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2. Tripwire - Wikipedia

   en.wikipedia.org/wiki/Tripwire

   A tripwire may be installed in the vicinity of industrial equipment, such as a conveyor belt to enable workers to stop the equipment quickly. [4] These may also be called emergency stop pull-cords. [5]

3. Conveyor belt - Wikipedia

   en.wikipedia.org/wiki/Conveyor_belt

   The speed switch will stop the belt if the switch is not registering that the belt is running at the required speed. The belt rip switch will stop the belt when there is a cut, or a flap indicating that the belt is in danger of further damage. An emergency stop may be located on the conveyor control box in case of trip chord malfunctions.

4. Kill switch - Wikipedia

   en.wikipedia.org/wiki/Kill_switch

   An emergency switch in Japan. On railways, [1] an emergency stop is a full application of the brakes in order to bring a train to a stop as quickly as possible. [2] This occurs either by a manual emergency stop activation, such as a button being pushed on the train to start the emergency stop, or on some trains automatically, when the train has passed a red signal or the driver has failed to ...

5. Emergency brake (train) - Wikipedia

   en.wikipedia.org/wiki/Emergency_brake_(train)

   Emergency Brake Handle on Bombardier commuter rail equipment, Sounder, Seattle, WA. In the USA, an emergency stop cord is not used. Any visible cord running within the body of a railway car would have been what was known as the "communicating cord". This was a method of signalling the engine operator (known in the US as the "engineer").

6. Safety relay - Wikipedia

   en.wikipedia.org/wiki/Safety_relay

   A normal relay uses a wire coil and the mechanical movement of the metal contacts to switch the load on and off. The metal contacts may weld shut after repeated operation cycles. If this happens, the machine would continue running if the operator pressed the emergency stop pushbutton. This would be hazardous for the operator.

7. Andon (manufacturing) - Wikipedia

   en.wikipedia.org/wiki/Andon_(manufacturing)

   Once the problem is troubleshot and fixed, a second pull of the andon cord authorizes the production to be resumed. The system typically indicates where the alert was generated, and may also provide a description of the issue. Modern andon systems can include text, graphics, or audio elements.