Acre SPC42 - Outputs Types and Output Ports

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For the output test procedure, see Output Test on page115.

14.12.1 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278) 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

Strobe

This output type is used to activate the strobe on the system external bell and is active when

any 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.

SPC42/52/53/63 – Installation & Configuration Manual Engineer programming via the keypad

08.12.2023