Pilz PSSu E F 4DI - Manual (Page 13)

Function description
Operating Manual PSSu E F 4DI(­T)(­R)
21310­EN­05 13
Timing diagram
Input
PII
t
2
+t
3
t
t
1
t
1
t
2
+t
3
t
1
} Input: Signal at the input
} PII: Status of process image (PII)
} t
1
Minimum processing time (see Technical details)
} t
2
Maximum processing time (see Technical details)
} t
3
Cycle time of module bus
Shaded area: Status of process image (PII) undefined.
4.1.2 Integrated protection mechanisms
When the PSSu E F PS1(­T) is used to supply the system, the module supply is buffered
for 20 ms if the supply voltage is interrupted.
} Test pulse signals are always buffered for 20 ms.
The module provides the following diagnostic data:
} Start­up error
} Configuration error
} FS communication error
} Bus termination error
} Temperature error: Too warm
} Test pulse error
} Input error
4.1.3 Reaction times
Information on the reaction times of the inputs can be found in the PSSuniversal System
Description.