Rockwell Automation 1441-DYN25-MRUC Run Up Coast Down Extension Module for the Dynamix 2500 - Manual (Page 23)

Rockwell Automation Publication 1441-UM006A-EN-P - May 2011 23
Run Up/Coast Down Extension Module Chapter 2
5. When you are finished, press F3 (Display) to display the Bode plot.
See Display the Bode Plot on page 24 .
Table 4 - Bode Plot Parameters
Parameter Description Values/Comments
Start Spd (RPM) Sets the start speed of the recorded data for the Bode plot.
This defaults to the Start Spd value set in the RUCD Setup screen. See Table 2
on page 18.
10…3600 rpm
Stop Spd (RPM) Sets the stop speed of the recorded data for the Bode plot.
This defaults to the Stop Spd value set in the RUCD Setup screen.
See Run Up/Coast Down Setup Parameters on page 18 .
10…3600 rpm
Spacing Controls the spacing between collected spectra.
• Δ rpm is a fixed speed change between spectra.
• % Δ rpm is a percentage speed change between spectra.
• Δ Time is a fixed time interval between spectra.
• Δ rpm + Δ Time is a combination of speed and time interval settings. If
speed stops changing then spectra are calculated using the Time Interval
value.
• % Δ rpm + Δ Time is a combination of speed and time interval settings.
If speed stops changing then spectra are calculated using the Time
Interval value.
Δ rpm
% Δ rpm
Δ Time
Δ rpm + Δ Time
% Δ rpm + Δ Time
Your selection affects the Speed Interval
and Time Interval settings.
Speed Interval (rpm) Sets the speed interval used in calculating FFT spectra.
This parameter not used when Spacing is set to Δ Time.
1…240 rpm or % rpm
Time Interval (sec) Sets the time interval used in calculating FFT spectra.
This parameter is not used when Spacing is set to Δ rpm and % Δ rpm.
Enter a value from .001…604800 s
Display Units Sets the Y-axis units.
The available units depends on the transducer used to collect data.
See Run Up/Coast Down Setup Parameters on page 18 .
Accel (g)
Accel (m/s 2 )
Accel (m/s
2
)
Vel (mm/s)
Vel (ips)
Disp (mils)
Disp (µm)
LF Cutoff Determines whether to apply a low frequency filter (0.3 times the running
speed) to the data. Off (default)
On
Detection Sets the signal detection and scaling display for the Bode plot:
• Peak - Measured RMS value multiplied by the square root of two (1.4142).
• Pk-Pk - Measured RMS value multiplied by two times the square root of
two (2.8284).
• RMS - Root mean squared signal level of the input signal.
RMS
Peak (default)
PkPk
Y-axis Sets the y-axis scaling on the Bode plot:
• Linear - The plot grid centers are linearly spaced in Y between the centers
of the first and last grid.
• Log - The plot grid centers are logarithmically spaced in Y between the
centers of the first and last grid.
Linear (default)
Log