Pepperl Fuchs KFA6-DU-Ex1.D Users Guide

Switch Amplifier, Timer Relay

Zone 0, 1, 2
Div. 1, 2

KFA6-DU-Ex1.D

3-

1+

10
11
12

I

230 V AC

23
24

II

19+

20-

13+
14-

10 kΩ

10 kΩ

400 Ω ≤ R ≤ 2 kΩ

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

KFA6-DU-Ex1.D

1-channel isolated barrier

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230 V AC supply

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Dry contact or NAMUR inputs

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Relay contact and transistor output

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Adjustable output timer functions from 10 ms ... 60 min

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Input frequency up to 80 Hz; pulse divider up to 1 kHz

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Reset function

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Configurable by keypad

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Line fault detection (LFD)

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Function

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 www.pepperl-fuchs.com.

Connection

Technical Data

General specifications

Signal type Digital Input

Supply

Connection terminals 23, 24
Rated voltage U
Rated current I
Power consumption 4 VA

Input

Connection side field side
Connection Input I: terminals 1+, 3- ; input II: terminals 13+, 14-

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 231211_eng.pdf

r

r

230 V AC ± 10 %
15 mA

1

Switch Amplifier, Timer Relay KFA6-DU-Ex1.D

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Technical Data

Input I acc. to EN 60947-5-6 (NAMUR), see system description 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

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+, 20­Output 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)

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 V
Output I/power supply and reset reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Output I, II against eachother reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Output II/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Output II/reset basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 V
Reset/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V

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

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 231211_eng.pdf

observed.

0-signal: blocked output (off-state current ≤ 10 µA)

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