Pepperl Fuchs KFD2-UFT-Ex2.D User Guide

24 V DC

Zone 2

Div. 2

Zone 0, 1, 2
Div. 1, 2

KFD2-UFT-Ex2.D

3-

1+

16
17
18

10
11
12

I

II

III

IV

13+
14­15+

7­8+

V

6-

4+

10 kΩ 10 kΩ

400 Ω ≤ R ≤ 2 kΩ

10 kΩ 10 kΩ

400 Ω ≤ R ≤ 2 kΩ

24 V DC

23+
24-

Power Rail

24 V DCERR

I

II

19+

20-

21+

mA

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]

Function

Frequency Converter with Direction and Synchronization Monitor

KFD2-UFT-Ex2.D

2-channel isolated barrier

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24 V DC supply (Power Rail)

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Dry contact or NAMUR inputs

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Input frequency 1 mHz ... 1 kHz

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Current output 0/4 mA ... 20 mA

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Relay contact and transistor output

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Start-up override

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Configurable by PACTware or keypad

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Line fault detection (LFD)

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This isolated barrier is used for intrinsic safety applications. It analyzes 2 digital signals (NAMUR sensor/mechanical contact) from a hazardous
area and functions as a rotation direction indicator, slip monitor, frequency monitor or synchronization monitor.
Each proximity sensor or switch controls a passive transistor output. The 2 relay outputs indicate if the input signal is above or below the trip value
or the rotational direction.
The analog output can be programmed to be proportional to the input frequency or slip differential.
The unit is easily programmed by the use of a keypad located on the front of the unit or with the PACTware™ configuration software.
Line fault detection of the field current 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- or power feed module/Power Rail
Rated voltage U
Rated current I
Power dissipation 2.2 W
Power consumption 2.5 W

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 231200_eng.pdf

r

r

20 ... 30 V DC
approx. 130 mA

1

KFD2-UFT-Ex2.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

Interface

Programming interface programming socket

Input

Connection side field side
Connection input I: terminals 1+, 3-

Input I, II 2-wire sensor, sensor acc. to EN 60947-5-6 (NAMUR) or mechanical contact

Open circuit voltage/short-circuit current 8.2 V / 10 mA
Pulse duration min. 250 µs , overlap on direction of rotation signal: ≥ 125 µs
Input frequency rotation direction monitoring 0.001 ... 1000 Hz slip monitoring 10 ... 1000 Hz
Line fault detection breakage I ≤ 0.15 mA; short-circuit I > 6.5 mA

Input III, IV

Active/Passive I > 4 mA (for min. 100 ms) / I < 1.5 mA
Open circuit voltage/short-circuit current 18 V / 5 mA

Output

Connection side control side
Connection output I: terminals 10, 11, 12

Output I, II signal , relay

Contact loading 250 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 III and IV signal , electronic output, passive

Contact loading 40 V DC
Signal level 1-signal: (external voltage) - 2.5 V max. for 10 mA or 3 V max. for 100 mA (100 mA,

Output V analog

Current range 0 ... 20 mA or 4 ... 20 mA
Open loop voltage max. 24 V DC
Load max. 650 Ω
Fault signal downscale I ≤ 3.6 mA, upscale I ≥ 21.5 mA (acc. NAMUR NE43)

Collective error message Power Rail

Transfer characteristics

Input I and II

Measurement range 0.001 ... 1000 Hz
Resolution slip monitoring: 1% frequency measurement: 0,1% of measured value; but >0.001Hz
Accuracy slip monitoring: 1% frequency measurement: 0.5% of measured value; but >0.001Hz
Measuring time frequency measurement: < 100 ms
Influence of ambient temperature 0.003 %/K (30 ppm)

Output I, II

Response delay ≤ 200 ms

Output V

Resolution < 10 µA
Accuracy < 30 µA
Influence of ambient temperature 0.005 %/K (50 ppm)

Galvanic isolation

Input I, II/other circuits reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Input III, IV/power supply and collective error functional insulation acc. to IEC 62103, rated insulation voltage 50 V
Output I, II/other circuits reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Mutual output I, II, III reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 231200_eng.pdf

input II: terminals 4+, 6­input III: terminals 13+, 14- (control input 1)
input IV: terminals 15+, 14- (control input 2)

output II: terminals 16, 17, 18
output III: terminals 19+, 20­output IV: terminals 21+, 20­output V: terminals 7-, 8+

short-circuit proof) -2.5 V (50 mA, short-circuit/overload proof)
0-signal: switched off (off-state current ≤ 10 µA)

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