Chapter 2: Front panel programming
Vigilant VS1 and VS2 Technical Reference Manual 69
Device option Description
Night
prealarm%
Sets the nighttime prealarm percentage. Choose Off or 50, 55, 60, 65, 70, 75, 80, or
90 percent.
This sets the amount of smoke that indicates a prealarm event before an actual
alarm event is indicated. The percentage is based on the sensitivity level selected
above. For example, if you choose normal sensitivity and select 50 percent for your
prealarm, when smoke levels reach 50% of the normal smoke level required to
initiate an alarm, a prealarm event will be indicated.
Base type Sets the base type for detectors. Choose standard, relay, isolator, or sounder.
Follow This option controls the conditions that will activate the relay or sounder detector
base. Select from the following values:
Head: The base is controlled by the detector’s settings:
• The base activates when the detector goes into alarm, unless the detector is set
for alarm verification.
• If the detector is set for alarm verification, the base activates when the detector
goes into alarm verification. It does not restore, however, until the alarm
restores.
• The base does not respond when the detector goes into prealarm no matter how
the detector is configured.
• Devices with the base set to follow “Head” cannot be placed in correlation
groups. When a device base is set to follow "Head," the base is removed as an
output from any Correlation Groups to which it belongs.
Alarm: The base activates its relay when the detector goes into alarm. The base will
not restore until the alarm event has been restored.
Alarm and verify (ALM+VFY): The base activates its relay when the detector goes into
alarm verify and continues when the detector goes into alarm. The base will not
restore until both events have been restored.
Alarm and prealarm (ALM+PALM): The base activates its relay when the detector
goes into prealarm and continues when the detector goes into an alarm. The base
will not restore until both events have been restored.
Riser: The base is triggered individually by the loop controller (sounder bases only)
None: A correlation group triggers the base. It can be applied to both relay and
sounder bases and is used for relay bases configured as latched output devices.
Note: All base follow settings except “Head” and “Riser” can be activated by
correlation groups.
Type Select the device type based on the type of device you are programming.
Note: All possible device types are listed below. Available device types are
determined by marketplace, however, so all device types listed here may not be
listed for the device you are programming.
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