Bosch Rexroth Inline Series, Настройка и установка

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Examples and Tips
50/58 Bosch Rexroth AG | Electric Drives Inline | Application Description
and Controls
10.2 Voltage Concept Using the Example of a Station with an
R-IBS IL 24 BK-T/U-PAC
The incoming and outgoing remote bus potentials are isolated from one another
and from the station electronics. The incoming bus interface shield is connected to
FE via a Y capacitor. The outgoing bus interface shield is connected directly to FE.
FE and FE capacitive represent two individual isolated groups.
By providing separate supply options for the communications power and I/O
supply, it is easier to create electrical isolation between the logic and I/O.
The I/O circuit of analog terminals always features electrical isolation for the 24 V
bus coupler supply. The 24 V bus coupler supply is only looped through here and
is available again after the analog terminal.
Electrical isolation between different I/O areas can be created, e.g., by inserting a
new 24 V main supply using a power terminal. During this process the 24 V power
supply units on the low voltage side must not be connected with one another.
Fig. 10-1 shows the electrical isolation. A connection between GND (-) of the
supply voltage and functional earth ground may only be implemented at one point
in the station (point A). If ground (GND) of the bus coupler supply voltage were also
connected to functional earth ground, electrical isolation would be lost.
Electrically isolated areas within the station in Fig. 10-1 :
1 Bus logic of the station
2 I/O (outputs)
3 I/O (inputs)
Fig. 10-1 Creating electrical isolation
In the bus coupler, the power terminal, and the segment terminal, the electronics
has a capacitive connection to FE.
For notes on the electrical isolation of the individual terminals, please refer to
Chapter 4 .
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BA
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BK-T/U
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7427A012
U /U
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BK
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PWR IN
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A
R-IBS IL 24 BK-T/U
R-IB IL 24 PWR IN
DO DI
U /U
M S
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