Pacific Microsystems
Alarm Annunciators
Alarm Annunciators
Alarm Annunciators
Alarm Annunciators

Alarm Annunciators

Microprocessor / Microcontroller Based Alarm Annunciators :-

In the process there may be an alarm or trip condition. This alarm condition or trip condition occurs at a set point of a parameter in the process. To indicate this we manufacture highly efficient, accurate and intelligent Microprocessor Based machine called Alarm Annunciator. An Alarm Annunciator continuously scans these fault conditions, which may occur during any process operation. Fault condition is indicated by flashing of the LED based facia windows of Annunciator and by sounding the audio Hooter and the operator can take necessary corrective action.

Pacific Annunciator can scan all the parameters of the process to report a faulty condition if any. In other words there is no limitation on the number of inputs to the Annunciator & can be tailored according to the process. The Annunciator inputs are programmable and site selectable for NO(normally open) or NC ( normally close) sensing and are isolated optically. We have wide range of annunciator to fulfill different types of requirement.

" We have carried out Environmental and Electrical type tests from ETDC Pune and ERTL Mumbai on our Annunciator Unit."


•  State of art Microprocessor/Microcontroller Based Design.
•  Optically Isolated Fault Inputs
•  Long life and Low Power Consuming Ultra Bright Colour LEDs.
•  Different colours are – Red, Yellow, Green, Amber.
•  Fault Inputs with or without Potential. NO / NC configurable.
•  Output : Potential Free contact for External Hooter
•  First Fault Discrimination
•  Universal Power Pack : 90 to 270 VAC/DC, 24VDC,48 VDC.
•  Different Window Sizes : 30x30, 45x25, 45x45, 55x25, 70x50 mm
•  Flexible Dimensions. Standard or User Specified.
•  Row / Column Combination. Standard or User Specified.
•  With Built-in TEST, ACCEPT, RESET Push Buttons or Provision to connect Externally
•  Number of Windows in single unit : 4,6,8,12,16,20,24,30,32,36,40,48,60,64,72,88,96,100, 120,128
•  Operating Sequence : As per ISA – Auto/Manual Reset, First Up, Ring Back  or as per specific requirement.
•  Mounting : Flush Panel or Wall Mounting Type.
•  Legends  : Photopositive or Photonegative
•  Reliable unit with Negligible Maintenance.

Optional Features

•  Extra Relay outputs – for each channel or group of channels.
•  Trip and Non trip grouping for Hooter and Bell.
•  Split type Architecture – Facia and CPU are Separate.
•  LED Facias with DC inputs, without controller. With different window sizes As that of Alarm Annunciators.­

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Technical Specifications
 Fault Alarm Inputs
 With or Without Potential. NO / NC Site selectable by DIP Switches Optically isolated. Interogation  voltage 12 VDC
 One Potential Free NO contact of Relay for External Hooter.
 Contact Rating 230 VAC, 5A. 220 VDC, 2A.
 Push Buttons
 External TEST. ACCEPT, RESET Push Buttons of NO Type or
 Internal Built-in-Push Buttons.
 Window Indication
 By Super Bright RED LED'S
 Other Colors - GREEN, AMBER, YELLOW.
 Legends - Photo - Positive / Photo Negative.
 Number of Windows
 4, 6, 12, 16, 18, 20, 24, 30, 32, 36, 40, 48, 50, 60, 64, 70, 72, 88
 Other nos. available on demand.
 Flexibility in Size
 To mach customer's cutout dimensions with different Row and Column combination. Separate facia
 and control unit can be provided as per requirement.
 Operating Sequence
 As per ISA Standard - Manual RESET, Auto RESET, First Up,
 Ring Back or any other specific sequence as per requirement.
 Input Aux Supply
 110, 230, 415 VAC +/- 10%, 24, 30, 48, 60 VDC +/- 20% 80 to 270 VDC - Universal Range.
 Power Consumption: Less than 0.9 W per window.
 Response Time
 10 Mill Seconds Approximately.
 Flush Panel Mounting or Wall Mounting Type.
 0 to 60 degrees Centigrade Up to 95% RH non-condensing.
 External Connection
 Terminal Strip suitable up to 2.5 Sq. mm Wire.
 Aluminium / MS Casing with Powder Coated Finish.
To place order specify
•  Number of Windows
•  Supply Voltages
•  Window Size
•  With or without Built in Push Buttons
•  Operating Sequence
•  Window Colours
•  Legend data
•  Quantity
LED Facia
The LED facias operate on 12 VDC to 24 VDC Voltages and can be driven by PLC or DCS systems.The LED facias can be made available in user-defined sizes besides the Standard size of 45 X 45 mm. The facias are also available with other inputs AC / DC Voltages.