Pilz 312 197, Operating Manual, Page: 12 / 29

Function description
Operating Manual PSSu E S PD-D
21975-EN-05
12
4 Function description
4.1 Block diagram
Module Bus
Periphery
Supply
+ 24 V DC
Data
(ST)
14 24 12 22 13 23
(C-Rail)
+ 24 V DC 0 V
11 21
Module
Supply
+ 5 V DC
4.2 Module features
4.2.1 Functions
}
The module routes the periphery supply from the module bus to the base module ter-
minals.
}
The periphery supply is available at the outputs.
The module provides advanced diagnostic data, which is also available in a status byte in
the ST-PII (not in system environment B):
}
Output overload/short circuit
}
Excess module temperature
4.2.2 Integrated protection mechanisms
When the PSSu E F PS1(-T) or PSSu E F PS2(-T)(-R) is used to supply the system, the
module supply is buffered for 20 ms if the supply voltage is interrupted.
The module provides the following diagnostic data:
}
Start-up error
}
Configuration error
}
ST communication error
}
Bus termination error
}
Output overload
}
Temperature error: too warm
}
Temperature error: too hot