Siemens NK8222 Installation, Function & Configuration page 27

LEDs
Building Technologies
Fire Safety & Security Products
DF8090 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. 10) and re-
port them to NK823x, 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)
PW
PW
MAINS
MAINS
AC/DC
AC/DC
LOW BATT
LOW BATT
BATT FUSE
BATT FUSE
DF8090
DF8090
1 2 3 4
1 2 3 4
Fig. 10 DF8090 front panel
 See Fig. 21 on page 36 for the NK823x power connections using the power su-
pervision module.
Locally connected DF8000 I/O modules are only supported with NK823x with
build state 10 or higher (NKM8001-A2 mainboard)
 For more information about the DF8000 Input/Output modules, including instal-
lation details, see the documents:
 DF8000 Datasheet (document no.A6V10081184)
 DF8000 ICC (document no.A6V10081388)
NK823x Structure and Functions
1
1
5 6 7 8 9
5 6 7 8 9
048_DMS_NK8000_ICC_MP4.40_A6V10062437_a_en.doc
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I C connector to
I/O modules
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06.2011