SMART Transmitter Power Supply KFD2-STC4-EX2

SMART Transmitter Power Supply KFD2-STC4-EX2

Mfr.: Pepperl+Fuchs Process Automation

Mfr. Part #: KFD2-STC4-EX2

0 in stock
  • $695.20
    Unit price per 

"SMART Transmitter Power Supply



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


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.


Product Description
Input 0/4 mA ... 20 mA
Output 0/4 mA ... 20 mA
General specifications
Signal type Analog input
Functional safety related parameters
Safety Integrity Level (SIL) SIL 2
Connection Power Rail or terminals 14+, 15-
Rated voltage 20 ... 35 V DC
Ripple within the supply tolerance
Power dissipation 1.8 W
Power consumption max. 2.7 W
Connection side field side
Connection terminals 1+, 3-; 4+, 6-
Input signal 0/4 ... 20 mA
Available voltage 16 V at 20 mA, terminals 1+, 3
Connection side control side
Connection terminals 7-, 8+; 10-, 11+
Load 0 ... 550 Ω at 20 mA
Output signal 0/4 ... 20 mA (overload > 25 mA)
Ripple max. 50 µA rms
Transfer characteristics
Deviation at 20 °C (68 °F), 0/4 ... 20 mA
≤ 10 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
Influence of ambient temperature 0.25 µA/K
Frequency range field side into the control side: band width with 1 Vpp signal 0 ... 7.5 kHz (-3 dB)
safe area to hazardous area: band width with 1 VSS signal 0.3 ... 7.5 kHz (-3 dB)
Settling time 200 µs
Rise time/fall time 20 µs
Galvanic isolation
Output/power supply functional insulation, rated insulation voltage 50 V AC
Output/Output functional insulation, rated insulation voltage 50 V AC
Display elements LED
Labeling space for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EU EN 61326-1:2013 (industrial locations)
Electromagnetic compatibility NE 21:2011
Degree of protection IEC 60529:2001
Protection against electrical shock UL 61010-1:2012
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Degree of protection IP20
Connection screw terminals
Mass approx. 150 g
Dimensions 20 x 124 x 115 mm (0.8 x 4.9 x 4.5 inch) , housing type B2
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate BAS 99 ATEX 7025 X
Marking Ex-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
Input [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Voltage 25.2 V
Current 93 mA
Power 0.586 W
Maximum safe voltage 250 V (Attention! The rated voltage can be lower.)
Certificate TÜV 99 ATEX 1499 X
Marking Ex-Hexagon II 3G Ex nA II T4 [device in zone 2]
Galvanic isolation
Input/Output safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supply 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 , EN 60079-15:2010
International approvals
UL approval
Control drawing 116-0428 (cULus)
IECEx approval IECEx BAS 04.0015X
Approved for [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Ex nA IIC T4 Gc
General information
Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see -

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