Table 9: NAC function types
Function
type
Description
Function
type
Description
SSIG
General Alarm (on-until-silence).
Use for NAC circuits containing only audible devices.
If you use NAC circuits to connect external sync
modules, set coding pattern as Steady.
RSIG
General Alarm (on steady-until-reset).
If you use NAC circuits to connect visual-only devices,
set coding pattern as Sync.
If you use NAC circuits to connect external sync
modules, set coding pattern as Steady.
QALERT
General Alarm Horn/Strobe (Horn on-until-silence;
Strobe on-until-reset).
Use for NAC circuits containing both horns and
strobes.
Note: If NFPA NAC is enabled (active), then both
horns and strobes will turn off on pressing silenced
key.
Table 10: DIP switch setting for NAC coding pattern configuration
DIP switches 3 through 5
NAC-1
NAC coding pattern
SW2-3 SW2-4 SW2-5
Temporal 0 0 0
Sync 0 0 1
Steady 0 1 0
20 BPM 0 1 1
120 BPM 1 0 0
- 1 0 1
- 1 1 0
- 1 1 1
Table 11: NAC coding patterns
Coding
pattern
Description
Coding
pattern
Description
Steady Steady On
Temporal
Standard Temporal coded pattern.
A three pulse coding pattern consisting of three
1/2 second pulses, each separated by 1/2 second
silence. Each group of three pulses is separated by
1.5 seconds of silence.
20 BPM Slow March Time - 20 beats per minute (See note)
Synch
Generates synchronization pulse for visual only
devices connected to NAC circuits.
120 BPM Fast March Time - 120 beats per minute (See note)
Note: 60 BPM March-Time rate is used when both the QALERT function types are selected and either 20 BPM or 120 BPM is selected as
the NAC coding pattern.
Figure 3: DIP switch SW2 settings
Note: NAC is enabled and configured for QALERT function type with Temporal coding pattern. Both Silence/ Rest Inhibit and Alarm
Cutout Timer features are enabled. See Figure 3.
• Use DIP switch SW2-6 to enable or disable the Silence/Reset Inhibit feature.
The default switch position is OFF. To enable this feature turn the switch position to ON.
• Use DIP switch SW2-7 to enable or disable the Alarm Cutout Timer feature.
The default switch position is OFF. To enable this feature turn the switch position to ON.
page 13 579-1403 Rev A
2004 Foundation Series Fire Alarm Control Unit Operation Guide