Figure 6-10 Connection By A Power Tap - Hitachi S10mini LQS070 Hardware Manual

6 CABLING
(5) Power supply tap and communication power supply
The DiviceNet does not require communication power supply for each nodes because it
feeds power directly from cables. Instead, connect a communication power supply
rated at 24 V to the main line. LQS070, however, does not use power supply from the
network because it has a internal communication power supply except when another
node without power supply is connected to it.
There are two ways of connecting power lines to the main line: by a dedicated power
tap and by a terminal block (TB). T-branch taps can be used if the current
consumption is 3 A or less.
Basically, DeviceNet uses a single power supply per network. If two or more power
supplies are required (as the result of discussion in Section 6.1.5), they must be
separated. Power supply line V+ can be isolated by a power tap or a terminal block
(TB).
These separation methods are shown below.
Connector C
Power tap
Fuse B
For power cable connection
Fuse A
Power cable
For cable A connection
Main line B
Main line A
For cable B connection
Connector A
Connector B

Figure 6-10 Connection by a Power Tap

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