Rockwell-automation 1771-QB Linear Pos. Manual de usuario Pagina 48

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Installing the Linear Positioning Module
Chapter 5
59
Figure 5.6
AC
Power and Ground Connections
Disconnect
Power
Supply for
Discrete
Inputs
G
L1 N
Power
Supply for
Discrete
Outputs
G
L1 N
Power
Supply for
I/O Chassis
Backplane
G
L1 N
Power
Supply for
Analog
Outputs
G
L1 N
Power
Supply for
Transducer
Circuits
G
L1 N
I/O Chassis
Ground Bus
Central
Ground Bus
Fuse
120 VAC
X
1
X
2
Isolation/
StepDown
Transformer
H
1
H
3
H
2
H
4
L1
50047
L2
L3
Fuses
Incoming
AC
In the grounded AC system shown above, the low side of the isolation
transformer is connected to the central ground bus. Figure 5.6 also shows
connections from the central ground bus to each power supply and to the I/O
chassis ground bus shown in Figure 5.4.
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