An illustrative example embodiment of a switch monitoring device (30) includes a controller (42) configured to command a switch (38, 40) to enter at least one of a conducting state and a non-conducting state. A monitoring circuit (46) conducts current when the switch (38, 40) is in the conducting state. A comparator (48) provides an output indicating a relationship between a voltage of a selected portion of the monitoring circuit (46) and a threshold voltage (52). The controller (42) determines a condition of the switch (38, 40) based on the output of the comparator (48) and the command.
ELEVATOR SWITCH MONITORING DEVICE
AUFZUGSSCHALTERÜBERWACHUNGSVORRICHTUNG
DISPOSITIF DE SURVEILLANCE DE COMMUTATEURS D'ASCENSEURS
03.08.2022
Patent
Elektronische Ressource
Englisch
Switch device for elevator pit, elevator pit component and elevator system
Europäisches Patentamt | 2023
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