Rockwell Automation 1440-DYN02-01RJ XM Dynamic Measurement Module - Manuel (Page 75)

Publication ICM-UM002F-EN-E - March 2013 75
Configure XM Module in RSLogix 5000 Software Chapter 3
4. When finished, click one of these as needed.
• OK - Click to accept your edits and close the dialog box.
• Cancel - Click to close the dialog box without accepting your edits.
• Apply - Click to accept and apply your edits on any dialog and
continue editing.
Configure the Band Properties
The Band tab configures the bandwidth for each band measurement from the
Dynamic Measurement module. There are four sets of band measurement for
each channel.
Tachometer Rotations Enter the number of teeth on the buried shaft gear. Set the value between 1...65,535.
These parameters are dimmed in
asynchronous sampling.
Rotor Rotations Enter the number of teeth on the external shaft gear.
Gear Ratio Displays the relationship between the Tachometer
Rotations and the Rotor Rotations parameters.
The Tachometer Rotations and Rotor Rotations are
used to convert the speed measured by the speed
sensor to a shaft speed that is related by this gear
ratio. This is useful when the shaft of interest does not
have a speed sensor of its own.
When a gear ratio is configured, the synchronous
measurements are synchronized with the rotation of
the buried (internal) shaft. This includes the Vector, Not
1X, Sum Harmonics, and order-based Band
measurements. Synchronous averaging is also
synchronized with the internal shaft. However, the
Speed measurement is not affected by the gear ratio.
The Speed measurement always reflects the speed of
the shaft with the speed sensor (raw tachometer
speed divided by number of pulses per revolution).
This parameter applies only to synchronous
sampling.
In this field Values are Comments
TIP
The frequency ranges for each band may overlap. For example,
Band 1 Minimum Frequency is 500 Hz and Maximum Frequency
is 1500 Hz, and Band 2 Minimum Frequency is 1000 Hz and
Maximum Frequency is 3000 Hz.