Power Module PM330
Hardware Installation Manual, 12/2018, A5E32844552B AF
105
Fundamental safety technology principles
7
7.1
Standard stop functions
7.1.1
Emergency Off and Emergency Stop
"Emergency Off" and "Emergency Stop" are commands that minimize different risks in the
machine or plant.
The STO function is suitable for achieving an Emergency Stop but not an Emergency Off.
You can review the details about the definitions in EN 60204-1.
Risk:
Risk of electric shock:
Risk of unexpected motion:
Measure to minimize
risk:
Safe switch off
Switching off the electric power sup-
ply for the installation, either com-
pletely or partially.
Safely stop and safely prevent re-
starting
Stopping or preventing the dangerous
movement
Command:
Emergency Off
Emergency Stop
Solution:
Switch off the power supply:
Select STO:
It is permissible that you switch off
the inverter power supply as well.
However, switching off the voltage is
not required as a risk-reduction
measure:
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