Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 210)

210 Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Chapter 8 Balancing Application
• The trial weight measurements are taken with a single trial weight
attached to the machine at one plane or the other. The trial weight
measurements are used to determine how the machine is affected by the
added weight. The ideal trial weight should produce either a 30 percent
change in amplitude or a 30 degree change in phase.
• The residual measurements are taken with the correction weight or the
correction weight and trim weights attached to the machine. The
correction weight should cancel out the initial unbalance. A residual
vibration measurement is taken to measure the remaining unbalance. Trim
weights are added to the machine to cancel out the vibration measured
during a residual measurement.
It is left to you to decide when the machine is sufficiently balanced.
Setting Up the Balancing
Parameters There are two screens for setting up the balancing parameters:
• the Balance Setup screen
• the Advance Setup screen
Both screens are described in this section.
Balance Setup Screen
The Balance Setup screen appears when you choose Balancing from the Main
Menu screen.
To edit an option in this screen, follow these steps.
1. Highlight the options and press the RIGHT ARROW key to open a
menu of choices.
2. Select the choice by pressing the arrow keys or type in a value using the
numeric key pad.