Intrinsic Safety Barriers

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SMART Transmitter Power Supply KFD2-STC3-Ex1

1-channel isolated barrier
24 V DC supply (Power Rail)
2-wire SMART transmitter
Output 4 mA ... 20 mA
SMART capable up to 40 kHz (-1dB)
Suitable for Honeywell DE protocol
Terminals with test points

Technical Data
Details
Product Documentation
Design / Simulation
Approvals
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-STC3-Ex1

Product Description
Output 4 ... 20 mA

General specifications
Signal type		Analog input
Supply
Connection		Power Rail or terminals 7+, 8-
Rated voltage		20 ... 35 V DC
Ripple		within the supply tolerance
Power dissipation		≤ 1.6 W
Power consumption		≤ 2 W
Interface
Protocol		Honeywell DE
Input
Connection side		field side
Connection		terminals 1+, 3-
Input signal		4 ... 20 mA
Available voltage		approx. 17 V at 4 ... 20 mA
Output
Connection side		control side
Connection		terminals 9+, 10-, 11+
Output signal		4 ... 20 mA , max. load 1000 Ω , for HART ≥ 230 Ω, Honeywell DE 230 ... 280 Ω (transmitter and communicator dependent)
Ripple		≤ 0.05 % of output signal range
Transfer characteristics
Deviation		≤ 0.05 % of output signal range (current output), ≤ 10 µA at 20 °C (68 °F)
	Influence of ambient temperature	≤ 20 ppm/K
Frequency range		field side into the control side: bandwidth with 1 mA_pp signal 0 ... 40 kHz (-1 dB); 0 ... 50 kHz (-6 dB) safe area to hazardous area: bandwidth with 250 mV_pp signal 2 Hz ... 40 kHz (-1 dB); 1 Hz ... 50 kHz (-6 dB)
Rise time		10 µs
Galvanic isolation
Output/power supply		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 21:2006
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. 150 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 01 ATEX 7369
	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
	Voltage	25.2 V DC
	Current	93 mA
	Power	587 mW
Supply
	Maximum safe voltage	250 V (Attention! The rated voltage can be lower.)
Certificate		BASEEFA 09 ATEX 0218X
	Marking	II 3G Ex nA II T4 Gc [device in zone 2]
Galvanic isolation
	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 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
UL approval
	Control drawing	116-0173 (cULus)
IECEx approval
	IECEx certificate	IECEx BAS 06.0088 IECEx BAS 09.0102X
	IECEx marking	[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I Ex nA 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)

Classifications

System	Classcode
ECLASS 13.0	27210119
ECLASS 12.0	27210119
ECLASS 11.0	27210119
ECLASS 10.0.1	27210119
ECLASS 9.0	27210119
ECLASS 8.0	27210119
ECLASS 5.1	27210119
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-STC3-Ex1

Function

This isolated barrier is used for intrinsic safety applications. It provides a 2-wire SMART transmitter with power in a hazardous area and transfers the analog signal to the safe area as an isolated current source.

Digital signals up to 40 kHz may be superimposed on the analog values in the hazardous or safe area and are transferred bi-directionally.

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

Product Documentation: KFD2-STC3-Ex1

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

Design / Simulation: KFD2-STC3-Ex1

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

Approvals: KFD2-STC3-Ex1

Certificates	Certificate No.	Language	File Type	File Size
Baseefa IECEx Certificate of Conformity	IECEx BAS 06.0088	ALL	LINK	---
Baseefa IECEx Certificate of Conformity	IECEx BAS 09.0102X	ALL	LINK	---
Canada UL cUL	E106378 cUL (QUZW7)	ALL	LINK	---
Europe Baseefa ATEX Category 3 G	Baseefa 09 ATEX 0218X	ALL	PDF	1952 KB
Europe Baseefa Group I (M1) ATEX Category (1) GD	BAS 01 ATEX 7369	ALL	PDF	2968 KB
India PESO (India) CCOE	A/P/HQ/KA/104/5865 (P506128)	ALL	PDF	101 KB
USA Canada UL Hazardous Location Certificate of Compliance cULus UL E106378	CoC 20140902 - E106378 RepRef 20011030	ALL	PDF	429 KB
USA UL	E106378 UL (QUZW)	ALL	LINK	---
Control Drawings
Control drawing UL / Control drawing UL		ALL	PDF	1092 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-0365G	ALL	PDF	82 KB

Associated Products: KFD2-STC3-Ex1

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

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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.