Option Description
F11 Enter Amp.
Factor
Enter the effect of the mechanical amplification on the vibration
magnitude resulting from an amount of imbalance. Enter a unitless value
between 0.0001 and 20.000. The default is 3.
Note
Amplification factors increase as the rotational frequency moves closer to
the critical frequency. Use an amplification factor of 3 if unknown.
F12 Enter
System Lag
Enter the system lag in degrees introduced by the equipment being
balanced. The default is 45.
Note
System lag is the difference between the angular location of the heavy
spot and the phase of the vibratory high spot. If system lag is unknown,
use 45 degrees when below first critical or 135 degrees when between first
and second critical. If running close to critical, use a number closer to 90
degrees.
5. Press F1 Calculate Solution or Enter.
The calculated solution displays as a continuous or discrete weight positions as
defined in Job Setup. The calculated solution, heavy, and light spots display.
6.
Press F9 Trial Weights Units to change the selected units.
7. Press F12 Insert to Trial Weight to send the calculated solution to the Trial Run Weight
entry, or press F7 Estimate Trial Wt. Calc. to exit and return to the calculation screen.
10.15.6 Calculate weight location around the outside rotor
circumference
The Circumference Conversion option lets you enter data to have the analyzer calculate the
weight location around the outside circumference of the rotor. Circumference Conversion is
useful when the rotor is enclosed and not easily accessible, such as when a small access
panel is located perpendicular to the rotor’s shaft. Angular locations can be converted to
let you measure around the rotor’s circumference.
Procedure
1.
From the Balance main menu, press ALT > F6 Calculator Mode > F8 Circum. Conv.
2. Set the following options as necessary.
Balance
MHM-97432 Rev 7 351
To Next Page
Loading...
Need help?
General
