Pilz PIT m3.2p machine tools pictogram - Manual (Page 12)

Safety
Operating Manual PIT m3.2p
1003176­EN­02 12
3 Safety
3.1 Intended use
The operating mode selector switch is suitable for machines that can be operated in mul­
tiple operating modes with different protective measures and/or work procedures. It enables
you to switch between defined operating modes, such as:
} Set­up mode
} Manual mode
} Automatic mode
} Service
The operating mode selector switch meets the following safety requirements:
} Interlock to protect against unauthorised switching
Contact with a transponder key is required in order to switch to an operating mode.
} Access authorisations are restricted to certain groups
A transponder key with the relevant authorisation is required in order to switch to a cer­
tain operating mode.
} Prevents unintentional switching
The switch to a different operating mode is only recognised once the corresponding
(selection) button has been operated for a defined period ("deliberate operator action").
Multiple operation of (selection) buttons is detected.
} Safe "1oon" circuit of the operating mode outputs
The operating mode selector switch only ever leads to one operating mode output "1"
signal.
Depending on the application area and its respective regulations, the operating mode se­
lector switch can be used up to SIL CL 2 (EN IEC 62061) and up to PL d
(EN ISO 13849­1), if the operating modes are evaluated by a safety control system with
safe "1oon" evaluation.
Switching must not initiate a hazardous movement, nor can it cancel an existing control
command.