N2: Emergency stop
11.2 Relevant standards
Basic Functions
818 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
11.2 Relevant standards
Relevant standards
Compliance with the following standards is essential for the emergency stop function:
• EN ISO 12000-1
• EN ISO 12000-2
• EN 418
• EN60204
EMERGENCY STOP
In accordance with EN 418, an emergency stop is a function that:
• Is intended to prevent or diminish developing or existing risks to operating personnel, and damage to the
machine or machined materials.
• is triggered by a single action of a person, if the normal stop function is not suitable for it.
Hazards
In the terms of EN 418, risks may arise from:
• Functional irregularities (machine malfunctions, unacceptable properties of the material to be machined,
human error, etc.).
• Normal operation.
Stadard EN ISO 12000-2
In accordance with the basic safety requirement of the EC Machinery Directive regarding emergency stop,
machines must be equipped with an energency stop device.
Exceptions
No emergency stop device is required on machines:
• Where an emergency stop device would not reduce the risk, either because the shutdown time would not be
reduced or because the measures to be taken would not be suitable for controlling the risk.
• that are held and operated manually.
NOTICE
The machine manufacturer is expressly directed to comply with the national and
international standards. The SINUMERIK controllers support the machine manufacturer
in the implementation of the emergency stop function according to the specifications in
the following function description. But the responsibility for the emergency stop function
(its triggering, sequence, and acknowledgment) rests exclusively with the machine
manufacturer.
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