25
Chapter 1
Power Supply Capacity of System
Reexamination
Reexamination
Yes
Yes
Yes
Yes
Yes
Necessary
No
No
No
No
Unnecessary
No
No
Yes
Proposed system construction plan
A unit should be changed
or removed
A unit should be changed
or removed
Centrailzed power supply method
Local power supply method
Calculation of voltage drop value
Calculation of total current consump-
A local power supply unit
is needed in view of the calculated
voltage drop value
Decision 1
The I/O device should be
connected using 2-core cable
(for the D-G line only)
Decision 3
An I/O device generates
large noise
Decision 2
The main power supply unit and local
power supply machine should be the
small capacity type
Out of rated range
of cable connector
(refer to page 153)
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