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KFD2-STC4-Ex1 SMART Transmitter Power Supply

Key Benefits at a Glance

  • 1-channel isolated barrier
  • 24 V DC supply (Power Rail)
  • Input 2-wire and 3-wire SMART transmitters and 2-wire SMART current sources
  • Output 0/4 mA ... 20 mA
  • Terminals with test points
  • Up to SIL 2 acc. to IEC/EN 61508

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Please contact us for exact delivery estimation.
Product photo: SMART Transmitter Power Supply KFD2-STC4-Ex1
Product photo: SMART Transmitter Power Supply KFD2-STC4-Ex1
Approval
Product Compliance: Europe – CE
Functional Safety: Safety Integrity Level - 2
Product Compliance: USA - cULus
Approval
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.

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DatasheetFunctionClassificationInformative LiteratureProduct DocumentationDesign / SimulationApprovalsRelated Products

Technical data of KFD2-STC4-Ex1

Signal typeAnalog input
Safety Integrity Level (SIL)SIL 2
ConnectionPower Rail or terminals 14+, 15-
Rated voltageUr20 ... 35 V DC
Ripplewithin the supply tolerance
Power dissipation1.4 W
Power consumption1.8 W
Connection sidefield side
Connectionterminals 1+, 2-, 3 or 5-, 6+
Input signal0/4 ... 20 mA
Voltage drop≤ 2.4 V at 20 mA (terminals 5, 6)
Input resistance≤ 64 Ω terminals 2-, 3 ; ≤ 500 Ω terminals 1+, 3 (250 Ω load)
Available voltage≥ 16 V at 20 mA terminals 1+, 3
Connection sidecontrol side
Connectionterminals 7-, 8+, 9
Load0 ... 800 Ω at 20 mA
Output signal0/4 ... 20 mA (overload > 25 mA)
Ripplemax. 50 µA rms
Deviationat 20 °C (68 °F), 0/4 ... 20 mA
≤ 10 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
Influence of ambient temperature0.25 µA/K
Frequency rangefield side into the control side: bandwidth with 0.5 Vpp signal 0 ... 7.5 kHz (-3 dB)
control side into the field side: bandwidth with 0.5 Vpp signal 0.3 ... 7.5 kHz (-3 dB)
Settling time200 µs
Rise time/fall time20 µs
Output/power supplyfunctional insulation, rated insulation voltage 50 V AC
Display elementsLED
Labelingspace for labeling at the front
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Electromagnetic compatibilityNE 21:2011
Degree of protectionIEC 60529:2001
Protection against electrical shockUL 61010-1:2012
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Degree of protectionIP20
Connectionscrew terminals
Massapprox. 200 g
Dimensions20 x 124 x 115 mm (0.8 x 4.9 x 4.5 inch) , (W x H x D) housing type B2
Height124 mm
Width20 mm
Depth115 mm
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
EU-type examination certificateBAS 99 ATEX 7060 X
MarkingEx-Hexagon II (1)G [Ex ia Ga] IIC , [exsign] II (1)D [Ex ia Da] IIIC , [exsign] I (M1) [Ex ia Ma] I
Input[Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Supply
Maximum safe voltageUm250 V (Attention! The rated voltage can be lower.)
Equipmentterminals 1+, 3-
VoltageUo25.4 V
CurrentIo86.8 mA
PowerPo551 mW
Internal capacitanceCi12 nF
Internal inductanceLi0 mH
Equipmentterminals 2-, 3
CurrentIo/Strom Ii74 mA / 115 mA
CurrentIi115 mA
VoltageUo3.5 V
CurrentIo74 mA
PowerPo64 mW
Equipmentterminals 1+, 2 / 3-
VoltageUi30 V
CurrentIi115 mA
VoltageUo25.4 V
CurrentIo115 mA
PowerPo584 mW
Equipmentterminals 5-, 6+
VoltageUi30 V
CurrentIi115 mA
VoltageUo8.7 V
CurrentIo0 mA
Output
Maximum safe voltageUm250 V (Attention! The rated voltage can be lower.)
CertificateTÜV 99 ATEX 1499 X
MarkingEx-Hexagon II 3G Ex nA II T4 [device in zone 2]
Galvanic isolation
Input/Outputsafe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supplysafe 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 , EN 60079-15:2010
UL approval
Control drawing116-0428 (cULus)
IECEx approval
IECEx certificateIECEx BAS 04.0016X
IECEx CML 15.0055X
IECEx marking[Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I
Ex nA IIC T4 Gc
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
General Notes

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