Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply

description:Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply...
Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply


Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply
•  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 61508
Function of Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply
This isolated barrier is used for intrinsic safety applications.
The device supplies 2-wire and 3-wire SMART transmitters in a hazardous area, and can also be used with 2-wire SMART current sources.
It transfers the analog input signal to the safe area as an isolated current value.
Digital signals may be superimposed on the input signal in the hazardous or safe area and are transferred bi-directionally.
If the HART communication resistance in the loop is too low,the internal resistance of 250 Ω between terminals 8 and 9 can be used.
Test sockets for the connection of HART communicators are integrated into the terminals of the device.
Application of Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply
The device supports the following SMART protocols:
• Foxboro
Pepperl+Fuchs KFD2-STC4-EX1 SMART Transmitter Power Supply

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 1.4 W
Power consumption 1.8 W
Connection side field side
Connection terminals 1+, 2-, 3 or 5-, 6+
Input signal 0/4 ... 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 side control side
Connection terminals 7-, 8+, 9
Load 0 ... 800 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
Frequency range field 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 time 200 µs
Rise time/fall time 20 µs
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
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection IP20
Connection screw terminals
Mass approx. 200 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 7060 X
Marking  II (1)G [Ex ia Ga] IIC ,  II (1)D [Ex ia Da] IIIC ,  I (M1) [Ex ia Ma] I
Certificate TÜV 99 ATEX 1499 X
Marking  II 3G Ex nA II T4 [device in zone 2]
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 04.0016X 
IECEx CML 15.0055X
Approved for [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Ex nA IIC T4 Gc

We are specialized in intelligent instruments, including : control system, transmitters, flow meters,sensors, recorders, analyzers, control valves, controllers, PLC's, etc.
We mainly supply Yokogawa ,Honeywell,Siemens,ABB,FLUKE,Endress+Hauser,Schneider Electric,Moeller,FUJI,Omron,Pepperl+Fuchs,Hima,Yaskawa, Norgren, Hach, Weidmuller ,Phoenix,MTL,Testo etc.
Why choose us?
1. 100% original product, 100% quality assurance.
If you find a fake. Please contact us without hesitation! We afford the shipment cost! We send you a new product asking zero cent!
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It will take 3 to 7days to reach in your hands.
Imported with original packaging or standard export packing.Customize design is acceptable.
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