Pepperl+Fuchs KFD2-SOT3-Ex1.LB.IO Switch Amplifier, 1-channel isolated barrier, 24 V DC supply (Power Rail), dry contact or NAMUR inputs.
This isolated barrier is used for intrinsic safety applications.
The device transfers digital signals (NAMUR sensors or dry contacts) from a hazardous area to a safe area.
The input controls two passive transistor outputs.
The outputs are galvanically isolated from each other.
Via switches the mode of operation can be reversed and the line fault detection can be switched off.
Via switch the function of the second output can be defined as a signal output or a fault indication output.
A fault is signalized by LEDs acc. to NAMUR NE44 and a separate collective error message output.
General specifications
Signal type Digital Input
Functional safety related parameters
Safety Integrity Level (SIL) SIL 2
Systematic capability (SC) SC 3
Supply
Connection Power Rail or terminals 14+, 15-
Rated voltage Ur 19 ... 30 V DC
Ripple ā¤ 10 %
Rated current Ir 20 ... 15 mA
Power dissipation ā¤ 1 W including maximum power dissipation in the output
Input
Connection side field side
Connection terminals 1+, 2+, 3-
Rated values acc. to EN 60947-5-6 (NAMUR), see manual for electrical data
Open circuit voltage/short-circuit current approx. 10 V DC / approx. 8 mA
Switching point/switching hysteresis 1.2 ... 2.1 mA / approx. 0.2 mA
Line fault detection breakage I ā¤ 0.1 mA , short-circuit I ā„ 6.5 mA
Pulse/Pause ratio min. 100 Āµs / min. 100 Āµs
Output
Connection side control side
Connection output I: terminals 7, 8 ; output II: terminals 10, 11
Rated voltage Ur 30 V DC
Rated current Ir 100 mA , short-circuit protected
Response time ā¤ 200 Āµs
Signal level 1-signal: (external voltage) - 3 V max. for 100 mA
0-signal: blocked output (off-state current ā¤ 10 ĀµA)
Output I signal ; Transistor
Output II signal or error message ; Transistor
Collective error message Power Rail
Transfer characteristics
Switching frequency ā¤ 5 kHz
Galvanic 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 basic insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Output basic insulation according to IEC/EN 61010-1, rated insulation voltage 60 Veff
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
Electromagnetic compatibility NE 21:2012 , EN 61326-3-2:2008
Degree of protection IEC 60529:2001
Input EN 60947-5-6:2000
Ambient conditions
Ambient temperature -20 ... 60 Ā°C (-4 ... 140 Ā°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) (W x H x D) , 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 EXA 16 ATEX 0016 X
Marking 1 II 3(1)G Ex nA [ia Ga] IIC T4 Gc
1 II (1)D [Ex ia Da] IIIC
1 I (M1) [Ex ia Ma] I
Input Ex ia
Voltage Uo 10.5 V
Current Io 17.1 mA
Power Po 45 mW (linear characteristic)
Supply
Maximum safe voltage Um 253 V AC (Attention! Um is no rated voltage.)
Output
Maximum safe voltage Um 253 V AC (Attention! The rated voltage can be lower.)
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 IEC 60079-0:2018+AC:2020 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
UL approval E106378
Control drawing 116-0424 (cULus)
IECEx approval
IECEx certificate IECEx EXA 16.0009X
IECEx marking Ex nA [ia Ga] IIC T4 Gc , [Ex ia Da] IIIC , [Ex ia Ma] I
