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1 2 5 3 0 / 1 2 5 4 0 O W N E R ' S M A N U A L
P/N 447203 Issue I
II-5
ADDRESSABLE DEVICES
Faraday Addressable Detectors
The control unit processor sends the sensitivity and pre-alarm settings to the detectors and polls the
detectors as to their status. The detector determines normal, trouble, pre-alarm or alarm conditions and
relays the status to the control unit.
Variable Thresholds
The obscuration level for alarm can be adjusted from the control unit on a permanent or time-variable
basis. This facility also means that the control unit can display information on individual points for
maintenance or service.
Operator Alerts
The control unit can trigger an alarm or trouble automatically on the occurrence of a number of conditions
of the detector. These include:
•
Maintenance alert
•
Pre-alarm alert
•
No response
•
Incorrect response
Other Faraday Addressable Devices
Heat Detectors
Addressable heat sensing detectors may be intermixed on the circuit for locations where heat sensing
may be the most effective detection mode. The heat detectors may be programmed, through the control
unit, for rate of rise operation.
Addressable Modules (Monitor and Control)
In addition to detectors, the circuit can communicate with addressable modules, allowing initiating devices
or notification appliances with local power sources, and supervising the power sources.
Manual Stations
Addressable manual stations may be intermixed on the circuit with proper response programmed into the
control unit.
System Sensor Addressable/Analog Sensors
Since an analog fire sensor is essentially a transducer rather than a warning device, all of the operating
controls are included in the control unit processor program. The control unit interprets the pulse widths
from the sensor and determines normal, trouble or alarm conditions.
Variable Thresholds
The obscuration level for alarm can be adjusted from the control unit on a permanent or time-variable
basis. This facility also means that the control unit can display information on individual points for
maintenance or service. These displays include:
Содержание 12530-120
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