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GFK-0825F Chapter 3 Installation 3-5
3
Locations for Field Control
Field Control terminal blocks must be installed on a 35mm x 7.5mm DIN rail. Modules can be
located on equipment, in junction boxes, inside panels, behind operator stations, in NEMA
enclosures as little as 4" deep, and in other locations where space is limited. The area should be
clean and free of airborne contaminants, with adequate cooling airflow.
Modules can be mounted in any orientation without derating the temperature specification. They
can be installed in a linear stack as shown on the left in the following illustration, using the short
connection cables provided with each I/O Terminal Block. An optional 21-inch (0.53 meter) cable
(IC670CBL002) is also available. Only one 21" cable can be used per Field Control station.
All of the I/O Terminal Blocks in a group must be connected either at the top or the bottom of the
Bus Interface Unit (BIU in the illustration). A Bus Interface Unit may not be connected between
I/O Terminal Blocks.
BIU
46405
BIU
BIU
BIU
Installing the DIN Rail
All Field Control Terminal Blocks must be mounted on a 7.5mm x 35mm DIN rail. The rail must
have a conductive (unpainted) finish for proper grounding.
For best vibration resistance, the DIN rail should be installed on a panel using screws spaced
approximately 6 inches (5.24cm) apart. When using multiple rail sections, be sure they are properly
aligned.