NFS2-640 Operations P/N 52743:L4 06/10/19 61
NAC Coding Special Zone Operation
A.4 NAC Coding
A.4.1 Overview of Coding
A Coding selection is the Code Type that pulses when the control panel activates a NAC mapped to
Special Zone F8. Special Zone F8 provides coding selections (see Table A.4) that you can list in the
CBE of a NAC. To use a Code Type, program a NAC to list Zone F8 (reserved for a Code Type) in
the NAC CBE list.
The table below contains descriptions of the signals that correspond to each NAC Code Type:
NOTE: Control modules (FCM-1, FRM-1) cannot be coded.
Coding Selection Signal Notes
March Time (default) 120 PPM (pulses Per minute) Default selection for NACs mapped to F8.
Two-Stage Alert signal (20 PPM) or
General Alarm signal (Temporal
pattern)
Alert signal – When an alarm occurs and not activated by
another zone, the output pulses at 20 PPM.
General Alarm signal – If not acknowledged within 5 minutes,
the control panel switches from 20 PPM to Temporal pattern.
California 10 sec. On, 5 sec. Off, repeats n/a
Temporal 0.5 on, 0.5 off, 0.5 on, 0.5 off,
0.5 on, 1.5 off, repeats
Used as a standard general EVAC signal.
Two-Stage Canada
(3 minutes)
Alert signal (20 PPM)
Drill Switch (Alarm Signal Mode
for Canadian Applications)
activation switches to Temporal
pattern
Operates the same as Two-Stage except it will only switch to
second stage:
• by activation of Drill Switch, or
• the three minute timer expires, or
• through a CBE event (General Alarm Z00 plus Zones 1-99 or
Logic Zones 1-20)
NOTE: In Canadian applications ACM-24AT control point is
required for Automatic Alarm Signal Cancel. Acknowledge will
not cancel the Two-Stage Timer.
NOTE: For Canadian applications using Two-Stage with the
ACPS-610, see the ACPS-610 manual for additional
programming instructions.
Two-Stage Canada
(5 minutes)
Alert signal (20 PPM)
Drill Switch (Alarm Signal Mode
for Canadian Applications)
activation switches to Temporal
pattern
Operates the same as Two-Stage except it will only switch to
second stage:
• by activation of Drill Switch, or
• the five minute timer expires, or
• through a CBE event (General Alarm Z00 plus Zones 1-99 or
Logic Zones 1-20)
NOTE: In Canadian applications ACM-24AT control point is
required for Automatic Alarm Signal Cancel. Acknowledge will
not cancel the Two-Stage Timer.
NOTE: For Canadian applications using Two-Stage with the
ACPS-610, see the ACPS-610 manual for additional
programming instructions.
Two-Stage Canada
Manual
Alert signal (20 PPM)
Drill Switch (Alarm Signal Mode
for Canadian Applications)
activation or CBE switches to
Temporal pattern
Operates the same as Two-Stage except it will only switch to
second stage:
• by activation of Drill Switch, or
• through a CBE event (General Alarm Z00 plus Zones 1-99 or
Logic Zones 1-20)
System Sensor Strobe Synchronizes System Sensor ADA horn/strobes.
Gentex Strobe Synchronizes Gentex Horn/Strobes (Applies to NAC on CPU2-
640 only)
Wheelock Strobe Synchronizes Wheelock Horn/Strobes (Applies to NAC on
CPU2-640 only)
Table A.4 F8 Code Types and Audio Signals
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