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Alignment condition in both vertical and horizontal directions
The coupling diagnosis is given in the form of gap and offset values in both
vertical and horizontal directions. The true gap being the difference in gap
between the coupling faces top to bottom (vertical) or side to side (horizontal) at
the diameter that was entered. Offset is the distance between two centerlines at
the transmission plane of the coupling.
The foot correction values are shimming or move values, and are either positive
or negative. In vertical results, positive foot values indicate raising machine foot
by the displayed value. In horizontal results, positive foot values indicate moving
the machine away from the viewer by the displayed value.
Note
Sign convention
Gap is positive when open at top or side away from viewer. Offset is positive
when machine to be moved is higher or further from viewer.
Positive foot correction values indicate that movable machine has to be moved
upwards (add shims) or away from the viewer.
Negative foot correction values indicate that movable machine has to be
moved downwards (remove shims) or towards viewer.
If all four coupling values are within tolerance, you do not need to align the
machines. If no in-house standards or specications from the coupling or
machine manufacturer are available, the alignment condition LED and the
tolerance bar provide a tolerance check based on the built in tolerance tables.
If the measured alignment falls within acceptable tolerance, the LED turns
yellow. The LED turns green when the measured alignment falls within excellent
tolerance. The LED turns orange when alignment is out of tolerance. A worsening
of the misalignment results in the LED turning red.
Horizontal shaft alignment
Diagnose
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