FS20 Marine Fire Detection Control Panel
Siemens Industry, Inc. A6V10519176_enUS_b
Building Technologies Division
12.2.4 X604, X605, X606 Jumper
NAC 1 class A/B
Class A/B Setting of the Onboard NAC Circuit
3 - 2 Class A Configures periphery board NAC 1 for class A wiring
1 - 2 Class B Configures periphery board NAC 1-1 and NAC 1-2 for class B wiring
The class A/B configuration of the jumpers on the periphery board must be transferred
in the Engineering tool set. An error is generated if the configuration does not match.
12.2.5 X403 Jumper
Degrade Alarm Silenceable
Degraded Mode Behavior of the NAC Circuit During an Alarm
3 - 2 NONSILENCEABLE When degrade mode is active in the system, and an alarm is present, this
setting prevents the user from turning off the notification appliances.
1 - 2 SILENCEABLE When degrade mode is active in the system, and an alarm is present, this
setting allows the user to turn off the notification appliances. The
notification devices remain switched off in the event of a further alarm.
12.3 Bell Follower Input
The periphery board has an input designed to connect to an external fire alarm control
unit's NAC circuit so that the periphery board's NAC circuits can follow the activation
of the NAC circuits from an external source.
12.3.1 Wiring Specs
NAC is active.
*1- Fire detection device or bell extender.
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