WEIS GMBH AA100 Programmable Alarm Annunciator 

WEIS GMBH AA100 Programmable Alarm Annunciator

The AA100 Alarm Annunciator provides the ideal solution to all your alarm system requirements. The innovative and unique design gives exceptional flexibility, reliability and programmability.

However simple or complex your alarm requirement the AA100, with its condensed ASIC technology and ‘no master module’ philosophy, will give the most cost effective solution.

With a range of three window sizes, six colours and a choice of bulb or ultra-bright LED illumination, a format and size will be available to match your exact requirements.

Each individual alarm way is fully programmable from the front, using the integral programming module. This allows for many different features giving thousands of possible combinations.

Numerous relay outputs are included as standard to connect to external equipment and individual repeat relays can be supplied as an option. The ASIC technology utilised in this design has a proven track record in a wide range of industries around the world.

To allow interconnection to remote equipment, the AA100 can be supplied with RS485 serial communications using the MODBUS protocol. This allows the unit to transmit or accept alarm information from PLC, DCS or SCADA systems.

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.