Rockwell Automation 1441-DYN25-MBAL Balancing Extension Module for the Dynamix 2500 - Manual (Page 53)

Rockwell Automation Publication 1441-UM004A-EN-P - May 2011 53
Balancing Extension Module Chapter 2
10. On the machine, carefully attach the precise weight at the precise angle and
radius specified.
Balancing results depend greatly on the precision of your measurements
and actions.
Perform Trial Run 1 on Both Planes
1. With the trial weight securely attached to the machine, start the machine
and bring it back up to the same speed used with the reference runs (initial
runs).
2. Press Enter.
You are prompted to verify the transducer is attached to the bearing closest
to Plane 1.
3. Verify your transducer is attached and press the Yes function button.
The Trial Run 1 – Plane 1 screen appears.
If two transducers are used for the balancing, both planes appear
simultaneously. The Trial Run 1 – Plane 1 screen shows vibration
magnitude and phase readings for Plane 1 with the trial weight on Plane 1.
For accurate balancing efforts, these readings should satisfy the 30/30 rule
(from the reference run, the trial weight causes a 30% change in
magnitude, or a 30 ° change in phase, or both).
4. From the Trial Run 1 – Plane 1 screen, press Enter to proceed.
You are prompted to verify the transducer is attached to the bearing
nearest Plane 2.
5. Verify the transducer and press OK.
The Trial Run 1 – Plane 2 screen appears.
The Trial Run 1 – Plane 2 screen shows vibration magnitude and phase
readings for Plane 2 with the trial weight on Plane 1.
6. Press Enter to proceed.
You are prompted if the trial weight is remaining attached to Plane 1.
Trial weights are normally temporary, and removed before one final
correction weight is attached. However, at times the trial weight must be
permanently attached for safety purposes, and is therefore left on the
machine.
Typically, select No, as you typically plan to remove the temporary trial
weight (or select Yes if you plan to leave the trial weight attached).