Electronic safety device and a conveyor system
First Claim
Patent Images
1. An electronic safety device comprising:
- a safety input terminal configured to receive a safety signal, the electronic safety device configured to block operation of an elevator, if the safety signal is not detected at the safety input terminal; and
an operation-preventing device configured to detect an operational anomaly in the safety input terminal, the operation-preventing circuit including a switch configured to short the safety input terminal, if the operational anomaly is detected in the safety input terminal.
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Abstract
The invention relates to an electronic safety device and a conveyor system comprising the same. The electronic safety device has a safety input for receiving a safety signal, the electronic safety device being configured to terminate its operation responsive to absence of the safety signal in the safety input. The electronic safety device comprises an operation-preventing circuit configured to detect an operational anomaly in the safety input, the operation-preventing circuit comprising a switch adapted to short the safety input when the operational anomaly is present in the safety input.
20 Citations
19 Claims
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1. An electronic safety device comprising:
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a safety input terminal configured to receive a safety signal, the electronic safety device configured to block operation of an elevator, if the safety signal is not detected at the safety input terminal; and an operation-preventing device configured to detect an operational anomaly in the safety input terminal, the operation-preventing circuit including a switch configured to short the safety input terminal, if the operational anomaly is detected in the safety input terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic safety device configured to control an elevator system, the electronic safety system configured to connect to a controller configured to engage one or more safety devices by selectively disconnecting a safety signal from a safety input terminal associated with the one or more safety devices based on safety data generated by one or more safety contacts, the electronic safety device comprising:
an operation preventing device connected to the safety input terminal, the operation preventing device including a switch, the operation preventing device configured to engage the one or more safety devices by adjusting the switch to short the safety input terminal, if the operation preventing device detects an anomaly present at the safety input terminal. - View Dependent Claims (14, 15, 16, 17, 18, 19)
Specification