Serviceline Information

  • 1-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • Dry contact or NAMUR inputs
  • Input frequency 1 mHz ... 5 kHz
  • 2 relay contact outputs
  • Start-up override
  • Configurable by keypad
  • Line fault detection (LFD)
  • Up to SIL2 acc. to IEC 61508

Download the complete datasheet as a PDF

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

Product Description
24 V DC
General specifications
Signal typeDigital Input
Connectionterminals 23+, 24- or power feed module/Power Rail
Rated voltage20 ... 30 V DC
Rated currentapprox. 100 mA
Power loss/power consumption≤ 1.8 W / 1.8 W
ConnectionInput I: intrinsically safe: terminals 1+, 3-
Input II: non-intrinsically safe: terminals 13+, 14-
Input Iacc. to EN 60947-5-6 (NAMUR), see system description for electrical data
Pulse duration> 50 µs
Input frequency0.001 ... 5000 Hz
Lead monitoringbreakage I ≤ 0.15 mA; short-circuit I > 6.5 mA
Input IIstartup override: 1 ... 1000 s, adjustable in steps of 1 s
Active/PassiveI > 4 mA (for min. 100 ms) / I < 1.5 mA
Open circuit voltage/short-circuit current18 V / 5 mA
Connectionoutput I: terminals 10, 11, 12
output II: terminals 16, 17, 18
Output I, IIsignal, relay
Contact loading250 V AC / 2 A / cos φ ≥ 0.7; 40 V DC / 2 A
Mechanical life5 x 107 switching cycles
Energized/De-energized delayapprox. 20 ms / approx. 20 ms
Collective error messagePower Rail
Directive conformity
Electromagnetic compatibility
Directive 2004/108/ECEN 61326-1:2006
Low voltage
Directive 2006/95/ECEN 50178:1997
Insulation coordinationIEC 62103
Electrical isolationIEC 62103
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Mass300 g
Dimensions40 x 119 x 115 mm (1.6 x 4.7 x 4.5 in) , housing type C3
Data for application in connection with Ex-areas
EC-Type Examination CertificateTÜV 99 ATEX 1408 , for additional certificates see
Group, category, type of protectionEx-Hexagon II (1)GD, I (M1) [Ex ia] IIC, [Ex iaD], [Ex ia] I (-20 °C ≤ Tamb ≤ 60 °C)
Statement of conformityTÜV 02 ATEX 1885 X , observe statement of conformity
Group, category, type of protection, temperature classEx-Hexagon II 3G Ex nA nC IIC T4
Output I, II
Contact loading50 V AC/2 A/cos φ > 0.7; 40 V DC/1 A resistive load
Directive conformity
Directive 94/9/ECEN 60079-0:2006, EN 60079-11:2007, EN 60079-15:2005, EN 60079-26:2007, EN 61241-0:2006, EN 61241-11:2006
International approvals
FM approval
Control drawing16-538FM-12

Documents: KFD2-DWB-Ex1.D

ManualsLanguageFile TypeFile Size
Manual KF**-DWB-(Ex)1.DENGPDF1113 KB
Handbuch KF**-DWB-(Ex)1.DGERPDF1123 KB
Manual KF**-DWB-(Ex)1.DPORPDF2136 KB
Handbuch KF**-DWB-(Ex)1.D/Manual KF**-DWB-(Ex)1.DRUSPDF2063 KB
Manual KF**-DWB-(Ex)1.DSPAPDF1117 KB
Instruction leaflets
Bedienkarte KF**-DWB-**1.D/Operator card KF**-DWB-**1.DALLPDF843 KB
Instructions, short instructions, safety information
System Description Isolated Barriers K-systemENGPDF760 KB
Description du Système pour Barrières Isolées de Système KFRAPDF759 KB
Systembeschreibung Trennbarrieren K-SystemGERPDF745 KB
Systembeschreibung Trennbarrieren K-System/System Description Isolated Barriers K-systemRUSPDF4107 KB


CADFile TypeFile Size
Abmessungszeichnung 2D (DXF)/Dimension drawing 2D (DXF)ZIP657 KB
ePLAN-Makros K-System-Geräte (EMA)/ePLAN macros K-System devices (EMA)ZIP17983 KB
Abmessungszeichnung 3D/Dimension drawing 3DIGS1025 KB
Abmessungszeichnung 3D/Dimension drawing 3DSTP870 KB

Approvals+Certificates: KFD2-DWB-Ex1.D

CertificatesCertificate No.File TypeFile Size
Europe TUV Nord ATEX Category 3 GTÜV 02 ATEX 1885XPDF1101 KB
Europe TUV Nord ATEX Category (1)TÜV 99 ATEX 1408PDF2397 KB
TUV Nord IECEx Certificate of ConformityIECEx TUN 03.0000LINK---
exida Functional Safety AssessmentP+F 04/03-15 R016PDF337 KB
USA FMCoC 3009603PDF114 KB
Canada FMCoC 3009603CPDF111 KB
Belarus11-1-019-2013PDF1639 KB
Control drawings
Control Drawing FM/Control Drawing FM   PDF64 KB