Pepperl+Fuches KFA6-DU-Ex1.D Switch Amplifier, Timer Relay, 1-channel isolated barrier, 230 V AC supply, dry contact or NAMUR inputs.

Pepperl+Fuches KFA6-DU-Ex1.D Switch Amplifier, Timer Relay, 1-channel isolated barrier, 230 V AC supply, dry contact or NAMUR inputs.

This isolated barrier is used for intrinsic safety applications. It is a highly configurable timer that accepts a digital signal (NAMUR sensor/mechanical contact) from a hazardous area and is commonly used in applications requiring on-delay, off-delay, one-shot, or pulse lengthening.
The output relay switch duration is easily adjusted, and a pulse divider function allows step-down ratios from 1:1 to 9999:1.
A reset can be activated via dry contact switch and used to terminate a particular time function. The unit is easily programmed by the use of a
keypad located on the front of the unit. Line fault detection of the field circuit is indicated by a red LED.

Technical Data
General specifications
Signal type Digital Input
Supply
Connection terminals 23, 24
Rated voltage Ur 230 V AC ± 10 %
Rated current Ir 15 mA
Power consumption 4 VA
Input
Connection side field side
Connection Input I: terminals 1+, 3- ; input II: terminals 13+, 14-
Input I acc. to EN 60947-5-6 (NAMUR), see manual for electrical data
Open circuit voltage/short-circuit current 8.2 V / 10 mA
Switching point/switching hysteresis 1.2 ... 2.1 mA / approx. 0.2 mA
Pulse duration min. 75 µs / 1 ms see instruction manuals; the maximum input frequency has to be
observed.
Input frequency 0 ... 80 Hz , pulse divider 0 ... 1 kHz
Line fault detection breakage I ≤ 0.15 mA; short-circuit I > 6.5 mA
Input II reset
Active/Passive I > 3 mA / I < 1.5 mA
Open circuit voltage/short-circuit current 12 V / 3.5 mA
Pulse duration min. 10 ms
Output
Connection side control side
Connection output I: terminals 10, 11, 12 ; output II: terminals 19+, 20-
Output I signal , Relay output
Contact loading 253 V AC/ 2 A / cos φ ≥ 0.7 ; 40 V DC/ 2 A
Mechanical life 5 x 107 switching cycles
Energized/De-energized delay approx. 20 ms / approx. 20 ms
Output II signal , electronic unit, isolated
Contact loading 40 V / 50 mA
Energized/De-energized delay after rising input flank 3 ms ; after falling input flank 2 ms
Signal level 1-signal: (L+) -2.5 V (50 mA, short-circuit/overload proof)
0-signal: blocked output (off-state current ≤ 10 µA)
Transfer characteristics
Input I
Resolution < 0.1 % of the set value, min. 10 ms Accuracy 2 ms Influence of ambient temperature 0.003 %/K (50 ppm) Galvanic isolation Input I/other circuits reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Output I/power supply and reset reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Output I, II against eachother reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Output II/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Output II/reset basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 Veff Reset/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff Indicators/settings Display elements LEDs , display Control elements Control panel Configuration via operating buttons 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 21:2006 Degree of protection IEC 60529:2001 Ambient conditions Ambient temperature -20 ... 60 °C (-4 ... 140 °F) Mechanical specifications Degree of protection IP20 Connection screw terminals Mass approx. 300 g Dimensions 40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) (W x H x D) , housing type C2 Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001 Data for application in connection with hazardous areas EU-type examination certificate TÜV 99 ATEX 1408 Marking 1 II (1)G [Ex ia Ga] IIC 1 II (1)D [Ex ia Da] IIIC 1 I (M1) [Ex ia Ma] I Supply Maximum safe voltage Um 253 V AC (Attention! The rated voltage can be lower.) Input I terminals 1+, 3-: Ex ia Voltage Uo 10.1 V Current Io 13.5 mA Power Po 34 mW (linear characteristic) Input II terminals 13+, 14- non-intrinsically safe Maximum safe voltage Um 40 V (Attention! The rated voltage can be lower.) Output I terminals 10, 11, 12 non-intrinsically safe Contact loading 253 V AC/2 A/cos φ > 0.7; 40 V DC/2 A resistive load
Maximum safe voltage Um 253 V (Attention! The rated voltage can be lower.)
Output II terminals 19+, 20- non-intrinsically safe
Maximum safe voltage Um 40 V (Attention! The rated voltage can be lower.)
Certificate TÜV 02 ATEX 1885 X
Marking 1 II 3G Ex nA nC IIC T4 Gc
Output I
Contact loading 50 V AC/2 A/cos φ > 0.7; 40 V DC/2 A resistive load
Galvanic isolation
Input I/other circuits 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 , EN 60079-15:2010
International approvals
FM approval
Control drawing 16-538FM-12
UL approval E223772
IECEx approval
IECEx certificate IECEx TUN 03.0000
IECEx marking [Ex ia Ga] IIC , [Ex ia Da] IIIC , [Ex ia Ma] I