Smart Alarm 12 is a micro controller based 12
window Annunciator.This annunciator allows for field programmability of operating
sequence(Auto Reset ,Manual Reset ,First Up and Ring Back), grouping Trip / Non
Trip and NO / NC fault input through DIP switches avoiding hard wiring at the site.
This system is designed to sense the current through
heating elements continuously and raise an alarm if current is found to be absent
through anyone of the elements and exactly indicate which one is faulty. Our system
also can take care of avoiding false alarm while the heaters are switched OFF by
an ON/OFF controller.
In certain applications like semiconductor wafer
fabrications, infrared bulbs [IR bulbs] are heavily used. There will be too many
rejections if these bulbs fail during the process. It is required to have a system
which will immediately sense fusing of these bulbs and give alarm without waiting
for the temperature to fall. This is exactly like Heater Failure Annunciator with
slight modification and tuning.
It is used to monitor 48 fuses, potential free microswitch
contact which are in series with each thyristor device. The status of the fuses
(whether fuse is intact, blown or disabled) is displayed on a graphic 320 x 240
pixel LCD module.
The faults (latest 64 ) are recorded in the non volatile memory with date and time
stamped along with Project name , Fuse ID, Fuse Description downloaded by the user.
These stored records can be printed through a serial printer. There are 6 feather
touch keys on the front
panel to give Print command to print faults and Fuse map,
to set Time/Date, to configure fuses (Enable/disable, NO/NC contact), to configure
serial port baud rate, to set password etc. There are 4 Relay Outputs. The 2 relays
for Alarm output which are activated when any one fuse blows in any of the banks
(one relay is redundant). Other 2 relays for Trip output which are activated when
more than one fuse blow in any of the banks (one is redundant).
The Power Plant Annunciation system consists of an annunciation
rack which houses all the Power supply units and Logic cards used for field interrogation.
There are 15 annunciation Displays which are connected to annunciation rack by means of CAT 6 cable.
Each annunciation Display has 32 (8Cx4R) windows. The Field contacts are fed to the annunciation cabinet
by PVC power cable from the Field termination cabinet .There is one Push Button station for a group of 3 Displays.
Each Push Button station has three buttons, Test, Reset and Acknowledge
Features:
- Microprocessor based split architecture type annunciator.
- Remote Display windows.
- Remote push buttons for Test, Acknowledge and Reset.
- Fault Inputs: 480 nos.
- Response time: 40 milli seconds or less.
- Field Interrogation voltage: 48VDC.
- Contact Type: Selectable NO/NC. Contact Type is Field Configurable.
|