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

<

24 V DC supply (Power Rail)

<

Dry contact or NAMUR inputs

<

Input frequency 1 mHz ... 1 kHz

<

Current output 0/4 mA ... 20 mA

<

Relay contact and transistor output

<

Start-up override

<

Configurable by PACTware or keypad

<

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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2

Technical Data

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]

KFD2-UFT-Ex2.D

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

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Indicators/settings

Display elements LEDs , display
Control elements Control panel
Configuration via operating buttons

via PACTware

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
Input EN 60947-5-6:2000

Ambient conditions

Ambient temperature -20 ... 60 °C (-4 ... 140 °F)

Mechanical specifications

Degree of protection IP20
Connection screw terminals
Mass 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 1471

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 U

40 V DC (Attention! Um is no rated voltage.)

m

Input I and II terminals 1+, 3-; 4+, 6-: Ex ia

Voltage U
Current I
Power P

o

o

o

10.1 V

13.5 mA
34 mW (linear characteristic)

Input III and IV terminals 13+, 14-; 15+, 14- non-intrinsically safe

Maximum safe voltage U

m

40 V (Attention! Um is no rated voltage.)

Output I, II terminals 10, 11, 12; 16, 17, 18 non-intrinsically safe

Maximum safe voltage U

253 V (Attention! The rated voltage can be lower.)

m

Contact loading 253 V AC/2 A/cos φ > 0.7; 40 V DC/2 A resistive load (TÜV 99 ATEX 1471)

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Output III and IV terminals 19, 20, 21 non-intrinsically safe

Maximum safe voltage U

m

U

40 V DC (Attention! Um is no rated voltage.)

m

Output V terminals 8+, 7- non-intrinsically safe

Maximum safe voltage U

m

U

40 V DC (Attention! Um is no rated voltage.)

m

Interface RS 232

Maximum safe voltage U

40 V (Attention! Um is no rated voltage.)

m

Certificate TÜV 02 ATEX 1885 X

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

3

ESC

OK

KFD2-UFT­Ex2.D

RS232

PWR1

1 2

324

IN/
CHK

OUT

19 21

15

9

13

7

20

14

8

22 24

18

12

16

10

23

17

11

132 465

Front view

LED green:
Power supply

LED yellow/red:
Input pulses/
fault signal

LED yellow:
Output I ... IV

Removable
terminals
green

Removable
terminals
blue

Keypad

LC display

Programming jack

Place for labeling

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

Marking 1 II 3G Ex nA nC IIC T4 Gc

Output I, II

Contact loading 50 V AC/2 A/cos φ > 0.7; 40 V DC/1 A resistive load

Galvanic isolation

Input I, II/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 TUN 04.0007

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 www.pepperl-fuchs.com.

Assembly

Accessories

DTM Interface
Technology

PACTware 5.X FDT Framework

K-ADP-USB

KFD2-EB2 Power Feed Module

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

4

Accessories

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]

UPR-03 Universal Power Rail with end caps and cover, 3 conductors, length: 2 m

UPR-03-M Universal Power Rail with end caps and cover, 3 conductors, length: 1,6 m

UPR-03-S Universal Power Rail with end caps and cover, 3 conductors, length: 0.8 m

K-DUCT-BU

K-DUCT-BU-UPR-03 Profile rail with UPR-03- * insert, 3 conductors, wiring comb field side blue

KFD2-UFT-Ex2.D

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

5

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]

Frequency Converter with Direction and Synchronization Monitor

0.1

1

0.2

0.15

2

0.3

3

0.4

4

0.5

0 50 150 200 250100

I (A)

U (V)

1

KFD2-UFT-Ex2.D

Operation

The device processes two input frequencies up to a max. of 1 kHz. The following functions are provided by the device:

• Frequency measurement with freely adjustable trip value monitoring for high and low alarm as well as for frequency-current­conversion (0/4 mA ... 20 mA)

• Slip monitoring: The slip is calculated from the two input frequencies at channel I and II. If the freely parameterisable trip value
is exceeded, the respective output switches.

• Rotation direction signalling: The rotation direction is evaluated from the two input signals with the same frequency and a
phase shift of 90°. The corresponding outputs switch according to the direction of rotation.

• The frequency monitoring can be used in combination with rotation direction signalling or slip monitoring.

• Synchronisation monitor: The synchronisation monitor compares the pulse counts of the two inputs. If the measured
difference in the pulses is greater than the programmed value the corresponding outputs are switching.

The two electronic outputs serve to repeat the input signals.

Characteristic Curve

Maximum Switching Power of Output Contacts

Resistive load DC

Resistive load AC

1 max. 105 switching cycles

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

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