Intrinsic Safety Barriers

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Switch Amplifier KFA6-SR2-Ex2.W

2-channel isolated barrier
230 V AC supply
Dry contact or NAMUR inputs
Relay contact output
Line fault detection (LFD)
Reversible mode of operation
Up to SIL 2 acc. to IEC/EN 61508 / IEC/EN 61511

Technical Data
Details
Informative Literature
Product Documentation
Design / Simulation
Approvals
Associated Products
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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 KFA6-SR2-Ex2.W

General specifications
Signal type		Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		terminals 14, 15
Rated voltage		207 ... 253 V AC, 45 ... 65 Hz
Power dissipation		1.2 W
Power consumption		max. 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, 9 ; output II: terminals 10, 11, 12
Output I, II		signal ; relay
Contact loading		253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		10⁷ switching cycles
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		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Indicators/settings
Display elements		LEDs
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 21:2006
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 2081
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
	Input	Ex ia
	Voltage	10.6 V
	Current	19.1 mA
	Power	51 mW (linear characteristic)
Supply
	Maximum safe voltage	253 V AC (Attention! U_m is no rated voltage.)
Output
	Contact loading	253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load
	Maximum safe voltage	253 V AC (Attention! The rated voltage can be lower.)
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+AC:2020 , EN 60079-11:2012
International approvals
FM approval
	Control drawing	116-0035
UL approval
	Control drawing	116-0145
CSA approval
	Control drawing	116-0047
IECEx approval
	IECEx certificate	IECEx PTB 11.0031
	IECEx marking	[Ex ia Ga] IIC [Ex ia Da] IIIC [Ex ia Ma] I
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: KFA6-SR2-Ex2.W

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.

The proximity sensor or switch controls a form C changeover relay contact 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.

Informative Literature: KFA6-SR2-Ex2.W

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: KFA6-SR2-Ex2.W

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	176 KB
Safety Manual	ENG	PDF	450 KB
Manuals
Manual	ENG	PDF	3685 KB

Design / Simulation: KFA6-SR2-Ex2.W

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	2510 KB
CAD Portal / CAD Portal	ALL	LINK	---
CAE
CAE EPLAN Data Portal / CAE EPLAN Data Portal	ALL	LINK	---
CAE EPLAN macro EDZ / CAE EPLAN Makro EDZ	ALL	EDZ	1514 KB

Approvals: KFA6-SR2-Ex2.W

Certificates	Certificate No.	Language	File Type	File Size
Australia SIMTARS	ANZEx 11.2009	ALL	PDF	318 KB
Brasil TUV Rheinland Brazil	TÜV 13.1164	ALL	PDF	1141 KB
Canada CSA	CoC 1029981 C	ALL	PDF	177 KB
Canada UL cUL	E106378 cUL (QUZW7)	ALL	LINK	---
China SITIIAS CCC Ex Certificate	2020322316001423 (Bintan)	ALL	PDF	2017 KB
DNV Marine	TAA00001WX	ALL	PDF	106 KB
Europe PTB ATEX Category (1) GD	PTB 00 ATEX 2081	ALL	PDF	1544 KB
Japan TIIS	TC15886	ALL	PDF	2267 KB
Korea KOSHA	09-AV4BO-0224-1	ALL	PDF	350 KB
PTB IECEx Certificate of Conformity	IECEx PTB 11.0031	ALL	LINK	---
South Africa MASC	MASC MS/17-0856	ALL	PDF	608 KB
USA Canada UL Hazardous Location Certificate of Compliance cULus UL E106378	CoC 20160608 - E106378 RepRef 19970520	ALL	PDF	246 KB
USA FM	FM 19 US 0207X	ALL	PDF	350 KB
USA UL	E106378 UL (QUZW)	ALL	LINK	---
Ukraine SERTIS Ex	SC 21.0646 X	ALL	PDF	12351 KB
exida Functional Safety Assessment	P+F 02/4-12 R007	ALL	PDF	370 KB
Control Drawings
Control drawing UL / Control drawing UL		ALL	PDF	165 KB
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) / EU-Konformitäterklärung (P+F)	DOC-0636D	ALL	PDF	56 KB

Associated Products: KFA6-SR2-Ex2.W

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Pepperl+Fuchs GB Ltd.
77 Ripponden Road
Oldham OL1 4EL, Lancs.
United Kingdom
sales@gb.pepperl-fuchs.com
phone +44 161 6336431

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.