VEGA KFD2-SR2-Ex2.2S User Manual

Switch Amplifier

KFD2-SR2-Ex2.2S

Features

• 2-channel isolated barrier

• 24 V DC supply (Power Rail)

• Dry contact or NAMUR inputs

• 2 x 2 relay contact outputs with AND logic

• Line fault detection (LFD)

• Reversible mode of operation

• Up to SIL2 acc. to IEC 61508

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.

Each sensor or switch controls two form A normally open
relay contacts for the safe area load. The normal output state
can be reversed using switches S1 and S2. Switch S3 is used
to enable or disable line fault detection of the field circuit.

During an error condition, the relays revert to their de­energized state and the LEDs indicate the fault according to
NAMUR NE44.

A unique collective error messaging feature is available when
used with the Power Rail system.

Assembly

Front view

LED yellow:
Relays channel Ι

LED red:
LB/SC channel Ι

LED yellow:
Relays channel ΙΙ

LED red:
LB/SC channel ΙΙ

2

1

5

4

KFD2-SR2-Ex2.2S

1

OUT CHK PWR

2

S1
S2
S3

III

7

8

10

11

13 15

14

Removable terminals
blue

3
6

LED green:
Power supply

Switch S1
(Mode of operation channel Ι)

Switch S2
(Mode of operation channel ΙΙ)

9

12

Switch S3
(LB/SC-monitoring)

Removable terminals
green

Connection

2

KFD2-SR2-Ex2.2S

1+

I

10 kΩ

400 Ω ≤ R ≤ 2 kΩ

10 kΩ

2+

3-

4+

II

10 kΩ

400 Ω ≤ R ≤ 2 kΩ

10 kΩ

5+

6-

7
8
9

10
11
12

I

II

III

IV

14+

24 V DC

15-

Zone 0, 1, 2

Release date 2010-02-02 18:14 Date of issue 2010-03-19 181284_ENG.xml

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Div. 1, 2

Power Rail

24 V DCERR

Zone 2

Div. 2

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet www.pepperl-fuchs.com

1

Technical data KFD2-SR2-Ex2.2S

General specifications

Signal type Digital input

Supply

Connection Power Rail or terminals 14+, 15­Rated voltage 20 ... 30 V DC
Ripple ≤ 10 %
Rated current ≤ 50 mA
Power loss 1 W
Power consumption < 1.3 W

Input

Connection terminals 1+, 2+, 3-; 4+, 5+, 6­Rated 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 ≥ 20 ms / ≥ 20 ms

Output

Connection output I: terminals 7, 8 ; output II: terminals 8, 9 ; output III: terminals 10, 11 ; output IV: terminals 11, 12
Collective error message Power Rail
Output I, II, III, IV channel 1, 2; relay
Contact loading 50 V AC/1 A/cos φ > 0.7; 40 V DC/1 A resistive load
Minimum switch current 1 mA / 24 V DC
Energized/De-energized delay approx. 20 ms / approx. 20 ms
Mechanical life 108 switching cycles

Transfer characteristics

Switching frequency ≤ 10 Hz

Electrical isolation

Output/power supply Basic insulation according to IEC 61140, rated insulation voltage 50 V
Output/Output Basic insulation according to IEC 61140, rated insulation voltage 50 V

Directive conformity

Electromagnetic compatibility

Directive 2004/108/EC EN 61326-1:2006

Low voltage

Directive 2006/95/EC EN 50178:1997

Conformity

Electromagnetic compatibility NE 21
Protection degree IEC 60529
Protection against electric shock IEC 61140

Ambient conditions

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

Mechanical specifications

Protection degree IP20
Mass approx. 150 g
Dimensions 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 in) , housing type B2

Data for application in connection
with Ex-areas

EC-Type Examination Certificate PTB 00 ATEX 2083 , for additional certificates see www.pepperl-fuchs.com

Group, category, type of protection ¬ II (1)GD [EEx ia] IIC [circuit(s) in zone 0/1/2]
Input EEx ia IIC
Voltage Uo 10.5 V
Current Io 13 mA
Power Po 34 mW (linear characteristic)

Supply

Maximum safe voltage U

m

253 V AC / 125 V DC (Attention! Um is no rated voltage.)

Output

Contact loading 50 V AC/1 A/cos φ > 0.7; 40 V DC/1 A resistive load
Maximum safe voltage U

m

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

Statement of conformity TÜV 99 ATEX 1493 X , observe statement of conformity

Group, category, type of protection,

¬ II 3G Ex nA nC IIC T4

temperature classification

Electrical isolation

Input/input not available
Input/Output safe galvanic isolation acc. to EN 50020, voltage peak value 375 V
Input/power supply safe galvanic isolation acc. to EN 50020, voltage peak value 375 V

Directive conformity

Release date 2010-02-02 18:14 Date of issue 2010-03-19 181284_ENG.xml

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet www.pepperl-fuchs.com

eff

eff

2

Technical data KFD2-SR2-Ex2.2S

Directive 94/9/EC EN 50014, EN 50020 , EN 60079-0:2006, EN 60079-15:2005

International approvals

FM approval

Control drawing 116-0035

CSA approval

Control drawing 116-0047

General information

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.pepperl­fuchs.com.

Release date 2010-02-02 18:14 Date of issue 2010-03-19 181284_ENG.xml

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet www.pepperl-fuchs.com

3

Technical data KFD2-SR2-Ex2.2S

Configuration

Switch position

S Function Position

123
456

1

PWRCHKOUT

2

123

S1
S2
S3

789
10 11 12
13 14 15

S1

S3

123

IIS2I

1 Mode of operation

Channel I (relay)

energized

2 Mode of operation

Channel II (relay)

energized

3 Line fault detection ON I

Operating status

Control circuit Input signal

Initiator high impedance/

contact opened

Initiator low impedance/

contact closed

Lead breakage,

lead short-circuit

with high input current I

with low input current II

with high input current I

with low input current II

OFF II

low input current

high input current

Line fault

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

Accessories

Power feed modules 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 100 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.

The Power Rail must not be fed via the device terminals of the individual devices!

Release date 2010-02-02 18:14 Date of issue 2010-03-19 181284_ENG.xml

Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany

Pepperl+Fuchs Group • Tel.: Germany [phone] • USA [phone] • Singapore [phone] • Internet www.pepperl-fuchs.com

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