Simplex Foundation Series Operation Manual page 27

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Function Description
type
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.
TROUBLE NAC activates when there is a trouble condition active in the system.
NAC is on until trouble condition is cleared or acknowledged.
SUPV NAC activates when there is a supervisory condition active in the system.
NAC is on until supervisory condition is cleared.
QALERT General alarm horn and strobe (horn on-until-silence; strobe on-until-reset).
Use for NAC circuits containing both horns and strobes.
Note: If NFPA NAC is enabled, then horns and strobes turn off, on pressing silenced key
UTILITY NAC activates when an IDC with the following attributes activates:
• IDC must be in same alarm group as utility NAC.
• IDC must be assigned a Utility function type.
Typically used for process monitoring function. For example, a relay on a machine is tied to the IDC.
When the relay activates, the utility IDC activates and triggers the utility NAC.
Coding Description
pattern
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.
Synch Generates synchronization pulse for visual only devices connected to NAC circuits. 120 BPM
Note: A march-time rate of 60 BPM is used, when the QALERT function types are selected and either 20 BPM or 120 BPM is selected as
the NAC coding pattern.
page 25
2008 Foundation Series Fire Alarm Control Unit Operation Guide
Table 10: NAC function types
Table 11: NAC coding patterns
Coding Description
pattern
Steady Steady on
20 BPM Slow march time - 20 beats
in every minute, see note.
Fast march time - 120
beats in every minute, see
note.
579-1401 Rev A