Pre-Alarm, Dual Criteria Logic Functions, And Percent Per Foot Obscuration - Siemens MXL-IQ Operation, Installation, And Maintenance Manual

Pre-alarm, Dual Criteria Logic
Functions, and Percent Per Foot
Obscuration Features
The pre-alarm feature provides an early
warning of smoke conditions at a more
sensitive reading than alarm level. This
indication can be in the following form:
• a displayed and printed pre-alarm
report
• output logic control
• both
Dual criteria logic allows for the distinction
between the chamber or thermal detector
of the ILPT-1 photo thermal.
The pre-alarm and dual criteria logic
function (ILPT-1 only) features of the ILI or
ILP series of detectors are enabled by the
FPI-32 Field Programmer.
Note: FPI-32 Rev. 1.3 or higher is
required.
The FPI-32 also gives these detectors new
unique IDs so that they can be identified at
the MXL-IQ as different from the ID-60I and
ID-60P series. The ID-60I and ID60P
detectors still exist in the CSG-M, but the
features described in this appendix do not
apply to them.
CSG-M Software
ILI ion detectors and ILP photoelectric
detectors are available as I/O device types
for ALD-2s (or ALD-2Is). These device types
tell the CSG-M and the MXL-IQ that they
have the features of pre-alarm, dual criteria
(photo thermal only), and ability to display
readings in percent per foot (%/ft) obscuration.
These detectors appear in the CSG-M with
the existing ID-60I and ID-60P detectors.
The MXL-IQ's Custom Software Generator
(CSG-M) allows the installation of the ILI or
ILP detectors at any valid ALD address.
Pre-alarm
Pre-alarm must be selected to either
annunciate a detector's pre-alarm or use
the detector in a Criteria Selection function.
Pre-alarm can be enabled at each device
when it is installed as a Yes/No (Y/N) option.
The CSG-M provides the following system
options for pre-alarm:
• annunciate (Y/N)
• automatic adjust (Y/N)
• annunciation type – trouble
• learning period (1 - 30 days)
• activate detector LED (Y/N)
Appendix M
M-1