Edwards EST4 - Page 65

P/N 3102309-EN • REV 001 • ISS 18JUL19 57
Glossary
T
erm Definition
active
Points that are in an alarm state.
activate
To turn on or energize. Pertains to outputs (including logical outputs).
AHJ
Authority Having Jurisdiction
alarm
The state of a fire alarm initiating device that has detected a smoke or fire condition.
card
See module.
Central
Control Station Terminology used to identify a command center that may or may not reside in a
notification control area, but it can control audio over its own or multiple NCAs.
CMS
Central Monitoring Station
Command Center
Command centers are used to control audio within a Notification Control Area (NCA). The
command center resides in a notification control area and it is the control unit used to
request, grant, or deny control of the audio operation of an NCA, whether the one in
which it resides or another NCA when the command center is a central control station.
CU
Configuration Utility. 4-CU software lets programmers configure and program an EST4
control unit.
database
User-defined, permanently stored, system parameters containing system definitions,
device types, responses, messages, etc.
device
Circuits, buttons, or LEDs that exist on the chassis rail or UI frame assembly and all
addressable devices connected by field wiring.
disable
Prevents an input, output, or system feature from functioning.
enable
Permits an input, output, or system feature to function.
EVAC
Emergency Voice/Alarm Communications
group
A collection of Signature devices that is treated as a single entity for programming
purposes.
input
A signal generated by a field device and sent to the control unit for evaluation and
responses as determined by the system database. Inputs to the system are detectors,
modules, and switches.
label
A unique identifier for a device.
loop
The wiring that connects devices to the fire alarm control unit.
module
Modules (cards) installed on the backbox chassis rail and control-display modules
installed on the inner door UI frame assembly.
NCA
See Notification Control Area.
n
ormal state The system is in a quiet state. The LCD screen shows no event messages.
node
A control unit used to monitor system inputs for status changes and activate system
outputs.