Omron CompoBus/D (DeviceNet) Communications Card 3G3FV-PDRT1-SIN Benutzerhandbuch

2-8

1 Locating the Nodes on Both Sides of the Power Supply

Power Supply Tap
or T-branch Tap

Communications
power supply

Node

2 Locating the Nodes on One Side of the Power Supply

Note Configuration 1 is recommended for a single power supply to several nodes.

Power Supply Tap
or T-branch Tap

Node

Communications
power supply

3 Splitting the Power Supply System with Multiple Power Supplies

Communications
power supply

System 1

Special Power Supply Tap

Remove the fuse
and split +V.

Make –V the same for
Systems 1 and 2.

Special Power Supply Tap

System 2

Node

V+

V–

fuse

24 V

0 V

4 Duplex Power Supply with Multiple Power Supplies

Communications
power supply

Special Power
Supply Tap

Node

Special Power
Supply Tap

Note 1. If power supply specifications cannot be met with a single power supply when the current ca-

pacity of the Thick Cable exceeds 8 A even after the power supply location is modified, use
more than one communications power supply.

Note 2. In configuration 1, the power can be supplied in two directions to the trunk line as long as the

current capacity of each is 8 A or less when using Thick Cable, i.e., it is possible to have a
configuration with a total maximum current capacity of up to 16 A.

CompoBus/D Communications Line Design

Chapter 2