Siemens NK8235

Hardware installation
5
NK823x hardware installation
45
Building Technologies
A6V10062437_a_en
CPS Fire Safety
30.01.2019
2
Earth
3
–
N/A
4
Not used
N/A
5
Not used
Secondary
(optional)
6
+
7
Earth
8
–
X2/X3: Ethernet Connector
A standard RJ45 connector connects Ethernet. Category 5 or 6 UTP cabling is best
suited.
Ethernet connections.
Pin
Assignment
1
TX+
2
TX–
3
RX+
4
n.c.
5
n.c.
6
RX–
7
n.c.
8
n.c.
X101: Onboard I/O (Output Relay)
Onboard I/O (output relay).
Pin
Assignment
1
Common
2
NO output
3
NC output
X102: Onboard I/O (Inputs)
Onboard I/O (inputs).
Pin
Assignment
1
Input 1 (Mains failure)
2
Input 2 (Battery fault)
3
Input 3 (Power supply fault)
4
Common
5
+ Val
6
– Val