Hello,
I know this post is very old, but I found the following information on a PTC case.
| Title | Error “The Model is disconnected” when working with assembly in Pro/ENGINEER, Creo Elements/Pro and Creo Parametric. |
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| Description | - Error "The Model is disconnected" appeared when working with assembly.
- Regeneration icon as changed to a crossed out D.
- Regeneration manager replaced by a symbol of a D that has been X'ed over.
- In the stop light for regeneration status, there is now a "D" with an "X" through it .
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| Applies To | - Pro/ENGINEER all releases
- Creo Elements/Pro 5.0 all datecodes
- Creo Parametric 1.0 all datecodes, 2.0 all datecodes
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| Cause | - One or more components are not fully constrained in the assembly.
- Connections are not completed for some reason.
- Assembly movement are running outside the limits defined at the connection
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| Resolution | - Check / Redefine assembly component connections
- Alternatives:
- Set the configuration option enable_implied_joints as no
- Warning message (x'D) will not appear in the regeneration display
- Under constrained components will be treated as moveable (i.e. implied joints)
- File > Prepare > Model Properties > Mechanism and change the Characteristic Length to a bigger value and then regenerate
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Hope it helps anyone!