COMPALARM A Alarm annunciator rack mounting

Version for installation in electrical boards, with two different options, as a prewired execution and a splitted execution

The Compalarm A alarm annunciator has a modular design (expandable rack mounting) and it’s used to inform the operator that a process has gone beyond set limits using a visual and audible alarm. Compalarm A systems are built using standard racks with frontal access to the associated logic boards and terminals connection. All terminals are suitable for a maximum of 2.5 mm2 of wire and each terminal block can be removed to facilitate installation. The AC65 alarm board is also provided with a RS-485 interface with Modbus RTU protocol to consent the integration in supervision systems.
Description • Programmable alarm annunciator • Rack housing • Up to 6 alarm inputs • Built-in RS485 interface (Modbus RTU) • Outputs relay connections • Programmable alarm sequences (A, F1A, F3A, F1M, M, M5, R8) • First-out detection • Remote pushbuttons (ACK, RESET, TEST) • Programmable function TEST key (Lamp test or functional test) • Each channel programmable from dipswitch

 

 

The system is composed by:

　

1) Alarm card

2) Power supply and flashing card

3) Relay card

4) Timing card

5) Card holder unit

6) Power transformers and Dc/Dc converters

7) Signalling cells, SQ type (with LED on request)

　

It’s available in 2 different executions:

          -        The first one being supplied with its various components unassembled, but fitted with their corresponding wiring terminals.

          -        The second is being supplied as a prewired solution in a flush mounting rack.

 

The first solution is the most versatile either for assembling or displaying.

As far as its operation is concerned, the alarm unit (optical and acoustic signalling) is excited, when its input contact changes its status ( i.e. When it changes from open or nor­mal condition to close or alarm condition).

The alarm action behaviour follows the detailed patterns given in the ISA selection table, at the page 5, according with the selected sequence.

The system is also fitted with terminals for wiring external push-buttons for:

-  Sequence test, in order to control the system’s efficien­cy.

-  Acknowledge, in order to intervene on the siren during its normal operation.

-  For resetting the cards, which memorize the tripping of the functions.

An interesting feature of the COMPALARM A, are the inter­connections available at its splittable terminal, which makes the wiring much easier, as it allows to wire the terminal block detached from the card.

The particular position of the terminal block allows also to optimize the available space at the board

ELECTRICAL CHARACTERISTICS

• Auxiliary power supply: 24, 48, 110, 220, 380
• Operating contact voltage: 18 ÷ 38 V
• Current input: 4mA aproximately
• Optical signalling output: 250 mA max
• 1 change-over contact for acoustic signalling 10 A - 250 V a.c. Resistive load 
• Output relay for remote control 1 change-over 10 A - 250 Va.c. Resistive load 
• Remote repeating output relay (for all points) 1 change-over load 10 A - 250 Va.c. Resistive
• Static output for remote control of the relay 24 Vc.c - 250 mA max
• Flashing frecuency: slow frequency 1÷1,5 Hz, fast frequency 2÷3 Hz

 

TABLE OF SEQUENCES

• A
• A-5
• A-4
• A-4-5
• R8
• M
• M-5