Pilz PMCtendo DD5 Operating Manual page 25

Safety
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Reset shall not initiate a restart.
3.4.3 Emergency stop functions
The emergency stop function is used to shut down the electrical supply to the machine in
order to exclude hazards created by electrical power (e.g. electric shock). Functional as-
pects for emergency stop are defined in IEC 60364-5-53.
The emergency stop is triggered manually by a single human action e.g. via a positive-
opening pushbutton (red pushbutton on a yellow background).
The results from a hazard analysis of the machine determine whether an emergency stop is
required.
The emergency stop is achieved by shutting down the energy supply using electromechan-
ical relays. This leads to a Category 0 stop. The emergency stop must be implemented us-
ing other measures (e.g. protection against direct contact) if a Category 0 stop is not per-
mitted for the machine.
Operating Manual PMCtendo DD5
1002236-EN-04
or
controlled in such a way that the hazardous movement is stopped as quickly as
possible (stop category 1).
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