Pepperl+Fuches KFA6-SOT2-Ex2 Switch Amplifier, 2-channel isolated barrier, 230 V AC supply, dry contact or NAMUR inputs.
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 proximity sensor or switch controls a passive transistor output for the safe area load. The normal output state can be reversed using switch
S1 for channel I and switch S2 for channel II. Switch S3 enables or disables line fault detection of the field circuit.
During an error condition, the transistors revert to their de-energized state and LEDs indicate the fault according to NAMUR NE44.
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 Ur 207 ... 253 V AC, 45 ... 65 Hz
Power dissipation 1 W
Power consumption max. 1.5 W
Input
Connection side field side
Connection terminals 1+, 2+, 3-; 4+, 5+, 6-
Rated values acc. to EN 60947-5-6 (NAMUR), see manual for electrical data
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 ā¤ 0.1 mA , short-circuit I > 6 mA
Output
Connection side control side
Connection output I: terminals 7, 8 ; output II: terminals 8, 9
Switching voltage max. 40 V
Switching current max. 100 mA , short-circuit protected
Signal level 1-signal: switching voltage - 2.5 V max. at 10 mA switching current or 3 V max. at 100
mA switching current
0-signal: switched off (off-state current ā¤ 10 ĀµA)
Output I, II signal ; electronic output, passive
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 reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/Output not available
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 21:2012
Degree of protection IEC 60529
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 PTB 98 ATEX 2164
Marking 1 II (1) G [Ex ia] IIC
1 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 (Attention! Um is no rated voltage.)
Output
Maximum safe voltage Um 253 V AC (Attention! The rated voltage can be lower.)
Galvanic isolation
Input/input not available
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
UL approval
Control drawing 116-0145
CSA approval
Control drawing 116-0047
