Pepperl Fuchs KFD2-ST2-Ex1.LB Technical Data

Switch Amplifier

2

KFD2-ST2-Ex1-LB

Zone 2

Div. 2

Zone 0, 1, 2
Div. 1, 2

24 V DC

14+
15-

Power Rail

24 V DCERR

2+

3-

1+

7+

9+

I

II

10 kΩ

400 Ω ≤ R ≤ 2 kΩ

10 kΩ

Germany: [phone]Pepperl+Fuchs Group

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

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

KFD2-ST2-Ex1.LB

1-channel isolated barrier

<

24 V DC supply (Power Rail)

<

Dry contact or NAMUR inputs

<

Active transistor output

<

Active fault output

<

Line fault detection (LFD)

<

Reversible mode of operation

<

Up to SIL 2 acc. to IEC 61508

<

24 V DC

Function

This isolated barrier is used for intrinsic safety applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous
area to a safe area.
The proximity sensor or switch controls an active transistor output per channel for the safe area load. The normal output state is reversed using
switch S1. Switch S2 allows output II to be switched between a signal output and an error message output. Switch S3 enables or disables line fault
detection of the field circuit.
During an error condition, the transistors revert to their de-energized state and LEDs indicate the fault according to NAMUR NE44.
A unique collective error messaging feature is available when used with the Power Rail system.

Connection

Technical Data

General specifications

Signal type Digital Input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Supply

Connection Power Rail or terminals 14+, 15­Rated voltage U
Ripple ≤ 10 %
Rated current I

Input

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 180997_eng.pdf

r

r

20 ... 30 V DC

≤ 50 mA

1

Switch Amplifier KFD2-ST2-Ex1.LB

Germany: [phone]Pepperl+Fuchs Group

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

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Technical Data

Connection side field side
Connection terminals 1+, 2+, 3­Rated values acc. to EN 60947-5-6 (NAMUR), see system description for electrical data
Open circuit voltage/short-circuit current approx. 8 V DC / approx. 8 mA
Switching point/switching hysteresis 1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection breakage I ≤ 0.1 mA , short-circuit I > 6 mA

Output

Connection side control side
Connection output I: terminals 7+ ; output II: terminals 9+
Signal level 1-signal: (L+) - 3.5 V (100 mA, short-circuit protected)

Output I signal , electronic output, active
Output II signal or error message , electronic output, active
Collective error message Power Rail

Transfer characteristics

Switching frequency ≤ 5 kHz

Galvanic isolation

Input/Output reinforced insulation acc. to IEC 62103, rated insulation voltage 300 V
Input/power supply reinforced insulation acc. to IEC 62103, rated insulation voltage 300 V
Output/power supply not available , common pole terminal 14+
Output/Output not available , common pole terminal 14+

Indicators/settings

Display elements LEDs
Control elements DIP-switch
Configuration via DIP switches
Labeling space for labeling at the front

Directive conformity

Electromagnetic compatibility

Directive 2014/30/EU EN 61326-1:2013 (industrial locations)

Conformity

Galvanic isolation IEC 62103:2003
Electromagnetic compatibility NE 21:2004
Degree of protection IEC 60529:2001
Input EN 60947-5-6:2000

Ambient conditions

Ambient temperature -20 ... 60 °C (-4 ... 140 °F)

Mechanical specifications

Degree of protection IP20
Connection screw terminals
Mass approx. 150 g
Dimensions 20 x 119 x 115 mm (0.8 x 4.7 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 PTB 00 ATEX 2035

Marking 1 II (1) G [Ex ia] IIC

Input Ex ia IIC, Ex ia IIIC
Voltage U
Current I
Power P

Supply

Maximum safe voltage U

Output

Maximum safe voltage U

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 180997_eng.pdf

0-signal: switched off (off-state current ≤ 10 µA)

1 II (1) D [Ex ia] IIIC

10.5 V

o

13 mA

o

34 mW (linear characteristic)

o

40 V DC (Attention! The rated voltage can be lower.)

m

40 V DC (Attention! The rated voltage can be lower.)

m

rms

rms

2

1

3

4

6

2
5

13 15

12

9

10

7

14

11

8

KFD2-ST2-Ex1.LB

OUT CHK PWR

S2

S1

S3

III

Front view

LED red:
LB/SC

LED green:
Power supply

Switch S2
(output selection II)

Removable terminals
green

Removable terminal
blue

Switch S1
(mode of operation)

Switch S3
(LB/SC-monitoring)

LED yellow:
Transistor output

Switch Amplifier KFD2-ST2-Ex1.LB

Germany: [phone]Pepperl+Fuchs Group

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

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Technical Data

Certificate TÜV 99 ATEX 1499 X

Marking 1 II 3G Ex nA II T4

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 , EN

International approvals

FM approval

Control drawing 116-0035

CSA approval

Control drawing 116-0047

IECEx approval

IECEx certificate IECEx PTB 05.0011
IECEx marking [Ex ia] IIC , [Ex ia] I , [Ex ia] IIIC

General information

Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals

Accessories

Optional accessories - power feed module KFD2-EB2(.R4A.B)(.SP)

50303:2000

where applicable. For information see www.pepperl-fuchs.com.

- universal power rail UPR-03(-M)(-S)

- profile rail K-DUCT-BU(-UPR-03)

Assembly

Accessories

KFD2-EB2 Power Feed Module

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 180997_eng.pdf

3

Switch Amplifier KFD2-ST2-Ex1.LB

Germany: [phone]Pepperl+Fuchs Group

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

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Accessories

KFD2-EB2.R4A.B Power feed module, redundant supply

KFD2-EB2.R4A.B.SP Power feed module with spring terminals, redundant supply

KFD2-EB2.SP Power feed module with spring terminals

UPR-03 Universal Power Rail with end caps and cover, 3 conductors, length: 2 m

UPR-03-M Universal Power Rail with end caps and cover, 3 conductors, length: 1,6 m

UPR-03-S Universal Power Rail with end caps and cover, 3 conductors, length: 0.8 m

K-DUCT-BU

K-DUCT-BU-UPR-03 Profile rail with UPR-03- * insert, 3 conductors, wiring comb field side blue

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 180997_eng.pdf

4

Germany: [phone]Pepperl+Fuchs Group

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

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Switch Amplifier

789

10 11 12

123
456

13 14 15

1

PWRCHKOUT

S1
S2
S3

123

123

S1

S3

IIS2I

Configuration

KFD2-ST2-Ex1.LB

Switch position

SFunction Position

1 Mode of operation output I active with high input current I

with low input current II

2 Assignment output II Switching state like output I I

Fault indication output (passive if fault) II

3 Line fault detection ON I

OFF II

Operating states

Control circuit Input signal

Initiator high impedance/contact opened low input current

Initiator low impedance/contact closed high input current

Lead breakage, lead short circuit Line fault

Factory setting: switch 1, 2 and 3 in position I

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 180997_eng.pdf

5