Rockwell Automation 1441-DYN25-MBAL Balancing Extension Module for the Dynamix 2500 - Manual (Page 22)

22 Rockwell Automation Publication 1441-UM004A-EN-P - May 2011
Chapter 2 Balancing Extension Module
Table 2 - Balance Extension Module Parameters
Parameter Description Value
Num. of Planes Determines whether single-plane or two-plane balancing is
required. A good rule-of-thumb is the rotor’s width-to-diameter
(W/D) ratio. The W/D ratio is the width (excluding shaft length)
of the combine rotors divided by their diameter. The following
chart can be used to help determine whether to use one- or
two-plane balancing. 1
2 (default)
Num. Transducer Determines the number of transducers to be used. Connector A and B
Sensor (transducer) Type Vibration measurement type.
The type of vibration measurement depends on the type of
transducer used, for example, accelerometer, velocity pickup, or
proximity probe. This is required to establish integration
requirements for the FFT calculation.
Typically, accelerometers are used to perform velocity
measurements for field balancing procedures.
A Manual Entry option is available at the end of the list for
manual balancing data entry, letting you to review and change
balancing run data. If selected, you are prompted to manually
enter the running speed, vibration magnitude, and phase angle
for the balancing runs.
Accel (G) (default)
Vel IPS
Vel mm/s
Disp um
Disp mil
Manual Entry
Display Units Specify the unit of measurement for the select transducer type.
The options available in the list vary depending on the
transducer selected. EU
Weight Units Defines the units used in balancing.
Specify the units of measurement used for your trial, correction,
and trim weights.
g
kg
oz (default)
lb
EU
width
width
width
diameter
diameter
diameter
W/D RATIO 1-PLANE 2-PLANE
Less than 0.5
More than 0.5
but less than 2
More than 2
0 - 1000 RPM
0 - 150 RPM
0 - 100 RPM
Above
1000 RPM
150 - 2000
RPM or above
70% of 1st
critical
Above 100
RPM to 70%
of 1st critical