SMART Current Driver/Repeater KFD0-SCS-Ex1.55

1-channel isolated barrier
24 V DC supply (loop powered)
Current input/output 4 mA ... 20 mA
HART-IP or transmitter power supply
Low voltage drop
Line fault detection (LFD)
Up to SIL 2 acc. to IEC/EN 61508

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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 KFD0-SCS-Ex1.55

General specifications
Signal type		Analog input/analog output
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Rated voltage		< 30 V DC , loop powered
Power dissipation		0.2 W
Control circuit
Connection		terminals 8-, 9+
Voltage		max. 30 V DC
Current		4 ... 20 mA (quiescent current < 0.5 mA)
Power dissipation		150 mW at 20 mA and U_in < 24 V
Field circuit
Connection		terminals 1+, 2 / 3-
Voltage		≥ 16 V for supply voltage > 21 V
Current		4 ... 20 mA (linear transmission 1 ... 22 mA)
Load		≤ 800 Ω (at 20 mA)
Transfer characteristics
Voltage drop		see note
Deviation
	After calibration	≤ ± 80 µA linearity, load and voltage dependence at 20 °C (68 °F)
Influence of ambient temperature		< 0.5 µA/K
Damping		approx. 3 dB
Rise time		≤ 20 µs at 0 Ω, ≤ 600 µs with 800 Ω load
Galvanic isolation
Input/Output		safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Indicators/settings
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 21:2007
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. 120 g
Dimensions		20 x 124 x 115 mm (0.8 x 4.9 x 4.5 inch) (W x H x D) , housing type B2
	Height	112 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 02 ATEX 2064
	Marking	II (2)G [Ex ib Gb] IIC
	Voltage	23.1 V DC
	Current	28 mA
	Power	0.647 W
Supply
	Maximum safe voltage	253 V (Attention! The rated voltage can be lower.)
Certificate		PF 11 CERT 0902 X
	Marking	II 3G Ex nA IIC T4 Gc
Galvanic isolation
	Input/Output	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 , EN 60079-15:2010
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	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: KFD0-SCS-Ex1.55

Function

This isolated barrier is used for intrinsic safety applications. It is loop powered and isolates a 4 mA ... 20mA signal for transmitters and positioners and is HART compatible.

With a noticeably lower power loss compared to active isolator modules, the barriers 5 V drop makes it suitable for transmitter applications with unstable power sources between 20 V DC ... 30 V DC.

Line fault detection of the field circuit is possible if the control loop in the safe area is monitored for overscale or underscale conditions of the 4 mA ... 20mA range.

The module can also be used for controlling solenoid valves and discrete outputs, such as LEDs. In this case, terminals 8- and 9+ are driven with a 24 V signal.

Informative Literature: KFD0-SCS-Ex1.55

Literature	Language	File Type	File Size
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 - 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: KFD0-SCS-Ex1.55

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	135 KB
Manuals
Manual	ENG	PDF	3685 KB

Design / Simulation: KFD0-SCS-Ex1.55

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	3048 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	942 KB

Approvals: KFD0-SCS-Ex1.55

Certificates	Certificate No.	Language	File Type	File Size
Europe PTB ATEX Category (2) G	PTB 02 ATEX 2064	ALL	PDF	6215 KB
Europe Pepperl+Fuchs Certificate of Compliance ATEX Category 3	PF 11 CERT 0902 X	ALL	PDF	179 KB
South Africa MASC	MASC S/17-0867	ALL	PDF	209 KB
exida Functional Safety Assessment	P+F 03/07-04-R013	ALL	PDF	284 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-0025E	ALL	PDF	82 KB

Associated Products: KFD0-SCS-Ex1.55

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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.