Release date 2015-02-19 11:47 Date of issue 2015-02-19 103371_eng.xml
KFA5-SR2-Ex1.W
1
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group USA: +1 330 486 0002 Singapore: +65 6779 9091Germany: +49 621 776 2222
www.pepperl-fuchs.com pa-info@us.pepperl-fuchs.com pa-info@de.pepperl-fuchs.com pa-info@sg.pepperl-fuchs.com
Switch Amplifier
2+
3-
1+
Zone 0, 1, 2
Div. 1, 2
KFA5-SR2-Ex1.W
7
8
9
115 V AC
14
15
10 kΩ
10 kΩ
400 Ω ≤ R ≤ 2 kΩ
Connection
Assembly
• 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 SIL2 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, the relay reverts to its de-energized
state and the LEDs indicate the fault according to
NAMUR NE44.
2
Features
13
46
2
5
13 15
12
9
10
7
14
11
8
KFA5-SR2-Ex1.W
OUT CHK PWR
S2
S1
S3
IIISwitch 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)
Release date 2015-02-19 11:47 Date of issue 2015-02-19 103371_eng.xml
Technical data KFA5-SR2-Ex1.W
2
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group USA: +1 330 486 0002 Singapore: +65 6779 9091Germany: +49 621 776 2222
www.pepperl-fuchs.com pa-info@us.pepperl-fuchs.com pa-info@de.pepperl-fuchs.com pa-info@sg.pepperl-fuchs.com
General specifications
Signal type Digital Input
Supply
Connection terminals 14, 15
Rated voltage Un103.5 ... 126 V AC , 45 ... 65 Hz
Power consumption 1 W
Input
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 ≥ 20 ms / ≥ 20 ms
Output
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
Electrical isolation
Input/Output reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Directive conformity
Electromagnetic compatibility
Directive 2004/108/EC EN 61326-1:2006
Low voltage
Directive 2006/95/EC 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
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 EN 60715:2001
Data for application in connection
with Ex-areas
EC-Type Examination Certificate PTB 00 ATEX 2081 , for additional certificates see www.pepperl-fuchs.com
Group, category, type of protection ¬ II (1)G [Ex ia Ga] IIC
¬ II (1)D [Ex ia Da] IIIC
¬ I (M1) [Ex ia Ma] I
Input Ex ia
Voltage Uo 10.6 V
Current Io 19.1 mA
Power Po 51 mW (linear characteristic)
Supply
Maximum safe voltage Um126.5 V AC (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 Um253 V AC (Attention! The rated voltage can be lower.)
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 60079-11:2012
International approvals
FM approval
Control drawing 116-0035
UL approval
Release date 2015-02-19 11:47 Date of issue 2015-02-19 103371_eng.xml
Technical data KFA5-SR2-Ex1.W
3
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group USA: +1 330 486 0002 Singapore: +65 6779 9091Germany: +49 621 776 2222
www.pepperl-fuchs.com pa-info@us.pepperl-fuchs.com pa-info@de.pepperl-fuchs.com pa-info@sg.pepperl-fuchs.com
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 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.
Release date 2015-02-19 11:47 Date of issue 2015-02-19 103371_eng.xml
Technical data KFA5-SR2-Ex1.W
4
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group USA: +1 330 486 0002 Singapore: +65 6779 9091Germany: +49 621 776 2222
www.pepperl-fuchs.com pa-info@us.pepperl-fuchs.com pa-info@de.pepperl-fuchs.com pa-info@sg.pepperl-fuchs.com
Configuration
789
10 11 12
123
456
13 14 15
1
PWRCHKOUT
S1
S2
S3
123
123
S1
S3
II
S2
I
Switch position
Operating status
Factory settings: switch 1, 2 and 3 in position I
S Function Position
1Mode of operation
Output I (relay)
energized
with high input current I
with low input current II
2no function
3Line fault detection ON I
OFF II
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
Release date 2015-02-19 11:47 Date of issue 2015-02-19 103371_eng.xml
Technical data KFA5-SR2-Ex1.W
5
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group USA: +1 330 486 0002 Singapore: +65 6779 9091Germany: +49 621 776 2222
www.pepperl-fuchs.com pa-info@us.pepperl-fuchs.com pa-info@de.pepperl-fuchs.com pa-info@sg.pepperl-fuchs.com
The maximum number of switching cycles is depending on the electrical load and may be higher when reduced currents and
voltages are applied.
Maximum switching power of output contacts
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. 105 switching cycles
Electrical life
max. 2.5 x 105 switching cycles
