SMART Transmitter Power Supply

SMART Transmitter Power Supply KFD2-STC4-Ex2-Y1

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SMART Transmitter Power Supply, Output Current Sink

KFD2-STC4-Ex2-Y1

♦ 2-channel isolated barrier.

♦ 24 V DC supply (Power Rail).

♦ Input 2-wire SMART transmitters.

♦ Output 0/4 mA … 20 mA current sink.

♦ Terminal blocks with test sockets.

♦ Up to SIL 2 acc. to IEC/EN 61508.

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Description

PEPPERL+FUCHS SMART Transmitter Power Supply

Output Current Sink KFD2-STC4-Ex2-Y1

Function:-

  • This isolated barrier is used for intrinsic safety applications.
  • The device supplies 2-wire SMART transmitters in a hazardous area.
  • 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.
  • It is designed to provide a sink mode output on the safe area terminals. If the HART communication resistance in the loop is too low, the internal resistance of 250 Ω between terminals 8, 9 and 11, 12 can be used.
  • Test sockets for the connection of HART communicators are integrated into the terminals of the device.

Application:-

The device supports the following SMART protocols:

  • HART.
  • BRAIN.
  • Foxboro.

Technical Data:-

Connection Power Rail or terminals 14+, 15
Rated voltage                                         Ur 20 … 35 V DC Ripple within the supply tolerate
Ripple Within the supply tolerance
Power dissipation 1.9 W
Power consumption max. 2.8 W
Input
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
Output
Connection side control side
Connection terminals 7+, 8-; 10+, 11
Output signal 0/4 … 20 mA (overload > 25 mA)
Ripple max. 50 µA rms
External supply (loop) 11 … 30 V DC
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 Frequency range field side into the control side: bandwidth with 1 Vpp signal 0 … 7.5 kHz (-3 dB) safe area to hazardous area: bandwidth 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
Indicators/settings
Display elements LED
Labeling space for labeling at the front
Directive conformity
Electromagnetic compatibility

Directive 2014/30/

  

EU EN 61326-1:2013 (industrial locations)
Conformity
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)
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) , (W x H x D) 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 1 II (1)G [Ex ia Ga] IIC , 1 II (1)D [Ex ia Da] IIIC , 1 I (M1) [Ex ia Ma] I
Input [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Voltage Uo 25.2 V
Current Io 93 mA
Power Po 0.586 W
Supply
Maximum safe voltage Um 250 V (Attention! The rated voltage can be lower)