Serviceline Industrial Sensors
Serviceline Explosion Protection

Relay Module KFD2-RSH-1.2E.L3

  • 1-channel signal conditioner
  • 24 V DC supply
  • Logic input 19 V DC ... 26.4 V DC
  • Recommended connectable voltage 50 V AC ... 230 V AC, 60 V DC ... 110 V DC
  • Relay contact output for energized to safe function
  • Line fault transparency (LFT)
  • Diagnostic function
  • Up to SIL 3 acc. to IEC 61508

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of KFD2-RSH-1.2E.L3

General specifications
Signal typeDigital Output
Functional safety related parameters
Safety Integrity Level (SIL)SIL 3
ConnectionPower Rail or terminals 14+, 15-
Rated voltage19 ... 26.4 V DC
Input current35 mA at 24 V DC , max. 44 mA at 19 V DC , with enabled internal fault detection
Power consumption< 1.7 W , includes the power consumption of the digital input , see derating curves
Connection sidecontrol side
Connectionterminals 7+, 8-
Pulse/Pause ratiomin. 150 ms / min. 150 ms with disabled internal fault detection
min. 1 s / min. 1 s with enabled internal fault detection
Test pulse lengthmax. 2 ms from DO card
Signal level0-signal: -5 ... 5 V DC
1-signal: 19 ... 26.4 V DC
Rated current0-signal: typ. 1.6 mA at 1.5 V DC; typ. 8 mA at 3 V DC (maximum leakage current DO card)
1-signal: ≥ 36 mA (minimum load current DO card)
Inrush current< 200 mA after 100 µs
Connection sidefield side
Connectionexternal voltage : terminals 5+, 2-
load : terminals 6, 3
Connectable voltage50 ... 230 V AC
60 ... 110 V DC
Power dissipation< 3.3 W at 5 A , see derating curves
Contact loading253 V AC/5 A/cos φ 0.7; 30 V DC/5 A resistive load , see derating curves
Minimum switch current10 mA
Mechanical life5 x 106 switching cycles
Line fault detectionlow voltage < 35 V AC
undercurrent: 10 mA AC; overcurrent: 5.5 A AC (relay energized)
breakage: 48 kΩ; short-circuit: 29 Ω (load, relay de-energized)
Fuse rating2.5 A (scope of delivery)
max. 5 AT, recommended maximum utilization of the fuse: 80 %
Fault indication output
Connectionterminals 10, 11
Contact loading30 V DC/ 0.5 A resistive load
Reaction time< 2 s
Mechanical life105 switching cycles
Transfer characteristics
Switching frequency< 3 Hz with disabled internal fault detection
< 0.5 Hz with enabled internal fault detection
Galvanic isolation
Input/power supplybasic insulation according to IEC/EN 61010-1, rated insulation voltage 60 Veff
Input/fault indication outputbasic insulation according to IEC/EN 61010-1, rated insulation voltage 30 Veff
Output/other circuitsreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Display elementsLEDs
Control elementsDIP-switch
Configurationvia DIP switches
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 21:2012 , EN 61326-3-2:2008 , EN 61326-3-1:2008
Degree of protectionIEC 60529:2013
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Observe the temperature range limited by derating, see section derating.
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 134 g
Dimensions20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see

Documents: KFD2-RSH-1.2E.L3

ManualsLanguageFile TypeFile Size
Functional Safety ManualENGPDF497 KB
Manual Signal Conditioners K-SystemENGPDF694 KB
Handbuch Funktionale SicherheitGERPDF502 KB
Handbuch Signaltrenner K-SystemGERPDF698 KB
Manual Signal Conditioners K-SystemRUSPDF3736 KB
Instruction manuals
ИнструкцииBULPDF134 KB
Návod k poużitíCZEPDF128 KB
Instruktions manualDANPDF128 KB
Instruction manualENGPDF133 KB
KasutusjuhendESTPDF124 KB
KäyttöohjeFINPDF124 KB
Manuel d'instructionsFRAPDF130 KB
BetriebsanleitungGERPDF134 KB
Οδηγίες χρήσηςGREPDF0 KB
HandleidingHOLPDF128 KB
Instruction manual / BetriebsanleitungHRVPDF0 KB
Használati útmutatóHUNPDF0 KB
Manuale di istruzioniITAPDF128 KB
Lietošanas pamācībaLAVPDF127 KB
Instrukciju vadovasLITPDF128 KB
Instrukcja obsługiPOLPDF0 KB
Manual de instruçõesPORPDF128 KB
Manual de utilizareRONPDF128 KB
Návod na poużitieSLKPDF128 KB
Navodila za uporaboSLVPDF126 KB
Manual de instruccionesSPAPDF128 KB
ManualSWEPDF126 KB

Approvals+Certificates: KFD2-RSH-1.2E.L3

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-3879PDF80 KB
Worldwide TUV Rheinland Functional Safety Certificate968/FSP 1538.00/17PDF678 KB
K-System Safety Relays

Triple Protection

Pepperl+Fuchs is setting a new level of reliability with newly developed safety relays. With multi-redundant switching contacts, the interface module from the tried-and-tested K-System provides reliable and safety-related activation and deactivation for applications in accordance with IEC61508 up to SIL 3.