DIAGNOSTIC ELEMENT FOR VALIDATION OF BOLT DETECTION OF A GUARD LOCKING SWITCH IN A STATIC STATE

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 whenthe 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. 工业锁定开关包括感应感测电路，该感应感测电路使用非接触式技术来检测开关的锁定栓已转变到锁定位置。感应感测电路可以包括感应线圈、电容器以及将通过感应线圈的电流信号的频率转换成数字频率值