Serviceline Industrial Sensors
Serviceline Explosion Protection

Switch Amplifier KFD2-SRA-Ex4

KFD2-SRA-Ex4
  • 4-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • Dry contact or NAMUR inputs
  • 50 % less wiring, 2:1 technology
  • Relay contact output
  • Line fault detection (LFD)
  • Reversible mode of operation

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-SRA-Ex4

General specifications
Signal typeDigital Input
Supply
ConnectionPower Rail or terminals 14+, 15-
Rated voltage19 ... 30 V DC
Ripple≤ 10 %
Rated current45 ... 70 mA
Power dissipation1.2 W
Input
Connection sidefield side
Connectionterminals 1-, 2+, 3-; 4-, 5+, 6-
Rated valuesacc. to EN 60947-5-6 (NAMUR), see manual for electrical data
Open circuit voltage/short-circuit currentapprox. 8 V DC / approx. 8 mA
Switching point/switching hysteresis1.2 ... 2.1 mA / approx. 0.2 mA
Pulse/Pause ratiomin. 35 ms / min. 35 ms (non-AC operation) min. 70 ms / min. 70 ms (AC operation)
Line fault detectionbreakage I ≤ 0.15 mA , short-circuit I > 6 mA
Output
Connection sidecontrol side
Connectionoutput I: terminals 7, 8 ; output II: terminals 8, 9 ; output III: terminals 10, 11 ; output IV: terminals 11, 12
Output I ... IVSignal I ... Signal IV ; relay
Contact loading253 V AC/2 A /cos φ > 0.7; 40 V DC/2 A resistive load;
Energized/De-energized delayapprox. 30 ms / approx. 30 ms
Mechanical life5 x 106 switching cycles
Collective error messagePower Rail
Transfer characteristics
Switching frequency≤ 10 Hz (non-AC operation) ≤ 3 Hz (AC operation)
Galvanic isolation
Input/Outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Outputbasic insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Indicators/settings
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)
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Conformity
Electromagnetic compatibilityNE 21:2006
Degree of protectionIEC 60529:2001
InputEN 60947-5-6:2000
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
Height119 mm
Width20 mm
Depth115 mm
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificateZELM 99 ATEX 0009
MarkingEx-Hexagon II (1)G [Ex ia Ga] IIC
Ex-Hexagon II (1)D [Ex ia Da] IIIC
Ex-Hexagon I (M1) [Ex ia Ma] I
InputEx ia IIC
Voltage10 V
Current14 mA
Power35 mW (linear characteristic)
Supply
Maximum safe voltage40 V DC (Attention! Um is no rated voltage.)
Output
Contact loading230 V AC + 10 % / 2 A / 100 VA / cos φ ≥ 0.7; 40 V DC / 2 A resistive load
Fault indication output
Maximum safe voltage40 V DC
Galvanic isolation
Input/inputnot available
Input/Outputsafe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supplysafe 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 50303:2000
International approvals
UL approval
Control drawing116-0145
IECEx approval
IECEx certificateIECEx TUN 04.0003
IECEx marking[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Classifications

SystemClasscode
ECLASS 13.027210121
ECLASS 12.027210121
ECLASS 11.027210121
ECLASS 10.0.127210121
ECLASS 9.027210121
ECLASS 8.027210121
ECLASS 5.127210121
ETIM 9.0EC001485
ETIM 8.0EC001485
ETIM 7.0EC001485
ETIM 6.0EC001485
ETIM 5.0EC001485
UNSPSC 12.132101514

Details: KFD2-SRA-Ex4

Function

This isolated barrier is used for intrinsic safety applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous area to a safe area.

Each sensor or switch controls one form A normally open relay contact for the safe area load. A special 2:1 wiresaving technology is available on this isolator, reducing field wiring by 50 %.

Switch S1 is used to enable or disable line fault detection of the field circuit. The 2:1 mode is selected with switch S2 while the remaining switches, S3 ... S6, are used for reversing the normal output state of the relays.

A unique collective error messaging feature is available when used with the Power Rail system.

Informative Literature: KFD2-SRA-Ex4

Language Selection:
LiteratureLanguageFile TypeFile Size
Application Report - Biological Cleaning of Wastwater and Secondary Sedimentation StageENGPDF566 KB
Application Report - Energy Generation in Wastwater Treatment PlantsENGPDF532 KB
Application Report - Generating Electricity in Coal-Fired Power PlantsENGPDF412 KB
Application Report - Sand Trap and Preliminary Sedimentation StageENGPDF448 KB
Application Report - Screening Systems in Sewage Treatment PlantsENGPDF577 KB
Application Report - Sicherer Brennstofftransport in KohlekraftwerkenENGPDF391 KB
Application Report - Water Inlet in Wastewater Treatment PlantsENGPDF526 KB

Product Documentation: KFD2-SRA-Ex4

Language Selection:
Safety and Security DocumentationLanguageFile TypeFile Size
Instruction manualENGPDF161 KB
Manuals
ManualENGPDF3685 KB

Design / Simulation: KFD2-SRA-Ex4

Language Selection:
CADLanguageFile TypeFile Size
CAD 3-D / CAD 3-DALLSTP2510 KB
CAD Portal / CAD PortalALLLINK---
CAE
CAE EPLAN Data Portal / CAE EPLAN Data PortalALLLINK---
CAE EPLAN macro EDZ / CAE EPLAN Makro EDZALLEDZ1512 KB

Approvals: KFD2-SRA-Ex4

Language Selection:
CertificatesCert No.LanguageFile TypeFile Size
Australia SIMTARSANZEx 13.2005ALLPDF296 KB
Canada UL cULE106378 cUL (QUZW7)ALLLINK---
DNV MarineTAA00001WXALLPDF106 KB
Europe ZELM ATEX Category (1) GD ATEX Category (M1)ZELM 99 ATEX 0009ALLPDF1585 KB
India PESO (India) CCOEA/P/HQ/KA/104/5914 (P515190)ALLPDF100 KB
SITIIAS CCC Ex Certificate2021322316003615 (Singapore)ALLPDF1072 KB
South Africa MASCMASC MS/19-6054ALLPDF665 KB
TUV Nord IECEx Certificate of ConformityIECEx TUN 04.0003ALLLINK---
USA Canada UL Hazardous Location Certificate of Compliance cULus UL E106378CoC 20160608 - E106378 RepRef 19970520ALLPDF246 KB
USA ULE106378 UL (QUZW)ALLLINK---
United Kingdom CML UK-Type Examination Certificate UKEX Category (1) D UKEX Category (1) G UKEX Category (M1)CML 21UKEX2936ALLPDF148 KB
Control Drawings
Control drawing UL / Control drawing UL   ALLPDF165 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)DOC-0255CALLPDF109 KB

Associated Products: KFD2-SRA-Ex4

Matching System Components
Interface for Power Rail, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indicationpa
35 mm DIN mounting rail with 3-conductor insert, Provides DC supply voltage to all equipped K-System modules, Standard length 2 m (6 foot), simple to customize to application space, Eliminates daisy-chainspa
35 mm DIN mounting rail with 3-conductor insert, Provides DC supply voltage to all equipped K-System modules, Standard length 1.6 m (5 foot), simple to customize to application space, Eliminates daisy-chainspa
35 mm DIN mounting rail with 3-conductor insert, Provides DC supply voltage to all equipped K-System modules, Standard length 0.8 m (2.6 ft), simple to customize to application space, Eliminates daisy-chainspa
Cable trunking is integrated in the mounting profile, Safe spacious separation of safe and hazardous signals, No additional cable guides necessary, Standard length 1.8 m (5.8 ft), simple to customize to application space, With mounting aidspa
Cable trunking with integrated Power Rail UPR-03, Safe spacious separation of safe and hazardous signals, No additional cable guides necessary, Provides DC supply voltage to all equipped K-System modules, Standard length 1.8 m (5.8 ft), simple to customize to application space, With end caps UPR-E, cover and mounting aidspa
Accessories
1-channel, Dry contact input, For line fault detection (LFD)pa
2-channel, NAMUR sensor input, Reduces field wiring by 50%, Supports 2:1 technologypa
2-channel, Dry contact input, Reduces field wiring by 50%, Supports 2:1 technologypa
3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces greenpa
3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces bluepa
Coding of K-System terminal blocks, Coding of LB/FB-System front sockets, Packaging unit: 20 x 6 coding pinspa
Safety Products Selector

Choose from various selection criteria like safety integrity level, performance level, device function, and signal type and find the SIL/PL assessed device that you are looking for.