Transducers for frequency

Measuring transducer for frequency (square wave signal)


Measuring transducer VF5KD
  • Measuring transducer for frequency (square wave input) for wheel/tyre wear correction on rail vehicles
  • Simple application; for harsh environments
  • Compact design for mounting side by side
  • Tyre diameter setting via sealed drum scale
  • Operating status indication via integrated LED


Measuring transducers of type VF5..KD convert frequencies (square wave signals) into standardised output signals. They are mounted on G rails or top-hat rails. The sensor input and supply voltage for the output signal are galvanically isolated. The compact and robust design, as well as the relevant tests as per DIN EN 50155, make the product ideal for applications in the field of transport technology.

Technical data

Supply voltage Us9...32 VDC
Input signalSquare wave signals
Output signal0 ... 10 V/DC (VF5..KD.-G1), 2 ... 10 V/DC (VF5..KD.-G2), short-circuit-proof, load current 20 mA max.; 0 ... 20 mA (VF5..KD.-I1), 4 ... 20 mA (VF5..KD.-I2), load resistance 500 Ω max.
Operating temperature-20 °C ... +70 °C
ConnectionDIN EN 46244 gold-plated tab connector A6.3 x 0.8
MountingTS32 G-rail or TS35 top-hat rail

Ordering information

Type code structure
VF501-KD99-I2Example: VF501-KD99-I2
Input range fr / limit frequency fl
 Tyre type / maximum velocity type
 Output signal
Type code VF5..-KD
Input range fr/ limit frequency fl00fr: 10 … 100 Hz, fl: 50 … 100 Hz 
01fr: 20 … 1,000 Hz, fl: 100 … 1,000 Hz 
02fr: 200 … 10,000 Hz, fl: 1,000 … 10,000 Hz 
Tyre type / maximum velocity type KDxWith setting option for tyre diameter
x = key for tyre size as a function of the maximum
velocity that can be displayed (assigned when order is placed)
Output signal -G1-Output 0 … 10 V DC, short-circuit proof 
-G2-Output 2 … 10 V DC, short-circuit proof 
-I1-Output 0 … 20 mA 
-I2Output 4 … 20 mA 
VF5__-__-__Example: VF501-KD99-I2