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Profibus PA Intrinsically Safe Field Display for 8 Variables

Type:   BA484DF-P

 

Intrinsically Safe ATEX, FM, INMETRO, IECEx

4 Operator Pushbuttons

6 Optional Local Alarm Outputs

High Contrast Display with Backlight

IP66 Field Mounting GRP enclosure

The BA484DF-P Fieldbus Display is an intrinsically safe instrument that can display up to eight fieldbus process variables. Eleven selectable standard screen formats contain one, two, three, four or eight variables, with units of measurement, tag descriptions and bargraphs on some screens.

Powered by the fieldbus the BA484DF-P only requires 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-P configuration files onto the system host and selecting the fieldbus variables to be displayed, no programming is re-quired. Configuration of the BA484DF-P Fieldbus Display is performed via the fieldbus and the instrument front panel push buttons.

ATEX, FM and IECEx intrinsic safety certification allows the BABA484DF-P 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-P 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 local 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 allowing them to switch any certified intrinsically safe load such as a sounder, lamp or solenoid valve. Alarm configuration and the alarm set point adjustment is performed via the BA484DF-P front panel push buttons, as the local alarms are not accessible from the fieldbus system host.

The four push buttons on the front of the instrument may be used for returning operator acknowledgments or controls to the fieldbus host. If larger industrial switches are required for these operator controls, up to six external push buttons may be connected to the BA484DF-P. 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 a PROFIBUS Interface Guide.

For panel mounting applications see the BA488CF-P datasheet. This instrument has a similar electrical specification but is housed in a 144 x 72 panel mounting enclosure.

Please specify if Certification Documents, Alarms, Tag Strip, Tag Plate or Pipe Mounting Kit BA392D/BA393 are required when ordering

 

Display
Type 120 x 64 pixel liquid crystal , Size 86.5mm x 45mm, Backlight Powered from fieldbus

Screens
Standard format 1, 2, 3, 4 or 8 variables plus bargraph can include: units of measurement, tag information

Controls
Front panel Four push buttons scroll the indicator display between screens when the BA484DF-P is configured to display more variables than fit onto a single screen. Also used to configure optional local alarms and may be used to return operator inputs to the system host.

External switches
Control may be transferred to six external switches; front panel buttons may be inhibited or operated in parallel. Switch cable Length 5m max

Fieldbus communication
Voltage 9 to 32V (Limited by intrinsic safety parameters) , Current 25mA , Compliant with IEC61158-2 31.25kbits/s Voltage Mode

Protocol
PROFIBUS PA

Function blocks
PROFIBUS PA 8 x AO (Analogue Output), 6 x DI (Digital Input)

Intrinsic safety
Europe ATEX , Code Group II Category 1G Ex ia IIC T5 Ga (Tamb = -40 to 60C), or Group II Category 1D Ex ia IIIC T80C Da (Tamb = -40 to 60C) IP66

 

Dimensions Drawing

 

Wiring Diagram