Omron OMNUC W Series Manual page 104

Provisionally determine the
location of the power supply.
Step 1
Determine the best location of the
power supply from the graphs.
Are the power supply
specifications met?
Yes
Consider changing the
location of the power supply.
Consider using thick cable.
Are the power supply
Set the location for the power supply.
Flow Chart
Use the flow chart below to determine the communications power supply on the trunk line.
Satisfy the conditions for each drop line on the previous page.
No
No
specifications met?
Step 2
Yes
Calculate the best location
of the actual nodes.
Are the power supply
specifications met?
Yes
6-7
6.3 Precautions for Communications Line Design
No
Consider changing the location of
the power supply.
Consider using thick cable.
Consider changing the location of
high current consumption nodes.
Are the power supply
specifications met?
Step 3
Yes
Split the power supply
system by installing more
than two power supplies.
6
No