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Function description
4.2.2
Functions
Module supply
}
The module supply provides the module with voltage.
Voltage infeed
}
Refreshing the periphery supply: The relevant base module interrupts the connection to
the incoming (left-hand) periphery supply and C-rail on the module bus.
}
Supply to the module bus:
–
–
}
The module does not automatically switch off the periphery supply in the case of under
or overvoltage. However, there will be a visual signal ("24 V" LED) and a message will
be sent to the head module (entry in the error stack).
Block switching
}
The module is used to switch off the periphery supply safely on standard modules that
are arranged in blocks.
}
Each output block requires its own block switching module.
}
The periphery supply can be switched off via the controller's failsafe user program.
}
The periphery supply is switched off if a module error is detected.
}
A new supply voltage module or a terminating plate signifies the end of an output block.
}
The relationship between the load current and the operating temperature is illustrated in
the following derating diagram. The operating point should be below the characteristic
curve.
Derating diagram (PSSu E F BSW): Permitted ambient temperature T dependent on load
current I
T [°C]
100
80
60
40
25
20
0
Operating Manual PSSu E F BSW(-T)
21372-EN-06
Periphery supply for subsequent modules (right-hand side)
C-rail supply for subsequent modules (right-hand side)
1
2
3
4
5
6
7
I [A]
8
9
10
13
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