Switch Amplifier, Timer Relay KFA5-DU-Ex1.D

1-channel isolated barrier 115 V AC supply Dry contact or NAMUR inputs Relay contact and transistor output Adjustable output timer functions from 10 ms ... 60 min Input frequency up to 80 Hz, pulse divider up to 1 kHz Reset function Configurable by keypad Line fault detection (LFD) 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. For additional information, refer to the manual and . General specifications Signal type Digital Input Supply Connection terminals 23, 24 Rated voltage 115 V AC ± 10 % Rated current 35 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 µ,s / 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 &le, 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 &phi, &ge, 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 &le, 10 µ,A) 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) , housing type C3 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 II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I Supply Maximum safe voltage 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 &phi, > 0.7, 40 V DC/2 A resistive load (TÜV 99 ATEX 1408) 50 V AC/2 A/cos &phi, > 0.7, 40 V DC/2 A resistive load (TÜV 02 ATEX 1885 X) Maximum safe voltage 253 V (Attention! The rated voltage can be lower.) Output II terminals 19+, 20- non-intrinsically safe Maximum safe voltage 40 V (Attention! The rated voltage can be lower.) Certificate TÜV 02 ATEX 1885 X Marking II 3G Ex nA nC IIC T4 Gc Output I Contact loading 50 V AC/2 A/cos &phi, > 0.7, 40 V DC/1 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 116-0305 UL approval E223772 IECEx approval IECEx TUN 03.0000 Approved for [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I General information Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see .