Function description
Operating Manual PSS u2 ES 4DI
1003609-EN-03
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4
Function description
4.1
Block diagram
3
24 V
1
I0
5
I1
9
I2
13
I3
7
24 V
15
24 V
11
24 V
Module
Supply
Data
(ST)
Periphery
Supply
+24 V DC
Mo
d
u
le
B
u
s
Input
Periphery
Supply
Input
Input
Input
Fig.: Block diagram PSS u2 ES 4DI
4.2
Supply
}
The module is supplied with voltage via the head module.
Periphery supply
}
The module routes the periphery supply from the module bus to the terminal block.
}
The periphery supply is used to supply the sensors.
}
The module does not switch the periphery supply.
}
The periphery supply has no current limitation.
4.3
Inputs
}
The status of the inputs is signalled to the head module via the module bus.
}
The inputs are fitted with a configurable software filter.
}
Pulse stretching can be configured for the inputs.
}
Any signals that are shorter than the signal suppression time t
pulse_sup
are filtered out. The
signal suppression time depends on the configured software filter time.
t
pulse_sup
= t
filter
– 300 µs
