Serviceline Industrial Sensors
Serviceline Explosion Protection

Solenoid Driver KFD2-RCI-1

  • 1-channel signal conditioner
  • 24 V DC supply (Power Rail)
  • Output 20.4 mA at 13.5 V DC
  • 19 V DC ... 30 V DC input
  • Test pulse immunity
  • Line fault detection (LFD)
  • Up to SIL 3 acc. to IEC/EN 61508

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-RCI-1

General specifications
Signal typeDigital Output
Functional safety related parameters
Safety Integrity Level (SIL)SIL 3
ConnectionPower Rail or terminals 14+, 15-
Rated voltage19 ... 30 V DC
Rated current< 35 mA
Power consumption< 0.8 W
Connection sidecontrol side
Connectionterminals 10+, 11-
Test pulse lengthmax. 2 ms from DO card
Input current40 mA at 19 ... 30 V DC
Signal level1-signal: 19 ... 30 V DC
0-signal: 0 ... 5 V DC
Power consumption< 1.2 W
Operating modeloop powered
Connection sidefield side/control side
Connectionterminals 1+, 3- (terminals 1+, 2 for test loop)
Internal resistorapprox. 275 Ω
Current≤ 20.4 mA
Voltage≥ 13.5 V
Open loop voltage> 16 V
Voltage1-signal: > 13.5 V
Current1-signal: 20.4 A
0-signal: 4.2 mA
Loadmax. 650 Ω
Response time< 40 ms input to output
Line fault detectionshort circuit voltage < 1 V , open circuit voltage > 16 V
Output II
Connectionterminal 7: source (-) or sink (+), terminal 8: source (+), terminal 9: sink (-)
Current11 mA (source or sink mode)
Voltage9 ... 30 V sink mode from external supply
Loadmax. 650 Ω , source mode , for HART ≥ 230 Ω
Communicationpass-through of HART signal between input II and output
Galvanic isolation
Field circuit/control circuitbasic insulation according to IEC 61010-1, rated insulation voltage 300 Veff
Input/power supplyfunctional insulation, rated insulation voltage 50 Veff
Output II/power supplyfunctional insulation, rated insulation voltage 50 Veff
Display elementsLEDs
Control elementsDIP switch
Configurationvia DIP switches
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Electromagnetic compatibilityNE 21:2012
Degree of protectionIEC 60529:2001
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 150 g
Dimensions20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
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 5.127210121
ETIM 8.0EC001485
ETIM 7.0EC001485
ETIM 6.0EC001485
ETIM 5.0EC001485
UNSPSC 12.139121008

Details: KFD2-RCI-1


This signal conditioner provides galvanic isolation between field circuits and control circuits.

The device can be used in emergency shutdown applications with HART positioners.

Via the logic input the positioner is energized or de-energized (emergency shutdown).

Independent of the status, a second input enables HART communication with the positioner. With this the asset management system can request for example diagnostic information or can initiate a partial stroke test.

The HART communication also works with de-energized positioner.

If the device is operated via Power Rail, additionally a collective error message is available.

Product Documentation: KFD2-RCI-1

Language Selection:
Safety and Security DocumentationLanguageFile TypeFile Size
Instruction manualENGPDF41 KB
Functional Safety ManualENGPDF597 KB
System Manual ENGPDF3683 KB

Design / Simulation: KFD2-RCI-1

Language Selection:
CADLanguageFile TypeFile Size
3-D model / 3-D-ModellALLSTP2510 KB

Approvals: KFD2-RCI-1

Language Selection:
CertificatesCertificate No.LanguageFile TypeFile Size
exida Functional Safety AssessmentP+F 0905-35R1-C R015 V1R0ALLPDF599 KB
Declaration of Conformity
EU-Declaration of conformityTDOC-7214_ENGENGPDF219 KB
UK-Declaration of conformityTDOC-7231_ENGENGPDF192 KB

Associated Products: KFD2-RCI-1

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