Intrinsic Safety Barriers

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SMART Transmitter Power Supply/SMART Current Driver KCD2-SCS-Ex2

2-channel isolated barrier
24 V DC supply (Power Rail)
Analog input (AI), Analog output (AO)
Operates as transmitter power supply or current driver
Housing width 12.5 mm
Up to SIL 2 (SC 3) acc. to IEC/EN 61508

Technical Data
Details
Informative Literature
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 KCD2-SCS-Ex2

General specifications
Signal type		Analog input/analog output
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Systematic capability (SC)		SC 3
Supply
Connection		Power Rail or terminals 9+, 10-
Rated voltage		19 ... 30 V DC
Ripple		max. 10 %
Rated current		max. 88 mA at 24 V
Power dissipation		max. 1.4 W
Power consumption		max. 2.1 W
Analog input
Number of channels		2
Suitable field devices		2-wire SMART transmitters
Signal		0/4 ... 20 mA , limited to approx. 30 mA
Field circuit		terminals 1+, 2-, 3+, 4-
Available voltage		min. 15 V at 20 mA min. 18 V at 4 mA
Control circuit		terminals 5-, 6+; 7-, 8+
Input voltage		Voltage across terminals 10 ... 30 V. If the current is supplied from a source > 24 V, series resistance of ≥ (V - 24)/0.02 Ω is needed, where V is the source voltage. The maximum value of the resistance is (V - 10)/0.02 Ω. (sink output)
Load		max. 350 Ω (source output)
Ripple		20 mV _eff
Analog output
Number of channels		2
Suitable field devices		SMART I/P converters (positioner), on-site-displays
Signal		0/4 ... 20 mA , limited to approx. 30 mA
Field circuit		terminals 1+, 2-, 3+, 4-
Load		max. 650 Ω
Voltage		min. 13 V at 20 mA
Ripple		20 mV _eff , on all signal terminals
Control circuit		terminals 5-, 6+; 7-, 8+
Voltage drop		max. 6 V
Line fault detection		> 100 kΩ at max. 30 V, with field wiring open
Transfer characteristics
Deviation		max. 20 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
	Influence of ambient temperature	< 2 µA/K (-40 ... 70 °C (-40 ... 158 °F))
Frequency range		field side into the control side: bandwidth with 0.5 V_pp signal 0 ... 3 kHz (-3 dB) control side into the field side: bandwidth with 0.5 V_pp signal 0 ... 3 kHz (-3 dB)
Settling time		max. 200 ms
Rise time/fall time		max. 100 ms (10 ... 90 %)
Galvanic isolation
Field circuit/control circuit		basic insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Control circuit/control circuit		functional isolation, rated voltage: 50 V
Field circuit/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Control/power supply		basic insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Indicators/settings
Display elements		LED
Factory setting		analog input with source output
Configuration		via DIP switches
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 21:2017 EN 61326-3-2:2018
Degree of protection		IEC 60529
Ambient conditions
Ambient temperature		-40 ... 70 °C (-40 ... 158 °F)
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 115 g
Dimensions		12.5 x 124 x 114 mm (0.5 x 4.9 x 4.5 inch) (W x H x D) , housing type A2
	Height	124 mm
	Width	12.5 mm
	Depth	114 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		UL 22 ATEX 2786 X
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
	Output	Ex ia, Ex iaD
	Voltage	25.2 V
	Current	100 mA
	Power	630 mW
	Internal capacitance	1.05 nF
	Internal inductance	0
Supply
	Maximum safe voltage	250 V _rms (Attention! The rated voltage can be lower.)
Input
	Maximum safe voltage	250 V _rms (Attention! The rated voltage can be lower.)
Certificate		UL 22 ATEX 2787 X
	Marking	II 3G Ex ec IIC T4 Gc [device in zone 2]
Galvanic isolation
	Field circuit/control circuit	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
	Field circuit/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 , EN 60079-11:2012 , EN IEC 60079-7:2015+A1:2018
International approvals
IECEx approval
	IECEx certificate	IECEx ULD 22.0020X
	IECEx marking	[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.

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: KCD2-SCS-Ex2

Function

This isolated barrier is used for intrinsic safety applications.

Each device channel works as a transmitter power supply or a current driver.

The device transfers data by using a current signal.

The device supports a bi-directional communication for SMART devices that use current modulation to transmit data and voltage modulation to receive data.

For current driver operation, an open field circuit presents a high impedance to the control side to allow lead breakage to be monitored by control systems.

Informative Literature: KCD2-SCS-Ex2

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: KCD2-SCS-Ex2

Safety and Security Documentation	Language	File Type	File Size
Functional Safety Manual	ENG	PDF	1985 KB
Manuals
Manual	ENG	PDF	3685 KB

Design / Simulation: KCD2-SCS-Ex2

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	3085 KB
CAE
CAE EPLAN macro EDZ / CAE EPLAN Makro EDZ	ALL	EDZ	2043 KB

Approvals: KCD2-SCS-Ex2

Certificates	Certificate No.	Language	File Type	File Size
China SITIIAS CCC Ex Certificate	2023322316005022 (Singapore)	ALL	PDF	1280 KB
DNV Marine	TAA00001WX	ALL	PDF	106 KB
Europe UL ATEX Category (1) D ATEX Category (M1) ATEX Category (1) G	UL 22 ATEX 2786X	ALL	PDF	333 KB
Europe United Kingdom UL ATEX Category 3 G	UL 22 ATEX 2787X	ALL	PDF	319 KB
United Kingdom UL UKEX Category (1) D UKEX Category (1) G UKEX Category (M1)	UL22UKEX2497X	ALL	PDF	280 KB
Worldwide TUV Rheinland Functional Safety Certificate	968_FSP_2456_00_en_el	ALL	PDF	620 KB
Worldwide UL IECEx Certificate of Conformity	IECEx ULD 22.0020X	ALL	LINK	---
Declaration of Conformity
EU Declaration of Conformity (P+F)	TDOC-6902AENG	ENG	PDF	232 KB
UK Declaration of Conformity (P+F) / UK-Konformitäterklärung (P+F)	DOC-6973	ALL	PDF	128 KB

Associated Products: KCD2-SCS-Ex2

Matching System Components

	KFD2-EB2 Power Feed Module
	Interface for Power Rail, 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

	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

Accessories

	EBP 2- 5 Insertion Bridge
	2-pin, Fully insulated, For connectors with 5.0 mm or 5.08 mm pitchpa

	KC-ST-5GN Terminal Block
	2-pin screw terminal, For KC modules of K-System, Packaging unit: 5 pieces greenpa

	KC-ST-5BU Terminal Block
	2-pin screw terminal, For KC modules of K-System, Packaging unit: 5 pieces bluepa

	KF-CP Coding Pins
	Coding of K-System terminal blocks, Coding of LB/FB-System front sockets, Packaging unit: 20 x 6 coding pinspa

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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.