Function description
Operating Manual PSSu E F 4DO 0.5(-T)(-R)
21316-EN-08
16
Derating diagram
(PSSu E F 4DO 0.5(-T)(-R)): Permitted ambient temperature T depend-
ent on load current I
20
40
60
80
100
0
0,25
0,50
T [°C]
I [A]
0,35
0,30
0,40
0,45
0,10
0,05
0,15
0,20
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 has the following protection mechanisms:
}
Common second shutdown route, tested regularly
}
Cyclical output tests
}
Tests for shorts between the outputs
The module provides the following diagnostic data:
}
Start-up error
}
Configuration error
}
FS communication error
}
Bus termination error
}
Temperature error: too warm
}
Temperature error: too hot
}
Output error
4.2.3
Reaction times
Information on the reaction times of the outputs can be found in the PSSuniversal System
Description.
