Microprocessor based logic system employs micro-controller chip on one controller module
to cater for eight annunciator points. It is a central processing unit which scans and processes
the input signal at a very high speed and drives the corresponding LED display alongwith audible
alarm to annunciate the fault condition. The fault signals are received from potential free contacts
of various sensors located in the field. The annunciation is displayed as per the operational sequence selected
System reset is provided at rear for controller reset.
The microcontroller IC works on +5V DC regulated supply whereas LED display and relays operates on +12 V DC. The regulated power supply
unit is switch mode power supply which provide highly regulated DC output voltages of +5V and 12V DC. The input supply can be from 90V to 270V AC or DC,
since the SMPS is a universal type. For AC incoming supply linear regulated power supply also can be used.
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