Pilz PMCprotego D.72/000/0/0/2/208-480VAC - Manual (Page 31)

Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
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3.4 Stop and E-STOP functions
3 Safety
3.4 Stop and E-STOP functions 3400 Stop and E-STOP functions 3- 3.4.1 Stop functions
Stop functions 3- ][Sicherheit_Stopp
The stop function is used to bring the machine to a standstill in normal
operation.
The stop functions are defined in EN 60204-1 (VDE 0113), paragraphs
9.2.2, 9.2.5.3.
Category 0
Stopping by immediate removal of power to the machine actuators (un-
controlled stop).
Category 1
A controlled stop, with power to the machine actuators available to
achieve the stop and then removal of power when the stop is achieved.
Category 2
A controlled stop, with power left available to the machine actuators.
The stop category shall be determined from the hazard analysis of the
machine.
Appropriate measures to ensure a reliable stop are also required.
Category 0 or 1 stops shall be operational regardless of the operating
mode. A Category 0 stop shall take priority. Stop functions shall operate
by de-energising the relevant circuit and shall override related start func-
tions.
Where required, facilities to connect protective devices and interlocks
shall be provided. Where applicable, the stop function shall signal that
such a condition exists. The reset of the stop function shall not initiate
any hazardous conditions.
][Sicherheit_Stopp_Zusatz
Safety functions in accordance with EN 61800-5-2 such as SS1 (safe
stop 1) and SS2 (safe stop 2) can be implemented either with the safety
card or with external safety relays combined with the STO function.