Pepperl Fuchs KFA5-SR2-Ex1.W Users guide

Switch Amplifier

2

2+

3-

1+

Zone 0, 1, 2
Div. 1, 2

KFA5-SR2-Ex1.W

7
8
9

115 V AC

14
15

10 k

10 k

400 Ω ≤ R ≤ 2 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]

KFA5-SR2-Ex1.W

1-channel isolated barrier

<

115 V AC supply

<

Dry contact or NAMUR inputs

<

Relay contact output

<

Line fault detection (LFD)

<

Reversible mode of operation

<

Up to SIL 2 acc. to IEC 61508/IEC 61511

<

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 a form C changeover relay contact for the safe area load. The barrier output changes state when the input
signal changes state. The normal output state can be reversed using switch S1. Switch S3 is used to enable or disable line fault detection of the
field circuit.
During an error condition, relays revert to their de-energized state and LEDs indicate the fault according to NAMUR NE44.

Connection

Technical Data

General specifications

Signal type Digital Input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Supply

Connection terminals 14, 15

Rated voltage U

Power consumption 1 W

Input

Connection side field side

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 103371_eng.pdf

r

103.5 ... 126 V AC , 45 ... 65 Hz

1

Switch Amplifier KFA5-SR2-Ex1.W

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 terminals 1+, 2+, 3-

Rated values acc. to EN 60947-5-6 (NAMUR)

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

Pulse/Pause ratio min. 20 ms / min. 20 ms

Output

Connection side control side

Connection terminals 7, 8, 9

Output signal, relay

Contact loading 253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load

Energized/De-energized delay approx. 20 ms / approx. 20 ms

Mechanical life 107 switching cycles

Transfer characteristics

Switching frequency < 10 Hz

Galvanic isolation

Input/Output reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V

Input/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V

Output/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V

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)

Low voltage

Directive 2014/35/EU EN 61010-1:2010

Conformity

Electromagnetic compatibility NE 21:2006

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 2081

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

Input Ex ia

Voltage U

Current I

Power P

Supply

Maximum safe voltage U

Output

Contact loading 253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 103371_eng.pdf

1 II (1)D [Ex ia Da] IIIC
1 I (M1) [Ex ia Ma] I

10.6 V

o

19.1 mA

o

51 mW (linear characteristic)

o

126.5 V AC (Attention! Um is no rated voltage.)

m

eff

eff

eff

2

1

3

4

6

2
5

13 15

12

9

10

7

14

11

8

KFA5-SR2-Ex1.W

OUT CHK PWR

S2

S1

S3

III

Switch S2
(no functions)

Front view

LED yellow:
Relay output

LED red:
LB/SC

LED green:
Power supply

Removable terminals
green

Removable terminal
blue

Switch S1
(mode of operation)

Switch S3
(LB/SC-monitoring)

Switch Amplifier KFA5-SR2-Ex1.W

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

Maximum safe voltage U

253 V AC (Attention! The rated voltage can be lower.)

m

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

International approvals

FM approval

Control drawing 116-0035

UL approval

Control drawing 116-0145

CSA approval

Control drawing 116-0047

IECEx approval IECEx PTB 11.0031

Approved for [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I

General information

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

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

Assembly

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 103371_eng.pdf

3

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

KFA5-SR2-Ex1.W

Switch position

SFunction Position

1 Mode of operation output (relay) energized with high input current I

with low input current II

2 No function

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

Characteristic Curve

Maximum switching power of output contacts

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 103371_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

1

I (A)

2

4

10040

200

115 250

U (V)

20

0.5

0.2

Resistive load DC Resistive load AC

Electrical life
max. 10

5

switching cycles

Electrical life
max. 2.5 x 10

5

switching cycles

KFA5-SR2-Ex1.W

The maximum number of switching cycles is depending on the electrical load and may be higher when reduced currents and
voltages are applied.

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 103371_eng.pdf

5