Siemens TX-I/O - Common Ground Requirement; Module Insertion Required for Proper Grounding; Third Party Transformer Grounding; MEC Service Box Grounding Modification

TX-I/O Quick Start
Common Ground Requirement
All devices not isolated by a TIE or isolation transformer must be connected to
the same grounding point.
Caution:
TX-I/O components require a system neutral with single
point earth ground. Do not connect these components
to a floating system neutral.
Module Insertion Required for Proper Grounding
All measuring/neutral terminals are connected in the plug-in I/O module, not in
the terminal base. When the I/O module is removed, these terminals are not
connected.
Third Party Transformer Grounding
If you are powering TX-I/O components from a third-party transformer, connect
the transformer neutral to the building approved earth ground.
MEC Service Box Grounding Modification
The MEC service box has a floating neutral system, which must be connected to
the building approved earth ground for use with TX-I/O components, as follows:
MEC Service Box Common Grounding
2 Siemens Building Technologies, Inc