Serviceline Industrial Sensors
Serviceline Explosion Protection

Voltage Repeater KFD2-VR-Ex1.12

  • 1-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • Voltage input 0 V ... 9 V
  • Voltage output 0 V ... 9 V

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-VR-Ex1.12

General specifications
Signal typeAnalog input
ConnectionPower Rail or terminals 11+, 12-
Rated voltage20 ... 35 V DC
Ripplewithin the supply tolerance
Rated current< 20 mA
Connection sidefield side
Connectionterminals 4+, 5-
Input resistancemin. 10 MΩ
Transmission range0 ... 9 V
Offset voltage/current< 2 mV / < 7 nA
Connection sidecontrol side
Connectionterminals 7-, 8+
Voltage0 ... 9 V
Output resistance≤ 20 Ω
Transfer characteristics
Cut-off frequency1.2 kHz (-3 dB)
After calibration± 5 mV at 20 °C (68 °F)
Influence of ambient temperature≤ 0.005 % of range per K
Rise time≤ 0.4 ms
Galvanic isolation
Output/power supplyBasic insulation according to DIN EN 50178, rated insulation voltage of AC 50 V
Display elementsLED
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Insulation coordinationEN 50178
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 100 g
Dimensions20 x 107 x 115 mm (0.8 x 4.2 x 4.5 inch) (W x H x D) , housing type B1
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificateDMT 01 ATEX E 133
MarkingEx-Hexagon I (M1) [Ex ia] I
Voltage12 V
Current2.8 mA
Power8.4 mW
Maximum safe voltage250 V (Attention! The rated voltage is lower.)
Maximum safe voltage250 V (Attention! The rated voltage is lower.)
Galvanic isolation
Input/Outputsafe galvanic isolation acc. to EN 60079-11, voltage peak value 375 V
Input/power supplysafe galvanic isolation acc. to EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 50303:2000
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see


ECLASS 11.027210120
ECLASS 10.0.127210120
ECLASS 9.027210120
ECLASS 8.027210120
ECLASS 5.127210120
ETIM 8.0EC002653
ETIM 7.0EC002653
ETIM 6.0EC002653
ETIM 5.0EC001485
UNSPSC 12.132101514

Details: KFD2-VR-Ex1.12


This isolated barrier is used for intrinsic safety applications. It transfers voltage signals from hazardous areas to safe areas.

The input voltage of the terminals 4 and 5 is transferred to the terminals 7 and 8. The terminals 4 and 8 have the same polarity.

It repeats 0 V ... 9 V signals from strain gauges, transducers, and inductive motion sensors with signal frequencies up to 1.2 kHz.

Product Documentation: KFD2-VR-Ex1.12

Language Selection:
Safety and Security DocumentationLanguageFile TypeFile Size
Instruction manualENGPDF49 KB
System Manual ENGPDF3673 KB

Design / Simulation: KFD2-VR-Ex1.12

Language Selection:
CADLanguageFile TypeFile Size
CAD Portal / CAD PortalALLLINK---
Dimension drawing 3-D / Abmessungszeichnung 3-DALLSTP105 KB

Approvals: KFD2-VR-Ex1.12

Language Selection:
CertificatesCertificate No.LanguageFile TypeFile Size
Europe DEKRA EXAM ATEX Category (M1)DMT 01 ATEX E 133ALLPDF1310 KB
South Africa MASCMASC M/17-0784ALLPDF253 KB
Declaration of Conformity
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0773BALLPDF52 KB

Associated Products: KFD2-VR-Ex1.12

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