Application manual for PSRclassic and PSRmultifunction, and the modular safety relay system
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102597_en_03
3.3
Stop
Stop categories in accordance with EN 60204-1
Every machine must be fitted with emergency stop equipment.
As per EN 60204-1, this must be implemented in stop category 0 or stop category 1 and
must be able to function independently of the operating mode.
In order to stop a machine, three stop categories are defined in EN 60204-1, which describe
the stop control sequence independently of an emergency situation.
Stop category 0
•
Uncontrolled stop by immediately switching off the power supply for the machine drives.
Figure 3-3
Stop category 0 example
Stop category 1
•
Controlled stop in which the power supply for the machine drives is maintained to obtain
the stop state, and the power supply is interrupted only when the function has stopped.
Figure 3-4
Stop category 1 example
S
top
Brake
Stop
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