Siemens FT724 - Control

System description
Control
9
148 | 184
Building Technologies
A6V10211076_
i_en_
--
Fire Safety
2015
-
12
-
15
9.5 Control
Alarm events and system events may occur in a fire detection installation. It is the
task of the fire control unit to alert people and/or initiate appropriate actions based
on the different event categories. This is achieved with the different control types:
● ↑ Alarming control
● 'Fire control'
● 'Evac control'
● ↑ Extinguishing control
The alarming control is described in the chapter "Alarm Verification Concept
(AVC)".
Sample control
Figure 21: Sample control function
I Causes
F Control
O ↑ Effects
E Events ('ALARM', 'Fault', 'Isolation', test mode, etc.)
act / deact Activate / deactivate
com Command
Causes are any events such as 'ALARM', 'Fault', 'Isolation', test mode as well as
signal inputs (contacts).
The control has an 'OR / AND / NOT' combination of the causes that have
occurred.
The effects of the control are the activation or deactivation of outputs. The actuated
outputs can be combined with inputs for confirmation.
Effects are also commands within the fire detection system, e.g. for the isolation of
a 'Zone' or for changing a detector parameter set.