6 Operator Pushbuttons
6 Optional Local Alarm Outputs
High Contrast Display with Backlight
IP66 Front Panel
BA688CF-P Fieldbus Display is a general purpose 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 BA688CF-P
only requires a 2-wire connection, no additional power supply is
required. The high contrast 86 x 45mm liquid crystal display
incorporates a green backlight that is also powered from the
fieldbus 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 BA688CF-P
configuration files onto the system host and selecting the fieldbus
variables to be displayed, no programming is required. Configuration
of the BA688CF-P Fieldbus Display is performed via the fieldbus and
the instrument front panel push buttons; simple menus enable the
required standard display format to be selected and the units of
measurement and tag information for each variable to be entered.
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. Each output can switch
any low power load such as a sounder, lamp or solenoid valve. Alarm
configuration and the alarm set point adjustment is performed via
the BA688CF-P front panel push buttons, as the local alarms are not
accessible from the fieldbus system host.
BA688CF-P applications vary from a
simple single variable display using a standard format, to providing
an operator interface with a custom display and control inputs via
The six 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 BA688CF-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 field mounting applications see
the BA684DF-P datasheet. This instrument has a similar electrical
specification but is housed in a robust IP66 GRP enclosure suitable
for external mounting.
If flammable atmospheres are present,
the intrinsically safe BA488CF-P fieldbus display should be used.