FP212D250-22 SIEMENS | Alldatasheet

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Technical content

Features

  • High output voltage
  • High operating temperature
  • Robust plastic housing
  • Signal amplitude is speed independent
  • Biasing magnet build in
  • Marking green Typical applications
  • Detection of speed
  • Detection of position
  • Detection of sense of rotation
  • Angle encoder
  • Linear position sensing

Characteristics (TA = 25°C) Measuring arrangements By approaching a soft iron part close to the sensor a change in its resistance is obtained. The potential divider circuit of the magneto resistor causes a reduction in the temperature dependence of the output voltage VOUT . Parameter Symbol Value Unit Operating temperature TA – 40/ + 140 °C Storage temperature Tstg – 40/ + 150 °C Power dissipation1) Ptot 450 mW Supply voltage2) VIN 10 V Insulation voltage between terminals and magnet VI > 60 V Thermal conductivity (when soldered) G thA ≥ 5 mW/K Nominal supply voltage VIN N 5V Total resistance, (δ =∞ ,I≤ 1 mA) air gap (δ =∞ ) R1-3 1000… 1600 Ω Center symmetry3) (δ =∞ ) M ≤ 10 % Offset voltage4) (atVIN N andδ =∞ ) V0 ≤ 130 mV Open circuit output voltage5) (at VIN N andδ = 0.2 mm) Vout pp > 1100 mV Cut-off frequency fc > 20 kHz 1) Corresponding to diagramPtot =f(TA) 2) Corresponding to diagramVIN =f(TA) 4) Corresponding to measuring circuit inFig. 2 5) Corresponding to measuring circuit inFig. 2 and arrangement as shown inFig. 1 M R 12– R 23–– R 12–

  1. Digital revolution counting For digital revolution counting, the sensor should be actuated by a magnetically soft iron toothed wheel. The tooth spacing should correspond to about twice the magneto resistor The two resistors of the sensor are supplemented by two additional resistors in order to obtain the sensor output voltage as a bridge voltage VOUT . The output voltageVOUT without excitation then is 0 V when the offset is compensated. Fig. 1 Schematic representation of a toothed wheel actuating an FP 212 D 250-22 Fig. 2 Measuring circuit and output voltageVOUT waveform
  1. Linear distance measurement To convert small distances into a proportional electric signal, a small soft iron part of definite width (e.g.b = 1.8 mm) is moved over the face of the sensor. Proportional signals for distances up to 1.5 mm can be obtained in this way. The sinusoidal output signal gives a voltage proportional to distance in the zero crossover region (seeFig. 3). Fig. 3 Arrangement for analogue application Maximum supply voltage versus temperature VIN =f(TA)

Output voltage (typical) versus temperatureVOUTpp =f(TA),δ = 0.2 mm VOUTpp atTA = 25°C 100% Total resistance (typical) versus temperature R1-3 =f(TA),δ =∞ Output voltage (typical) versus airgapVOUTpp =f(δ),TA = 25°C VOUTpp atδ = 0.2 mm 100% Max. power dissipation versus temperature Ptot = f(TA),δ =∞