Frequency Current Converters with
Limit Value
Input EEx ia IIC
KFU8-UFC-Ex1**
1+
10 k
3-
1+
3-
400
Ω ≤
R
≤
2 kΩ
•
•
•
•
•
•
•
•
•
•
•
•
48 ... 253 V AC / 20 ... 90 V DC
KFU8-UFC-Ex 1
GND
RXD
TXD
1-channel
Input frequency 0.001 Hz ... 5 kHz
Analogue output 0/4 mA ... 20 mA
Measuring range parameterizable
2 relay outputs
1 electronic output, isolated
Each output can be assigned indivi-
dual parameters, such as a limiting
value (high/low alarm), incremen-
ting, pulse separator or error mes-
sage output
Start-up override
Restart inhibit
Lead breakage (LB) and short-circuit
(SC) monitoring
Bounce filter
Parameterization via PC or control
panel (optional)
1+
3-
1+ 10 k
3-
1+
3-
K-ADP1
RS 232
PC
Signal procesor
TTL
yellow/
red
green
Error
yellow
yellow
yellow
U
Output
IV
0/4 ... 20 mA
KFU8-UFC-Ex1
48 ... 253 V AC / 20 ... 90 V DC
KFU8-UFC-Ex 1.D
13+ 14-
8+ 7-
19+ 20-
Output
III
10 11 12 16 17 18
23+ 24-
KFU8-UFC-Ex1.D
(with control panel)
Start
bridge
Function
The universal frequency converter con-
verts an input frequency into a frequen-
cy proportional current and offers at the
same time the possibility, to monitor the
limit values.
The frequency values for the minimum
(0 or 4 mA) and the maximum output
current (20 mA) are freely parameteriz-
able.
Also the functions of the switch outputs
(2 relay and 1 potential free transistor
output) are freely adjustable [limit value
indication (MAX- or MIN-alarm), serially
switched output, pulse seperator out-
put, error signal output].
A start-up override that can be activated
externally is integrated as well. The
maximum input frequency is 5 kHz.
Input and output currents are galvani-
cally isolated.
The universal voltage power pack al-
lows the operation of the KFU8-UFC-
Ex1... at various supply voltages at the
same terminals, without change-over or
consideration of the polarity.
The version KFU8-UFC-Ex1.D can be
adjusted by means of the control sur-
face and by means of the software, the
version KFU8-UFC-Ex1 only by means
of the software.
Aufbau
Output
II
Output
I
Safe area
Ausgabedatum
28.2.01
Subject to reasonable modifications due to technical advances.
Copyright Pepperl+Fuchs, Printed in Germany
1
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
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