User Manual

NK822x Structure and Functions

Building Technologies

048_DMS_NK8000_ICC_MP4.40_A6V10062437_a_en.doc

Fire Safety & Security Products 06.2011

4.7 I

C interface: I/O and power supervision

This interface allows for a direct support of:

 Direct digital input/output:

 One or two DF8040 (CF9040) input modules

 One DF8020 (CF9020) output module

 Power supply supervision:

 One DF8090 power supply supervision module

All modules can be installed on the DIN-rail, next to NK822x unit.

DF8020

DF8020 is a module providing 8 relay outputs, NO or NC.

DF8040

DF8040 is a module providing 8 inputs, which can be normally open or normally

closed and driven by dry contacts or open collector signals

 See page 33 for more information on the connection of I/O modules to the

NK822x

DF80

90 Power supply supervision

DF8090 is a module designed for monitoring a 12V DC power supply. It can detect

the conditions listed below, shown on the DF8090 local panel (see Fig. 6) and re-

port them to NK822x, and

in turn to management station (see the following):

 Mains failure (no 220VAC)

 Battery low

 Power supply failure (trouble with AC/DC converter)

 Battery protection fuse blown (internal micro-fuse type MSF 3.15A/250V)

Fig. 6 DF8090 front panel

 See Fig. 21 on page 36 for the NK822x power connections using the power su-

pervisi

on module.

 For more information about the DF8000 Input/Output modules, including instal-

lation details, see documents:

DF8000 Datasheet (document no.A6V10081184)

DF8000 ICC (document no.A6V10081388)



DF8090

MAINS

C/DC

LOW

C connector

to I/O modules

LEDs

BATT FUSE