Switch Amplifier KCD2-ST-Ex2

2-channel isolated barrier
24 V DC supply (Power Rail)
Dry contact or NAMUR inputs
2 active transistor outputs
Reversible mode of operation
Line fault detection (LFD)
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
Ask an Expert

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-ST-Ex2

General specifications
Signal type		Digital Input
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		≤ 10 %
Rated current		30 ... 20 mA + I_out
Power dissipation		≤ 800 mW including maximum power dissipation in the output
Input
Connection side		field side
Connection		terminals 1+, 2-; 3+, 4-
Rated values		acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage/short-circuit current		approx. 10 V DC / approx. 8 mA
Switching point/switching hysteresis		1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection		breakage I ≤ 0.1 mA , short-circuit I ≥ 6.5 mA
Pulse/Pause ratio		min. 100 µs / min. 100 µs
Output
Connection side		control side
Connection		terminals 5, 6
Rated voltage		30 V DC
Rated current		50 mA
Response time		≤ 200 µs
Signal level		1-signal: (supply voltage) - 3 V max. for 50 mA 0-signal: blocked output (off-state current ≤ 10 µA)
Output I		signal ; Transistor
Output II		signal ; Transistor
Collective error message		Power Rail
Transfer characteristics
Switching frequency		≤ 5 kHz
Galvanic isolation
Input/Output		reinforced insulation acc. to EN 50178, rated insulation voltage 300 V_eff
Input/power supply		reinforced insulation acc. to EN 50178, rated insulation voltage 300 V_eff
Output/power supply		not available , common pole terminal 9+
Output/Output		not available , common pole terminal 9+
Indicators/settings
Display elements		LEDs
Control elements		DIP switch
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 21:2011
Degree of protection		IEC 60529:2001
Protection against electrical shock		IEC 61010-1:2010
Input		EN 60947-5-6:2000
Ambient conditions
Ambient temperature		-20 ... 60 °C (-4 ... 140 °F) extended ambient temperature range up to 70 °C (158 °F), refer to manual for necessary mounting conditions
Mechanical specifications
Degree of protection		IP20
Connection		screw terminals
Mass		approx. 100 g
Dimensions		12.5 x 119 x 114 mm (0.5 x 4.7 x 4.5 inch) (W x H x D) , housing type A2
	Height	119 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		BASEEFA 13 ATEX 0080
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
	Input	Ex ia
	Voltage	10.5 V
	Current	17.1 mA
	Power	45 mW (linear characteristic)
Supply
	Maximum safe voltage	253 V AC (Attention! U_m is no rated voltage.)
Output
	Maximum safe voltage	253 V AC (Attention! The rated voltage can be lower.)
Certificate		CML 19 ATEX 4410 X
	Marking	II 3G Ex ec IIC T4 Gc
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 IEC 60079-0:2018 , EN 60079-7:2015+A1:2018 , EN 60079-11:2012
International approvals
UL approval
	Control drawing	116-0374 (cULus)
IECEx approval
	IECEx certificate	IECEx BAS 13.0046 IECEx CML 19.0147X
	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	27210121
ECLASS 12.0	27210121
ECLASS 11.0	27210121
ECLASS 10.0.1	27210121
ECLASS 9.0	27210121
ECLASS 8.0	27210121
ECLASS 5.1	27210121
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: KCD2-ST-Ex2

Function

This isolated barrier is used for intrinsic safety applications.

The device transfers digital signals (NAMUR sensors or dry contacts) from a hazardous area to a safe area.

Each input controls an active transistor output.

Via switches the mode of operation can be reversed and the line fault detection can be switched off.

A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output.

Informative Literature: KCD2-ST-Ex2

Literature	Language	File Type	File Size
Application Report - Biological Cleaning of Wastwater and Secondary Sedimentation Stage	ENG	PDF	566 KB
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 - Sand Trap and Preliminary Sedimentation Stage	ENG	PDF	448 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-ST-Ex2

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	175 KB
Functional Safety Manual	ENG	PDF	1999 KB
Manuals
Manual	ENG	PDF	3685 KB

Design / Simulation: KCD2-ST-Ex2

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	3088 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	1988 KB

Approvals: KCD2-ST-Ex2

Certificates	Cert No.	Language	File Type	File Size
Baseefa IECEx Certificate of Conformity	IECEx BAS 13.0046	ALL	LINK	---
Brasil TUV Rheinland Brazil	TÜV 15.1378	ALL	PDF	1109 KB
China SITIIAS CCC Ex Certificate	2020322316001220 (Singapore)	ALL	PDF	1048 KB
DNV Marine	TAA00001WX	ALL	PDF	106 KB
Europe Baseefa ATEX	Baseefa 13 ATEX 0080	ALL	PDF	4261 KB
Europe CML ATEX Category 3 G	CML 19ATEX4410X	ALL	PDF	145 KB
India PESO (India) CCOE Zone 2	A/P/HQ/KA/104/5813 (P487839)	ALL	PDF	80 KB
Korea KOSHA	22-AV4BO-0065	ALL	PDF	170 KB
Korea KOSHA	22-AV4BO-0066	ALL	PDF	169 KB
South Africa MASC	MASC MS/18-2756	ALL	PDF	746 KB
USA Canada UL Hazardous Location Certificate of Compliance cULus UL E106378	CoC E106378 RepRef E106378-20140430	ALL	PDF	413 KB
United Arab Emirates SGS Gulf Limited ECASEx	23-12-96810/E23-12-099958/NB0002	ALL	PDF	854 KB
Worldwide CML	IECEx CML 19.0147X	ALL	LINK	---
exida Functional Safety Assessment	P+F 1005-041-C R032 V1R0	ALL	PDF	757 KB
Control Drawings
Control drawing UL / Control drawing UL		ALL	PDF	155 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-0070H	ALL	PDF	87 KB

Associated Products: KCD2-ST-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
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	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

	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

	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

	F-NR3-Ex1 NAMUR Resistor Network
	1-channel, Dry contact input, For line fault detection (LFD)pa

	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 Asia Pte. Ltd.
P+F Building
18 Ayer Rajah Crescent
Singapore 139942
Singapore
sales@sg.pepperl-fuchs.com
phone +65 6779 9091

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.