Bosch FCH-T320 - Wiring MS 400;MS 400 B

12 en | Installation Conventional Automatic Fire Detectors
2021.03 | 11 | F.01U.004.377
User manual
Bosch Sicherheitssysteme GmbH
4.4.1 Wiring MS400/MS400B
max. 3 m
C
a1/a2
(LSN -/L..a)
LSN +/L..b
rd
+
bk
–
max. 30 V DC
wh
bk
bk
rd
gn
ye
ye
b1
}
b2
FAA-420-RI
ye yellow, connects to b1/b2 + / L..b (conventional)
wh white, connects to a1/a2 - / L..a (conventional)
rd red, connects to +V
bk black, connects to 0V
gn green, connects to shielding wire
c Indicator output
+V / 0V Terminals for looping through the power supply to subsequent elements
FAA-420-RI Remote Indicator
i
Notice!
When using unshielded cables for the connection of the remote indicator, the maximum cable
length is 3m. No limitation when using shielded cables.