Siemens NK8235

Structure and functions
4
NK823x hardware
30
Building Technologies A6V10062437_a_en
Fire Safety & Security Products 30.06.2013
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.
DF8045
DF8045 is a module providing 4 supervised inputs (normally-closed balanced in-puts).
DF8046
DF8046 is a module providing 4 supervised inputs (normally-open balanced inputs)
designed for migration of CS100/DMS7000 Multiplexer systems with B1G030 line
supervision boards.
See NK823x hardware installation [➙ 46] for more information on the c
onnection of I/O
modules to the NK823x.
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 and report 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)
1
2
PW
MAINS
AC/DC
LOW BATT
BATT FUSE
DF8090 front panel
Item Description
1 LEDs.
2 I
2
C connector to I/O modules.
See figure NK823x power connections (see NK823x hardware installation [➙ 46]) for
the NK823x power connections using the power supervision module.