BEKA BA488CF User manual

Issue: 8
8th May 2006
BA488CF
Intrinsically safe
Panel mounting
Fieldbus Display
Issue: 8

2
1. Description
1.1 Documentation
1.2 Version 2.0 firmware
2. Operation
2.1 Controls
3. Intrinsic Safety Certification
3.1 ATEX certificate
3.2 Zones, gas groups and T rating
3.3 Fieldbus connection
3.4 External switches
3.5 Alarm outputs
3.6 Certification label information
4. System Design for Hazardous Area
4.1FISCO Systems
4.2 Non FISCO Sysems
4.3 External switches
4.4 Alarm outputs
5. Installation
5.1 Location
5.2 Installation procedure
5.3 EMC
6. Display & Alarm Configuration
6.1 Default configuration
6.2 Accessing the display configuration
menus
6.3 Configurable functions
6.3.1 Screens (Display format)
6.3.2 Input settings
6.3.3 Tags
6.3.4 Units
6.3.5 Alarms
6.3.5.1 Alarm Summary
6.3.5.2 Alarm Activation
6.3.5.3 Alarm Output
6.3.6 Display
6.3.6.1 Settings
6.3.6.2 Quick Access
6.3.6.3 Access Code
6.3.7 Keys
6.3.8 Code
6.3.9 Unit Info
6.3.10 Defaults
6.3.10.1 Display Defaults
6.3.10.2 Interface Board
Defaults.
6.3.10.3 FF Revisions 1 & 2
6.4 Quick Access Menu
7. Programming
8. Maintenance
8.1 Fault finding during commissioning
8.2 Fault finding after commissioning
8.3 Servicing
8.4 Routine maintenance
8.5 Guarantee
8.6 Customer comments
9. Accessories
9.1 Tag number
9.2 Fieldbus Display - Programming Guide
9.3 Fieldbus Interface Guides
10. Index
Appendix 1
FM Approval for use in the USA
Appendix 2
IECEx certification
The BA488CF is CE marked to show compliance with the
European Explosive Atmospheres Directive 94/9/EC
and the European EMC Directive 89/336/EEC
CONTENTS

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1. DESCRIPTION
The BA488CF Fieldbus Display is an intrinsically
safe instrument that can display up to eight
fieldbus process variables, together with their
units of measurement and tag information. The
instrument is bus powered so no additional power
supply is required.
Two versions are available, one for Profibus PA
and the other for Fieldbus Foundation systems.
The Foundation Fieldbus version may be ordered,
or configured on-site, with alternative function
blocks allowing use with most Fieldbus
Foundation hosts.
Order Communication Function
Code Protocol Blocks
BA488CF-P Profibus PA Eight Analogue Outputs
(8 x AO)
BA488CF-F Fieldbus Revision 1
Foundation One Multiple Analogue
Output
(1 x MAO)
or Revision 2
Two Input Selectors
(2 x IS)
The required Device Description files, which may
be downloaded from the Fieldbus Foundation or
BEKA web sites, depend upon which BA488CF-F
revision is selected.
The instrument’s communications protocol is
shown on certification information label located on
the top outer surface of the enclosure.
Nine selectable standard display formats enable
one, two, three or four process variables, some
with bargraphs to be displayed on one screen.
Alternatively, custom display formats including
text and simple graphics may be generated and
saved in permanent memory.
The six front panel push buttons that control the
instrument display may also be used for returning
operator acknowledgements, thus enabling the
Fieldbus Display to function as a simple operator
interface. If larger industrial push buttons are
required for entering these acknowledgements, up
to six external switches may be connected to the
BA488CF. These switch inputs may also be
used for returning the status of plant contacts.
The Fieldbus Display can be supplied with six
optional alarm outputs that may be linked to any
of the displayed fieldbus variables.
The instrument has been certified intrinsically safe
by European Notified Body Intertek Testing
Services (ITS) to the ATEX Directive 94/9/EC.
For use in the USA the instrument has intrinsic
safety and nonincendive FM Approval – see
Appendix 1, plus IECEx intrinsic safety approval
for international applications – see Appendix 2.
Housed in a robust 72 x 144 panel mounting DIN
enclosure, the BA488CF Fieldbus Display has an
IP66 front panel and is supplied with a gasket to
seal the joint between the instrument and the
panel.
1.1 Documentation
This instruction manual describes system design,
conditioning and installation of the BA488CF
fieldbus display. For detailed programming
information please refer to the following guides
that can be downloaded from the BEKA website
www.beka.co.uk
Foundation Fieldbus Display – Fieldbus Interface
Guide
Profibus Display – Fieldbus Interface
Guide
Fieldbus Display – Programming Guides
1.2 Version 2.0 firmware
This manual describes the enhanced features of
BA488CF fieldbus displays employing version 2.0
firmware that was released in December 2005.
Namely:
Standard screens increased from 4 to 9
Multiple bargraph limits added
Input scaling added
Fieldbus Foundation version now has choice
of fieldbus function blocks:
Revision 1 1 x MAO (multiple analogue
output)
Revision 2, 2 x IS (Input selector)
Selection can be made on-site.
The instrument’s firmware version can be
established using the ‘Unit Info’ function in the
main configuration menu – see section 6.3.9 of
this manual.
BA488CF displays employing version 2.0
firmware are backwards compatible with all earlier
versions of the instrument.

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2. OPERATION
Fig 1 shows a simplified block diagram of the
BA488CF Fieldbus Display. When the optional
alarms and external switches are not used, the
instrument only requires a two-wire connection to
the fieldbus.
How much of the BA488CF configuration can be
performed via the fieldbus depends upon the
instrument version and the system host.
Parameters that can not be configured via the
fieldbus can be set via the six front panel push
buttons. Menus enable the required standard
display format to be selected and the units of
measurement, plus tag information for each
displayed fieldbus variable to be entered. Each
fieldbus variable may be individually offset and
scaled, and when a standard screen including a
bargraph is selected, the limits of each bargraph
can be set. Alarm function and setpoints can also
be configured.
Fieldbus configuration files for the BA488CF may
be downloaded from the appropriate Fieldbus
Foundation or Profibus web sites, or from the
BEKA associates web site at www.beka.co.uk.
Fig 1 Simplified block diagram of BA488CF
2.1 Controls
The user can scroll through the display screens by
operating the Up or Down push-buttons. The
number of screens available depends upon how
the BA488CF display has been configured. If one
fieldbus variable per screen has been configured,
eight screens will be present; if four fieldbus
variables per screen have been configured, only
two screens will be available.
Irrespective of the number of fieldbus variables
assigned to the BA488CF, the instrument always
has provision for displaying eight variables.
Unassigned inputs are displayed as zero with a
bad data warning i.e. light digits on a dark
background. When a custom display format,
which requires programming is used, the number
of fieldbus variables displayed may be defined.
If enabled, operating the Pand Up push buttons
simultaneously activates the Quick Access Menu,
allowing the user to adjust the display contrast
without providing access to any of the other
configuration parameters. Additional security may
be provided by an optional access code.

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3. INTRINSIC SAFETY CERTIFICATION
3.1 ATEX certificate
The BA488CF has been issued with EC-Type
Examination Certificate by Notified Body Intertek
Testing Services (ITS) confirming compliance with
the European ATEX Directive 94/9/EC for Group
II, Category 1, gas atmospheres, EEx ia IIC T4.
The instrument bears the Community Mark and,
subject to local codes of practice, may be installed
in any of the European Economic Area (EEA)
member countries. ATEX certificates are also
acceptable for installations in Switzerland. This
manual describes installations which conform with
BS EN60079:Part14:1997 Electrical Installation in
Hazardous Areas. When designing systems for
installation outside the UK, the local Code of
Practice should be consulted.
3.2 Zones, gas groups and T rating
The BA488CF has been issued with EC Type
Examination certificate ITS04ATEX22779
confirming that it complies with the requirements
for Group II Category 1 G EEx ia IIC T4 (Tamb –
40 to 60oC) specified in the ATEX Directive.
When connected to a suitable system the
BA488CF may be installed in:
Zone 0 explosive gas air mixture
continuously present.
Zone 1 explosive gas air mixture
likely to occur in normal
operation.
Zone 2 explosive gas air mixture not
likely to occur, and if it does
will only exist for a short time.
Be used with gases in groups:
Group A propane
Group B ethylene
Group C hydrogen
Having a temperature classification of:
T1 450oC
T2 300oC
T3 200oC
T4 135oC
At an ambient temperature between –40 and
+60oC.
Note: the guaranteed operating temperature
range of the Fieldbus Display is –20 to +60oC
This allows the BA488CF to be installed in all
Zones and to be used with most common
industrial gases.
3.3 Fieldbus connection
The BA488CF Fieldbus Display is powered and
communicates via the fieldbus, which is
connected to terminals 1 and 2. These terminals
comply with the Fieldbus Intrinsically Safe
Concept (FISCO) defined in IEC 60079 Part 27
which simplifies intrinsic safety system design.
The BA488CF may also be connected to non
FISCO compliant fieldbus segments by using the
entity concept to assess safety.
Terminals 1 and 2 of the BA488CF Fieldbus
Display are not polarised and have the following
safety parameters:
Ui = 17.5V dc
Ii = 380mA dc
Pi = 5.32W
For non FISCO compliant segments, the safety
parameters of the power supply or isolator
powering the fieldbus segment must be equal to
or less than these figures.
The maximum equivalent capacitance and
inductance at terminals 1 & 2 of the BA488CF
Fieldbus Display are:
Ci = 1nF
Li = 8µH
To determine cable parameters for non FISCO
compliant segments, the sum of Ci and Li of all
the field devices should be subtracted from the
maximum cable parameters permitted by the
device powering the fieldbus segment.
3.4 External switches
For applications requiring operator inputs to be
made by large industrial push buttons, terminals
S1 to S7 facilitate external switches to be
connected to the Fieldbus Display. When
external switches are connected, the BA488CF
may be configured so that the front panel push
buttons continue to function or are disabled.
Terminals S1 to S7 have the following combined
output safety parameters:
Uo = 14.7V dc
Io = 146.7mA dc
Po = 0.58W
The switches and associated wiring connected to
the terminals must comply with the requirements
for simple apparatus. i.e. the switch must be
mechanically activated and have IP20 protection,
and both the switch and the wiring must be
capable of withstanding a 500V rms insulation test
to earth for one minute. Most industrial push
buttons and wiring satisfy these requirements.
The input safety parameters of terminals S1 to S7

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are zero, therefore only switches or intrinsically
safe relays may be connected.
The total maximum permitted cable parameters
for all the cables connected to terminals S1 to S7
in a IIC hydrogen gas must be less than:
Co = 0.22µF
Lo = 0.26mH
Although these parameters are not restrictive, for
reliable operation it is recommended that the
cables between the fieldbus display and the
external push buttons are less than 5m long.
3.5 Alarm outputs
Each of the six alarm outputs is a separate
galvanically isolated solid state switch. The EC-
Type Examination Certificate specifies that under
fault conditions the voltage, current and power at
each switch output will not exceed those specified
for simple apparatus in Clause 5.4 of
EN50020:2002. This allows each of the BA488CF
alarm outputs to be connected to any intrinsically
safe circuit protected by a certified Zener barrier
or galvanic isolator providing that the output
parameters of each circuit are less than:
Uo = 28V dc
Io = 200mA
Po = 0.84W
The maximum equivalent capacitance and
inductance of each BA488CF alarm output is:
Ci = 40nF
Li = 20µH
To determine the maximum permissible cable
parameters, Ci and Li must be subtracted from the
maximum cable capacitance and inductance
specified by the system certificate of the circuit
connected to the switch.
3.6 Certification Label Information
The certification label is fitted in a recess on the
top outer surface of the enclosure. It shows the
ATEX certification information, a statement that
the instrument is a FISCO Field Device, plus
BEKA associates name and location. Non
European certification information may also be
included.
4. SYSTEM DESIGN FOR HAZARDOUS
AREAS
4.1 FISCO Systems
The BA488CF may be connected to any FISCO
compliant fieldbus segment providing that the
power supply or isolator powering the segment
can provide 25mA required by the BA488CF
Display.
Fig 2 shows a typical fieldbus segment. To
comply with FISCO requirements, the power
supply, terminators, field devices and the
interconnecting cables must conform with
IEC60079 part 27.
Fig 2 FISCO fieldbus system
4.2 Non FISCO Systems
If the BA488CF Fieldbus Display is to be
connected to a fieldbus segment that does not
comply with FISCO requirements, the safety
parameters of the power supply and the Fieldbus
Display must be compared using the entity
concept.

7
The maximum output safety parameters of the
device powering the fieldbus segment must be
equal to, or less than, the input safety parameters
of terminals 1 & 2 of the BA488CF Display,
namely:
Ui = 17.5V dc
Ii = 380mA dc
Pi = 5.32W
The maximum permitted cable parameters for the
fieldbus segment must be reduced by the
equivalent internal capacitance Ci and inductance
Li of the BA488CF. The BA488CF equivalent
capacitance and inductance are very small and
make little practical difference.
Ci = 1nF
Li = 8µH
4.3 External switches
For applications requiring operator inputs to be
made by large industrial push buttons, terminals
S1 to S7 allow up to six external switches to be
connected to the Fieldbus Display. When external
switches are connected the front panel push
buttons may be operated in parallel or disabled –
see section 6.3.7
For installation in a hazardous area the switches
and associated wiring must comply with the
requirements for simple apparatus. i.e. the
switch must be mechanically activated and have
IP20 protection, and both the switch and the
wiring must be capable of withstanding a 500V
rms insulation test to earth for one minute. Most
industrial push buttons and wiring satisfy these
requirements.
Although the allowable cable parameters are
large, it is recommended that the cables are less
than 5m long.
If a safe area switch is to be connected to a
Fieldbus Display located in a hazardous area, the
switch contact must be transferred via a certified
intrinsically safe relay or a galvanic isolator having
zero output safety parameters as shown in Fig 3.
Fig 3 External push button switch in safe area
4.4 Alarm outputs
Each alarm output is a galvanically isolated single
pole solid state switch output as shown in Fig 4.
Fig 4 Equivalent circuit of each switch output
The outputs are polarised and current will only
flow in one direction. Odd numbered terminals
should be connected to the positive side of the
supply.
Ron = 5 + 0.7V
Roff = greater than 1M
Note: Because of the series protection diode,
some test meters may not detect a closed alarm
output
WARNING
These Alarm Outputs should not be
used for critical safety applications such
as an emergency shut down system.
When the BA488CF is disconnected from the
fieldbus, or the fieldbus is de-energised all the
alarm outputs will open irrespective of how they
have been configured.

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5. INSTALLATION
5.1 Location
The BA488CF is housed in a robust aluminium
enclosure with a toughened glass window
mounted in a Noryl bezel. The front of the
instrument provides IP66 protection and a gasket
seals the joint between the instrument enclosure
and the panel. The instrument may be installed in
any panel providing the environmental limits
shown in the specification are not exceeded.
Fig 5 shows the overall dimensions of the
BA488CF and the panel cut-out. To achieve an
IP66 seal between the instrument enclosure and
the panel, the smaller cut-out must be used and
the instrument secured with four panel mounting
clips.
The BA488CF liquid crystal display has maximum
contrast when viewed from directly ahead and
slightly below the centre line of the instrument.
Fig 5 BA488CF dimensions
5.2 Installation Procedure
a. Insert the BA488CF into the instrument
panel cut-out from the front of the panel.
b. Fix panel mounting clips to opposite sides
of the instrument and tighten until the
instrument is secure. Four clips are
required to achieve an IP66 seal between
the instrument enclosure and the panel.
c. Connect the panel wiring to the rear
terminal block(s) as shown in Fig 6. To
simplify installation, the terminals are
removable so that panel wiring can be
completed before the instrument is
installed.
Fig 6 Installation and terminal connections

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5.3 EMC
The BA488CF complies with the requirements of
the European EMC Directive 89/336/EEC. For
specified immunity all wiring should be in
screened twisted pairs.
To prevent circulating currents, cable screens
should only be earthed at one point in the safe
area.

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6. DISPLAY & ALARM CONFIGURATION
In addition to loading the BA488CF fieldbus
configuration files onto the system host and
defining up to eight fieldbus variables that are to
be displayed, the instrument display and alarms, if
fitted, have to be configured. How much of this
configuration can be done via the fieldbus
depends upon the instrument version and the
system host. Parameters that can not be
configured via the fielldbus, may be set via the six
front panel push buttons
All the display and alarm configuration functions
are contained in an easy to use menu that is
shown in Fig 7. Where necessary the sub-menus
contain on-screen prompts to guide the user
through each adjustment.
When navigating through the configuration menu,
the push button(s) should be held until the
required screen is displayed.
6.1 Default configuration
Unless otherwise requested at the time of
ordering, BA488CF Fieldbus Displays will be
supplied configured as follows:
Keys Both
Display brightness 100%
Display contrast 50%
Quick access menu On
Quick access menu code 0000
Configuration menu
access code. 0000
Screen Single variable
Number Format Auto
All alarms Disabled
Alarm activation Good data only
Alarm outputs N/C
Bargraph
Low 0
High 100
Input scaling
Zero offset 0
Gain factor 1
Fieldbus Foundation version
Revision Revision 2
(2 x IS function
blocks)
6.2 Accessing the display configuration
menu
Throughout this manual push buttons are shown
in italics e.g. P or Up push button, and legends
displayed by the instrument are shown within
inverted commas e.g. 'Enter Access Code'.
Operating the Pand Epush buttons
simultaneously accesses the display configuration
menu. If the BA488CF is not protected by an
access code the main menu will be displayed. If
an access code other than the default code 0000
has already been entered, the BA488CF will
request that the access code be entered.
Using the Up or Down button set the first digit of
the code which will be flashing. Pressing Pwill
transfer control to the next digit, which should be
adjusted in the same way. When all four digits
have been set, pressing the Ebutton will enter the
access code. If the code is correct the main
menu will be displayed, if the code is incorrect
‘Invalid Code’ will be displayed.
When entering an access code, timeout will occur
and the instrument will automatically return to the
operating mode ten seconds after a push button
was last operated. In all other menus, timeout
occurs after sixty seconds.
The structure of the display configuration menu is
shown in Fig 7. Navigation is achieved by
highlighting the required function using the Up and
Down buttons and then operating the Pbutton to
display the selected function sub-menu, from which
a further selection or adjustment may be made.
Operating the Ebutton moves the display back up
one level.
A flashing highlight indicates that an option or
alphanumeric character may be selected using the
Up and Down buttons and entered using the E
button. If only one entry or adjustment can be
made in a sub-menu, the display will automatically
move up one menu level when the adjustment is
entered. If more than one adjustment can be
made in a sub-menu, the highlight may be moved
to the second variable using the Up or Down
button after the first setting has been entered.
Operating the Pbutton allows the second variable
to be adjusted.
When multiple numeric or alpha characters are
adjusted e.g. an alarm setpoint or a tag legend, the
adjustment is made one digit at a time using the
Up and Down buttons. After the first flashing digit
has been set as required, the flashing highlight can
be moved to the next digit by operating the P
button. When all digits have been set, operating
the Ebutton will enter the setting.
Following completion of the instrument
configuration, the Ebutton should be operated to
step the display back to the main menu. One more
operation of the Ebutton will then return the
BA488CF to the operating mode.

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6.3 Configurable functions
This section provides an explanation of each
configurable function and should be read in
conjunction with Fig 7.
6.3.1 Screens (Display format)
The BA488CF can display up to eight fieldbus
variables. These are identified as IN_1 to IN_8.
The fieldbus variable that each one represents is
determined by the BA488CF configuration at the
fieldbus system host – see the appropriate
Fieldbus Interface Guide.
This sub-menu allows one of nine standard
display formats or a custom format to be selected.
The standard formats contain one, two, three or
four fieldbus variables some with bargraphs as
shown below.
Custom formats, which are identified as ‘Text
Display’ in this menu, require programming which
is explained in the Fieldbus Display Programming
Guide.
One variable
Two variables
Four variables
One variable + horizontal bargraph
Two variables + horizontal bargraphs
One variable + vertical bargraph
Two variables + vertical bargraphs
Three variables + vertical bargraphs
Four variables + vertical bargraphs
6.3.2 Input Settings
Only included in Profibus PA and Fieldbus
Foundation Revision 1 instruments. Omitted from
Fieldbus Foundation Revision 2 instruments
because these parameter can be easily configured
in the Display Transducer Block.
The Input Setting function is divided into two
groups of sub-functions. The first, ‘BarLimits Src’
is included to maintain backwards compatible with
earlier firmware issues in which fieldbus variables
IN_7 and IN_8 were used to define all the
bargraph limits. This reduced the number of
fieldbus variables that could be displayed with
bargraphs from eight to six.
Version 2.0 firmware includes the improved ‘Per
Input’ option that enables the lower and upper
limits of a bargraph for each of the eight fieldbus
variables to be defined via the front panel push
buttons. It is recommended that ‘Per Input’
option be used for new installations.
In addition to defining individual limits for up to
eight bargraphs, the second group of sub-
functions enables the decimal point position for
each display to be defined. Each of the eight
fieldbus inputs may also be offset and scaled
before being displayed which allows variables to

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be displayed in alternative units of measurement.
Display = (Gain x Fieldbus variable) + Offset
The sub-functions for each input are:
‘Offset’ Adds a positive or negative offset to
the fieldbus variable before it is
displayed.
‘Gain’ Multiplies the fieldbus variable by a
factor before it is displayed.
‘Bar Lo’ Defines the bargraph lower limit
*
‘Bar Hi’ Defines the bargraph higher limit *
‘Format’ Defines the position of the displayed
decimal point.
*
Six options are available:
Auto: Max resolution with selected
display format.
4 DP 4 digits on right of decimal point
3 DP 3 digits on right of decimal point
2 DP 2 digits on right of decimal point
1 DP 1 digit on right of decimal point
0 DP No decimal point
* These functions are not included when
‘Text Display’ is selected in the Screens
menu – see 6.3.1.
The total number of display digits available
depends upon the display screen selected – see
6.3.1
Standard
Screen Description Digits
1 1 variable 5, 7, 11 or 17*
22variables 7
34variables 5
4 1 variable + H bar 5, 7, 11 or 17*
5 2 variables + H bars 7
6 1 variable + V bar 6
7 2 variables +V bars 4
8 3 variables + V bars 6
9 4 variables + V bars 4
* Font automatically resizes in auto mode
If a negative number is likely to be displayed, a
digit must be allocated for the negative sign. If the
display overanges all the digits will display ‘?’.
For all options leading zeros are automatically
suppressed.
6.3.3 Tags
Only included in Profibus PA and Fieldbus
Foundation Revision 1 instruments. Omitted from
Fieldbus Foundation Revision 2 instruments
because tags can be easily defined in the Display
Transducer Block.
Each of the eight fieldbus variables may be
displayed with an individual tag that can contain
up to sixteen alphanumeric characters. This menu
allows these tags to be entered. After selecting
the required variable, the tag legend is entered
character by character using the Up and Down
push-buttons. Numbers, upper & lower case
letters and symbols are available.
6.3.4 Units
Only included in Profibus PA and Fieldbus
Foundation Revision 1 instruments. Omitted from
Fieldbus Foundation Revision 2 instruments
because units of measurement can be easily
defined in the Display Transducer Block.
Each of the eight fieldbus variables may be
displayed with units of measurement that can
contain up to eight alphanumeric characters. This
menu allows these units of measurement to be
entered. After selecting the required variable, the
unit of measurement is entered character by
character using the Up and Down push-buttons.
Numbers, upper & lower case letters and symbols
are available.
6.3.5 Alarms
Alarm menus are only included when the BA488CF
is fitted with optional alarm outputs.
Each of the six alarms may be linked to any one
of the eight fieldbus variables displayed by the
BA488CF. Each alarm output can be conditioned
to function as a high or a low alarm, or as a
combined high and low alarm. The output can be
conditioned as normally open ‘N/O’, or normally
closed ‘N/C’ in the non-alarm condition.
Irrespective of settings alarm outputs will be open
when the instrument is not powered from the
fieldbus.
When an alarm is activated, the associated
fieldbus variable display flashes, i.e. alternates
between dark figures on a light background and
light figures on a dark background.
There are eight alarm-conditioning sub-menus.
6.3.5.1 Alarm summary
Shows to which fieldbus variable each alarm is
linked and how each alarm has been conditioned
i.e. high, low, or combined high & low alarm with
normally open or closed output. No adjustments
can be made in this sub-menu.

13
6.3.5.2 Alarm activation
Fieldbus variables that have not been validated
are displayed with dark characters on a light
background, and some screen formats also
contain a status indication. This sub-menu allows
the alarm outputs to be conditioned so that they
only operate with validated fieldbus data, or to
operate irrespective of data validity.
6.3.5.3 Alarm output
There is a separate sub-menu for each of the six
alarm outputs; these link the alarm to one of the
displayed fieldbus variables and define the alarm
function and the setpoints.
To link the alarm to a displayed variable, position
the cursor over the ‘IN_n’ field, press Pand using
the Up or Down button select the required input
source. Enter the selection by pressing the E
button.
Each alarm output can be N/O or N/C in the non-
alarm condition. To change the setting, position
the highlight over the ‘N/O’ or ‘N/C’ field, press P
and use the Up or Down button to toggle the
setting. Enter the selection by pressing the E
button.
Each alarm has three functions that can be
independently enabled to condition the output as
a low or high alarm, or as a combined low and
high alarm, either with or without hysteresis.
The required functions can be individually enabled
by positioning the highlight over the Enb/Dis
(Enabled/Disabled) column, pressing Pand
toggling the function to the required state, then
entering the selection by pressing the Ebutton.
Alarm setpoints are entered digit by digit. Place
the highlight over the setpoint to be adjusted and
press P; the flashing digit to be adjusted may then
be selected by again pressing P. When all the
digits have been adjusted, operating the Ebutton
enters the value and moves the menu up one
level.
The function of all alarms may be reviewed from
the alarm summary menu - see 6.3.5.1.
6.3.6 Display
6.3.6.1 Settings
The backlight brilliance and display contrast are
adjustable from this sub-menu.
6.3.6.2 Quick Access
This sub-menu enables the Quick Access Menu
which is described in sections 2.1 & 6.4 When
enabled, an operator can adjust the display
contrast and backlight brilliance without having
access to any other conditioning menus.
6.3.6.3 Access Code
Defines a four digit alphanumeric code that must
be entered to gain access to the Quick Access
Menu. Alpha characters are case sensitive.
Default code 0000 allows direct access without a
code.
6.3.7 Keys
The function of the front panel push buttons may
be transferred to the six optional external push
buttons, with or without disabling the BA488CF
front panel push buttons. The table below shows
the function of the BA488CF front panel and the
external push buttons for each of the four options
that may be selected in the Keys sub-menu.
* Apart from when ‘Internal+Port’ is selected, the Key_Status
does not function when the instrument is in the configuration
menu.
The fourth option, ‘Internal + Port’ allows the front
panel push buttons to be used for controlling the
BA488CF Fieldbus Display and the optional
external push buttons to independently enter
operator acknowledgements or controls. This
option also allows the status of plant mechanical
switches to be returned to the host.
For applications where the instrument is only
displaying 1, 2, 3 or 4 variables on a single
screen, it is recommended that external buttons
are selected but not fitted. This will disable the
instrument front panel buttons, but still provide
access to the configuration menu, which may be
protected by a security code.
6.3.8 Code
Defines the four digit alphanumeric code that must
be entered to gain access to the instrument
configuration menus. Alpha characters are case
sensitive. Default code 0000 allows direct access
without a code.
6.3.9 Unit Info
Displays the instrument model number and the
firmware version.

14
6.3.10 Defaults
This function enables the display and interface
board factory defaults to be restored. For the
Fieldbus Foundation version, the function blocks
(Revision 1 or 2) should be selected to suit the
system host.
6.3.10.1 Display Defaults
This function restores the display defaults defined
in section 6.1.
CAUTION
Existing settings can not be recovered
after this function has been used.
6.3.10.2 Interface Board Defaults
This function restores the Fieldbus Interface
Board factory defaults.
CAUTION
Do not use this function when the
BA488CF is connected to an operational
fieldbus, as communication may be
terminated.
6.3.10.3 FF Revisions 1 and 2
Not included in the Profibus version
Unless specified at the time of ordering,
BA488CF-F Fieldbus Foundation Displays will be
supplied as Revision 2 instruments. i.e. two input
selector function blocks (2 x IS).
The BA488CF-F can be converted to a Revision 1
instrument using the Default menu. i.e one
multiple analogue output function block
(1 x MAO).
The BA488CF-F revision should be chosen so
that the fieldbus function blocks selected are
supported by the system host.
To change the BA488CF-F revision, highlight the
required revision in the ‘Restore Defaults’ menu
and follow the screen prompts until ‘Defaults
Loaded Now power cycle the unit’ is displayed.
To complete the installation remove the
BA488CF-F power supply for a few seconds,
when power is restored the instrument will have
been converted to the new revision.
6.4 Quick Access Menu
The Quick Access Menu allows an operator to
adjust the backlight brilliance and the display
contrast without having access to the other
configuration parameters.
The quick access menu is accessed by operating
the Pand Up push buttons simultaneously. If the
Quick Access Menu is not protected by an access
code the contrast and brilliance controls will be
displayed immediately. If an access code other
than the default code 0000 has already been
entered, the BA488CF will request that the access
code be entered.
The backlight brilliance is adjusted using the Up
and Down push buttons. Operating the Ppush
button will transfer control to the display contrast
adjustment. When both are set as required,
operating the Ebutton will store both settings and
return the instrument to the operating mode.

15

16
7. PROGRAMMING
The BA488CF only requires programming if the
standard display formats are not suitable and a
custom display format has to be designed. The
Fieldbus Display Programming Guide, which may
be downloaded from the BEKA web site at
www.beka.co.uk, explains how to construct
custom screens and contains examples.
8. MAINTENANCE
8.1 Fault finding during commissioning
If a BA488CF fails to function during
commissioning the following procedure should be
followed:
Symptom Cause Check:
No Display Fieldbus not
powered 9 to 17.5V between
terminals 1 & 2.
No variables Fieldbus not
configured
BA488CF does
not have correct
protocol
Instrument
configuration at
host
That the
BA488CF
protocol is the
same as the
fieldbus.
i.e. Fieldbus
Foundation or
Profibus PA.
Wrong variable
displayed Wrong screen selected Other screens by operating Up or
Down button
Display shows
‘?????’ Display Overange Number Format see section 6.3.2
No backlight Brilliance turned
down Setting in display menu
Low or excessive
contrast Incorrect contrast setting Setting in display menu
Displayed
variable is
inverted
i.e. light digits on
dark background
Variable has
‘bad’ status Configuration and instrument
supplying
variable
Displayed
variable is
flashing
Associated alarm
has been
activated
Setpoints
Bargraph on
standard display
format is shown
dotted
Displayed
fieldbus variable
is outside
bargraph limits or
data is ‘bad’
Bargraph limits
see section 6.3.2
8.2 Fault finding after commissioning
ENSURE PLANT SAFETY BEFORE
STARTING MAINTENANCE
Live maintenance is permitted on
intrinsically safe equipment installed in a
hazardous area, but only certified test
equipment should be used unless a gas
clearance certificate is available.
If a BA488CF fails after it has been functioning
correctly, the table shown in section 8.1 may help
to identify the cause of the failure.
If this procedure does not reveal the cause of the
fault, it is recommended that the instrument is
replaced.
8.3 Servicing
We recommend that faulty BA488CF Fieldbus
Displays are returned to BEKA associates or to
our local agent for repair.
8.4 Routine maintenance
The mechanical and electrical condition of the
instrument should be regularly checked. Initially
annual inspections are recommended, although
the inspection frequency should be adjusted to
suit the environmental conditions.
8.5 Guarantee
Instruments which fail within the guarantee period
should be returned to BEKA associates or our
local agent. It is helpful if a brief description of the
fault symptoms is provided.
8.6 Customer comments
BEKA associates is always pleased to receive
comments from customers about our products
and services. All communications are
acknowledged and whenever possible,
suggestions are implemented.

17
9. ACCESSORIES
9.1 Tag number
The BA488CF can be supplied with a thermally
printed tag number on the rear panel. This tag
number is not visible from the front of the
instrument after installation.
9.2 Fieldbus Display - Programming Guide
Explains how to create custom screens for all
BEKA fieldbus displays. It is not necessary to
consult this guide if one of the nine standard
display screens is being used.
The guide may be requested from the BEKA sales
office or downloaded from the BEKA web site at
www.beka.co.uk
9.3 Fieldbus Interface Guides
There are two Fieldbus Interface Guides, one for
BEKA Profibus products and one for BEKA
Fieldbus Foundation products. The appropriate
guide should be consulted prior to commissioning
all BEKA fieldbus products.
Both guides may be requested from the BEKA
sales office or downloaded from the BEKA web
site at www.beka.co.uk

18
10. INDEX
Subject Section
Alarms 6.3.5
Activation 6.3.5.2
Output 3.5; 6.3.5.3; 4.4
Summary 6.3.5.1
ATEX Directive 3.1
Backlight 6.3.6.1
Bargraph Limits 6.3.2
Certificates
EC-Type Examination 3.1
Label 3.6
Configuration menu Fig 7
Controls 2.1
Code 6.3.8
Decimal points 6.3.2
Default settings 6.1; 6.3.10
Display 6.3.6
Access code 6.3.6.3
Settings 6.3.6.1
Quick access 6.3.6.2; 6.4
EMC 5.3
External switches 3.4; 4.3; 6.3.7
Fault finding
During commissioning 8.1
After commissioning 8.2
Fieldbus
Connection 3.3
Foundation 1; 2
Interface Guide 9.3
Revisions 1 & 2 6.3.10.3
FISCO 3.3; 4.1
FM Approval Appendix 1
Gas groups 3.2; Appendix 1; 2
Guarantee 8.5
IECEx Certification Appendix 2
Input Scaling 6.3.2
Installation 5.
Intrinsic safety 3; Appendix 1; 2
Keys 6.3.7
Location 5.1
Appendix 1; 2
Maintenance 8.
Routine 8.4
Subject Section
Notified Body 1; 3.1
Number Format 6.3.2
Programming 7.
Guide 7; 9.2
Profibus PA 1; 2
Quick access menu 6.3.6.2; 6.4
Revisions 1 & 2 1; 6.3.10.3
Servicing 8.3
Screens (display format) 6.3.1
Tags 6.3.3
Tag number 9.1
T rating 3.2; Appendix 1; 2
Terminal numbers Fig 6
Units (of measurement) 6.3.4
Unit Info (firmware version)6.3.9
Zones 3.2; Appendix 1; 2

19
APPENDIX 1
FM approval for use in USA
A1.0 Factory Mutual Approval
For installations in the USA, the BA488CF and
optional alarms have been approved intrinsically
safe and nonincendive by FM Approvals, project
identification 3022546. Copies of the Certificate of
Compliance are available from BEKA associates.
A1.1 Intrinsic safety approval
The BA488CF is approved to the FM Class 3610
intrinsic safety standard for use in indoor
hazardous (classified) locations. Installations
must comply with BEKA associates Control
Drawing CI480-17, which is attached to this
Appendix, ANSI/ISA RP12.06.01 ‘Installation of
Intrinsically Safe Systems for Hazardous
(Classified) Locations’ and with the National
Electrical Code ANSI/NFPA70.
The BA488CF has a T4 rating at ambient
temperatures up to +60oC and may be used with
the following gases and dusts:
Intrinsic Safety
Division 1 or 2
Class I Group A & B
Group C
Group D
Zone 0, 1 or 2
Class 1 Group IIC
Group IIB
Group IIA
The FM entity parameters are identical to the
ATEX parameters and, like the ATEX certification,
confirm that terminals 1 & 2 of the BA488CF
comply with the requirements for a FISCO Field
Device specified in IEC60079-27. The intrinsically
safe circuits shown in Figs 2 and 3 of this manual
may therefore be used for installations in the USA,
providing the fieldbus power supply, terminators,
Zener barriers and galvanic isolators are FM
Approved and comply with BEKA associates
Control Drawing CI480-17. The FM Approval also
allows the BA488CF to be connected to non-
FISCO systems using the entity concept – see
section 4.2 of this manual.
A1.2 Nonincendive approval
The BA488CF is Class 3611 nonincendive
approved by Factory Mutual allowing it to be
installed in Division 2 indoor hazardous
(classified) locations without the need for Zener
barriers or galvanic isolators. Installations must
comply with the BEKA associates Control Drawing
CI480-18, which is attached to this Appendix, and
with the National Electrical Code ANSI/NFPA70.
The FM Nonincendive Approval also allows the
instrument to be connected to any FNICO
compliant fieldbus segment powered by FM
Approved Associated Nonincendive Field Wiring
Apparatus.
The BA488CF has a T4 rating at ambient
temperatures up to +60oC and may be used with
the following gases and dusts:
Nonincendive
Division 2
Class I Group A & B
Group C
Group D
Zone 2
Class I Group IIC
Group IIB
Group IIA

20
HAZARDOUS (CLASSIFIED) LOCATION UNCLASSIFIED LOCATION
EQUIPMENT
LOCATION
HAZARDOUS
NON
SEE NOTE 2
SEE NOTE 5
SEE NOTE 5
SEE NOTE 5
SEE NOTE 5
SEE NOTE 5
SEE NOTE 5
A9
ALARM
ALARM
OPTIONAL
OPTIONAL A12
A11
A10
BA484DF or
BA488CF
SEE NOTE 7 & 8
S7
BA484DF LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class II, Division 1, Groups E, F & G
Class III
Class I, Zone 0, Group IIC
BA488CF LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class I, Zone 0, Group IIC
SEE
NOTE 1
BA484DF and BA488CF
Entity Parameters
Terminals 1 & 2
Ui = 17.5V Uo = 0
Ii = 380mA dc Io = 0
Pi = 5.32W Po = 0
Ci = 1nF
Li = 8µH
These terminals comply
with The Intrinsically Safe
Concept (FISCO) defined by
IEC 60079-27
Terminals S1 to S7
(combined parameters)
Ui = 0V Uo = 14.7V dc
Ii = 0mA Io = 146.7mA dc
Pi = 0W Po = 0.58W
Ci = 0.54µF Co = 0.08µF
Li = 0.3mH Lo = 1.1mH
Terminals A1 & A2; A3 & A4;
A5 & A6; A7 & A8; A9 & A10
and A11 & A12
Ui = 28V dc Uo = 1.49V dc
Ii = 200mA dc Io = 1µA dc
Pi = 0.84W Po = 3µW
Ci = 0.04µF
Li = 0.02mH
A7
OPTIONAL
ALARM A8
A5
OPTIONAL
ALARM A6
A3
OPTIONAL
ALARM A4
A1
OPTIONAL
ALARM A2
S6
S5
S4
S3
S2
S1
SEE NOTE 6
OPTIONAL
EXTERNAL
SWITCHES
2
1
SEE NOTE 4
FIELDBUS
SEE NOTE 10
SEE
NOTE 11