An E-Stop state (short for Emergency Stop) on a roll forming machine refers to the condition in which the machine has been immediately shut down due to an emergency situation or potential hazard.

When the roll forming machine is in an E-Stop state:

1. Machine Stops Immediately: All movement and operations of the machine are instantly stopped, including the rollers, cutters, and any feeding mechanisms.
2. Electrical Power Cut: The electrical circuits controlling the machine’s movement may be deactivated to ensure no further motion occurs.
3. Requires Reset to Resume: To restart the machine after an E-Stop event, an operator must inspect the situation, resolve the issue, and reset the system. This often involves physically resetting the E-Stop button and following safety protocols to ensure it's safe to resume operations.
4. Triggered by Hazard or Malfunction: The E-Stop may be activated manually by an operator, or automatically by the machine’s safety sensors if a critical error or malfunction is detected (such as a jam, misalignment, or safety barrier breach).

The E-Stop function is critical for maintaining safety in high-speed and high-force operations like roll forming, where rapid stops are sometimes necessary to prevent harm.