Pepperl+Fuchs Frequency Converter with Trip Values KFU8-UFC-Ex1.D

Pepperl+Fuchs Frequency Converter with Trip Values KFU8-UFC-Ex1.D

Pepperl+Fuchs Frequency Converter with Trip Values KFU8-UFC-Ex1.D

Frequency Converter with Trip Values KFU8-UFC-Ex1.D

Features

• 1-channel isolated barrier
• Universal usage at different power supplies
• Input for NAMUR sensors or dry contacts
• Input frequency 1 mHz ... 5 kHz
• Current output 0/4 mA ... 20 mA
• Relay contact and transistor output
• Start-up override
• Line fault detection (LFD)
• Up to SIL 2 acc. to IEC 61508/IEC 61511

Pepperl+Fuchs Frequency Converter with Trip Values KFU8-UFC-Ex1.D

Function

This isolated barrier is used for intrinsic safety applications. It is a universal frequency converter that changes a digital input (NAMUR sensor/mechanical contact) into a proportional free adjustable 0/4 mA ... 20 mA analog output and functions as a switch amplifier and a trip alarm.
Also 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 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 circuit is indicated by a red LED.
For additional information, refer to the manual and www.pepperl-fuchs.com.

Pepperl+Fuchs Frequency Converter with Trip Values KFU8-UFC-Ex1.D

Technical data

General specifications
Signal type Digital input
Supply
Connection terminals 23, 24
Rated voltage 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: intrinsically safe: terminals 1+, 3-
Input II: non-intrinsically safe: terminals 13+, 14-
Input I acc. to EN 60947-5-6 (NAMUR), see system description for electrical data
Pulse duration > 50 µs
Input frequency 0.001 ... 5000 Hz
Lead monitoring 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 output I: terminals 10, 11, 12
output II: terminals 16, 17, 18
outout III: terminasl 19+, 20-
output IV: terminals 8+, 7-
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)
0-signal: switched off (off-state current ≤ 10 µA)
Output IV analog
Current range 0 ... 20 mA or 4 ... 20 mA
Open loop voltage ≤ 24 V DC
Load ≤ 650 Ω
Fault signal downscale I ≤ 3.6 mA , upscale ≥ 21.5 mA (acc. NAMUR NE43)

Pepperl+Fuchs Frequency Converter with Trip Values KFU8-UFC-Ex1.D