The digital annunciator unit is used in a variety of applications requiring supervision of alarm and signalling contacts in power plants, substations and industrial process installations. The alarm unit is also approved for use in off-shore installations and marine applications. Further, the annunciator unit can be used in any application where on/off signals are to be supervised.
The annunciator unit provides immediate fault recognition, fault identification and visual and audible alarm in an abnormal process situation. The annunciator unit also provides a means for subsequent fault analyses, which means that corrective measures can be carried out without delay and full control of the process can be maintained.
The annunciator units can be used as independent stand-alone units, or they can be connected together via a fibre-optic bus to form complete supervision, event sequence reporting and data acquisition systems.
The annunciator unit is a member of SPACOM, the ultimate integrated secondary equipment system for power systems.
Features:
- Flexible, field-customizable 16-channel annunciator unit
- Alarm channels activated by normally open or normally closed contact
- Four four-output relays, i.e. two for group realarms, one for an audible device and one for the self-supervision system
- Parameter selection and adjustment from front panel or via serial interface
- First-out alarm indication with clear four-digit display on the front panel
- Extensive data communication via the serial interface and the SPA bus
- Sophisticated hardware and software self-supervision system for maximum operational reliability under the most demanding environmental conditions
- Powerful software support for parameterization of the unit via the serial interface
- Member of the SPACOM product family, ABB’s Distribution Automation system and ABB’s Panorama concept
- CE marking according to the EC directive for EMC