Instruction Manual

Rockwell Automation Publication 1441-UM006A-EN-P - May 2011 29
Run Up/Coast Down Extension Module Chapter 2
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.
.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.
LF Cutoff Determines whether to apply a low frequency filter (0.3 times the running
speed) to the data.
Off
On
Detection Sets the signal detection and scaling display for the table:
• 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
PkPk
Num Traces Sets the number of traces or order tracks to be displayed in the table.
Your selection determines the available number of Trace Order parameters.
1
2
Trace Order #1-#4 The order numbers to be tracked and displayed in the table.
This value cannot exceed the Max No Orders value set in the RUCD Setup
screen.
See Run Up/Coast Down Setup Parameters on page 18
.
.001…166 orders
Table 6 - Table Parameter Descriptions
Parameter Name Description Values/Comments