Run-Down Test; Example Of A Smooth Run-Down Diagram (Segment Size ~3 Cm) - Honeywell FlexLine SmartServo 954 Service Manual

MAINTENANCE

Run-down test

Entity name
Run down start position
Run down stop position
Run down
Figure 9-4
Part No.: 4417340 Revision 1
With the run-down test one can estimate the state of the bearings and
the presence of obstructions over a certain range. The command will fill
data arrays containing maximum and minimum measured frequency
over 140 segments. Those segments are equally distributed between
the start and stop position of the test. So, the segment size will be
smaller when the range is smaller (with a minimum of 2 cm). By
decreasing the range, one can zoom in on a certain part of the range.
Value Range Default Value Explanation
The result of the run-down test can only be viewed graphically by the
diagram viewer in Engauge (Run Down Diagram).

Example of a smooth run-down diagram (segment size ~3 cm)

Figure 9-4 shows an example of a smooth run-down test over a small
distance. Because of the small segment size, a 0.34m pattern is visible
which is caused by the drum circumference (drum unbalance).
Service Manual
954 SmartServo FlexLine
Starting position of the run-down
27.0 m
test. The displacer will go up and
stop at this position or at motor limit
high, whichever comes first.
Stop position of the run-down test.
0 m
The run-down test will be
terminated at this position or at the
product interface, whichever comes
first.
Starts the run-down test. When the
run-down test is terminated, the
gauge will perform the default
operation.
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