KFD2-STC4-EX1.2O: Data Sheet

Data Sheet
KFD2-STC4-EX1.2O
Supplied by
.com
Call us on +44 (0)118 916 9420 | Email info@247able.com
SMART Transmitter Power Supply KFD2-STC4-Ex1.2O
SMART Transmitter Power Supply KFD2-STC4-Ex1.2O

Features Assembly
• 1-channel isolated barrier

• 24 V DC supply (Power Rail)
Front view
• Input 2-wire and 3-wire SMART transmitters and 2-wire Removable terminals
blue
SMART current sources
• Signal splitter (1 input and 2 outputs)
• Dual output 0/4 mA ... 20 mA
1 2 3
• Terminal blocks with test sockets 4 5 6
• Up to SIL3 acc. to IEC 61508 KFD2-STC4-Ex1.2O
Function PWR
LED green:
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. 7 8 9
10 11 12
13 14 15
It transfers the analog input signal to the safe area as two
isolated current values.
Removable terminals
Digital signals may be superimposed on the input signal in the green
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, 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
3
• BRAIN
• Foxboro
Connection
231389_eng.xml
KFD2-STC4-Ex1.2O
1+ 7-
HART
I
HART
2- 8+
Date of issue 2013-08-07
9
mA 250 Ω
3
10-
5-
HART
II
11+
HART
12
Release date 2013-08-07 15:39
mA 250 Ω
6+ 14+
15-
24 V DC
Zone 0, 1, 2 24 V DC Zone 2
Div. 1, 2 Power Rail Div. 2
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group
www.pepperl-fuchs.com
USA: +1 330 486 0002
pa-info@us.pepperl-fuchs.com
Germany: +49 621 776 2222
pa-info@de.pepperl-fuchs.com
Singapore: +65 6779 9091
pa-info@sg.pepperl-fuchs.com
1
Reading Office Aberdeen Office

Cutbush Park, Danehill, Lower Earley, Unit 6 Airside Business Park, Kirkhill Industrial Estate, Internet: www.able.co.uk
Reading, Berkshire. RG6 4UT. UK. Dyce, Aberdeen. AB21 0GT. UK. e-procurement: www.247able.com
Tel: +44 (0)118 9311188 Tel: +44 (0)1224 725999 Registered in England No: 01851002
Email: info@able.co.uk Email: ab@able.co.uk VAT No: GB 417 2481 61
1
Technical data KFD2-STC4-Ex1.2O

General specifications
Signal type Analog input
Supply
Connection Power Rail or terminals 14+, 15-
Rated voltage 20 ... 35 V DC
Ripple within the supply tolerance
Power loss 1.8 W
Power consumption 2.4 W
Input
Connection terminals 1+, 2-, 3 or 5-, 6+
Input signal 0/4 ... 20 mA
Open circuit voltage/short-circuit current terminals 1+, 3-: 22.7 V / 38 mA
Voltage drop terminals 5, 6 : ≤ 2.4 V at 20 mA
Input resistance terminals 2-, 3: ≤ 76 Ω
terminals 1+, 3: ≤ 500 Ω (250 Ω load)
Available voltage terminals 1+, 3: ≥ 16 V at 20 mA
Output
Connection terminals 7-, 8+,9; 10-, 11+,12
Load 0 ... 550 Ω
Output signal 0/4 ... 20 mA (overload > 25 mA)
Ripple ≤ 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: 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
Electrical isolation
Output/power supply functional insulation, rated insulation voltage 50 V AC
Output/Output functional insulation, rated insulation voltage 50 V AC
Directive conformity
Electromagnetic compatibility
Directive 2004/108/EC EN 61326-1:2006
Conformity
Electromagnetic compatibility NE 21:2011
Protection degree IEC 60529:2001
Protection against electrical shock UL 61010-1:2004
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Protection degree IP20
Mass approx. 200 g
Dimensions 20 x 124 x 115 mm (0.8 x 4.9 x 4.5 in) , housing type B2
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection
with Ex-areas
231389_eng.xml
EC-Type Examination Certificate BAS 99 ATEX 7060 , for additional certificates see www.pepperl-fuchs.com
Group, category, type of protection ¬ II (1)GD, [Ex ia] IIC, [Ex iaD], (-20 °C ≤ Tamb ≤ 60 °C) [circuit(s) in zone 0/1/2]
Input Ex ia IIC, Ex iaD
Supply
Maximum safe voltage Um 250 V (Attention! The rated voltage can be lower.)
Equipment terminals 1+, 3-
Voltage Uo 25.4 V
Current Io 86.8 mA
Power Po 551 mW
Equipment terminals 2-, 3
Current Io/Current Ii 74 mA / 115 mA
Release date 2013-08-07 15:39
Current Ii 115 mA
Voltage Uo 3.5 V
Current Io 74 mA
Power Po 64 mW
Equipment terminals 1+, 2 / 3-
Voltage Ui 30 V

Pepperl+Fuchs Group
USA: +1 330 486 0002
Germany: +49 621 776 2222
Singapore: +65 6779 9091
2

2

Current Ii 115 mA
Voltage Uo 25.4 V
Current Io 115 mA
Power Po 584 mW
Equipment terminals 5-, 6+
Voltage Ui 30 V
Current Ii 115 mA
Voltage Uo 8.7 V
Current Io 0 mA
Output
Maximum safe voltage Um 250 V (Attention! The rated voltage can be lower.)
EC-Type Examination Certificate DMT 01 ATEX E 133
Group, category, type of protection ¬ I (M1) [Ex ia] I
Statement of conformity TÜV 99 ATEX 1499 X , observe statement of conformity
Group, category, type of protection, ¬ II 3G Ex nA II T4 [device in zone 2]
temperature class
Electrical 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 94/9/EC EN 60079-0:2012 , EN 60079-11:2007 , EN 60079-15:2010 , EN 61241-11:2006 , EN 50303:2000
International approvals
UL approval
Control drawing 116-0173 (cULus)
IECEx approval IECEx BAS 04.0016
Approved for [Zone 0] [Ex ia] IIC, [Ex iaD], [Ex ia] I
General information
Note Both output loads must be connected to ensure complete and correct operation within the technical
specification.
Supplementary information EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of
Conformity and instructions have to be observed where applicable. For information see www.pepperl-
fuchs.com.
Configuration active output (source)
If only one output of the two outputs is used, a jumper have to be set as follows.
7-
HART
I
8+
9
250 Ω
10-
11+
231389_eng.xml
12
250 Ω
Release date 2013-08-07 15:39

Pepperl+Fuchs Group
USA: +1 330 486 0002
Germany: +49 621 776 2222
Singapore: +65 6779 9091
3

3

Accessories
Power feed module KFD2-EB2

The power feed module is used to supply the devices with 24 V DC via the Power Rail. The fuse-protected power feed module
can supply up to 150 individual devices depending on the power consumption of the devices. A galvanically isolated mechanical
contact uses the Power Rail to transmit collective error messages.
Power Rail UPR-03

The Power Rail UPR-03 is a complete unit consisting of the electrical inset and an aluminium profile rail 35 mm x 15 mm. To make
electrical contact, the devices are simply engaged.
Profile Rail K-DUCT with Power Rail

The profile rail K-DUCT is an aluminum profile rail with Power Rail insert and two integral cable ducts for system and field cables.
Due to this assembly no additional cable guides are necessary.
Power Rail and Profile Rail must not be fed via the device terminals of the individual devices!
231389_eng.xml
Release date 2013-08-07 15:39

Pepperl+Fuchs Group
USA: +1 330 486 0002
Germany: +49 621 776 2222
Singapore: +65 6779 9091
4


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Data Sheet

SMART Transmitter Power Supply KFD2-STC4-Ex1.2O

• 1-channel isolated barrier

• Up to SIL3 acc. to IEC 61508 KFD2-STC4-Ex1.2O

This isolated barrier is used for intrinsic safety applications.

The device supports the following SMART protocols:

Reading Office Aberdeen Office

Technical data KFD2-STC4-Ex1.2O

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

Reading Office Aberdeen Office

Technical data KFD2-STC4-Ex1.2O

Configuration active output (source)

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

Reading Office Aberdeen Office

Technical data KFD2-STC4-Ex1.2O

Power feed module KFD2-EB2

Power Rail UPR-03

Profile Rail K-DUCT with Power Rail

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

Reading Office Aberdeen Office

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