User Manual

Hardware Installation

Building Technologies 048_DMS_NK8000_ICC_MP4.40_A6V10062437_a_en.doc

Fire Safety & Security Products 06.2011

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.

NK823x – 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

COM 1 … COM 4: RS232 connectors

RS232 lines are connected to 9pin D-Sub connectors, female type

Pin Assignment

NK822x COM 1-4 NK823x COM 1-2 NK8235.4: COM 3-4

1 CD CD

2 RXD RXD RXD

3 TXD TXD TXD

4 DTR DTR

5 GND GND GND

6 DSR DSR

7 RTS RTS

8 CTS CTS

9 RI RI

DIN Rail installation

The modules are supplied in a plastic box that can be easily attached to the DIN

rail by hooking it on the top of the rail and pressing it in on the opposite side. To

detach the box, pull downward on the tab located at the rear of the module. The I/O

modules are mounted the same way.

Before removing the box, carefully disconnect the flat cable (bus) of the I

C mod-

ule, as well as the power supply cables.

C interface

Fig. 22 NK823x I

C bus addresses

C address settings:

Addr. 8 Addr. 1 Addr. 2 Addr. 3

(Factory setting)