Intrinsic Safety Barriers

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SMART Current Driver KFD2-SCD-Ex1.LK

1-channel isolated barrier
24 V DC supply (Power Rail)
Current output up to 700 Ω load
HART I/P and valve positioner
Line fault detection (LFD)
Accuracy 0.1 %
Terminal blocks with test sockets
Up to SIL 2 acc. to IEC 61508

Datasheet
Details
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 KFD2-SCD-Ex1.LK

General specifications
Signal type		Analog output
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		Power Rail or terminals 11+, 12-
Rated voltage		20 ... 35 V DC
Ripple		within the supply tolerance
Power dissipation		1.1 W at 20 mA into 10 V (equivalent to 500 Ω) load
Power consumption		1.3 W
Input
Connection side		control side
Connection		terminals 7-, 8+
Voltage drop		approx. 4 V or internal resistance 200 Ω at 20 mA
Input resistance		> 100 kΩ, when wiring resistance in the field < 50 Ω or > 800 Ω at 20 mA
Current		4 ... 20 mA limited to approx. 25 mA
Output
Connection side		field side
Connection		terminals 1+, 2-
Voltage		≥ 14 V at 20 mA
Current		4 ... 20 mA
Load		100 ... 700 Ω
Transfer characteristics
Accuracy		0.1 %
Deviation
	After calibration	at 20 °C (68 °F): ≤ ± 0.1 % incl. non-linearity and hysteresis
	Influence of ambient temperature	≤ ± 20 ppm/K
Rise time		< 100 µs at bounce from 10 ... 90 %
Galvanic isolation
Input/power supply		basic insulation acc. to EN 50178, rated insulation voltage of 50 V AC
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)
Conformity
Insulation coordination		EN 50178:1997
Galvanic isolation		EN 50178:1997
Electromagnetic compatibility		NE 21:2006
Degree of protection		IEC 60529:2001
Ambient conditions
Ambient temperature		-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 100 g
Dimensions		20 x 115 x 115 mm (0.8 x 4.5 x 4.5 inch) , housing type B1
	Height	115 mm
	Width	20 mm
	Length	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		BAS 00 ATEX 7215
	Marking	II (1)G [Ex ia Ga] IIC , II (1)D [Ex ia Da] IIIC , I (M1) [Ex ia Ma] I
	Output	Ex ia IIC, Ex iaD
	Voltage	25.2 V
	Current	93 mA
	Power	0.58 W
Supply
	Maximum safe voltage	250 V _rms (Attention! The rated voltage can be lower.)
Certificate		TÜV 99 ATEX 1499 X
	Marking	II 3G Ex nA II T4 [device in zone 2]
Galvanic isolation
	Input/Output	safe electrical isolation acc. to EN 60079-11, voltage peak value 375 V
	Output/power supply	safe electrical isolation acc. to EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
FM approval
	Control drawing	116-0129
UL approval
	Control drawing	116-0173 (cULus)
IECEx approval		IECEx BAS 16.0045
	Approved for	[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.
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)

Classifications

System	Classcode
ECLASS 13.0	27210120
ECLASS 12.0	27210120
ECLASS 11.0	27210120
ECLASS 10.0.1	27210120
ECLASS 9.0	27210120
ECLASS 8.0	27210120
ECLASS 5.1	27210120
ETIM 9.0	EC002653
ETIM 8.0	EC002653
ETIM 7.0	EC002653
ETIM 6.0	EC002653
ETIM 5.0	EC001485
UNSPSC 12.1	32101514

Details: KFD2-SCD-Ex1.LK

Function

This isolated barrier is used for intrinsic safety applications. It drives SMART I/P converters, electrical valves, and positioners in hazardous areas.

Digital signals are superimposed on the analog values at the field or control side and are transferred bi-directionally.

Current transferred across the DC/DC converter is repeated at terminals 1 and 2.

An open field circuit presents a high input impedance to the control side to allow lead breakage monitoring by control system.

If the loop resistance for the digital communication is too low, an internal resistor of 250 Ω between terminals 8 and 9 is available, which may be used as the HART communication resistor.

Sockets for the connection of a HART communicator are integrated into the terminals of the device.

Product Documentation: KFD2-SCD-Ex1.LK

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

Design / Simulation: KFD2-SCD-Ex1.LK

CAD	Language	File Type	File Size
CAD 2-D / CAD 2-D	ALL	ZIP	450 KB
CAD 3-D / CAD 3-D	ALL	STP	105 KB
CAE
CAE EPLAN Data Portal / CAE EPLAN Data Portal	ALL	LINK	---
EPLAN macro EDZ / EPLAN Makro EDZ	ALL	EDZ	55 KB

Approvals: KFD2-SCD-Ex1.LK

Certificates	Certificate No.	Language	File Type	File Size
Baseefa IECEx Certificate of Conformity	IECEx BAS 16.0045	ALL	LINK	---
Canada UL cUL	E106378 cUL (QUZW7)	ALL	LINK	---
Europe Baseefa II (1) D I (M1) II (1) G	BAS 00 ATEX 7215	ALL	PDF	2524 KB
Europe TUV Nord ATEX Category 3 G	TÜV 99 ATEX 1499X	ALL	PDF	1999 KB
Korea KOSHA	19-AV4BO-0026	ALL	PDF	100 KB
USA Canada UL Hazardous Location Certificate of Compliance cULus UL E106378	CoC 20140902 - E106378 RepRef 20011030	ALL	PDF	429 KB
USA FM	CoC 1Z2A1.AX	ALL	PDF	78 KB
USA UL	E106378 UL (QUZW)	ALL	LINK	---
exida Functional Safety Assessment	P+F 03/10-12 R014	ALL	PDF	302 KB
Control Drawings
Control drawing UL / Control drawing UL		ALL	PDF	1092 KB
Control drawing FM / Control drawing FM		ALL	PDF	58 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-0782B	ALL	PDF	55 KB

Associated Products: KFD2-SCD-Ex1.LK

Accessories

	KFD2-EB2.R4A.B Redundant Power Feed Module	162.00 USD Netlist price. Your individual price will be calculated during checkout. In stock Item 'KFD2-EB2.R4A.B' added to cart!
	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	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 Contact Us Item 'KFD2-EB2' added to cart!
	Interface for Power Rail, Supply current ≤ 4 A, Replaceable fuse, Relay contact output, reversible, LED status indicationpa

	KFD2-EB2.R4A.B.SP Redundant Power Feed Module	Contact Us
	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	Contact Us
	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	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

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Pepperl+Fuchs Inc.
1600 Enterprise Parkway
Twinsburg, OH 44087
USA
- responsible for Canada -
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.