3 INSTALLATION AND MODULE MOUNTING
3-5
3.3.2 Dispersed
installation
As shown in Figure 3-3, dispersed installation installs the LPU or CPU unit of a programmable
controller in one cubicle and the I/O units in another separate cubicle(s). This installation style
is used when the I/O units of a programmable controller need to be installed in a distant
location(s) from its CPU unit or LPU unit.
Figure 3-3 An Example of Dispersed Installation
Power distribution panel
and other circuitry for
programmable controller
Grounding (Class D) other
than the grounding for
programmable controller
Power cables
Remote I/O cable
The wiring, insulation, and grounding
methods used are the same as those
used in the concentrated installation
of a programmable controller.
For details, see Subsection 3.3.1,
“Concentrated installation.”
LPU or CPU unit
I/O unit
I/O unit
NFB
NFB
H
N
LG
H
N
LG
Terminal block (TB)
Terminal block (TB)
Electrostatic-shielded
insulating transformer
Electrostatic-shielded
insulating transformer
NFB
H
N
LG
Class D grounding for programmable controller
Class D grounding for
programmable controller
Содержание HSC-2100
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