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 eq uipment, in ju n ction boxes, i n side panels, be h ind operator stations, in N E MA
enclosures as little as 4" deep, and in other locations where space is limited. The area should be
clean and free of airborn e con taminants, with adequat e 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.