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Signal Converter with Trip Value KFU8-USC-1.D

  • 1-channel signal conditioner
  • Universal usage at different power supplies
  • Scaleable current or voltage input
  • Current or voltage output
  • Relay contact output
  • Configurable by keypad
  • Line fault detection (LFD)

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  KFU8-USC-1.D

General specifications
Signal typeAnalog input
Connectionterminals 14, 15
Rated voltage20 ... 90 V DC / 48 ... 253 V AC
Rated current≤ 80 mA DC / ≤ 45 mA AC
Power consumption≤ 1.6 W / ≤ 2.6 VA
Connection sidefield side
Connectionterminals 1+, 3- : mV, V ; terminals 2+, 3- : mA
Input resistancevoltage: 1 MΩ , current: max. 100 Ω
Limit30 V
Current0 ... 20 mA
Voltage0 ... 10 V / 0 ... 60 mV
Resolution15 Bit
Connection sidecontrol side
Connectionoutput I: terminals 10, 11, 12
output II: terminals 7-, 8+, 9-
Output Isignal, relay
Contact loading250 V AC/2 A/cos φ 0.7; 40 V DC/2 A
Mechanical life2 x 107 switching cycles
Energized/De-energized delayapprox. 10 ms / approx. 10 ms
Output IIanalog
Loadcurrent: max. 550 Ω , voltage: min. 1 kΩ
Analog voltage output0/1 ... 5 V , 0/2 ... 10 V
Analog current output0/4 ... 20 mA
Transfer characteristics
Deviation0.1 % of full-scale value
Resolution/accuracycurrent: 1 µA/20 µA
voltage: 0.5 mV/10 mV
mV: 3 µV/60 µV
Influence of ambient temperature0.003 %/K (30 ppm)
Reaction time≥ 150 ms/≤ 300 ms
Galvanic isolation
Input/Outputreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Input/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Output/power supplyreinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Display elementsdisplay
Control elementsControl panel
Configurationvia operating buttons
Labelingspace for labeling at the front
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 61326-1:2013 (industrial locations)
Low voltage
Directive 2014/35/EUEN 61010-1:2010
Electromagnetic compatibilityNE 21
Degree of protectionIEC 60529
Ambient conditions
Ambient temperature-20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protectionIP20
Connectionscrew terminals
Mass150 g
Dimensions20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) (W x H x D) , housing type B2
Height119 mm
Width20 mm
Depth115 mm
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see


ECLASS 13.027210107
ECLASS 12.027210107
ECLASS 11.027210107
ECLASS 10.0.127210107
ECLASS 9.027210107
ECLASS 8.027210107
ECLASS 5.127210107
ETIM 9.0EC002475
ETIM 8.0EC002475
ETIM 7.0EC002475
ETIM 6.0EC002475
ETIM 5.0EC001485
UNSPSC 12.132101514

Details: KFU8-USC-1.D


This signal conditioner is suitable for the connection of current and voltage signals and provides isolation for nonintrinsically safe applications.

The input ranges include 0 mA ... 20 mA, 0 V... 10 V or 0 mV... 60 mV. Subranges from the input ranges are selectable.

The output measuring signals are 0/4 mA ... 20 mA, 0/2 V... 10 V or 0/1 V... 5 V.

The output relay serves as trip value contact.

On the display the measured value can be indicated in various physical units.

The unit is easily programmed by the use of a keypad located on the front of the unit.

For additional information, refer to the manual and

Informative Literature: KFU8-USC-1.D

Language Selection:
LiteratureLanguageFile TypeFile Size
Application Report - Generating Electricity in Coal-Fired Power PlantsENGPDF412 KB
Application Report - Screening Systems in Sewage Treatment PlantsENGPDF577 KB

Product Documentation: KFU8-USC-1.D

Language Selection:
Safety and Security DocumentationLanguageFile TypeFile Size
Instruction manualENGPDF41 KB
Manual KF**-USC-1.DENGPDF395 KB
System ManualENGPDF3694 KB

Design / Simulation: KFU8-USC-1.D

Language Selection:
CADLanguageFile TypeFile Size
CAD Portal / CAD PortalALLLINK---

Approvals: KFU8-USC-1.D

Language Selection:
Declaration of ConformityCertificate No.LanguageFile TypeFile Size
EU Declaration of Conformity (P+F) / EU-Konformitäterklärung (P+F)DOC-2364AALLPDF100 KB

Associated Products: KFU8-USC-1.D

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