Switch Amplifier KFD2-SR2-Ex2.2S

2-channel isolated barrier
24 V DC supply (Power Rail)
Dry contact or NAMUR inputs
Usable as signal splitter (1 input and 2 outputs)
2 x 2 relay contact outputs with AND logic
Line fault detection (LFD)
Reversible mode of operation
Up to SIL 2 acc. to IEC/EN 61508

Technical Data
Details
Informative Literature
Product Documentation
Design / Simulation
Approvals
Associated Products
Ask an Expert

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-SR2-Ex2.2S

General specifications
Signal type		Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		20 ... 30 V DC
Ripple		≤ 10 %
Rated current		≤ 50 mA
Power dissipation		1 W
Power consumption		< 1.3 W
Input
Connection side		field side
Connection		terminals 1+, 2+, 3-; 4+, 5+, 6-
Rated values		acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage/short-circuit current		approx. 8 V DC / approx. 8 mA
Switching point/switching hysteresis		1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection		breakage I ≤ 0.1 mA , short-circuit I > 6 mA
Pulse/Pause ratio		min. 20 ms / min. 20 ms
Output
Connection side		control side
Connection		output I: terminals 7, 8 ; output II: terminals 8, 9 ; output III: terminals 10, 11 ; output IV: terminals 11, 12
Output I, II, III, IV		channel 1, 2; relay
Contact loading		50 V AC/1 A/cos φ > 0.7; 40 V DC/1 A resistive load
Minimum switch current		1 mA / 24 V DC
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		10⁸ switching cycles
Collective error message		Power Rail
Transfer characteristics
Switching frequency		≤ 10 Hz
Galvanic isolation
Input/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Input/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/power supply		basic insulation according to IEC/EN 61010-1, rated insulation voltage 32 V_eff , functional insulation, rated insulation voltage 50 V_eff
Output/Output		basic insulation according to IEC/EN 61010-1, rated insulation voltage 32 V_eff , functional insulation, rated insulation voltage 50 V_eff
Indicators/settings
Display elements		LEDs
Control elements		DIP switch
Configuration		via DIP switches
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Low voltage
	Directive 2014/35/EU	EN 61010-1:2010
Conformity
Electromagnetic compatibility		NE 21:2004
Degree of protection		IEC 60529:2001
Input		EN 60947-5-6:2000
Ambient conditions
Ambient temperature		-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 150 g
Dimensions		20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
	Height	119 mm
	Width	20 mm
	Depth	115 mm
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate		PTB 00 ATEX 2083
	Marking	II (1)GD [EEx ia] IIC [circuit(s) in zone 0/1/2]
	Input	EEx ia IIC
	Voltage	10.5 V
	Current	13 mA
	Power	34 mW (linear characteristic)
Supply
	Maximum safe voltage	253 V AC / 125 V DC (Attention! U_m is no rated voltage.)
Output
	Contact loading	50 V AC/1 A/cos φ > 0.7; 40 V DC/1 A resistive load
	Maximum safe voltage	253 V AC (Attention! The rated voltage can be lower.)
Certificate		TÜV 99 ATEX 1493 X
	Marking	II 3G Ex ec nC IIC T4 Gc
Galvanic isolation
	Input/input	not available
	Input/Output	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
	Input/power supply	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN IEC 60079-0:2018 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012 , EN IEC 60079-15:2019
International approvals
FM approval
	FM certificate	FM19US0207X
	Control drawing	116-0035
CSA approval
	Control drawing	116-0047
IECEx approval
	IECEx certificate	IECEx TUN 19.0013X
	IECEx marking	Ex ec nC IIC T4 Gc
General information
Supplementary information		Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Classifications

System	Classcode
ECLASS 13.0	27210121
ECLASS 12.0	27210121
ECLASS 11.0	27210121
ECLASS 10.0.1	27210121
ECLASS 9.0	27210121
ECLASS 8.0	27210121
ECLASS 5.1	27210121
ETIM 9.0	EC001485
ETIM 8.0	EC001485
ETIM 7.0	EC001485
ETIM 6.0	EC001485
ETIM 5.0	EC001485
UNSPSC 12.1	32101514

Details: KFD2-SR2-Ex2.2S

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 two form A normally open relay contacts for the safe area load. The normal output state can be reversed using switches S1 and S2.

Switch S3 is used to enable or disable line fault detection of the field circuit.

During an error condition, the relays revert to their de-energized state and the LEDs indicate the fault according to NAMUR NE44.

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

Informative Literature: KFD2-SR2-Ex2.2S

Literature	Language	File Type	File Size
Application Report - Biological Cleaning of Wastwater and Secondary Sedimentation Stage	ENG	PDF	566 KB
Application Report - Energy Generation in Wastwater Treatment Plants	ENG	PDF	532 KB
Application Report - Generating Electricity in Coal-Fired Power Plants	ENG	PDF	412 KB
Application Report - Sand Trap and Preliminary Sedimentation Stage	ENG	PDF	448 KB
Application Report - Screening Systems in Sewage Treatment Plants	ENG	PDF	577 KB
Application Report - Sicherer Brennstofftransport in Kohlekraftwerken	ENG	PDF	391 KB
Application Report - Water Inlet in Wastewater Treatment Plants	ENG	PDF	526 KB

Product Documentation: KFD2-SR2-Ex2.2S

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	50 KB
Safety Manual	ENG	PDF	450 KB
Manuals
Manual	ENG	PDF	3685 KB

Design / Simulation: KFD2-SR2-Ex2.2S

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	2510 KB
CAD Portal / CAD Portal	ALL	LINK	---
CAE
EPLAN macro EDZ / EPLAN Makro EDZ	ALL	EDZ	66 KB

Approvals: KFD2-SR2-Ex2.2S

Certificates	Certificate No.	Language	File Type	File Size
Canada CSA	CoC 1029981 C	ALL	PDF	177 KB
DNV Marine	TAA00001WX	ALL	PDF	106 KB
Europe PTB ATEX Category (1)	PTB 00 ATEX 2083	ALL	PDF	497 KB
Europe TUV II 3 G	TÜV 99 ATEX 1493X	ALL	PDF	2538 KB
Korea KOSHA	12-AV4BO-0392	ALL	PDF	583 KB
PTB IECEx Certificate of Conformity	IECEx PTB 05.0019	ALL	LINK	---
South Africa MASC	MASC S/22-8373X	ALL	PDF	713 KB
TUV Nord IECEx Certificate of Conformity	IECEx TUN 19.0013X	ALL	LINK	---
USA FM	FM 19 US 0207X	ALL	PDF	350 KB
exida Functional Safety Assessment	P+F 02/4-12 R007	ALL	PDF	370 KB
Control Drawings
Control drawing FM / Control drawing FM		ALL	PDF	130 KB
Control drawing CSA / Control drawing CSA		ALL	PDF	159 KB
Declaration of Conformity
EU Declaration of Conformity (P+F)	TDOC-0044BENG	ENG	PDF	183 KB

Associated Products: KFD2-SR2-Ex2.2S

Matching System Components

	UPR-03 Universal Power Rail	308.00 USD Netlist price. Your individual price will be calculated during checkout. In stock Item 'UPR-03' added to cart!
	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

	KFD2-EB2 Power Feed Module	160.00 USD Netlist price. Your individual price will be calculated during checkout. In stock Item 'KFD2-EB2' added to cart!
	Interface for Power Rail, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indicationpa

	UPR-03-M Universal Power Rail	Contact Us
	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

	UPR-03-S Universal Power Rail	151.00 USD Netlist price. Your individual price will be calculated during checkout. In stock Item 'UPR-03-S' added to cart!
	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

	K-DUCT-BU Profile Rail	Contact Us
	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

	K-DUCT-BU-UPR-03 Profile Rail	Contact Us
	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

	F-NR3-Ex1 NAMUR Resistor Network	Contact Us
	1-channel, Dry contact input, For line fault detection (LFD)pa

	KF-ST-5GN Terminal Block	Contact Us
	3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces greenpa

	KF-ST-5BU Terminal Block	Contact Us
	3-pin screw terminal, For KF modules of K-System, Packaging unit: 5 pieces bluepa

	KF-CP Coding Pins	Contact Us
	Coding of K-System terminal blocks, Coding of LB/FB-System front sockets, Packaging unit: 20 x 6 coding pinspa

General Notes Relating to Pepperl+Fuchs Product Information

Quick Links

Selector for Safety Products

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.

Pepperl+Fuchs Inc.
1600 Enterprise Parkway
Twinsburg, OH 44087
United States of America
sales@us.pepperl-fuchs.com
phone +1 330 425-3555

Pepperl+Fuchs is a leading developer and manufacturer of electronic sensors and components for the global automation market. Continuous innovation, enduring quality, and steady growth have been the foundation of our success for more than 70 years. Pepperl+Fuchs employs 6,300 people worldwide and has manufacturing facilities in Germany, USA, Singapore, Hungary, Indonesia and Vietnam, most of them ISO 9001 certified. Pepperl+Fuchs does not sell personal data.