Security Products
06.2011
27Ah 12V
Vin = Voltage In
Vout = Voltage Out
Batt = Battery
Fig. 10 NK8237 power supply
Caution!
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 and LON connections
Pin Assignment
1
+
PWR 1
2 Earth
3
–
PWR 1
4 Not
used
5 Not
used
6
+
PWR 2
7 Earth
8
–
PWR 2
X2/X3: Ethernet connector
A standard RJ45 connector connects Ethernet. Cat.5 UTP cabling is best suited.
Pin Assignment
1 TX
+
2
TX –
3 RX
+
4 n.c.
5 n.c.
6
RX –
7 n.c.
8 n.c.
Power supply connection
Note the dual power supply input for redundant solutions