3. Cabling
3-57
TI 33J01J10-01EN
l Example of Node Interface Unit A2NN30D and I/O Unit Cable Wiring (Junction
Box)
IOBP
IOBP IOBP
IOBP
F030515.ai
： System Wiring Area
NIU A2NN30D
Junction Box
Field Power Supply
Cable for Field
Power Supply
F-SB Bus
F-SB Bus
Power supply
cable for
Base Plate
From NIU
From NIU
NIU: Node Interface Unit (A2NN30D)
Figure Example of Node Interface Unit and I/O Unit
WARNING
The wiring that will be intrinsic safety circuits must be installed so that they are electrically
separated from the wiring of non-intrinsic safety circuits, including the in-cabinet wiring. Install the
wiring according to the IEC 60079-14 standards or the requirements for explosion-proof wiring of
the country where the system is used.
Oct. 5, 2018-00
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