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    DIAGNOSTIC ELEMENT FOR VALIDATION OF BOLT DETECTION OF A GUARD LOCKING SWITCH IN A STATIC STATE
    2.
    发明公开
    DIAGNOSTIC ELEMENT FOR VALIDATION OF BOLT DETECTION OF A GUARD LOCKING SWITCH IN A STATIC STATE 审中-公开

    公开(公告)号：EP4286629A3

    公开(公告)日：2024-03-06

    申请号：EP23204573.2

    申请日：2020-05-29

    申请人： Rockwell Automation Technologies, Inc.

    发明人： WOLFE, Timothy P. ,  CAI, Yongyao

    IPC分类号： H03K17/95 ,  E05B81/66 ,  E05B81/72 ,  E05B81/64 ,  F16P3/08 ,  E05B47/00

    摘要： An industrial locking switch includes an inductive sensing circuit that uses a non-contact technique to detect when the switch's locking bolt has transitioned to the lock position. The inductive sensing circuit can comprise an inductive coil, a capacitor, and a converter that converts a frequency of a current signal through the inductive coil to a digital frequency value. A controller detects when the locking bolt has advanced to the lock position by monitoring the digital frequency value for frequency shifts indicative of a disturbance of the induction coil's magnetic field by the locking bolt. To validate operation of the inductive sensing system without requiring actuation of the locking bolt, a diagnostic switch connects a diagnostic capacitor to the inductive circuit to simulate the frequency shift caused by the locking bolt, and the inductive sensing system is validated if the expected frequency shift is detected.