Standstill and Rotational Direction Monitor KFD2-SR2-2.W.SM

2-channel signal conditioner
24 V DC supply
PNP/push-pull, dry contacts or NAMUR inputs
Selectable frequency trip values
2 relay contact outputs
Start-up override
Selectable mode of operation
Without line fault detection
Up to SIL 2 acc. to IEC/EN 61508

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 KFD2-SR2-2.W.SM

General specifications
Signal type		Digital Input
Programming		via DIP switch and programmable
Functional safety related parameters
Safety Integrity Level (SIL)		SIL 2
Supply
Connection		terminals 14+, 15-
Rated voltage		20 ... 30 V DC
Power consumption		max. 1.5 W
Input
Connection side		field side
Connection		Input I: terminals 1+, 2+, 3- ; Input II: terminals 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		not available
Control input		sensor power supply approx. 8.2 V, impedance 1.2 kΩ
Pulse duration		> 200 µs for standstill monitoring, > 250 µs for rotation direction detecion
Output
Connection side		control side
Connection		output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
Contact loading		253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load
Minimum switch current		2 mA / 24 V DC
Energized/De-energized delay		approx. 20 ms / approx. 20 ms
Mechanical life		10⁷ switching cycles
Trip value		for standstill monitoring: 0.1 Hz; 0.5 Hz; 2 Hz; 10 Hz adjustable via DIP switch (S1 and S2)
Transfer characteristics
Accuracy		5 % (S3 = I), 30 % (S3 = II)
Start-up override		5 seconds or 20 seconds, programmable
Frequency range		≤ 2 kHz
Rotation direction detection		90° phase difference between pulse input signal 1 and 2, overlapping ≥ 125 µs
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		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output/Output		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 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
Input		EN 60947-5-6:2000
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	27210128
ECLASS 12.0	27210128
ECLASS 11.0	27210128
ECLASS 10.0.1	27210128
ECLASS 9.0	27210128
ECLASS 8.0	27210190
ECLASS 5.1	27210121
ETIM 9.0	EC002918
ETIM 8.0	EC002918
ETIM 7.0	EC002918
ETIM 6.0	EC002918
ETIM 5.0	EC002475
UNSPSC 12.1	39121007

Details: KFD2-SR2-2.W.SM

Function

This signal conditioner provides the galvanic isolation between field circuits and control circuits.

This device is a standstill monitor that accepts input frequency pulses and triggers an output when the frequency drops below a preselected limit value.

Two start-up override values are available. This unit can also be used to determine rotation direction.

During an error condition or a power loss, the relay reverts to its de-energized state and the LEDs indicate the fault according to NAMUR NE 44. A line fault is not indicated.

The device has LED status indicators for direction of rotation detection, limit detection, supply, and hardware faults.

The device is easily configured by the use of DIP switches.

For additional information, refer to www.pepperl-fuchs.com.

Informative Literature: KFD2-SR2-2.W.SM

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 - Interface Technology - K-System keeps thermal power stations running	ENG	PDF	562 KB
Application Report - K-System Keeps Thermal Power Stations Running	ENG	PDF	557 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.W.SM

Safety and Security Documentation	Language	File Type	File Size
Instruction manual	ENG	PDF	41 KB
Safety instructions standstill controller KFD2-SR2-**-2.W.SM	ENG	PDF	108 KB
Manuals
System Manual	ENG	PDF	3694 KB

Design / Simulation: KFD2-SR2-2.W.SM

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.W.SM

Certificates	Certificate No.	Language	File Type	File Size
exida Functional Safety Assessment	P+F 04/03-14 R017	ALL	PDF	148 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-3165B	ALL	PDF	115 KB

Associated Products: KFD2-SR2-2.W.SM

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Pepperl+Fuchs (India) Pvt. Ltd.
Ground Floor, #546/1, Sy. No. 46, 7th Main
4th Phase, Peenya Industrial Estate
Bangalore - 560058
India
info@in.pepperl-fuchs.com
phone +91 80 4609 6000

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.