Strain Gauge Converter KFD2-WAC2-Ex1.D

1-channel isolated barrier
24 V DC supply (Power Rail)
Strain gauge input (full or half bridge)
Output 0 mA ... ± 20 mA or 0 V ... ± 10 V
2 relay contact outputs
Programmable high/low alarm
Configurable by PACTware or keypad
RS-485 interface
Line fault detection (LFD)

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Datasheet
Details
Informative Literature
Product Documentation
Design / Simulation
Approvals
Software
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-WAC2-Ex1.D

General specifications
Signal type		Analog input
Supply
Connection		Power Rail or terminals 23+, 24-
Rated voltage		20 ... 35 V DC
Ripple		within the supply tolerance
Power consumption		max. 3 W
Interface
Connection		Power Rail or terminals 19+, 20 GND, 21-
Type		RS-485
Programming interface		programming socket
Field circuit
Connection		terminals 1+, 2-, 3+, 4-, 5+, 6-
Lead resistance		max. 25 Ω per line
Input I
	Connection	terminals 1+, 2-
Sensor supply		1 ... 5 V
	Connection	terminals 3+, 4- (supply); 5+, 6- (signal)
	Short-circuit current	50 mA
	Load	≥ 116 Ω up to 5V, ≥ 85 Ω up to 4V
Input
Connection side		field side
Connection		Input I: terminals 1+, 2-; Input II: terminals 13+, 14-; Input III: terminals 15+, 14-
Programmable Tare		0 ... 500 % of span
Input I		Signal, analog
	Input signal	-100 ... 100 mV
	Input resistance	> 1 MΩ for voltage measurement
Input II, III		tare adjustment, calibration and zero
	Open circuit voltage/short-circuit current	18 V / 5 mA
	Active/Passive	I > 4 mA/I < 1.5 mA
Output
Connection side		control side
Connection		Output I: terminals 10, 11, 12; Output II: terminals 16, 17, 18; Output III: terminals 7-, 8+, 9-
Output I, II		Relay output
	Contact loading	253 V AC/2 A/500 VA/cos φ min. 0.7; 40 V DC/2 A resistive load
	Mechanical life	2 x 10⁷ switching cycles
Output III		Analog output
	Current range	-20 ... 20 mA
	Load	max. 550 Ω
	Analog voltage output	0 ... ± 10 V; output resistance 500 Ω (bridge between terminal 7 and 9)
	Analog current output	0 ... ± 20 mA or 4 ... 20 mA; load 0 ... 550 Ω (terminals 7 and 8)
Line fault detection		downscale -21.5 mA (-10.75 V) or 2 mA (1 V), upscale 21.5 mA (10.75 V)
Collective error message		Power Rail
Transfer characteristics
Deviation
	Resolution/accuracy	≤ ± 0.05 % incl. non-linearity and hysteresis
	Temperature effect	≤ ± 0.01 %/K
Reaction time		300 ... 850 ms
Galvanic isolation
Input I/other circuits		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output I, II against eachother		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output I, II/other circuits		reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V_eff
Output III/Input II, III		not available
Output III/Programming socket		not available
Other circuits from each other		functional insulation, rated insulation voltage 50 V_eff
Indicators/settings
Display elements		LEDs , display
Control elements		Control panel
Configuration		via operating buttons via PACTware
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. 250 g
Dimensions		40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) (W x H x D) , housing type C2
	Height	119 mm
	Width	40 mm
	Depth	115 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		TÜV 04 ATEX 2531
	Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
Supply		Power Rail or terminals 23+, 24- non-intrinsically safe
	Maximum safe voltage	40 V DC (Attention! U_m is no rated voltage.)
Input I		terminals 1+, 2- Ex ia IIC, Ex iaD
	Voltage U_o	14 V
	Current I_o	238 mA
	Power P_o	833 mW (linear characteristic)
Input II and III		terminals 13+, 14-; 15+, 14- non-intrinsically safe
	Maximum safe voltage U_m	40 V DC (Attention! U_m is no rated voltage.)
Output I, II		terminals 10, 11, 12; 16, 17, 18 non-intrinsically safe
	Maximum safe voltage	253 V AC / 40 V DC (Attention! U_m is no rated voltage.)
	Contact loading	253 V AC/2 A/500 VA/cos φ min. 0.7; 40 V DC/2 A resistive load
Output III		terminals 7-, 8+, 9- non-intrinsically safe
	Maximum safe voltage U_m	40 V DC (Attention! U_m is no rated voltage.)
Interface		RS 485 programming jack
	Maximum safe voltage	40 V DC (Attention! U_m is no rated voltage.)
Galvanic isolation
	Input I/other circuits	safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2012+A11:2013 , EN 60079-11:2012
International approvals
FM approval
	Control drawing	116-0302 (cFMus)
UL approval		E223772
IECEx approval
	IECEx certificate	IECEx TUN 06.0005
	IECEx marking	[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I
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	27210125
ECLASS 12.0	27210125
ECLASS 11.0	27210125
ECLASS 10.0.1	27210125
ECLASS 9.0	27210125
ECLASS 8.0	27210125
ECLASS 5.1	27210107
ETIM 9.0	EC002477
ETIM 8.0	EC002477
ETIM 7.0	EC002477
ETIM 6.0	EC002477
ETIM 5.0	EC001485
UNSPSC 12.1	32101514

Details: KFD2-WAC2-Ex1.D

Function

This isolated barrier is used for intrinsic safety applications.

The device is used with strain gauges, load cells and resistance measuring bridges.

Designed to provide 5 V excitation voltage, this barrier’s high quality A/D converter allows it to be used with those devices requiring 10 V.

Up to four 350 Ω strain gauges connected in parallel may be powered and evaluated.

The device is easily configured by the use of keypad or with the PACTware configuration software.

The current measurement for tare, zero point, and final value can be entered in this manner.

A fault is signalized by LEDs and a separate collective error message output.

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

Informative Literature: KFD2-WAC2-Ex1.D

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: KFD2-WAC2-Ex1.D

Brief Instructions	Language	File Type	File Size
Operator card KF-WAC2-1.D / Bedienkarte KF-WAC2-1.D	ALL	PDF	928 KB
Safety and Security Documentation
Instruction manual	ENG	PDF	172 KB
Manuals
Manual KF**-WAC2-(Ex)1.D	ENG	PDF	1799 KB
Manual	ENG	PDF	3685 KB
Installation and configuration guide Device Type Manager (DTM)	ENG	PDF	8665 KB

Design / Simulation: KFD2-WAC2-Ex1.D

CAD	Language	File Type	File Size
CAD 3-D / CAD 3-D	ALL	STP	2722 KB
CAD Portal / CAD Portal	ALL	LINK	---
CAE
CAE EPLAN Data Portal / CAE EPLAN Data Portal	ALL	LINK	---
EPLAN macro EDZ / EPLAN Makro EDZ	ALL	EDZ	68 KB

Approvals: KFD2-WAC2-Ex1.D

Certificates	Certificate No.	Language	File Type	File Size
Australia Test Safe	ANZEx 22.3012	ALL	PDF	199 KB
Canada FM	FM 18 CA 0121X	ALL	PDF	290 KB
China SITIIAS CCC Ex Certificate	2021322316004119 (Singapore)	ALL	PDF	1086 KB
Europe TUV Nord ATEX Category (1) D ATEX Category (M1) ATEX Category (1) G	TÜV 04 ATEX 2531	ALL	PDF	384 KB
Korea KOSHA	19-AV4BO-0392	ALL	PDF	120 KB
South Africa MASC	MASC MS/17-0878	ALL	PDF	721 KB
USA Canada UL cULus Hazardous Location UL E223772 UL	CoC 20200622 - E223772 RepRef 20071210	ALL	PDF	82 KB
USA FM	FM 18 US 0254X	ALL	PDF	290 KB
United Kingdom CML UK-Type Examination Certificate UKEX Category (1) D UKEX Category (1) G UKEX Category (M1)	CML 22UKEX2504	ALL	PDF	138 KB
Worldwide TUV Nord IECEx Certificate of Conformity	IECEx TUN 06.0005	ALL	LINK	---
Control Drawings
Control drawing FM / Control drawing FM		ALL	PDF	38 KB
Declaration of Conformity
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)	DOC-0647D	ALL	PDF	54 KB

Software: KFD2-WAC2-Ex1.D

Device Description Files/Drivers	Release Info	File Type	File Size
DTM Collection Interface Technology 2 / DTM Collection Interface Technology 2	1.4.110.77	ZIP	---
Software Tools
PACTware 4.1 SP6 / PACTware 4.1 SP6	4.1.0.53	ZIP	43327 KB
PACTware 5.0 / PACTware 5.0	5.0.5.31	ZIP	44203 KB
PACTware 6.X / PACTware 6.X	6.1	ZIP	335938 KB

Associated Products: KFD2-WAC2-Ex1.D

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Pepperl+Fuchs Inc.
1600 Enterprise Parkway
Twinsburg, OH 44087
USA
- responsible for Canada -
sales@us.pepperl-fuchs.com
phone +1 330 425-3555

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.