Pepperl+Fuchs KFU8-UFC-EX1.D | 231197 SIL2 Frequency Converter,

Pepperl+Fuchs KFU8-UFC-EX1.D | Frequency Converter, 1-Channel, SIL 2 – Part No. 231197

Overview

The KFU8-UFC-EX1.D (231197) by Pepperl+Fuchs is a 1-channel isolated barrier and frequency converter designed to convert NAMUR sensor or open collector signals from hazardous areas into a standard analog output signal (0/4–20 mA). It operates on 24 V DC and is DIN rail mountable, offering SIL 2 compliance per IEC/EN 61508 for safety-critical applications.

With configurable input ranges and output behavior, the unit provides flexible and reliable integration into control systems used in process automation, flow monitoring, and rotational speed detection.

Key Features

• Manufacturer Part Number: 231197

• Signal Conversion: Frequency input to analog output

• Input Type: NAMUR sensor or open collector (from hazardous area)

• Output Signal: 0/4–20 mA active

• Power Supply: 20–30 V DC

• Channel: 1-channel isolated

• SIL 2 (SC 3) certified per IEC/EN 61508

• Adjustable Frequency Range: Up to 20 kHz

• Fault Detection: Line fault and sensor failure monitoring

• Compact Design: DIN rail mountable, 20 mm housing width

• Galvanic Isolation: 3-way between input, output, and power supply

• LED Indicators: Status and error diagnostics

Technical Specifications

• Model: KFU8-UFC-EX1.D

• MFG Item No.: 231197

• Input Signal: Frequency signal from NAMUR sensor or open collector

• Output Signal: 0/4–20 mA analog (active output)

• Power Supply: 24 V DC (20–30 V DC range)

• Max Frequency Input: Up to 20,000 Hz

• Housing Width: 20 mm

• Mounting Type: DIN rail

• Operating Temperature: –20 °C to +60 °C

• Protection Class: IP20

• Certifications: ATEX, IECEx, UL, CSA

• Safety Compliance: SIL 2, SC 3 according to IEC/EN 61508

Applications

• Flow Meter Monitoring – Converts pulse/frequency to analog

• Rotational Speed Detection – Feedback to DCS or PLC

• Hazardous Area Integration – Isolated signal from zone 0/1 devices

• General Process Automation – Reliable analog conversion from digital input

Why Choose the KFU8-UFC-EX1.D (231197)?

• Converts pulse or frequency signals into standard analog output

• SIL 2 certified for safety-related applications

• Supports hazardous area inputs with fault detection

• Trusted Pepperl+Fuchs quality for demanding environments

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NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply