Pilz PSSu H FS SN SD - Manual (Page 13)

Function description
Operating Manual PSSu H FS SN SD(­T)(­R)
1001451­EN­08 13
PSSu H FS SN SD (­T)(­R): Derating diagram for infeed for module supply: Permitted ambi­
ent temperature T dependent on load current I
20
40
60
80
100
0
1 2
T [°C]
I [A]
1,4 1,2 1,6 1,8 0,4 0,2 0,6 0,8
4.1.3 Integrated protection mechanisms
The module has the following protection mechanisms:
} Multi­channel diverse processor section
} Cyclical self tests
} Potentially isolated SafetyNET p interface
} Infeed for module supply
– Polarity protection
– Voltage monitoring
– Transient voltage limitation
– 20 ms voltage buffer if the supply voltage is interrupted
} Module supply
– Short circuit­proof
} Periphery supply
– Voltage monitoring (exceeding upper/lower limit)
4.1.4 SD card
The SD card has the following functions:
} The SD card is used to store the naming data and the device project; see PSS 4000
System Description.
} The SD card is part of the safety concept on PSS 4000. If the SD card is missing or has
been swapped, the next time the PSSu system is booted it will be unable to achieve the
operating status "PSSu System in RUN condition without error". The SD card has a