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Castell has developed the BEMF unit to provide fast, safe access to rotating machinery.

This unit monitors the motor and will only allow access to the machinery once the motor has stopped rotating.

This is said to be more efficient than a timed system as it enables entry at the moment the motor stops rather than a defined safe period, which has to be set in excess of the maximum period the motor could be rotating for.

While the motor is running a key remains trapped, this is only released when the machinery is safe.

This key is then used to gain access to the dangerous area through use of a Salus or an AI access lock.

Castell Safety

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