Conductive Switch Amplifier KFD2-ER-1.W.LB

1-channel signal conditioner
24 V DC supply (Power Rail)
Level sensing input
Adjustable range 1 kΩ ... 150 kΩ
Relay contact output
Fault relay contact output
Adjustable time delay up to 10 s
Minimum/maximum control
Line fault detection (LFD)

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-ER-1.W.LB

General specifications
Signal type		Digital Input
Supply
Connection		Power Rail or terminals 14+, 15-
Rated voltage		20 ... 30 V DC
Rated current		30 ... 40 mA
Input
Connection side		field side
Connection		terminals 1 (mass), 2 (min), 3 (max)
Control input		min./max. control system: terminals 1, 2, 3 on/off control system: terminals 1, 3
Response sensitivity		1 ... 150 kΩ , adjustable via potentiometer
Output
Connection side		control side
Connection		terminals 7, 8, 9; 10, 11, 12
Switching power		max. 192 W , 2000 VA
Output		relay
Contact loading		253 V AC/2 A/cos φ > 0.7; 40 V DC/2 A resistive load
Time constant for signal damping		0.5 s, 2 s, 5 s, 10 s
Galvanic isolation
Input/Output		basic insulation according to EN 50178, rated insulation voltage 253 V_eff
Input/power supply		basic insulation according to EN 50178, rated insulation voltage 253 V_eff
Output/power supply		basic insulation according to EN 50178, rated insulation voltage 253 V_eff
Indicators/settings
Display elements		LEDs
Control elements		DIP switch potentiometer
Configuration		via DIP switches via potentiometer
Labeling		space for labeling at the front
Directive conformity
Electromagnetic compatibility
	Directive 2004/108/EC	EN 61326-1:2006
Low voltage
	Directive 2006/95/EC	EN 50178:1997
Conformity
Insulation coordination		EN 50178:1997
Galvanic isolation		EN 50178:1997
Electromagnetic compatibility		NE 21:2006
Degree of protection		IEC 60529:2001
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 , max. 2.5 mm²
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	EC001447
ETIM 8.0	EC001447
ETIM 7.0	EC001447
ETIM 6.0	EC001447
ETIM 5.0	EC001485
UNSPSC 12.1	32101514

Details: KFD2-ER-1.W.LB

Function

This signal conditioner provides the AC measuring voltage for the level sensing electrodes.

Once the measured medium reaches the electrodes, the unit reacts by energizing a form C changeover relay contact.

The module is voltage and temperature stabilized and guarantees a defined switching characteristic.

It can be used for on/off control or minimum/maximum control. A signal delay feature is available and is adjustable between 0.5 s and 10 s.

This module can also monitor the field circuit for lead breakage (LB). LB is indicated by a red LED. This function can be deactivated with DIP switches.

Informative Literature: KFD2-ER-1.W.LB

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-ER-1.W.LB

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

Design / Simulation: KFD2-ER-1.W.LB

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	3123 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	1374 KB

Approvals: KFD2-ER-1.W.LB

Declaration of Conformity	Certificate No.	Language	File Type	File Size
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-5316	ALL	PDF	71 KB
UKCA-Declaration of conformity / UKCA-Konformitätserklärung	DOC-6702	ALL	PDF	92 KB

Associated Products: KFD2-ER-1.W.LB

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-GY Profile Rail
	Cable trunking is integrated in the mounting profile, Safe spacious separation of field and control 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-GY-UPR-03 Profile Rail
	Cable trunking with integrated Power Rail UPR-03, Safe spacious separation of field and control 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

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

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

General Notes Relating to Pepperl+Fuchs Product Information

Quick Links

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.