I.S. Fieldbus Display

(Links to User Guide, Programming Guide & Interface Guide)

Field Mounting Gas and Dust Certified

Panel Mounting Gas Certified

Fieldbus Foundation and Profibus PA
versions of the BA484DF and BA488CF are available and have been registered by both organisations. The Fieldbus Foundation version now has selectable function blocks allowing use with
most popular system hosts. Configuration files may be downloaded using the links below.

Powered by the fieldbus the BA484DF and BA488CF only require a 2-wire connection, no additional power supply Zener barriers or galvanic isolators are required. The high contrast 86 x 45mm liquid crystal display incorporates a green backlight enabling the display to be read in all lighting conditions from full sunlight to total darkness.

Simple commissioning results from the use of standard display formats. Apart from loading the BA484DF/BA488CF configuration files onto the system host and selecting the fieldbus variables to be displayed, no programming is required. Configuration of the Fieldbus Displays is performed via the fieldbus and the instrument front panel push buttons.

ATEX, FM and IECEx intrinsic safety certification allows the displays to be installed in gas and dust hazardous areas. The two fieldbus terminals comply with the Fieldbus Intrinsic Safety Concept (FISCO) simplifying system design and documentation, although connection to non-FISCO intrinsically safe systems is possible using the entity concept. This allows a BA484DF or a BA488CF display to be directly connected to almost any hazardous fieldbus segment, provided that the segment can supply the 25mA consumed by the display.

Six optional alarm outputs may be linked to any of the displayed variables. Each isolated single pole solid state output may be conditioned as a combined high and low alarm, or as just a high or low alarm. All the outputs comply with the requirements for simple apparatus, which permits them to switch any certified intrinsically safe load such as an intrinsically safe sounder, lamp or solenoid valve.

Custom display screens dedicated to a specific application can be created by writing to the transducer block parameters. Custom designed display screens can contain text in five different font sizes plus lines, boxes, bargraphs, simple graphics and fieldbus process variables. Free programming utilities to assist with screen development are available via the links below.

The four push buttons (six in the case of the BA488CF)  on the front of the instrument may be used for returning operator acknowledgments or controls by reading a  transducer block parameter. If larger industrial switches are required for these acknowledgements, up to six external push buttons may be connected to either display. When the external switches are activated, the front panel push buttons may be disabled or operated in parallel with the external switches.

Comprehensive documentation includes Fieldbus Foundation and Profibus Interface Guides and a Programming Guide that explains how to create custom display screens. See links below.

The enclosure  of the BA484DF is moulded in glass reinforced polyester (GRP), has stainless steel fittings, silicone gaskets and an armoured glass window. Its robust construction provides IP66 protection. A separate terminal compartment allows the BA484DF to be installed and terminated without exposing the display electronics.  The front panel of the BA488CF has IP66 protection and a neoprene gasket seals the joint between the text display and the panel, making it suitable for use in areas that will be hosed.