Pepperl+Fuchs KFU8-FSSP-1.D Frequency Voltage Current Converter

USD 391.20

Converts frequency signals up to 40 kHz from NAMUR, 2/3/4-wire sensors, or encoders into proportional 0-10V/0-20mA outputs with local display.

SKU PEPPERL-FUCHS-KFU8-FSSP-1.D Category
Top Brands > PEPPERL+FUCHS > PEPPERL+FUCHS Frequency Voltage Current Converters

Pepperl+Fuchs KFU8-FSSP-1.D Frequency Voltage Current Converter

Model Identifier KFU8-FSSP-1.D
Official Part Number KFU8-FSSP-1.D
GTIN Standard NA

Technical Overview

Converts frequency signals up to 40 kHz from NAMUR, 2/3/4-wire sensors, or encoders into proportional 0-10V/0-20mA outputs with local display.

Key Features

  • Limit frequency 40 kHz.
  • Voltage or current output (0-10V, 2-10V, 0-20mA, 4-20mA selectable).
  • Incrementing output (Spacing factor 1 ... 9999).
  • Multi-range power pack.
  • Compatible with 2-, 3-, 4-wire, and NAMUR sensors, as well as rotary encoders.
  • Auxiliary power output for sensors.
  • Connection via Power Rail.
  • Period measurement.
  • Display: Input in Hz or 1/min, output in V or mA.
  • Adjustable updating of indication (0.001 ... 2.5 s).
  • 4-digit, 7-segment red display, 7 mm digit height.
  • Keypad-driven menu for parameter assignment.
  • Snap-on mounting to 35 mm standard rail or screw fixing.

Multi-range power pack with auxiliary sensor power output, supporting wide AC/DC input voltages for flexible integration.

Technical Specification Matrix

ParameterValue
Rated Voltage (Ur)196 ... 250 V AC, 98 ... 127 V AC, 20 ... 30 V DC, 50/60 Hz
Power Consumption< 5 VA (AC), < 5 W (DC)
Open Loop Voltage (NAMUR input)8.2 V DC
Short-Circuit Current (NAMUR input)6.5 mA
Input Impedance (NAMUR input)1.2 kOhm
Sensor Supply19 ... 28 V DC non-stabilised, ≤ 30 mA short-circuit protected
Input Frequency≤ 40000 Hz, pulse pause/pulse length: ≥ 12 µs
Analog Voltage Output0 ... 10 V DC, 2 ... 10 V DC; max. 30 mA; resolution: 12 mV; Ri ≥ 330 Ω
Analog Current Output0 ... 20 mA, 4 ... 20 mA; resolution: 25 µA; Ri ≤ 600 Ω
Deviation≤ 0.2 % of full-scale value
Degree of ProtectionIP20
Ambient Temperature-25 ... 40 °C (-13 ... 104 °F)
Storage Temperature-40 ... 85 °C (-40 ... 185 °F)
Relative Humiditymax. 80 %, not condensing
Altitude0 ... 2000 m
FusingExternal fusing 4 A
Mounting TypeSnap-on to 35 mm standard rail or screw fixing
Physical Weight (kg)0.18
Dimensions L x W x H (cm)10.7 x 2 x 11.5

Industrial Applications

1. Precision Motor Speed Monitoring

This converter is ideal for industrial environments requiring accurate monitoring and control of motor rotational speeds. By connecting to an incremental rotary encoder, the KFU8-FSSP-1.D can convert high-frequency pulse signals (up to 40 kHz) into a standard analog current or voltage (e.g., 4-20mA), which can then be fed into a PLC or control system for precise speed regulation and closed-loop control. The integrated display provides real-time RPM feedback to operators.

Problem Solved

Ensures consistent and precise motor speed control by accurately converting high-frequency encoder pulses into scalable analog signals for automation systems, eliminating inaccuracies of less sophisticated signal conditioning.

Rotary EncoderFrequency Conversion4-20mA OutputMotor ControlRPM DisplayClosed-Loop Control40 kHz

2. Accurate Flow Rate Measurement in Process Control

In chemical or water treatment facilities, where flowmeters generate pulse outputs proportional to fluid flow, the KFU8-FSSP-1.D facilitates accurate flow rate measurement. It converts the incoming pulse train into a proportional analog output (e.g., 0-20mA) for seamless integration with process control systems and offers a local display in Hz or 1/min (which can be scaled to flow units), making it suitable for monitoring and managing critical fluid transfer operations.

Problem Solved

Addresses the challenge of integrating pulse-output flowmeters into analog control infrastructures by providing a reliable and precise frequency-to-analog conversion, enabling accurate flow monitoring and control.

FlowmeterPulse InputAnalog OutputProcess ControlFluid Dynamics0-20mA

3. Position Tracking and Counting on Automated Assembly Lines

For automated machinery and assembly lines, the converter can precisely track the position of components or count parts. By connecting to 2-, 3-, or 4-wire proximity switches or NAMUR sensors, it processes rapid switching signals, converting them into an analog voltage or current for position feedback to a master controller or utilizing its incrementing output for precise counting functions. Its IP20 rating makes it suitable for installation within control cabinets.

Problem Solved

Provides reliable position feedback and accurate component counting for automated systems by converting various sensor inputs into scalable analog or digital incrementing signals, improving machine synchronization and inventory management.

Proximity SensorNAMUR SensorIncrementing OutputPosition FeedbackPart CountingAutomated AssemblyIP20
Select your currency