UNIQUE FEATURES – UNIQUE BENEFITS

Modular Construction
The unique modular design of the AA100 makes it a simple task to assemble annuniciators of any size to suit a customer’s exact requirements. Hence annunciators can be delivered practically from stock.

ASIC Technology
The AA100 annunciator builds on the success of previous designs using ASIC technology but taking the design to new levels of flexibility.

No Master Module
The AA100 Alarm Annunciator is designed using the unique no master module philosophy. This means that all cards within the system can act as the master controller. If a card fails then only two alarm ways are affected. There is no possibility of a failure of a master CPU or control card causing complete system failure. This feature gives the ultimate in system redundancy and vastly improves the MTBF compared to similar products.

Fully Field Programmable
The user may select from a vast range of different operating functions and alarm sequences including all the standard sequences defined in the ISA publication Alarm Sequences and Specifications S18.1 1979(R1985). Using the integral programming module this is a simple procedure that requires no special tools. All programmed information is stored in EEPROM giving repeatability, total reliability and requiring no battery backup.   

Service From The Front 
All normal servicing and maintenance is carried out from the front of the unit without the need for special tools. This includes bulb/LED removal, legend changes and all programming. When commissioning the unit it is a simple matter to check and amend all programmed settings from the front of the unit without removing any boards, backplates or alarm bezels.

Pre-configured
If specified at the time of ordering, systems can be supplied complete with the film legends, pre-configured and ready to install and commission.

Pushbutton/Programming Module
As standard the bottom right cell is fitted with an integral pushbutton and audible module. This provides six pushbuttons and a 90dB audible together with a power on LED. The rubber keypad is designed for harsh environments with an effective tactile feel to aid operators. It is this keypad that is dropped down to become the programming module when configuring the system, as shown below.

Only 135mm deep
Even with the advanced programming facilities the unit is still only 135 mm deep, a fraction of the depth of traditional annunciator systems.

Auto-mute and Auto-acknowledge
It is a frequent requirement of alarm system to have an automatic mute or even automatic acknowledge after a certain time delay. This is another programmable feature supplied as standard on all units.

Expandable
Each annunciator can be expanded by connection to further annunciator panels by simply adding a ribbon cable connection. Systems consisting of multiple annunciators can also be supplied by simply daisy-chaining annunnciators together using the ribbon cable provided. All first-up information, synchronised flash rates and pushbutton information is commoned together via this cable. This feature requires the option of a factory fitted expansion connector.

Sleep Mode
In unmanned or temporarily unmanned sites it is useful to disable both the visual and the audible outputs. This is a standard feature available on all units. In sleep mode the annunciator works as normal, latching in alarms and driving repeat relays, but the drive to both the lamps and horn are disabled together with the pushbutton inputs. This ensures that when the unit returns to the normal state all the alarm information is available.

INPUTS AND OUTPUTS

Inputs
All inputs are opto-coupled and comply to the stringent requirements of the European directive on electromagnetic compatibility and the low voltage directive. This ensures there is no possibility of false alarms.

The standard input voltage is 24VDC/AC but units can also be supplied with field contact voltages of 48VDC/AC, 110VDC/AC and 225VDC/AC.

Isolated Supply
Isolation is maintained between the supply & the field contact voltage.

Common Outputs
As standard the AA100 has five relay outputs to cover all normal alarm applications. These are as follows:

1. Critical Audible Relay
2. Non – critical Audible Relay
3. Critical Group Relay
4. Non – critical Group Relay
5. Special Function Relay

• Total Group Relay
• Ringback Audible Relay
• First-Up Relay
• Power On/Watchdog Relay

Audible Outputs
The standard unit will be supplied with an integral 90dB(A) audible and two audible relays (critical and non-critical). Each alarm way can be programmed to be in one, both or neither of these two groups. The integral audible will always sound on the critical group.

Group Outputs With Reflash Facility
Two group relays are provided as standard (critical and non-critical). As with the audible relays, each alarm way can be programmed to be in one, both or neither group. Each group relay can also be set to have a reflash facility. This means the first alarm in the group will change the state of the relay and any subsequent alarms within the same group will cause the relay to pulse for approximately 0.5 seconds.

Auxiliary Relays
Each alarm way can be supplied with individual repeat relays. Each relay can be programmed to be energised or de-energised on alarm and both normally open and normally closed contacts are available on customer terminals. The repeat relays can be set to follow the alarm logic, follow the field contact or follow the display.

Connections
All connections are made to the rear of the unit. Two part screw terminals capable of taking 2.5mm2 cable are used.

Remote Pushbuttons
Screw terminals are provided as standard to connect to remote pushbuttons. These will include all six control inputs as provided on the integral pushbutton module.
If it is required, the complete Pushbutton Module can be supplied and fitted remotely to the actual annunciator.

DISPLAY 

Window Sizes
This flexible unit is designed to be fully modular using a cell based structure. Each cell can house:

• One large window (60 x 60mm)
• Two medium windows (60 x 30mm)
• Four small windows (30 x 30mm)

Window sizes can be mixed as required.

Backlit Illumination
Each window is backlit by long life incandescent lamps or ultra-bright LED Assemblies. All colours are available for both lamps and LEDs. These colours are red, amber, yellow, white, green and blue.

GENERAL

Complete Alarm System
Everything is contained within the standard AA100 Annunciator to provide a complete alarm monitoring system. This includes all pushbuttons and a local audible.

First-Up
In alarm annunciation applications it is often essential to know which alarm occurred first in a particular group. To this end, four different first-up sequences and four different first-up groups are available, all user programmable from the front.

Power Supplies
The supply required to power the annunciator is nominally 24VDC. This can be a simple unregulated low cost source as the annunciator itself will provide all the necessary smoothing and regulation. Weis can supply suitable power supplies or DC/DC Converters if converting from other AC or DC voltages including the P673 Battery Backup System.

CE Marked
Designed within the stringent requirements of the European EMC and LVD directives ensures that the annunciatior conforms to the highest standards of both safety and function.

Wall, Panel or Rack Mounting
The standard unit is supplied as a panel mounting version ready for customers to drop into a single cut-out in a panel door. If required Weis can supply the AA100 Annunciator in wall mounting or floor standing cubicles or mounting within standard 19 anodised plates.