Serviceline Industrial Sensors
Serviceline Explosion Protection

HART Loop Converter KFD2-HLC-Ex1.D.2W

  • 1-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • HART field device input with transmitter power supply
  • Usable as signal splitter (1 input and several outputs)
  • 2 relay contact outputs (change-over contacts)
  • 3 analog outputs 4 mA ... 20 mA
  • Sink and source mode output
  • Configurable by keypad

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  KFD2-HLC-Ex1.D.2W

General specifications
Signal typeAnalog input
ConnectionPower Rail or terminals 23+, 24-
Rated voltage19 ... 30 V DC
Rated currentapprox. 130 mA at 24 V DC
Power dissipation2.5 W
Power consumption3.1 W
HART signal channels (intrinsically safe)
ConformityHART field device input (revision 5 to 7)
Programming interfaceprogramming socket
Connection sidefield side
Connectionterminals 1, 2, 3, 4, 5, 6
Open circuit voltage/short-circuit currenttyp. 24 V / 28 mA
Input resistance250 Ω , 5 % (terminals 2, 3 and with jumper on 5, 6)
Available voltage≥ 15.5 V at 20 mA, short-circuit protected
Connection sidecontrol side
Connectionoutput I: terminals 10, 11, 12, output II: terminals 16, 17, 18
output III: terminals 7, 8, 9, output IV: terminals 13, 14, 15, output V: terminals 19, 20, 21
Output I, II
Output signalrelay and LED yellow
Mechanical life107 switching cycles
Energized/De-energized delayapprox. 20 ms / approx. 20 ms
Output III, IV, V
Output signalanalog
Current range4 ... 20 mA , (source or sink mode)
Loadmax. 650 Ω , source mode
Voltage range5 ... 30 V , sink mode from external supply
Fault signaldownscale I ≤ 2 mA, upscale I ≥ 21.5 mA (acc. NAMUR NE43) or hold measurement value
Other outputsHART communicator on terminals 22, 24
Collective error messagePower Rail and LED red
Transfer characteristics
Output III, IV, V
Resolutionmax. 2 µA
Accuracy< 20 µA, 10 µA typ.
Influence of ambient temperature< ± 2 µA/K
Duration of measurement/Response delayHART message acquisition time plus 100 ms
Relayprogrammable either for fault or trip value (with direction, hysteresis and delay)
Galvanic isolation
Output I/IIfunctional insulation acc. to IEC 62103, rated insulation voltage 250 Veff
Output I, II/other circuitsreinforced insulation acc. to IEC 62103, rated insulation voltage 300 Vrms
Output III/IV/V/power supplyfunctional insulation acc. to IEC 62103, rated insulation voltage 50 Veff
Display elementsLEDs , display
Control elementsControl panel
Configurationvia operating buttons
via PACTware
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Electromagnetic compatibilityNE 21:2006
Degree of protectionIEC 60529:2001
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Mass300 g
Dimensions40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) (W x H x D) , housing type C2
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificateBASEEFA 07 ATEX 0174
MarkingEx-Hexagon II (1)G [Ex ia Ga] IIC
Ex-Hexagon II (1)D [Ex ia Da] IIIC
Maximum safe voltage253 V AC (Attention! The rated voltage can be lower.)
Equipmentterminals 1, 4/3 (with link between terminals 4 and 5)
Voltage25.2 V
Current104.9 mA
Power0.661 W
Internal capacitance1.1 nF
Internal inductance0 mH
Equipmentterminals 2, 5/3
Voltage< 28 V
Power< 1.33 W
Voltage1.1 V
Current11.9 mA
Power4 mW
Internal capacitance0 µF
Internal inductance0 mH
Output I, IIterminals 10, 11, 12; 16, 17, 18 , non-intrinsically safe
Maximum safe voltage253 V (Attention! Um is no rated voltage.)
Contact loading253 V AC/1 A/cos φ > 0.7; 30 V DC/1 A resistive load (BASEEFA 07 ATEX 0174)
50 V AC/1 A/cos φ > 0.7; 30 V DC/1 A resistive load (Pepperl+Fuchs self-declaration)
Output III, IV, Vterminals 7, 8, 9; 13, 14, 15; 19, 20, 21 , non-intrinsically safe
Maximum safe voltage253 V (Attention! Um is no rated voltage.)
CertificatePF 07 CERT 1141 X
MarkingEx-Hexagon II 3G Ex nA nC IIC T4 Gc
Galvanic isolation
Input/Other circuitssafe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EUEN IEC 60079-0:2018+AC:2020 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
FM approval
Control drawing116-0129
IECEx approval
IECEx certificateIECEx BAS 07.0047
IECEx marking[Ex ia Ga] IIC , [Ex ia Da] IIIC
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see


ECLASS 11.027210190
ECLASS 10.0.127210190
ECLASS 9.027210190
ECLASS 8.027210190
ECLASS 5.127242692
ETIM 8.0EC001601
ETIM 7.0EC001601
ETIM 6.0EC001601
ETIM 5.0EC001597
UNSPSC 12.139121008

Details: KFD2-HLC-Ex1.D.2W


This isolated barrier is used for intrinsic safety applications. It is a HART loop converter that provides power to transmitters or can be connected to existing HART loops in parallel.

It is able to evaluate up to four HART variables (PV, SV, TV, QV). Of those four HART variables, the data contained in any three of them can be converted to three different 4 mA ... 20 mA current signals. These loop signals can be connected to display devices or analog inputs on the process control system/ control system.

In addition to the current outputs, two form C changeover relay contacts are available and can be programmed to operate at trip values from the HART variables.

The unit is easily programmed by the use of a keypad located on the front of the unit or with the PACTware™ configuration software.

For additional information, refer to the manual and

Product Documentation: KFD2-HLC-Ex1.D.2W

Language Selection:
Brief InstructionsLanguageFile TypeFile Size
Operator card KF**-HLC-**1.D* / Bedienkarte KF**-HLC-**1.D*ALLPDF981 KB
Safety and Security Documentation
Instruction manualENGPDF170 KB
Manual KF**-HLC-**1.D*ENGPDF4267 KB
System Manual ENGPDF3673 KB

Design / Simulation: KFD2-HLC-Ex1.D.2W

Language Selection:
CADLanguageFile TypeFile Size
Dimension drawing 3-D / Abmessungszeichnung 3-DALLSTP870 KB
CAE EPLAN Data Portal / CAE EPLAN Data PortalALLLINK---

Approvals: KFD2-HLC-Ex1.D.2W

Language Selection:
CertificatesCertificate No.LanguageFile TypeFile Size
Baseefa IECEx Certificate of ConformityIECEx BAS 07.0047ALLLINK---
Brasil TUV Rheinland BrazilTÜV 13.2090ALLPDF1210 KB
Canada FMFM22CA0014XALLPDF317 KB
China SITIIAS CCC Ex Certificate2021322316004122 (Singapore)ALLPDF1342 KB
Europe Baseefa ATEX Category (1) G ATEX Category (1) DBaseefa 07 ATEX 0174ALLPDF3311 KB
Europe Pepperl+Fuchs Certificate of Compliance ATEX Category 3 G ATEX Category 3PF 07 CERT 1141XALLPDF227 KB
Control Drawings
Control Drawing FM / Control Drawing FM   ALLPDF58 KB
Declaration of Conformity
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0646DALLPDF83 KB

Software: KFD2-HLC-Ex1.D.2W

Language Selection:
FrameworksRelease InfoFile TypeFile Size
PACTware 4.1 SP6 / PACTware 4.1 SP64.1.0.53ZIP43327 KB
PACTware 5.0 / PACTware KB
Device Description Files/Drivers
DTM Collection HART Loop Converter / DTM Collection HART Loop Converter1.0.6.0ZIP13857 KB

Associated Products: KFD2-HLC-Ex1.D.2W

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