Redlogo

EMPACT Series

Communications & Control Equipment

Picture

Back


Picture

Connecting your Graphic Display Annunciator to other systems usually requires an interface between the output signals of the driving system and the graphic display lamps. Many times the interface is unique to the driving system, so a unique interface has to be designed.  In some cases, additional features such as lamp tests, audible alarms, etc., must also be added, which complicates the interface.

The Graphic Interface Unit (GIU) has been developed to solve the graphic display interface problems. The GIU is a microcontroller-based interface circuit board which is mounted on the reverse side of the graphic display and performs the interface functions required. Because the GIU is microcontroller based, interface requirements are handled in software. Software ``patches" are available for most standard interface requirements so your interface can usually be quickly and inexpensively produced. The interface is prepared at the same time as graphic drawings using a Computer-Aided- Design (CAD) system. When CDT provides you the full-size graphic design for approval, you also receive a summary of the interface.   If interface changes are ever required, a replacement PROM can be furnished quickly because a copy of each interface software shipped is archived. 

The GIU will interface up to 128 inputs with up to 128 lamp outputs. Each GIU is expandable to a maximum of 256 inputs and 256 lamp outputs by cascading GIU circuit boards.

An optional RS-232 interface allows the GIU to be controlled by a host computer system.

Closed contact or switching transistor alarm inputs can be either normally closed or normally open. Normally closed inputs can be provided with supervision. Inputs are connected by ribbon cable or metal-to-metal captive screw terminals on an optional paddle board assembly.

Page 1 of 2

    GRAPHIC INTERFACE UNIT (GIU)

Rectangle
  • Interface up to 128 inputs, expandable to 256
  • Optional RS232 interface
  • Closed contact or switching transistor alarm inputs
  • Individual inputs/outputs ``on board"
  • Multiple lamp capability
  • Software controlled lamp interaction
  • ``Off-the-shelf" software available
  • Annunciator programming available

Individual inputs/outputs are provided ``on board" for the following features:

  • Lamp test (from front panel switch or host computer input)
  • Audible alarm (3 different tone outputs)
  • Alarm silence (silence of audible alarm)
  • Alarm acknowledge
  • Alarm reset

Each lamp output is capable of powering up to    4 lamps simultaneously for multiple lamp requirements.

Some applications require the interaction to two or more lamps. Lamp interaction is software controlled and changeable to meet special requirements.

``Off-the-shelf" software is available for most popular applications. Contact the factory for more details on each operation scenario. The following scenarios are currently available.

  • Perimeter alarm (red, yellow, green lamps in zones)
  • Fire alarm (red lamps with yellow lamp trouble indications)
  • Building security (red, or other color lamps, with trouble)
  • Personal alarm (red and green indications)
  • Process control (individual lamps of any colors)
  • Access control (red, yellow, green lamps in zones)

Unique annunciator programming services available. Contact CDT for details.

More

Picture
Rectangle
33408 Sandy Creek Lane, P.O. Box 776, Pine Valley, CA 91962-0776   (619) 478-2600   FAX (619) 478-2555
Copyright © 1998 by CDT
[Home] [Products] [Services] [Company] [Hot Links] [What's New]