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Inductive proximity switch with diagnosis function

November 2014
11
Author: Ralf Reines
Company: Verein Deutscher Werkzeugmaschinenfabriken e.V.
Inductive proximity switch with diagnosis function

To limit the number of possible variations in machine tool making an inductiveDESINA proximity switch has been specified for system planning:

  • M12x1 cylinder casing
  • Length L~65 mm
  • PNP-make contact, 3-wire or 2-wire versions
  • Switching gap Sn=2mm
  • Flush installation
  • Switching frequency 800Hz
  • UBem=24V DC (10V-30V)
  • Short-circuit proof, EMC tested
  • Yellow LED's around circumference:
    • continuous => moderated
    • flashing => adjustment
  • Connected with M12x1
    • PIN 1: + 24 V
    • PIN 2: Diagnosis (digital)
    • PIN 3: 0 V
    • PIN 4: closer signal
    • PIN 5: not reserved
  • Degree of protection IP67/68
    • Break in line, short circuit
    • Damage to front
    • Defect in electronics
    • Fault message on PIN 2
    • OK: high level , not OK: low level
    • Level as per IEC 1131-2Diagnosis function:

The diagnosis function is only possible if no LED is integrated in the sensor line. This is why the specified standard sensor/ actuator cable is used.

 

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