Pepperl+Fuchs KFD2-STC4-Ex1-Y1

SMART Transmitter Power Supply
SKU: KFD2-STC4-Ex1-Y1
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The SMART Transmitter Power Supply, Output Current Sink is an advanced solution designed for safe and efficient power management of SMART transmitters and current sources. This isolated barrier supports 24 V DC supply and features a current sink output ranging from 0/4 mA to 20 mA.

All description
Manufacturer: Pepperl+Fuchs
Description:

This product family consists of 1-channel isolated barriers that are engineered to provide reliable power to 2-wire and 3-wire SMART transmitters, as well as 2-wire SMART current sources. With a robust design, these barriers ensure safe integration into process control systems, particularly in hazardous environments where intrinsic safety is paramount.

Common applications include use in industrial automation and process control, where precise and safe measurement of parameters such as temperature, pressure, and flow is required. The output current sink allows for seamless communication with connected devices while maintaining compliance with safety standards, achieving up to SIL 2 according to IEC 61508. The inclusion of terminal blocks with test sockets facilitates easy installation and maintenance, making it an optimal choice for various industrial applications.

Equipment terminals 2-, 3
Labeling space for labeling at the front
Available voltage ≥ 16 V at 20 mA terminals 1+, 3
Ambient temperature -20 … 60 °C (-4 … 140 °F)
Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Display elements LED
Output/power supply functional insulation, rated insulation voltage 50 V AC
Connection Power Rail or terminals 14+, 15-
Dimensions 20 x 124 x 115 mm (0.8 x 4.9 x 4.5 inch) , housing type B2
EU-type examination certificate BAS 99 ATEX 7060 X
Degree of protection IEC 60529:2001
Input resistance ≤ 64 Ω terminals 2-, 3 ; ≤ 500 Ω terminals 1+, 3 (250 Ω load)
Equipment terminals 1+, 2 / 3-
Connection terminals 7+, 8-
Certificate TV 99 ATEX 1499 X
Power consumption 1.8 W
IECEx approval IECEx BAS 04.0016X
IECEx CML 15.0055X
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)
Connection screw terminals
External supply (loop) 11 … 30 V DC
Signal type Analog input
Equipment terminals 1+, 3-
Ripple within the supply tolerance
Connection terminals 1+, 2-, 3 or 5-, 6+
Connection side field side
Settling time 200 µs
Equipment terminals 5-, 6+
Ripple max. 50 µA rms
Power dissipation 1.4 W
Input signal 0/4 … 20 mA
Rise time/fall time 20 µs
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Deviation at 20 °C (68 °F), 0/4 … 20 mA
≤ 10 µA incl. calibration, linearity, hysteresis, loads and fluctuations of supply voltage
Connection side control side
Safety Integrity Level (SIL) SIL 2
Rated voltage 20 … 35 V DC
Protection against electrical shock UL 61010-1:2012
Voltage drop ≤ 2.4 V at 20 mA (terminals 5, 6)
Mass approx. 200 g
Electromagnetic compatibility NE 21:2011
Output signal 0/4 … 20 mA (overload > 25 mA)
Degree of protection IP20
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