1-9
Cross-zoned applications require that two automatic initiating devices on different zones enter an
alarm state before the releasing device(s) can activate.
Figure 1-2
illustrates the automatic releasing
sequence following activation of detectors on both zones.
In the example, the first detector enters an alarm state, triggering the activation of the piezo, alarm
relay, and the notification appliances (horns, bells, strobes, etc.) attached to NAC1 and NAC2.
When the second detector enters an alarm state, the system starts an optional Automatic Release
Delay Timer and changes the pattern of audible tones on NAC2 to a faster cadence (evacuation
signal). When the timer expires, the cadence of the NACs changes to “On Steady” and the RACs
activate.
Important Notes:
If the delay timer is set to 0, release immediately follows second (cross-zoned) alarm
activation.
The abort switch can be used only prior to the expiration of the delay timer.
In application 10 RAC2 turns on immediately when the 2
nd
alarm is brought in. This is
the pre-action RAC. RAC1 turns on when the timer expires.
Figure 1-2. Releasing Sequence following Dual Detector Alarm Activation
Continued on next page
Automatic Release
Delay Timer*
(0 - 60 Secs)
NAC1 On Steady
NAC2 Temporal
Activate Alarm Relay
Sound Panel Piezo
Discharge Signals
NAC1 On Steady
NAC2 On Steady
RAC Activation (Agent Discharge)
Evacuation Signal
NAC1 On Steady
NAC2 120 Bpm
1s
t
Ala
rm
Rec
eiv
ed
Ala
rm
Si
lenc
e
Ala
rm
Re
se
t
*If timer is set to 0, release of the agent and
activation of the discharge signals occurs
immediately after activation of second alarm.
A
lar
m Ac
tiv
at
ion of
2nd
A
utomatic
In
itia
tin
g De
vi
ce
Supported Applications,
Continued
Releasing
Sequence for Dual
Detector
Activation
Содержание AutoPulse Z-10
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