Pepperl Fuchs KFU8-UFC-Ex1.D User manual

Frequency Converter with Trip Values

2

Zone 0, 1, 2
Div. 1, 2

KFU8-UFC-Ex1.D

3-

1+

16
17
18

10
11
12

I

II

19+
20-

III

13+
14-

7­8+

IV

AC/DC

23
24

mA

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]

KFU8-UFC-Ex1.D

1-channel isolated barrier

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Universal usage at different power supplies

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Input for NAMUR sensors or dry contacts

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Input frequency 1 mHz ... 5 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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Line fault detection (LFD)

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Up to SIL 2 acc. to IEC 61508/IEC 61511

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48 V AC ... 253 V AC/20 V DC ... 90 V DC

Function

This isolated barrier is used for intrinsic safety applications.
The device is a universal frequency converter that changes a digital input signal into a proportional free adjustable 0/4 mA ... 20 mA analog output
signal and functions as a switch amplifier and a trip alarm.
The functions of the switch outputs (2 relay outputs and 1 potential free transistor output) are easily adjustable [trip value display (min/max alarm),
serially switched output, pulse divider output, error signal output].
The device is easily configured by the use of keypad or with the PACTware configuration software.
A fault is signalized by LEDs acc. to NAMUR NE44.
For additional information, refer to the manual and www.pepperl-fuchs.com.

Connection

Technical Data

General specifications

Signal type Digital Input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Supply

Connection terminals 23, 24
Rated voltage U
Power dissipation/power consumption ≤ 2 W ; 2.5 VA / 2.2 W ; 3 VA

Interface

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 231197_eng.pdf

r

20 ... 90 V DC / 48 ... 253 V AC 50 ... 60 Hz

1

Frequency Converter with Trip Values KFU8-UFC-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

Programming interface programming socket

Input

Connection side field side
Connection Input I: intrinsically safe: terminals 1+, 3-

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

Pulse duration > 50 µs
Input frequency 0.001 ... 5000 Hz
Line fault detection breakage I ≤ 0.15 mA; short-circuit I > 6.5 mA

Input II startup override: 1 ... 1000 s, adjustable in steps of 1 s

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 electronic output, passive

Contact loading 40 V DC
Signal level 1-signal: (L+) - 2.5 V (50 mA, short-circuit/overload proof)

Output IV 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 ≥ 21.5 mA (acc. NAMUR NE43)

Transfer characteristics

Input I

Measurement range 0.001 ... 5000 Hz
Resolution 0.1 % of the measurement value , ≥ 0.001 Hz
Accuracy 0.1 % of the measurement value , > 0.001 Hz
Measuring time < 100 ms
Influence of ambient temperature 0.003 %/K (30 ppm)

Output I, II

Response delay ≤ 200 ms

Output IV

Resolution < 10 µA
Accuracy < 20 µA
Influence of ambient temperature 0.005 %/K (50 ppm)

Galvanic isolation

Input I/other circuits reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 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
Output III/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Output III/start-up override basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 V
Output III/IV basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 V
Output IV/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Start-up override/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Interface/power supply reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 V
Interface/output III basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 V

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 231197_eng.pdf

Input II: non-intrinsically safe: terminals 13+, 14-

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

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

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