Siemens NK8235

Hardware installation
5
NK822x hardware installation
37
Building Technologies
A6V10062437_a_en
CPS Fire Safety
30.01.2019
3. If used, set appropriate I2C addresses for I/O modules:
– Input modules (DF8040) have addresses 1 or 2
– Output module (DF8020) has address 1
– Power supply supervision module (DF8090), factory set to address 8.
4. Connect and install the modules, then connect the I/O points to the modules.
For more information about the DF8000 Input/Output modules, including
installation details, see documents:
DF8000 Datasheet (document no. A6V10081184)
DF 8000 ICC (document no A6V10081388)
5. Connect power supply.
See Figure Power connections if using a DF8090 power supply supervision
module.
WARNING
Do not connect or disconnect any device when the device is powered on!
Top view
Back
1 8 5 1
2
1
1 2 3 4 5
NK822x electrical interfaces (top view)
Item
Name
Description
1
—
LON Status LEDs
2
CN1
Ethernet
3
CN2
Not used.
4
CN3
Power and LON
5
CN4
RS485 (in place of COM1)
Note: Connectors in Figure NK822x electrical interfaces (top view) are valid for
NK8222, NK8223 and NK8225.