Introduction
The AIS750 Series Alarm Annunciator system is an unparallel, modular and dual operation mode
Annunciator, designed to give indication of an alarm condition, or equipment status, where a
high degree of reliability and fl exibility is required.
The Annunciator is made of universal cells being 75 x 50mm and comprising one large window,
two medium (Vertically or horizontally) or four small windows. These cells can be assembled in
an array to provide the number of rows and columns required to suit individual panel designs.
These alarm windows are driven from Four-channel Logic (Alarm) Cards and each window is
illuminated by “plug-in” LED Modules providing a maintenance free solution. The fi nished window
array is housed within an attractive aluminum frame which gives a modern fl ush mounting
appearance and allows the annunciator to be mounted in a single cut-out.
The AIS750 supports two operation modes:
- Stand-alone (standard) mode: In Standard Mode, the Serial communication feature is
disabled and system works as a stand-alone unit. No unique address needed for cards in this
mode and generally, Stand-alone mode is recommended if no serial communication needed
with other devices. All settings will be done by DIP switches and jumpers in this mode.
- Serial mode: In Serial mode, each card in the system has its own unique address. All
settings should be done through ALCON software in this mode. Selection of features is on
a per channel basis with no special tools or programming knowledge required. System can
communicate with other Annunciators, Cotroller and devices such as a computer in this mode.
The AIS750 Series Alarm Annunciator is fully programmable for a whole range of different
sequences and functions as listed in the ISA Publication “Annunciator Sequences and
Specifi cations
ISA-S18.1/1979 (R1985)
”.
All Logic Cards are generally interchangeable within the annunciator, so stocking requirements
are minimized. As the system is fully fi eld-programmable, the operating specifi cation of both
alarm sequence and functions can be changed during commissioning or at a later date after the
equipment is installed.
AIS750 Series Annunciators
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