Chapter 3: System operation
Vigilant VS1 and VS2 Technical Reference Manual 153
the NACs. The NACs are allowed to sound until the timer expires, after which they are
automatically silenced.
The Auto Signal Silence option
Auto Signal Silence can be enabled when programming the panel. It affects all
silenceable NACs connected to the panel. The elapsed time can be set for 5 to 30
minutes. See “Disabling and enabling devices” on page 156.
The Suite Signal Silence option
The Suite Signal Silence option enables or disables in-suite signal silence for the
selected correlation group. This option affects only silenceable NACs associated with
the correlation groups. For more information on this programming this option, see
“Programming in-suite signal silence” on page 83.
NACs that cannot be silenced
NACs configured as latched outputs cannot be silenced. This includes any device
configured as:
• Continuous Non-Silenceable Latched (Cont NS Latch)
• Supervised Outputs Latched (SupOut Latch)
• Continuous Non-Silenceable Class A Latched (Cont NS ClA Latch)
• Supervised Outputs Class A Latched (SupOut ClA Latch)
In addition, NACs activated by devices programmed as waterflow cannot be silenced
until the activated devices are restored to normal via a panel reset. After the
waterflow device events restore, the Signal Silence button or the auto signal silence
timer can silence the NACs if there are other events causing the NACs to activate.
Waterflow activations do not invoke in-suite signal silence.
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