Switch Amplifier KFD2-SR2-2.2S

2-channel signal conditioner
24 V DC supply (Power Rail)
Dry contact or NAMUR inputs
Usable as signal splitter (1 input and 2 outputs)
2 x 2 relay contact outputs with AND logic
Line fault detection (LFD)
Reversible mode of operation
Up to SIL 2 acc. to IEC/EN 61508 / IEC/EN 61511

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 KFD2-SR2-2.2S

General specifications
Signal type		Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		20 ... 30 V DC
Ripple		≤ 10 %
Rated current		≤ 50 mA
Power dissipation		1 W
Power consumption		< 1.3 W
Input
Connection side		field side
Connection		terminals 1+, 2+, 3-; 4+, 5+, 6-
Rated values		acc. to EN 60947-5-6 (NAMUR)
Open circuit voltage/short-circuit current		approx. 8 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 mA
Pulse/Pause ratio		min. 20 ms / min. 20 ms
Output
Connection side		control side
Connection		output I: terminals 7, 8 ; output II: terminals 8, 9 ; output III: terminals 10, 11 ; output IV: terminals 11, 12
Output I, II, III, IV		channel 1, 2; relay
Contact loading		50 V AC/1 A/cos φ > 0.7; 40 V DC/1 A resistive load
Minimum switch current		1 mA / 24 V DC
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		10⁸ switching cycles
Collective error message		Power Rail
Transfer characteristics
Switching frequency		≤ 10 Hz
Galvanic isolation
Input/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Input/power supply		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/power supply		basic insulation according to IEC/EN 61010-1, rated insulation voltage 32 V_eff , functional insulation, rated insulation voltage 50 V_eff
Input/input		not available
Output/Output		basic insulation according to IEC/EN 61010-1, rated insulation voltage 32 V_eff , functional insulation, rated insulation voltage 50 V_eff
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)
Low voltage
	Directive 2014/35/EU	EN 61010-1:2010
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 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
	Height	119 mm
	Width	20 mm
	Depth	115 mm
Mounting		on 35 mm DIN mounting rail acc. to EN 60715:2001
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: KFD2-SR2-2.2S

Function

This signal conditioner transfers digital signals (NAMUR sensors/mechanical contacts).

Each sensor or switch controls two form A normally open relay contacts. The normal output state can be reversed using switches S1 and S2. Switch S3 is used to enable or disable line fault detection of the field circuit.

During an error condition, the relays revert to their de-energized state and the LEDs indicate the fault according to NAMUR NE44.

A unique collective error messaging feature is available when used with the Power Rail system.

Informative Literature: KFD2-SR2-2.2S

Literature	Language	File Type	File Size
Application Report - Biological Cleaning of Wastwater and Secondary Sedimentation Stage	ENG	PDF	566 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

Product Documentation: KFD2-SR2-2.2S

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	41 KB
Safety Manual	ENG	PDF	450 KB
Manuals
System Manual	ENG	PDF	3694 KB

Design / Simulation: KFD2-SR2-2.2S

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	2510 KB
CAD Portal / CAD Portal	ALL	LINK	---
CAE
EPLAN macro EDZ / EPLAN Makro EDZ	ALL	EDZ	64 KB

Approvals: KFD2-SR2-2.2S

Certificates	Certificate No.	Language	File Type	File Size
exida Functional Safety Assessment	P+F 02/4-12 R007	ALL	PDF	370 KB

Associated Products: KFD2-SR2-2.2S

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Pepperl+Fuchs (Pty) Ltd
8 Glen Eagle Office Park
Koorsboom Ave, Glen Marais, Kempton Park
1619 Johannesburg
South Africa
info@za.pepperl-fuchs.com
phone +27 87985 0797

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.