BEKA BA418CF-F Installation and operating instructions

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Installation & Maintenance Instructions
BA418CF-F

Installation & Maintenance Instructions
BA418CF-F
FOUNDATION™ fieldbus intrinsically safe
panel mounting fieldbus indicator
Reading Office
Cutbush Park, Danehill, Lower Earley,
Reading, Berkshire. RG6 4UT. UK.
Tel: [phone]
Email: [email protected]
Aberdeen Office
Unit 6 Airside Business Park, Kirkhill Industrial Estate,
Dyce, Aberdeen. AB21 0GT. UK.
Tel: [phone]
Email: [email protected]
Internet: www.able.co.uk
e-procurement: www.247able.com
Registered in England No: 01851002
VAT No: GB 417 2481 61

Issue: 5
9th December 2011
BA418CF-F
FOUNDATION™ fieldbus
Intrinsically safe
Panel mounting
Fieldbus Indicator
Issue: 5

2
1. Description
1.1 Documentation
2. Intrinsic Safety Certification
2.1 ATEX certificate
2.2 Zones, gas groups and T rating
2.3 Fieldbus connection
2.4 Certification Iabel Information
3. System Design for Hazardous Area
3.1 FISCO Systems
3.2 Non-FISCO Sysems
4. Installation
4.1 Location
4.2 Installation procedure
4.3 EMC
5. Maintenance
5.1 Fault finding during commissioning
5.2 Fault finding after commissioning
5.3 Servicing
5.4 Routine maintenance
5.5 Guarantee
5.6 Customer comments
6. Accessories
6.1 Scale marking
6.2 Tag number
6.3 Fieldbus Interface Guide
7. Index
Appendix 1
FM Approval for use in the USA and
cFM Approval for use in Canada.
Appendix 2
IECEx certification
CONTENTS
The BA418CF-F is CE marked to show compliance with the European Explosive Atmospheres
Directive 94/9/EC and the European EMC Directive 2004/108/EC

3
1. DESCRIPTION
The BA418CF-F Fieldbus Indicator is an
intrinsically safe, FOUNDATION™ fieldbus ins-
trument that can display one fieldbus process
variable on a five digit LCD and 31 segment
analogue bargraph. The instrument is bus
powered so no additional power supply is required.
Communication Fieldbus Function
Protocol Block
FOUNDATION™ fieldbus Input Selector (1 x IS)
The Device Description files may be downloaded
from The Fieldbus Foundation or the BEKA
associates web site.
Housed in a robust 72 x 144 panel mounting DIN
enclosure, the BA418CF-F fieldbus indicator has
an IP66 front panel and is supplied with a gasket to
seal the joint between the instrument and the
panel.
The instrument is intrinsically safe and has been
certified by European Notified Body Intertek
Testing and Certification Ltd (ITS) to the ATEX
Directive 94/9/EC for use in explosive gas
atmospheres.
The BA418CF-F also has intrinsic safety and
nonincendive FM and cFM Approval allowing
installation in the USA and Canada – see
Appendix 1.
For international applications the BA418CF-F
fieldbus indicator has IECEx intrinsic safety
approval – see Appendix 2.
The instrument’s communication protocol is shown
on the rear of the instrument. The ‘-F’ order code
suffix also indicates the protocol but is not shown
on the instrument certification label.
1.1 Documentation
This instruction manual describes ATEX system
design and installation of the BA418CF-F Fieldbus
Indicator. For commissioning information please
refer to:
FOUNDATION™ fieldbus
Fieldbus Interface Guide
for
Fieldbus Displays and
Fieldbus Indicators
which can be requested via the BEKA web site
www.beka.co.uk
System design information for FM, cFM and IECEx
is shown in separate appendices to this manual.
2. INTRINSIC SAFETY CERTIFICATION
2.1 ATEX certificate
The BA418CF-F has been issued with an EC-Type
Examination Certificate by Notified Body Intertek
Testing and Certification Ltd (ITS) confirming
compliance with the European ATEX Directive
94/9/EC for Group II, Category 1G, gas
atmospheres, Ga Ex 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 ATEX installations in
explosive gas atmospheres that conform with
EN 60079:Part14 Electrical Installation in
Hazardous Areas. When designing systems for
installation outside the UK, the local Code of
Practice should be consulted.
2.2 Zones, gas groups and T rating
The BA418CF-F has been issued with EC Type
Examination certificate ITS06ATEX25314/2X
confirming that it complies with the requirements
for Group II Category 1G Ga Ex ia IIC T4 (Tamb
–40 to 70oC) specified in the ATEX Directive.
When connected to a suitable certified system the
BA418CF-F may be installed in:
Zone 0 explosive gas air mixture
continuously present. Note:
Special conditions for safe use
apply see section 4.1
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
+70oC.
Note: the guaranteed operating temperature range
of the Fieldbus Indicator is –20 to +70oC.

4
2.3 Fieldbus connection
The BA418CF-F Indicator is powered and
communicates via the fieldbus, which is connected
to terminals 1 and 2. These are non-polarised,
comply with the Fieldbus Intrinsically Safe Concept
(FISCO) defined in EN 60079 Part 27 and have
separate entity parameters shown below:
FISCO Entity
Ui = 17.5V dc 22.0V dc
Ii = 380mA dc 250mA dc
Pi = 5.32W 1.2W
The maximum equivalent capacitance and
inductance at terminals 1 & 2 is:
Ci = 0
Li = 8µH
2.4 Certification Label Information
The certification information label is fitted to the top
outer surface of the enclosure. It shows details of
the ATEX certification and a statement that the
instrument is a FISCO Field Device, plus BEKA
associates name and location. IECEx approval
information is also included. The label may also
contain non-European certification information.
The instrument serial number and year of
manufacture are shown on the rear panel.
The instrument serial number is shown on the rear
of the instrument adjacent to the terminals.
3. SYSTEM DESIGN FOR HAZARDOUS
AREAS
3.1 FISCO Systems
The BA418CF-F may be connected to any ATEX
certified FISCO compliant fieldbus segment,
providing the segment can supply the additional
13mA required to power the instrument.
Fig 1 shows a typical fieldbus segment. To comply
with FISCO requirements, the power supply,
terminators, field devices and the interconnecting
cables must conform with EN 60079 part 27.
Fig 1 FISCO fieldbus system
3.2 Non-FISCO Systems
For non-FISCO applications the BA418CF-F
Fieldbus Indicator has a higher voltage entity
intrinsic safety input parameter allowing connection
to a wide range of fieldbus segments.
The BA418CF-F Fieldbus Indicator may be
connected to any intrinsically safe segment
providing:
The device powering the fieldbus segment is
ATEX certified and has output parameters
equal to or less than:
Uo = 22V dc
Io = 250mA dc
Po = 1.2W
The segment can provide an additional
13mA to power the Fieldbus Indicator.
Note: The equivalent capacitance Ci of the
BA418CF-F Fieldbus Indicator is zero and
the equivalent inductance is insignificant.
Therefore these BA414DF parameters do
not need to be considered.

5
4. INSTALLATION
4.1 Location
The BA418CF-F 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 2 shows the overall dimensions of the
BA418CF-F 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.
CAUTION
Installation in Zone 0
When installed in a Zone 0 potentially
explosive atmosphere requiring apparatus
of Category 1G, the indicator shall be
installed such that even in the event of rare
incidents, an ignition source due to impact
or friction between the aluminium enclosure
at the rear of the instrument mounting panel
and iron/steel is excluded.
The BA418CF-F liquid crystal display has
maximum contrast when viewed from directly
ahead and slightly below the centre line of the
instrument.
Fig 2 BA418CF-F dimensions

6
4.2 Installation Procedure
a. Insert the BA418CF-F 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 as shown in Fig 3. To simplify
installation, the terminals are removable so
that panel wiring can be completed before
the instrument is installed.
Fig 3 Installation and terminal connections
4.3 EMC
The BA418CF-F complies with the requirements of
the European EMC Directive 89/336/EEC. For
specified immunity, all wiring should be in
screened twisted pairs with the screens earthed at
one point in the safe area.

7
5. MAINTENANCE
5.1 Fault finding during commissioning
If a BA418CF-F fails to function during
commissioning the following procedure should be
followed:
Symptom Cause Check:
No Display Instrument not
correctly
connected or
powered.
9 to 22V between
terminals 1 & 2.
Display shows
‘9.9.9.9.9’ with all
decimal points
flashing; all
bargraph
segments
activated and
bargraph scale
flashing.
Value
over-range Variable source
Decimal point
configuration.
Display shows
‘-9.9.9.9.9’ with
all decimal points
flashing; no
bargraph
segments
activated and
bargraph scale
flashing.
Value
under-range Variable source
Decimal point
configuration
Display
alternates
between value
and the word
‘bAd’. Bargraph
flashes.
Status of fieldbus
variable has a
quality of ‘BAD’
or a fault state is
active.
Display has not
yet received
data.
Variable source
Fieldbus
configuration.
Bargraph scale
flashes. Variable is outside the limits
defined for the
bargraph.
Bargraph
configuration.
All display
segments
activated.
Display is
initialising. This is normal operation, after a
few seconds the
firmware version
will be displayed
prior to entering
the operational
mode.
5.2 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 BA418CF-F fails after it has been functioning
correctly, the table shown in section 5.1 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.
5.3 Servicing
We recommend that faulty BA418CF-F Fieldbus
Indicators be returned to BEKA associates or to
our local agent for repair.
5.4 Routine maintenance
The mechanical and electrical condition of the
instrument should be regularly checked. Initially
annual inspections are recommended, but the
inspection frequency should be adjusted to suit the
environmental conditions.
5.5 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.
5.6 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.

8
6. ACCESSORIES
6.1 Scale marking
BA418CF-F indicators are fitted with a blank
escutcheon around the liquid crystal display. If
specified when the instrument is ordered, this can
be supplied printed with units of measurement and
a scale for the horizontal bargraph.
6.2 Tag number
The BA418CF-F can be supplied with a thermally
printed tag number on the rear panel adjacent to
the terminals.
6.3 Fieldbus Interface Guide
The FOUNDATION™ fieldbus Interface Guide for
Fieldbus Displays & Fieldbus Indicators contains
commissioning information for the BA418CF-F. A
copy may be requested from the BEKA sales office
or from the BEKA web site at www.beka.co.uk

9
7. INDEX
Subject Section
ATEX Directive 2.1
Codes 2.2
Certification
ATEX 2.1
CFM Canada 1.0; Appendix 1
EC-Type Examination 2.1
FM USA Appendix 1
IECEx Appendix 2
Label ATEX 2.4
Divisions Appendix 1
Documentation 1.1
EMC 4.3
Fault finding
During commissioning 5.1
After commissioning 5.2
Fieldbus
Connection 2.3; Fig 3
Foundation 1; 3
Guide 1.1; 6.3
Firmware version number5.1
FISCO 2.3; 2.4; 3.1
FM Approval Appendix 1
Function Blocks 1.
Gas groups 2.2
Guarantee 5.5
IECEx Certification Appendix 2
Installation 4.
Intrinsic safety 2.0;
Appendices 1 & 2.
Location 4.1
Appendices 1 & 2.
Maintenance 5.
Routine 5.4
Subject Section
Notified Body 1; 2.1
Servicing 5.3
Scale marking 6.1
Tag number 6.2
T rating 2.2
Appendices 1 & 2.
Terminal numbers Fig 3
Units of measurement 6.1
Zones 2.2
Appendices 1 & 2.

10
APPENDIX 1
FM approval for use in the USA and
cFM Approval for use in Canada
A1.0 Factory Mutual Approval
For installations in the USA and Canada the
BA418CF-F has FM and CFM intrinsic safety and
nonincendive approvals, project identification
3027031 and 3027031C. Copies of the
Certificates of Compliance are available from
BEKA associates sales office and
www.beka.co.uk.
A1.1 Intrinsic safey approval
The BA418CF-F is approved to FM Class 3610
intrinsic safety standard for use in hazardous
(classified) locations. Installations must comply
with BEKA associates Control Drawing CI410-12,
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.
Canadian installations must comply with the
Canadian Electrical Code C22.2 and with BEKA
associates Control Drawing CI410-12 which is
attached to this Appendix.
The BA418CF-F has a T4 rating at ambient
temperatures up to +70oC and may be used with
the following gases:
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 and CFM entity parameters are identical to
the ATEX parameters and, like the ATEX
certification, confirm that the BA418CF-F complies
with the FISCO Field Device requirements
specified in IEC60079-27. The intrinsically safe
system shown in Fig 1 of this manual may
therefore be used for installations in the USA and
Canada, providing the fieldbus power supply,
terminators, Zener barriers and galvanic isolators
are FM Approved for US installations and CFM or
CSA Approved for Canadian installations. All
installations must comply with BEKA associates
Control Drawing CI410-12.
FM and CFM Approval also allows the BA418CF-F
to be connected to non-FISCO systems using the
entity concept – see section 3.2 of this manual.
A1.2 Nonincendive approval
The BA418CF-F is also Class 3611 nonincendive
approved by Factory Mutual allowing it to be
installed in Division 2 hazardous (classified)
locations without the need for Zener barriers or
galvanic isolators. US installations must comply
with the BEKA associates Control Drawing CI410-
13, which is attached to this Appendix, and with
the National Electrical Code ANSI/NFPA70.
Canadian nonincendive installations must comply
with the Canadian Electrical Code C22.2 and with
BEKA associates Control Drawing CI410-13 which
is attached to this Appendix.
The FM and CFM Nonincendive Approvals also
allow the BA418CF-F fieldbus indicator to be
connected to any appropriately certified FNICO
compliant fieldbus segment.
The BA418CF-F has a T4 rating at ambient
temperatures up to +70oC and may be used with
the following gases:
Nonincendive
Division 2
Class I Group A & B
Group C
Group D
Zone 2
Class I Group IIC
Group IIB
Group IIA

11
HAZARDOUS (CLASSIFIED) LOCATION UNCLASSIFIED LOCATION
EQUIPMENT
LOCATION
HAZARDOUS
NON
SEE NOTE 2
BA414DF or
BA418CF
SEE NOTE 5 & 6
BA414DF 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
BA418CF LOCATIONS:
Class I, Division 1, Groups A, B,C, D
Class I, Zone 0, Group IIC
SEE
NOTE 1
BA414DF and BA418CF
Terminals 1 & 2
These terminals comply
with the Intrinsically Safe
Concept (FISCO) defined by
IEC 60079-27
Ui = 17.5V Uo = 0
Ii = 380mA dc Io = 0
Pi = 5.32W Po = 0
Ci = 0
Li = 8µH
and have the following
Entity Parameters
Ui = 22Vdc Uo = 0
Ii = 250mA Io = 0
Pi = 1.2W Po = 0
2
1
SEE NOTE 4
FIELDBUS
SEE NOTE 8
SEE
NOTE 9
equal to or less than
equal to or less than
equal to or greater than
equal to or greater than
equal to or less than
The associated intrinsically safe barriers and fieldbus power supply must be FM
approved and the manufacturers’ installation drawings shall be followed when
The unclassified location equipment connected to the associated intrinsically safe
barriers and fieldbus power supply shall not use or generate more than 250V rms
Installation shall be in accordance with ANSI/ISA RP 12.06.01 “Installation of
Intrinsically Safe Systems for Hazardous (Classified) Locations” and the National
Fieldbus power supply with FISCO compliant output (IEC6009-27) or galvanic
isolator with entity parameters complying with the following requirements:
Electrical Code ANSI/NFPA 70.
Ca
4.
3.
Io or It
Uo or Vt
Po
La
installing this equipment.
or 250V dc.
2.
Notes:
1.
Ccable + Ci
Lcable + Li
Ii
Pi
Ui
cont:
supply must be CFM or CSA approved and the manufacturers’ installation drawings shall
For installations in Canada the associated intrinsically safe barriers and fieldbus power
be followed when installing the equipment.
Installations in Canada shall be in accordance with the Canadian Electrical Code C22.2

12
Four panel mounting clips should be used
Minimum panel thickness should be
Edges of panel cut-out should be deburred and clean
Each panel mounting clip should be
To maintain IP66 protection between the BA418CF and the mounting panel:
Outside panel finish should be smooth, free from particle inclusions, runs or
tightened to between:
build-up around cut-out.
Panel cut-out should be
5.
cont:
3mm (0.12inches) Aluminium
(2.60 x 5.35 inches –0.00 +0.02)
20 and 22cNm (1.77 to 1.95 inL
2mm (0.08inches) Steel
66.2 x 136.0mm -0.0 +0.5
b)
The BA414DF and BA418CF should be mounted where they are shielded from
The terminator on the Fieldbus must be FM or for Canadian installations CFM or
REMKE hub
O-Z / Gedrey Hubs
the required environmental protection.
Crouse – Hinds Myler hubs
CHMG-50DT
Metallic glands and hubs must be grounded – see note 7.
CMCXAA050 MCR050 MCX050
all metalic glands or conduit hubs must be connected together and grounded.
Killark Glands
SSTG-1 STG-1 STAG-1
Any metallic or plastic cable gland or conduit hub that provides
When installed in a hazardous (classified) location the BA414DF Fieldbus
Indicators shall be fitted with cable glands / conduit hubs selected from the following table
In addition to the supplied bonding plate, when 3 metallic glands or conduit
hubs are fitted to a BA414DF Fieldbus Indictors,
The BA414DF and BA418CF Fieldbus Indicator enclosures are
manufactured from conductive plastic per Article 250 of the National Electrical
Code the enclosures shall be grounded using the ‘E’ terminal on the terminal
block.
10.
9.
Class II and III
Class I
CAUTION:
7.
8.
WH-1-G
MHUB-1
Class
6.
Permitted gland or conduit hub
CSA Approved.
direct sunlight.

13
FISCO Rules
The FISCO Concept allows the interconnection of intrinsically safe apparatus to associated
apparatus not specifically examined in such combination. The criterion for such interconnection is
that the voltage (Vmax), the current (Imax) and the power (Pmax) which intrinsically safe
apparatus can receive and remain intrinsically safe, considering faults, must be equal or greater
than the voltage (Uo, Voc or Vt), the current (Io, Isc or It) and the power (Po) which can be
provided by the associated apparatus (supply unit). In addition the maximum unprotected residual
capacitance (Ci) and inductance (Li) of each apparatus (other than terminators) connected to the
Fieldbus must be less than or equal to 5nF and 10uH respectively.
In each I.S. Fieldbus segment only one active source, normally the associated apparatus, is
allowed to provide the necessary power for the Fieldbus system. The allowed voltage (Uo, Voc or
Vt) of the associated apparatus used to supply the bus cable must be limited to the range 14Vdc
to 24Vdc. All other equipment connected to the bus cable has to be passive, meaning that the
apparatus is not allowed to provide energy to the system, except a leakage current of 50µA for
each connected device. Separately powered equipment needs galvanic isolation to ensure the
intrinsically safety Fieldbus circuit remains passive.
The cable used to interconnect the devices needs to comply with the following parameters:
Loop resistance R': 15....150/km
Inductance per unit length L':0.4....1mH/km
Capacitance per unit length C': 80....200nF/km
C' = C' line/line+0.5 C' line/screen, if both lines are floating
or
C' = C' line/line + C'line/screen, if the screen is connected to one line.
Length of spur cable: max. 30m
Length of trunk cable: max. 1km
Length of splice: max = 1m
Terminators
At the end of each trunk cable an FM Approved line terminator with the following parameters is
suitable:
R= 90....100
C = 0 ....2.2µF
System evaluation
The number of passive devices like transmitters, actuators, connected to a single bus segment is
not limited due to I.S. reasons. Furthermore, if the above rules are respected, the inductance and
the capacitance of the cable need not be considered and will not impair the intrinsic safety of the
installation.
Notes.
1. The intrinsic safety FISCO concept allows the interconnection of FM Approved Intrinsically
Safe devices with FISCO parameters not specifically examined in combination as a system when:
Uo or Voc or Vt Vmax, Io, Isc or It Imax, Po Pi.
For Canadian installations the intrinsic safety FISCO concept allows the interconnection of
CFM or CSA Approved Intrinsically Safe devices with FISCO parameters not specifically examined
in combination as a system when:
Uo or Voc or Vt Vmax, Io, Isc or It Imax, Po Pi.

14
HAZARDOUS (CLASSIFIED) LOCATION UNCLASSIFIED LOCATION
EQUIPMENT
LOCATION
HAZARDOUS
NON
SEE NOTE 1
2
1
BA414DF or
BA418CF
SEE NOTE 4 & 5
BA414DF LOCATIONS:
Class I, Division 2, Groups A, B,C, D
Class II, Division 2, Groups E, F & G
Class III
Class I, Zone 2, Groups IIC
BA418CF LOCATIONS:
Class I, Division 2, Groups A, B,C, D
Class I, Zone 2, Groups IIC
BA414DF and BA418CF
Maximum input and
output parameters
Terminals 1 & 2
These terminals comply with
The Fieldbus Nonincendive
Cincept (FNICO) defined by
IEC60079-27
(Typical current consumption
13mA)
Vmax = 32V dc
NIFW Vmax = 17.5V (FNICO)
Ci = 0
Li = 8µH
FIELDBUS
SEE NOTE 7
SEE NOTES
3A and 3B
SEE
NOTE 8
The unclassified location equipment connected to the associated nonincendive
field wiring apparatus must not use or generate more than 250V rms or 250V dc.
Nonincendive field wiring installations shall be in accordance with the National
Electrical Code ANSI/NFPA 70. The Nonincendive Field Wiring concept allows
interconnection of Nonincendive Field Wiring Apparatus with Associated
Nonincendive Field Wiring Apparatus using any of the wiring methods permitted for
FM Approved Nonincendive Field Wiring Apparatus installed in the classified
location with parameters complying with the following requirements:
FM Approved Associated Nonincendive Field Wiring Apparatus installed in the
A linear fieldbus power supply shall be:
unclassified location with parameters complying with the following requirements:
equal to or greater than
equal to or greater than
equal to or less than
La
Ca
Voc
unclassified locations.
Linear power supply
3A.
Notes:
2.
1.
OR
Ccable
Lcable + Li
Vmax
Cont.
Canadian installations shall be in accordance with the Canadian Electrical Code C22.2
For Canadian Installations apparatus shall be CFM or CSA approved.
For Canadian Installations apparatus shall be CFM or CSA approved.

15
for Groups AB [IIC]
Maximum current
154
199
274
mA
121
location complying with the following table:
FM Approved Nonincendive Field Wiring Apparatus installed in the classified
unclassified location complying with the following table:
FM Approved Associated Nonincendive Field Wiring Apparatus installed in the
A FNICO non-linear fieldbus power supply shall be:
FNICO non-linear power supply
Each panel mounting clip should be
Edges of panel cut-out should be deburred and clean
Outside panel finish should be smooth, free from particle inclusions, runs or
Minimum panel thickness should be
Four panel mounting clips should be used
To maintain IP66 protection between the BA418CF and the mounting panel:
15
tightened to between:
17.5
16
el cut-out should be
build-up around cut-out.
4.
Pan
14
Voc
V
OR
3B.
531
Cont.
20 and 22cNm (1.77 to 1.95 inLb)
(2.60 x 5.35 inches –0.00 +0.02)
3mm (0.12inches) Aluminium
66.2 x 136.0mm -0.0 +0.5
2mm (0.08inches) Steel
360
432
for Groups CD [IIB, IIA]
Maximum current
mA
570
For Canadian Installations apparatus shall be CFM or CSA approved.
For Canadian Installations apparatus shall be CFM or CSA approved.

16
Cont.
The BA414DF and the BA418CF should be mounted where they are shielded from
The terminator on the Fieldbus must be FM Approved or for Canadian Installations
Indicator shall be fitted with cable glands / conduit hubs selected from the following table.
When installed in a hazardous (classified) location the BA414DF Fieldbus
Metallic glands and hubs must be grounded – see note 6.
O-Z / Gedrey hub
Killark Glands
CMCXAA050 MCR050 MCX050
Crouse – Hinds Myler hubs
SSTG-1 STG-1 STAG-1
the required environmental protection.
Any metallic or plastic cable gland or conduit hub that provides
The BA414DF and BA418CF Fieldbus Indicator enclosures
In addition to the supplied bonding plate, when 3 metallic glands or conduit
hubs are fitted to BA414DF Fieldbus Indicators,
are manufactured from conductive plastic per Article 250 of the National Electrical
Code the enclosures shall be grounded using the ‘E’ terminal on the terminal
all metallic glands or conduit hubs must be connected together and grounded.
CAUTION:
block.
9.
8.
7.
Class I
Class II and III
6.
Class
WH-1-G
REMKE hub
CHMG-50DT
MHUB-1
5.
Permitted gland or conduit hub
CFM or CSA Approved
direct sunlight.

17
FNICO Rules
The FNICO Concept allows the interconnection of intrinsically safe apparatus to associated
apparatus not specifically examined in such combination. The criterion for such interconnection is
that the voltage (Vmax), the current (Imax) and the power (Pmax) which intrinsically safe
apparatus can receive and remain intrinsically safe, considering faults, must be equal or greater
than the voltage (Uo, Voc or Vt), the current (Io, Isc or It) and the power (Po) which can be
provided by the associated apparatus (supply unit). In addition the maximum unprotected residual
capacitance (Ci) and inductance (Li) of each apparatus (other than terminators) connected to the
Fieldbus must be less than or equal to 5nF and 20uH respectively.
In each I.S. Fieldbus segment only one active source, normally the associated apparatus, is
allowed to provide the necessary power for the Fieldbus system. The allowed voltage (Uo, Voc or
Vt) of the associated apparatus used to supply the bus cable must be limited to the range 14Vdc
to 17.5Vdc. All other equipment connected to the bus cable has to be passive, meaning that the
apparatus is not allowed to provide energy to the system, except a leakage current of 50µA for
each connected device. Separately powered equipment needs galvanic isolation to ensure the
intrinsically safety Fieldbus circuit remains passive.
The cable used to interconnect the devices needs to comply with the following parameters:
Loop resistance R': 15....150/km
Inductance per unit length L':0.4....1mH/km
Capacitance per unit length C': 80....200nF/km
C' = C' line/line+0.5 C' line/screen, if both lines are floating
or
C' = C' line/line + C'line/screen, if the screen is connected to one line.
Length of spur cable: max. 30m
Length of trunk cable: max. 1km
Length of splice: max = 1m
Terminators
At the end of each trunk cable an FM Approved line terminator with the following parameters is
suitable:
R= 90...100
C = 0....2.2µF
System evaluation
The number of passive devices like transmitters, actuators, connected to a single bus segment is
not limited due to nonincendive reasons. Furthermore, if the above rules are respected, the
inductance and the capacitance of the cable need not be considered and will not impair the
intrinsic safety of the installation.
Notes.
1. The FNICO concept allows the interconnection of FM Approved nonincendive devices with
FNICO parameters not specifically examined in combination as a system when:
Uo or Voc or Vt Vmax.
For Canadian installations the FNICO concept allows the interconnection of CFM or CSA
Approved nonincendive devices with FNICO parameters not specifically examined in combination
as a system when:
Uo or Voc or Vt Vmax.

18
APPENDIX 2
IECEx Certification
A2.0 The IECEx Certification Scheme
IECEx is a global certification scheme for explosion
protected products which aims to harmonise
international certification standards.
For additional information about the IECEx
certification scheme and to view the BEKA
associate certificates, please visit www.iecex.com
A2.1 IECEx Certificate of Conformity
The BA418CF-F Fieldbus Indicator has been
issued with an IECEx Certificate of Conformity
number IECEx ITS 06.0013X which specifies the
following certification codes and marking:
Ex ia IIC T4 Ga
FISCO Field Device Ex ia IIC T4
Ta = -40oC to 70oC
See below for details of safe use in Zone 0.
CAUTION
Installation in Zone 0
When installed in a Zone 0 potentially
explosive atmosphere, the indicator shall be
installed such that even in the event of rare
incidents, an ignition source due to impact
or friction between the aluminium enclosure
at the rear of the instrument mounting panel
and iron/steel is excluded.
When connected to an IECEx certified system the
BA418CF-F may be installed in:
Zone 0 explosive gas air mixture
continuously present. Note:
Special conditions for safe use
apply see above.
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
+70oC.
Note: the guaranteed operating temperature range
of the BA418C Fieldbus Indicator is –20 to +70oC
The IECEx safety parameters are identical to the
ATEX parameters and, like the ATEX certification,
confirm that the BA418CF-F complies with the
FISCO Field Device requirements specified in
IEC60079-27.
The IECEx certificate may be downloaded from
www.beka.co.uk, www.iecex.com or requested
from the BEKA sales office.
A2.2 Installation
The BA418CF-F IECEx and ATEX certifications
have identical intrinsic safety parameters and
installation requirements. The ATEX system
design requirements described in section 3 of this
manual may therefore be used for IECEx
installations, but the local code of practice should
always be consulted.