Emergency Stop Button
The Emergency Stop Button is an important safety component of many electrical / electronic circuits, especially that control dangerous or moving equipment such as a CNC and many other types of equipment.
They are designed to allow an operator or viewer to stop the computer in a hurry if something goes wrong.
The E-Button are connected to the control circuit of the machine. Pressing the emergency stop button interrupts the operation of the machine.
This button (often more than one for large pieces of a computer) is large and very visible. In general it is where it can be easily visible and can be pressed by the operator of the equipment. Once pressed, the emergency stop button locks are locked into position and will not reset until manually operated by the operator.
The stop button has two contacts, one of normally open (NO) and one of normally closed (NC), being able to choose the one that most suits according to the type of the controller board.