Function description
Operating Manual PSS u2 ES 4DO R 8A
1004548-EN-03
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4
Function description
4.1
Block diagram
1
O0.13
K0
5
O0.14
15
O3.44
K3
Module
Supply
Data
(FS)
Periphery
Supply
+24 V DC
Mo
d
u
le
B
u
s
13
O3.44
. . .
. . .
Fig.: Block diagram PSS u2 ES 4DO R 8A
4.2
Supply
}
The module is supplied with voltage via the head module.
4.3
Integrated protection mechanisms
The module has the following protection mechanisms:
}
Protective separation between both relay contacts (see
)
}
Protective separation between both relay contacts and the periphery supply as well as
the module supply, in accordance with DIN VDE 0110 overvoltage category 2 in a protec-
ted industrial network
}
Temperature monitoring
The module provides the following diagnostic data:
}
Start-up error
}
Configuration error
}
ST communication error
}
Temperature warning: too warm
}
Temperature error: too hot
