KFU8-UFC-1.D PEPPERL+FUCHS

Description

KFU8-UFC-1.D PEPPERL+FUCHS Frequency Converter

Product Dimensions：

1-channel signal conditioner
• Universal usage at different power supplies
• Input for 2- or 3-wire sensors, NAMUR sensors or dry
contacts
• Input frequency 1 mHz … 12 kHz
• Current output 0/4 mA … 20 mA
• Relay and transistor output
• Start-up override
• Line fault detection (LFD)
• Up to SIL2 acc. to IEC 61508/IEC 61511
Function
This signal conditioner provides the isolation for nonintrinsically
safe 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. 2
General specifications
Signal type Digital Input
Supply
Connection terminals 23, 24
Rated voltage Un 20 … 90 V DC / 48 … 253 V AC 50 … 60 Hz
Power loss/power consumption ≤ 2 W ; 2.5 VA / 2.2 W ; 3 VA
Input
Connection Input I: 2-wire sensor: terminals 1+, 3- three wire sensor: terminals 1+, 2- and 3
input II: terminals 13+, 14- start-up override;
Input I 2- or 3-wire sensor, sensor acc. to EN 60947-5-6 (NAMUR) or mechanical contact
Open circuit voltage/short-circuit
current
22 V / 40 mA
Input resistance 4.7 kΩ
Switching point/switching hysteresis logic 1: > 2.5 mA ; logic 0: < 1.9 mA
Pulse duration > 50 µs
Input frequency 0.001 … 12000 Hz
Lead monitoring breakage I ≤ 0.15 mA; short-circuit I > 4 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

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