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4.0 Wiring
When used with a DS9431 , power is
connected to the option bus power terminals
(RA or RB (+), BA or BB (-)). Connection to
24 VDC sources will damage the DS9432.
To control panel 12 VDC power terminals:
DS9400M, terminals RA and BA, Fig. 3
To DS9431 MUX BUS Terminals
(see Figure 3)
For UL Listed fire installations, Normally
Open (N/O) contacts must be used.
DS9431Multiplex Expansion Module
Power
Alarm
1
2
4 5 6
7 8 9
*
0
Clear
Prog
I/O Module for the
DS9431 Multiplex
Expansion Module
For UL Listed fire installations, Normally Open (N/O) contacts must be used.
Page 2
F01U089253-01
+
-
+
-
Figure 2: Wiring the DS9432/B with Separate Powered Detectors
DS9400 FACP
Trouble
Silenced
3
Drill
Silence
Disable
Test
Reset
#
History
Cmnd
Bus + and Bus - are connected to
MUX A terminals for addresses 9 -
128. MUX B terminals are for
addresses 129 - 255.
Figure 3: 4-Wire Smoke Detector Wiring for the DS9432/B and DS9400M FACP
© 2008 Bosch Security Systems, Inc.
POWER
BUS
+ – + – 1
NO
NC
EOL* EOL*
*Fire EOL resistor: 47 k ohm; DS P/N: 28010
To separate powered detectors (other than smoke detectors)
SMK+
SMK-
AUX+
AUX-
Power + may be connected to RA or RB
4-
on the FACP Option Bus terminal strip.
L+
Power - may be connected to BA or BB on
3-
the FACP Option Bus.
2-
L+
1-
12V Power (-)
12V Power (+)
+ –
POWER
Bus (+)
NFPA 72 does not allow redundant/duplicate
ground paths, do not connect wiring to the
BUS (-) terminal on this module for fire
applications. Only the BUS (+) needs to be
connected.
Input Loops
2 3
4 5
NO
NO
NO
NO
NC
NC
NC
NC
EOL* EOL*
EOL* EOL*
24V Smoke Power (+)
24V Smoke Power (-)
DS7432 Eight Input Remote Module
+ –
1
2 3
4 5
6 7
BUS
Smoke
Detector
Smoke
Detector
EOL
Resistor
P/N: 28010
EOL
Relay
DS9432/DS9432B Installation Instructions
6 7
8
NO
NO
NO
NC
NC
NC
EOL* EOL*
8
Example:
DS250 in a MB4W base
Example: EOL200
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