Based Alarm Annunciator:
Any complex manufacturing process or equipment needs close monitoring;
it is effectively done by employing Annunciation System. The
system provides audio and visual indication of faults. Advanced,
highly reliable and compact microcontroller based Alarm Annunciation
System. The system offers annunciation with signaling and auxiliary
(open collector) outputs. Annunciation inputs are connected
to potential free contacts. When fault condition occurs in any
one of the connected inputs, annunciator indicates the fault
by flashing respective window and energies Hooter Relay. The
AB/ABM series input have sits selection facility for "NO
(make to alarm) and "NC" (break to alarm). User can
connect aHooter through relay for Audio Alarm. Facility to connect
external "Test, Accept & Reset push buttons is available.
Dual rate flashing is provided for differentiating the first
& subsequent faults.
Up to 32 Annunciator units can be surveyed & controlled
by Software package (SCADA with Modbus I/O Driver) faults at
each Alarm Annunciator are logged by the software in a computer
file, which can be used later for analysis. The connection from
the PC to the units is via 2 wire RS -485 Bus, using standard
RS-485 twisted pair shielded communications cable.