SIGNAL CONDITIONERS

Function & Purpose

The KFU8-FSSP-1.D is an industrial signal converter designed to measure, display, and convert periodic signals (frequency or rotational speed) into proportional analog voltage/current outputs or scaled digital pulse outputs. It is widely used for monitoring rotating machinery, processing encoder signals, and integrating frequency-based measurements into process control systems.

• Frequency limit: Up to 40 kHz
   
• Analog outputs: Selectable
   
  • Voltage: 0–10 V, 2–10 V
     
  • Current: 0–20 mA, 4–20 mA
     
• Pulse output: Adjustable division factor (1–9999) for frequency scaling
   
• Input compatibility:
   
  • 2-, 3-, 4-wire proximity switches
     
  • NAMUR sensors (DIN EN 60947-5-6)
     
  • Incremental rotary encoders
     
• Auxiliary sensor power: 19–28 V DC, short-circuit protected
   
• Display: 4-digit 7-segment LED (Hz or RPM, V or mA)
   
• Update rate: Adjustable from 0.001 to 2.5 s
   
• Galvanic isolation between input, output, and supply
   

• Uses cycle (period) measurement for high accuracy
   
• Internal microcontroller calculates frequency or speed and generates proportional analog output via DAC
   
• Special mode for rotational speed measurement with configurable pulses-per-revolution (1–1200) to display true RPM
   
• Configurable measurement range final value for scaling analog output
   
• Supports both frequency (Hz) and speed (min⁻¹) display modes
   

• Supply voltage options: 100–130 V AC, 200–230 V AC, or 20–30 V DC
   
• Power consumption: < 5 VA (AC), < 5 W (DC)
   
• Input frequency range: ≤ 40 kHz (min. pulse width ≥ 12 µs)
   
• Accuracy: ≤ 0.2% of full-scale
   
• Response time: 5 ms processing interval
   
• Ambient temperature: –25 °C to +40 °C
   
• Protection class: IP20, for indoor use
   
• Mounting: DIN rail or screw fixing, modular housing
   

• Speed monitoring of motors, fans, pumps, conveyors
   
• Encoder signal conditioning for PLCs and control systems
   
• Pulse frequency scaling for downstream equipment
   
• Industrial automation & process control requiring analog representation of frequency or RPM
   
• Retrofitting older systems with modern analog input capability