The sensor arrangement comprises at least a sensor which measures the current of the safety circuit and is galvanically separated from the elevator safety circuit and connected to the safety circuit without interrupting the safety circuit wiring.
The measurement of the safety circuit current is preferably performed without a galvanic connection to the safety circuit.
The invention relates to an electromotive drive with a control unit controlled via a manual switch and containing a control board, as well as with a safety unit or a safety circuit.
The invention concerns a method and a system for monitoring the operation of the safety circuit of an elevator, said safety circuit containing safety switches connected in series with a contactor and a static circuit.
The system includes a safety circuit panel with a safety circuit and a power cable with a safety release in the form of a safety ejection subsystem.
A safety system comprises an activation mechanism, a safety circuit, and a drive system in communication with each other.
Inferences can be made about the condition of a safety switch by measuring and examining the current of the safety circuit of the elevator after the state of the safety circuit has changed.
The signal conductor of the safety signal (13) is wired from the safety signal (20, 34) to the drive device (1), and the safety circuit (20, 34) comprises means (14) for disconnecting/connecting the safety signal (13).
In the method, the current flowing in the safety circuit is measured and the state of the safety circuit is determined on the basis of the measured current.
The invention relates to a kettle with security cut-off.
The invention relates to a safety circuit for a passenger conveyor system.
A switch actuator for a pivotally mounted gate safety circuit.
The state of the safety circuit of the battery is determined and the on/off control of the device is made inactive while the safety circuit remains active.
Inside the housing (1), a safety-oriented circuit (10) is arranged.
The safety circuit comprises a sensor (4) switched between a controlled circuit (1) and a sensor input (SE) of a trigger circuit (2).
A safety-oriented turn-off signal (S) can be fed from outside the housing (1) to said circuit.
A safety critical system (60) comprises at least one integrated circuit device (50) with at least one power safety circuit (30).
A safety circuit (20) for an electric motor.
Concealed switches (2, 3) are provided to deactivate the safety circuit.
The invention concerns a method and a system for ensuring the operation of the safety circuit of an elevator or escalator, said safety circuit containing safety contacts (10, 12, 14) connected in series with a contactor (16).
Said security circuit also comprises a control for the switch element (S1), connecting the switch element (S1) in accordance with the power measured in the security circuit.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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