Release date 2012-04-19 13:49 Date of issue 2012-04-19 132960_eng.xml
KFD2-SR2-Ex2.W
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49-621-776-0 • USA +1-330-4253555 • Singapore +65-67-799091 • Internet
www.pepperl-fuchs.com 1
Switch Amplifier
2+
3-
1+
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
KFD2-SR2-Ex2.W
789
10
11
12
I
II
I
II
14+ 24 V DC
15-
Power Rail
ERR 24 V DC
5+
6-
4+
10 kΩ
10 kΩ
400 Ω ≤ R ≤ 2 kΩ
10 kΩ
10 kΩ
400 Ω ≤ R ≤ 2 kΩ
Connection
Assembly
• 2-channel isolated barrier
• 24 V DC supply (Power Rail)
• Dry contact or NAMUR bs
• Relay contact output
• 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.
The proximity sensor or switch controls a b C changeover
relay contact 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.
Features
1 3
4 6
2
5
13 15
12
9
10
7
14
11
8
KFD2-SR2-Ex2.W
1
2
OUT CHK PWR
S2
S1
S3
I II
Front view
LED yellow:
Relay output Ι
LED red:
LB/SC channel Ι
LED yellow:
Relay output ΙΙ
LED red:
LB/SC channel ΙΙ
Switch S3
(LB/SC-monitoring)
LED green:
Power supply
Removable terminals
green
Removable terminals
blue
Switch S1
(Mode of operation channel Ι)
Switch S2
(Mode of operation channel ΙΙ)
2
Release date 2012-04-19 13:49 Date of issue 2012-04-19 132960_eng.xml
Technical data KFD2-SR2-Ex2.W
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49-621-776-0 • USA +1-330-4253555 • Singapore +65-67-799091 • Internet
www.pepperl-fuchs.com 2
General specifications
Signal type Digital Input
Supply
Connection Power Rail or terminals 14+, 15-
Rated 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+, 6-
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 ≥ 20 ms / ≥ 20 ms
Output
Connection output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
Output I, II signal, relay
Minimum switch current 2 mA / 24 V DC
Energized/De-energized delay approx. 20 ms / approx. 20 ms
Mechanical life 107 switching cycles
Transfer characteristics
Switching frequency ≤ 10 Hz
Electrical isolation
Output/power supply reinforced insulation according to IEC 61140, rated insulation voltage 300 Veff
Output/Output reinforced insulation according to IEC 61140, rated insulation voltage 300 Veff
Directive conbity
Electromagnetic compatibility
Directive 2004/108/EC EN 61326-1:2006
Low voltage
Directive 2006/95/EC EN 61010-1:2010
Conbity
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
Mounting on 35 mm DIN mounting rail acc. to DIN EN 60715
Data for application in connection
with Ex-areas
EC-Type Examination Certificate PTB 00 ATEX 2080 , for additional certificates see
www.pepperl-fuchs.com
Group, category, type of protection ¬ II (1) G [Ex ia] IIC, II (1) D [Ex ia] IIIC
Input [Ex ia] IIC, [Ex ia] IIIC
Voltage Uo 10.5 V
Current Io 13 mA
Power Po 34 mW (linear characteristic)
Supply
Maximum safe voltage Um 253 V AC / 125 V DC (Attention! Um is no rated voltage.)
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
Maximum safe voltage Um 253 V AC (Attention! The rated voltage can be lower.)
Statement of conbity Pepperl+Fuchs
Group, category, type of protection ¬ II (3)G [Ex ic] IIC; [Ex nL] IIC
Input [Ex ic] IIC; [Ex nL] IIC
Voltage Uo 10.5 V
Current Io 13 mA
Power Po 34 mW (linear characteristic)
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 2012-04-19 13:49 Date of issue 2012-04-19 132960_eng.xml
Technical data KFD2-SR2-Ex2.W
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49-621-776-0 • USA +1-330-4253555 • Singapore +65-67-799091 • Internet
www.pepperl-fuchs.com 3
Statement of conbity TÜV 99 ATEX 1493 X , observe statement of conbity
Group, category, type of protection,
temperature class
¬ II 3G Ex nA nC IIC T4
Output
Contact loading 50 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load
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 conbity
Directive 94/9/EC EN 60079-0:2009, EN 60079-11:2007 , EN 60079-15:2005 , EN 61241-11:2006
International approvals
FM approval
Control drawing 116-0035
CSA approval
Control drawing 116-0047
IECEx approval IECEx PTB 11.0034
Approved for [Ex ia] IIC , [Ex ia] IIIC , [Ex ia] I
General inbation
Supplementary inbation EC-Type Examination Certificate, Statement of Conbity, Declaration of Conbity, Attestation of
Conbity and instructions have to be observed where applicable. For inbation see
www.pepperlfuchs.
com.
Release date 2012-04-19 13:49 Date of issue 2012-04-19 132960_eng.xml
Technical data KFD2-SR2-Ex2.W
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49-621-776-0 • USA +1-330-4253555 • Singapore +65-67-799091 • Internet
www.pepperl-fuchs.com 4
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!
Configuration
7 8 9
10 11 12
1 2 3
4 5 6
13 14 15
1
2
OUT CHK PWR
S1
S2
S3
1 2 3
1 2 3
S1
S3
II
S2
I
Switch b
Operating status
Factory settings: switch 1, 2 and 3 in b I
S Function Position
1 Mode of operation
Output I (relay)
energized
with high b current I
with low b current II
2 Mode of operation
Output II (relay)
energized
with high b current I
with low b current II
3 Line fault detection ON I
OFF II
Control circuit Input signal
Initiator high impedance/
contact opened
low b current
Initiator low impedance/
contact closed
high b current
Lead breakage,
lead short-circuit
Line fault
Accessories
