Bently Nevada 140471-01 I/O Module

I/O Module Positioning

Internal barrier I/O modules have an increased depth over that of standard barrier I/O modules. Consider the rack position with respect to adjacent modules to ensure that you can easily access the I/O modules during maintenance.

Internal barrier I/O and IS Earthing modules can occupy any general-purpose rack position and can be adjacent to standard I/O module typeswithout compromising the 50 mm (2 in) physical separation requirement between safe and hazardous area field wiring.

Follow these guidelines when positioning I/O modules:

Group all internal barrier I/O modules in adjacent rack positions to simplify the installation.

Place the IS Earthing Module in a rack position that provides easy access for routine online maintenance.

Consider the IS Earthing Module's positioning relative to adjacent internal barrier I/O modules and cabinet bulkheads

If you plan to install standard I/O modules or the IS Earthing Module between a pair of internal barrier I/O modules, allow a minimum of two rack positions so that you can easily access the standard I/O or IS Earthing Module online without disturbing the adjacent I/O modules.

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