Vanderbilt SPC4 Series Installation & Configuration Manual page 235

SPC4xxx/5xxx/6xxx – Installation & Configuration Manual
See also
Calendars on page 287
Outputs types and output ports
Each output type can be assigned to one of the 6 physical output ports on the SPC controller or to an
output on one of the connected expanders. Output types that are not assigned to physical outputs act
as indicators of events on the system and may be logged and/or reported to remote central stations if
required.
The output ports on the expanders are all single pole relay type outputs (NO, COM, NC); therefore,
output devices may need external power sources to activate if they are wired to expander outputs.
The activation of a particular output type depends on the zone type (see Zone types on page 385) or
alert condition that triggered the activation. If multiple areas are defined on the system then the outputs
on the SPC are grouped into system outputs and area outputs; the system outputs are activated to
indicate a system wide event (for example, mains fault) whereas the area outputs indicate events
detected in one or more of the defined areas on the system. Each area has its own set of area outputs;
if the area is a common area for other areas, then its outputs will indicate the state of all the areas it is
common for, including its own state. For example, if Area 1 is common for Area 2 and 3, and Area 2
Ext. Bell is active, then the Area 1 Ext Bell output is also active.
Some output types can only indicate system wide events (no specific area events). See the table
below for further information.
Output Type Description
External Bell This output type is used to activate the system external bell and is active when any Area External
Bell is active. By default, this output is assigned to the first output on the controller board (EXT+,
EXT-).
Note: An external bell output is automatically activated whenever a zone programmed as an
Alarm zone triggers an alarm in Fullset or Partset modes.
External Bell This output type is used to activate the strobe on the system external bell and is active when any
Strobe area strobe is active. By default, this output is assigned to the strobe relay output (Output 3) on
the Controller board (NO, COM, NC).
Note: An external bell strobe output is automatically activated whenever a zone programmed as
an alarm zone triggers an alarm in Fullset or Partset modes. The external bell strobe activates on
a 'Fail to Set' condition if the strobe on the 'Fail to Set' option is checked in system options.
Internal Bell This output type is used to activate the internal bell and is active when any area Internal Bell is
active. By default, this output is assigned to the second output on the controller board (INT+,
INT-).
Note: An internal bell output is automatically activated whenever a zone programmed as an Alarm
zone type triggers an alarm in Fullset or Partset modes. The internal Bell activates on a 'Fail to
Set' condition if the Bell on the 'Fail to Set' option is checked in system options.
Alarm This output turns on following alarm zone activation on the system or from any area defined on the
system.
Alarm This output turns on when an alarm has been confirmed. An alarm is confirmed when 2
Confirmed independent zones on the system (or within the same Area) activate within a set time period).
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