An illustrative example embodiment of a switch monitoring device includes a controller configured to command a switch to enter at least one of a conducting state and a non-conducting state. A monitoring circuit conducts current when the switch is in the conducting state. A comparator provides an output indicating a relationship between a voltage of a selected portion of the monitoring circuit and a threshold voltage. The controller determines a condition of the switch based on the output of the comparator and the command.
ELEVATOR SWITCH MONITORING DEVICE
2022-08-04
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |
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