MICRO ALARM

MICRO ALARM is an intelligent Alarm Annunciator based on the latest single chip microcontroller technology. Use of LED type window facia ensures low power consumption (less than 50mW per window), heat dissipation and totally eliminates replacement of lamps due to infinite life of LEDs. Serial communication is optionally available to communicate the alarm status to PLC/SCADA/DCS.
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Following are the different types and architectures available in MICRO ALARM.
Hardwired Type
This is the conventional type annunciator, where the field inputs are connected to the annunciator and the unit senses change of state in each of the inputs and initiates the annunciation sequence and hooter for audio alarm. 
Integral & Split Architecture
In integral type the CPU, input circuits, output drivers, power supply and window facia are housed in a single enclosure. In split architecture the window facia is housed in a sleek enclosure to be mounted on the panel front, while the rest are housed in another enclosure which can be located inside the panel. The window drive signals from the CPU are connected to the facia module through a core cable. The split architecture is suitable for applications where panel depth and load on the panel front are the limiting factors.
Field Selection
MICRO ALARM offers site selection by way of DIP switches for selecting the required sequence of operation, NO/NC type of input, station number, baud rate and parity in case of communication.


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Features

Single chip microcontroller technology.
Single chip microcontroller technology.
Opto isolated input circuitry for fault input
4 nos. super bright LEDs per window.
NO/NC type of faults selectable at site.
Annunciation sequence field selectable from one of the four following
Manual Reset, (b) Auto Reset, (c) First Out, (d) Ringback.
Any other custom built sequence can be tailor made on request.
Window size – 45 x 45mm.
Interrogation supply – 24V DC.
Offers Trip / Non-Trip type of faults with different colored windows and two     nos. NO contacts for connecting two hooters with different tones.
Optional DC fail feature and 3rd NO contact for connecting DC fail hooter.
Photo negative or photo positive legends.
Individual legends for each window, replaceable from the front.
Optional communication feature with MODBUS RTU slave protocol.
High Noise immunity.