Pepperl+Fuchs KFU8-DW-1.D | Universal Rotation Speed Monitor, LED

Pepperl+Fuchs KFU8-DW-1.D | Speed Monitor with Universal Input and Display

Overview

The Pepperl+Fuchs KFU8-DW-1.D is a versatile rotation speed monitor designed for precise monitoring of shaft and motor speeds. It supports a wide frequency range up to 40 kHz and accepts input from various sensors, including NAMUR, 2-, 3-, and 4-wire sensors, and rotary encoders.

This unit includes a 4-digit LED display, multiple timer functions, and configurable relay outputs, making it an ideal solution for industrial motion detection, underspeed/overspeed alarms, and rotation diagnostics.

Key Features

• Sensor Compatibility: Works with NAMUR, 2-/3-/4-wire sensors, and rotary encoders

• Wide Frequency Range: 0.002 Hz to 40,000 Hz

• Display: 4-digit LED for real-time speed feedback

• Output: 1 changeover relay contact (NO/NC)

• Start-up Override Function: Adjustable from 0.1 to 999.9 seconds

• 10 Timer Modes: ON/OFF delays, defined pulse duration, pulse expansion, etc.

• Output Signal Inversion: Monitor either overspeed or underspeed

• Teach-in Function: Simplifies setup of switching points

• Housing Width: 20 mm – compact DIN rail design

Technical Specifications

• Model: KFU8-DW-1.D

• Part No.: 190149

• Power Supply:

  • 20–30 V DC, 100–130 V AC, or 200–230 V AC (depending on model)

  • Power Consumption: <5 W or <5 VA

• Inputs:

  • Input 1 (NAMUR): 8.2 V DC open-circuit voltage, 6.5 mA short-circuit current

  • Input 2 (switching sensors): 16–30 V (HIGH), 0–6 V (LOW), max 40 kHz

  • Input 3 (start-up override): 16–30 V DC or jumper input

• Output:

  • Relay Contact: 1 × changeover (NO/NC)

  • Max Load: 250 V AC / 2 A or 40 V DC / 2 A

  • Response Delay: ~20 ms

  • Mechanical Life: >30 million switching cycles

• Speed Settings:

  • Adjustable Switching Point: Via front panel keys

  • Pulse Length (min): 12–20 μs

  • Teach-in Mode: For fast setup

• Ambient Temperature:

  • Operation: -20 to +60 °C

  • Storage: -40 to +85 °C

• Housing/Installation:

  • Dimensions: 20 × 119 × 115 mm

  • Mounting: DIN rail (EN 60715)

  • Protection: IP20

Applications

• Rotating Machinery – Shaft speed feedback, motor status, gearbox diagnostics

• Conveyors & Material Handling – Underspeed or blockage detection

• Pump & Fan Monitoring – Overspeed alarms or efficiency monitoring

• Safety & Control Loops – Integration into fail-safe shutdown systems

Why Choose the KFU8-DW-1.D?

• High-speed detection up to 40 kHz

• Universal sensor compatibility

• Bright LED for fast setup and diagnostics

• Reliable relay output with long mechanical life

• Compact and easy to install in control cabinets

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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