Intrinsic Safety Barriers

SMART Transmitter Power Supply KFD2-STC5-Ex2

2-channel isolated barrier
24 V DC supply (Power Rail)
Input 2-wire and 3-wire SMART transmitters and 2-wire SMART current sources
Output 0/4 mA ... 20 mA current sink/current source
Terminals with test points
Up to SIL 2 acc. to IEC 61508

Datasheet
Function
Documents
CAD+CAE
Approvals+Certificates
Associated Products

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-STC5-Ex2

General specifications
Signal type		Analog input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		18 ... 30 V DC
Ripple		within the supply tolerance
Power dissipation		≤ 1.4 W at maximum load
Power consumption		≤ 2.6 W at maximum load
Input
Connection side		field side
Connection		terminals 1+, 2-, 3; 4+, 5-, 6
Input signal		0/4 ... 20 mA
Open circuit voltage/short-circuit current		terminals 1+, 3; 4+, 6: 23 V / 25 mA
Input resistance		max. 265 Ω terminals 2-, 3; 5-, 6 , max. 330 Ω terminals 1+, 3; 4+, 6
Available voltage		≥ 16 V at 20 mA ; ≥ 20 V at 4 mA , terminals 1+, 3; 4+, 6
Output
Connection side		control side
Connection		terminals 7+, 8-, 9-; 10+, 11-, 12- (sink) terminals 7-, 8+, 9+; 10-, 11+, 12+ (source) see additional information
Load		0 ... 600 Ω
Output signal		0/4 ... 20 mA (overload > 25 mA)
Ripple		max. 50 µA _rms
External supply (loop)		2 ... 30 V DC
Transfer characteristics
Deviation		at 20 °C (68 °F), 0/4 ... 20 mA ≤ 10 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
	Influence of ambient temperature	≤ 0.25 µA/K
Frequency range		field side into the control side: band width with 1 V_pp signal 0 ... 7.5 kHz (-3 dB) safe area to hazardous area: band width with 1 V_SS signal 0.3 ... 7.5 kHz (-3 dB)
Settling time		200 µs
Rise time/fall time		100 µs
Galvanic isolation
Output/power supply		functional insulation, rated insulation voltage 50 V AC
Output/Output		functional insulation, rated insulation voltage 50 V AC
Indicators/settings
Display elements		LED
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2013 (industrial locations)
Conformity
Electromagnetic compatibility		NE 21:2012 EN 61326-3-2:2008
Degree of protection		IEC 60529:2001
Protection against electrical shock		UL 61010-1:2012
Ambient conditions
Ambient temperature		-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 200 g
Dimensions		20 x 124 x 115 mm (0.8 x 4.9 x 4.5 inch) , housing type B2
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate		CML 17 ATEX 2031X
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
	Input	[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Supply
	Maximum safe voltage	250 V (Attention! The rated voltage can be lower.)
Equipment		terminals 1+, 3-; 4+, 6-
	Voltage U_o	26.2 V
	Voltage U_q	27.25 V
	Current I_o	93 mA
	Power P_o	634 mW
Equipment		terminals 2-, 3+; 5-, 6+
	Voltage U_i	30 V
	Current I_i	115 mA
	Power P_i	max 1 W
	Voltage U_o	2 V
	Current I_o	8.5 mA
	Power P_o	4.3 mW
Equipment		terminals 1+, 2/3-; 4+, 5/6-
	Voltage U_o	26.2 V
	Voltage U_q	27.25 V
	Current I_o	115 mA
	Power P_o	784 mW
Certificate		CML 17 ATEX 3030X
	Marking	II 3G Ex ec IIC T4 Gc
Galvanic isolation
	Input/Output	safe electrical isolation acc. to IEC/EN 60079-11:2007, voltage peak value 375 V
	Input/power supply	safe electrical isolation acc. to IEC/EN 60079-11:2007, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-7:2015
International approvals
UL approval
	Control drawing	116-0439 (cULus)
IECEx approval		IECEx CML 17.0016X
	Approved for	[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I , Ex ec 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.
Accessories
Optional accessories		- power feed module KFD2-EB2(.R4A.B)(.SP) - universal power rail UPR-03(-M)(-S) - profile rail K-DUCT-BU(-UPR-03)

Documents: KFD2-STC5-Ex2

Manuals	Language	File Type	File Size
Functional Safety Manual	ENG	PDF	697 KB
Manual	ENG	PDF	3430 KB
Handbuch	GER	PDF	3544 KB
Handbuch Funktionale Sicherheit	GER	PDF	664 KB
Instruction manuals
Инструкции	BUL	PDF	150 KB
Návod k poużití	CZE	PDF	145 KB
Instruktions manual	DAN	PDF	143 KB
Instruction manual	ENG	PDF	149 KB
Kasutusjuhend	EST	PDF	140 KB
Käyttöohje	FIN	PDF	139 KB
Manuel d'instructions	FRA	PDF	145 KB
Betriebsanleitung	GER	PDF	149 KB
Οδηγίες χρήσης	GRE	PDF	153 KB
Handleiding	HOL	PDF	143 KB
Instruction manual / Betriebsanleitung	HRV	PDF	142 KB
Használati útmutató	HUN	PDF	144 KB
Manuale di istruzioni	ITA	PDF	143 KB
Lietošanas pamācība	LAV	PDF	143 KB
Instrukciju vadovas	LIT	PDF	144 KB
Instrukcja obsługi	POL	PDF	146 KB
Manual de instruções	POR	PDF	144 KB
Manual de utilizare	RON	PDF	144 KB
Návod na poużitie	SLK	PDF	144 KB
Navodila za uporabo	SLV	PDF	142 KB
Manual de instrucciones	SPA	PDF	144 KB
Manual	SWE	PDF	141 KB

CAD+CAE: KFD2-STC5-Ex2

CAD	File Type	File Size
CAD Portal / CAD Portal	LINK	---
Dimension drawing 2-D (DXF) / Abmessungszeichnung 2-D (DXF)	ZIP	507 KB
Dimension drawing 3-D in IGS format / Abmessungszeichnung 3-D im IGS-Format	IGS	209 KB
Dimension drawing 3-D in STP format / Abmessungszeichnung 3-D im STP-Format	STP	179 KB
EPLAN
EPLAN Data Portal / EPLAN Data Portal	LINK	---
EPLAN macro EDZ / EPLAN Makro EDZ	EDZ	108 KB
Prolist
Prolist device specification / Prolist Gerätespezifikation	XML	343 KB

Approvals+Certificates: KFD2-STC5-Ex2

Statements of compliance	Certificate No.	File Type	File Size
EU-Declaration of conformity / EU-Konformitätserklärung	DOC-3658	PDF	379 KB
Certificates
Belarus Pattern Approval	Nr. 11709	PDF	15640 KB
Brasil TUV Rheinland Brazil	TÜV 19.0464X	PDF	1452 KB
CML IECEx Certificate of Conformity	IECEx CML 17.0016X	LINK	---
Canada UL cUL	E106378 cUL (QUZW7)	LINK	---
Canada UL cUL	E106378 cUL (QVAJ7)	LINK	---
China NEPSI	GYJ19.1284X	PDF	2772 KB
China SITIIAS CCC Ex Certificate	2020322316001440 (Singapore)	PDF	1125 KB
EAC EAC TP TC 012/2011	TC RU C-DE.AA71.B.00291	PDF	2516 KB
EAC EAC TP TC 020/2011	TC RU C-DE.MH04.B.00397	PDF	680 KB
Europe CML ATEX Category 3 G	CML 17ATEX3030X	PDF	129 KB
Europe CML I (M1) II (1) D ATEX II (1) G	CML 17ATEX2031X	PDF	160 KB
India PESO (India) CCOE	A/P/HQ/KA/104/5573 (P418745)	PDF	1080 KB
Japan CML II (1) D II 3 G II (1) G	CML 18 JPN 2186X	PDF	5187 KB
Korea KOSHA	18-AV4BO-0356X	PDF	526 KB
Russia VNIIMS	DE.C.34.004.A No.64324/1	PDF	10397 KB
USA UL	E106378 UL (QVAJ)	LINK	---
USA UL	E106378 UL (QUZW)	LINK	---
Worldwide TUV Rheinland	968/FSP 1498.00/17 EN	PDF	679 KB
Control drawings
/116/1160439a.pdf		PDF	37 KB

Associated Products: KFD2-STC5-Ex2

Accessories

	KFD2-EB2 Power Feed Module
	Interface for Power Rail, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indicationpa

	KFD2-EB2.R4A.B Redundant Power Feed Module
	Interface for Power Rail, Used for redundant configuration, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indicationpa

	UPR-03 Universal Power Rail
	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

	UPR-03-S Universal Power Rail
	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

	KFD2-EB2.R4A.B.SP Redundant Power Feed Module
	Interface for Power Rail, Used for redundant configuration, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indication, Connection via spring terminals with push-in connection technologypa

	KFD2-EB2.SP Power Feed Module
	Interface for Power Rail, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indication, Connection via spring terminals with push-in connection technologypa

	UPR-03-M Universal Power Rail
	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

	K-DUCT-BU Profile Rail
	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
	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

Function: KFD2-STC5-Ex2

This isolated barrier is used for intrinsic safety applications.

The device supplies 2-wire and 3-wire SMART transmitters, and can also be used with 2-wire SMART current sources.

It transfers the analog input signal to the safe area as an isolated current value.

Digital signals may be superimposed on the input signal in the hazardous or non-hazardous area and are transferred bi-directionally.

The device provides a sink mode or a source mode output on the safe area terminals.

The device has an internal resistor. Use this resistor if the HART communication resistance in the control circuit is too low.

Test sockets for the connection of HART communicators are integrated into the terminals of the device.

General Notes Relating to Pepperl+Fuchs Product Information

Quick Links

Pepperl+Fuchs SE
Lilienthalstraße 200
68307 Mannheim
Germany
info@de.pepperl-fuchs.com
phone +49 621 776-0

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.