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Technical description
6.8.2
Emergency Stop
The Emergency Stop function is used for the fastest possible shutdown of the machine
in a dangerous situation. The Emergency Stop function is defined by IEC 60204. Princi-
ples of emergency stop devices and functional aspects are defined in ISO 13850.
The Emergency Stop function will be triggered by the manual actions of a single person.
It must be fully functional and available at all times. The user must understand instantly
how to operate this mechanism (without consulting references or instructions).
The Stop Category for the Emergency Stop must be determined by a risk evaluation of
the machine.
In addition to the requirements for stop, the Emergency Stop must fulfil the following
requirements:
l
l
l
Examples for implementation can be found in the KDN on page
Stop
6.8.3
Emergency Off
The Emergency Off function is used to switch-off the electrical power supply of the
machine. This is done to prevent users from any risk from electrical energy (for example
electrical impact). Functional aspects for Emergency Off are defined in IEC 60364-5-53.
The Emergency Off function will be triggered by the manual actions of a single person.
The result of a risk evaluation of the machine determines the necessity for an Emergency
Off function.
Emergency Off is done by switching off the supply energy by electro-mechanical switch-
ing devices. This results in a category 0 stop. If this stop category is not possible in the
application, then the Emergency Off function must be replaced by other measures (for
example by protection against direct touching).
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Emergency Stop must have priority over all other functions and controls in all operat-
ing modes.
The energy supply to any drive machinery that could cause dangerous situations
must be switched off as fast as possible, without causing any further hazards ( Stop
Category 0) or must be controlled in such a way, that any movement that causes
danger, is stopped as fast as possible (Stop Category 1).
The reset must not initiate a restart.
Function.
11/2018
S748-S772 Instructions Manual
Kollmorgen
Stop and Emergency
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