Serviceline Industrial Sensors
Serviceline Explosion Protection

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)

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of KFD2-WAC2-Ex1.D

Product Description
24 V DC
General specifications
Signal typeAnalog input
ConnectionPower Rail or terminals 23+, 24-
Rated voltage20 ... 35 V DC
Ripplewithin the supply tolerance
Power consumptionmax. 3 W
ConnectionPower Rail or terminals 19+, 20 GND, 21-
Programming interfaceprogramming socket
Field circuit
Connectionterminals 1+, 2-, 3+, 4-, 5+, 6-
Lead resistancemax. 25 Ω per line
Input I
Connectionterminals 1+, 2-
Sensor supply1 ... 5 V
Connectionterminals 3+, 4- (supply); 5+, 6- (signal)
Short-circuit current50 mA
Load≥ 116 Ω up to 5V, ≥ 85 Ω up to 4V
Connection sidefield side
ConnectionInput I: terminals 1+, 2-; Input II: terminals 13+, 14-; Input III: terminals 15+, 14-
Programmable Tare0 ... 500 % of span
Input ISignal, analog
Input signal-100 ... 100 mV
Input resistance> 1 MΩ for voltage measurement
Input II, IIItare adjustment, calibration and zero
Open circuit voltage/short-circuit current18 V / 5 mA
Active/PassiveI > 4 mA/I < 1.5 mA
Connection sidecontrol side
ConnectionOutput I: terminals 10, 11, 12; Output II: terminals 16, 17, 18; Output III: terminals 7-, 8+, 9-
Output I, IIRelay output
Contact loading253 V AC/2 A/500 VA/cos φ min. 0.7; 40 V DC/2 A resistive load
Mechanical life2 x 107 switching cycles
Output IIIAnalog output
Current range-20 ... 20 mA
Loadmax. 550 Ω
Analog voltage output0 ... ± 10 V; output resistance 500 Ω (bridge between terminal 7 and 9)
Analog current output0 ... ± 20 mA or 4 ... 20 mA; load 0 ... 550 Ω (terminals 7 and 8)
Line fault detectiondownscale -21.5 mA (-10.75 V) or 2 mA (1 V), upscale 21.5 mA (10.75 V)
Collective error messagePower Rail
Transfer characteristics
Resolution/accuracy≤ ± 0.05 % incl. non-linearity and hysteresis
Temperature effect ≤ ± 0.01 %/K
Reaction time300 ... 850 ms
Galvanic isolation
Input I/other circuitsreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output I, II against eachotherreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output I, II/other circuitsreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output III/Input II, IIInot available
Output III/Programming socketnot available
Other circuits from each otherfunctional insulation, rated insulation voltage 50 Veff
Display elementsLEDs , display
Control elementsControl panel
Configurationvia operating buttons
via PACTware
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Electromagnetic compatibilityNE 21:2006
Degree of protectionIEC 60529:2001
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 250 g
Dimensions40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) , housing type C3
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-Type Examination CertificateTÜV 04 ATEX 2531
MarkingEx-Hexagon II (1)G [Ex ia Ga] IIC
Ex-Hexagon II (1)D [Ex ia Da] IIIC
Ex-Hexagon I (M1) [Ex ia Ma] I
SupplyPower Rail or terminals 23+, 24- non-intrinsically safe
Maximum safe voltage40 V DC (Attention! Um is no rated voltage.)
Input Iterminals 1+, 2- Ex ia IIC, Ex iaD
Voltage Uo14 V
Current Io238 mA
Power Po833 mW (linear characteristic)
Input II and IIIterminals 13+, 14-; 15+, 14- non-intrinsically safe
Maximum safe voltage Um40 V DC (Attention! Um is no rated voltage.)
Output I, IIterminals 10, 11, 12; 16, 17, 18 non-intrinsically safe
Maximum safe voltage253 V AC / 40 V DC (Attention! Um is no rated voltage.)
Contact loading253 V AC/2 A/500 VA/cos φ min. 0.7; 40 V DC/2 A resistive load
Output IIIterminals 7-, 8+, 9- non-intrinsically safe
Maximum safe voltage Um40 V DC (Attention! Um is no rated voltage.)
InterfaceRS 485 programming jack
Maximum safe voltage40 V DC (Attention! Um is no rated voltage.)
Galvanic isolation
Input I/other circuitssafe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012
International approvals
FM approval
Control drawing116-0302 (cFMus)
UL approvalE223772
IECEx approvalIECEx TUN 06.0005
Approved for[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see

Documents: KFD2-WAC2-Ex1.D

ManualsLanguageFile TypeFile Size
Installation and configuration guide Device Type Manager (DTM)ENGPDF8665 KB
Manual Isolated Barriers K-systemENGPDF760 KB
Manual KF**-WAC2-(Ex)1.DENGPDF1799 KB
Manuel KF**-WAC2-(Ex)1.DFRAPDF2540 KB
Manuel pour Barrières Isolées de Système KFRAPDF759 KB
Handbuch KF**-WAC2-(Ex)1.DGERPDF2210 KB
Handbuch Trennbarrieren K-SystemGERPDF745 KB
Installations- und Konfigurationsanleitung Device Type Manager (DTM)GERPDF8463 KB
Manual Isolated Barriers K-systemRUSPDF4107 KB
Instruction leaflets
Operator card KF**-WAC2-**1.D / Bedienkarte KF**-WAC2-**1.DALLPDF928 KB
Instructions, short instructions, safety information
ИнструкцииBULPDF62 KB
Návod k poużitíCZEPDF57 KB
Instruktions manualDANPDF55 KB
Instruction manualENGPDF49 KB
KasutusjuhendESTPDF53 KB
KäyttöohjeFINPDF53 KB
Manuel d'instructionsFRAPDF91 KB
BetriebsanleitungGERPDF51 KB
Οδηγίες χρήσηςGREPDF65 KB
HandleidingHOLPDF67 KB
Instruction manual / BetriebsanleitungHRVPDF65 KB
Használati útmutatóHUNPDF66 KB
Manuale di istruzioniITAPDF89 KB
Lietošanas pamācībaLAVPDF65 KB
Instrukciju vadovasLITPDF65 KB
Instrukcja obsługiPOLPDF68 KB
Manual de instruçõesPORPDF68 KB
Manual de utilizareRONPDF67 KB
Návod na poużitieSLKPDF126 KB
Manual de instruccionesSPAPDF91 KB

Approvals+Certificates: KFD2-WAC2-Ex1.D

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0647CPDF123 KB
Belarus Pattern ApprovalNr. 11709PDF15640 KB
CA ULE223772 cUL (NRAQ7)LINK---
Canada FMFM 18 CA 0121XPDF290 KB
China NEPSIGYJ 14.1319PDF787 KB
EAC EAC TP TC 020/2011TC RU C-DE.MH04.B.00397PDF680 KB
Europe TUV Nord ATEX Category (1) GDTÜV 04 ATEX 2531PDF947 KB
India PESO (India) CCOEA/P/HQ/MH/104/4881 (P386481)PDF740 KB
Russia Belarus EAC Kazakhstan NANIO "CCVE"TC RU C-IT.GB05.B.00718PDF2731 KB
Russia VNIIMS Pattern ApprovalDE.C.34.004.A No.56757PDF6207 KB
South Africa MASCMASC MS/17-0878PDF329 KB
TUV Nord IECEx Certificate of ConformityIECEx TUN 06.0005LINK---
Control drawings
Control Drawing FM / Control Drawing FM   PDF38 KB

Software: KFD2-WAC2-Ex1.D

Device type managersRelease InfoFile TypeFile Size
DTM Collection Interface Technology 2 / DTM Collection Interface Technology KB
Software Tools
PACTware 4.1 SP5 / PACTware 4.1 SP54.1.0.52ZIP50675 KB
PACTware 5.0 / PACTware KB

Associated Products: KFD2-WAC2-Ex1.D

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