As per EN ISO 13850 the emergency stop function is a function that is intended to avert an impending hazard for personnel, damage to the machine or work in progress, or to alleviate existing hazards, and that is to be triggered by a single user action.
For this purpose controlgear is required that is equipped with a red pushbutton, that is the mushroom-head button in red; the button is to have a yellow background. The emergency stop function is generally only allowed to provide safety in addition to the directly acting safety functions. Directly acting safety functions are, for example, safety switches on safety doors that cause a hazard to be shut down without conscious action by the user.
Features
EUCHNER emergency stop controlgear features very innovative technology.
All controls ES-… have contact block monitoring to check whether the switching elements fitted are actually all correctly seated in the switch. If the switching elements should come loose unintentionally, an emergency stop command is triggered automatically by the detaching switching elements.
The controls ES-XN.. have a protective collar that makes it possible to fit a padlock when the mushroom-head button is pressed. As a result it is not possible to pull the control back out. This measure is used to provide personnel who must work in the danger area inside a machine with simple and effective protection against inadvertent power up of the machine.
The reset mechanism on the EUCHNER emergency stop controlgear is very sophisticated. The majority of buttons can be reset by either turning or pulling. And this feature is not an option, but in general standard.