Rockwell Automation 1440-SDM02-01RA XM-124 Standard Dynamic Measurement Module - Manuel (Page 110)

110 Rockwell Automation Publication 1440-UM001C-EN-P - May 2014
Chapter 4 Trends
Minimum Speed The lesser limit of the speed range in which records are collected in
the start-up/coast-down trend. This value must be less than the
Maximum Speed value. rpm
Start-up/Coast-down Trend Considerations:
• The module collects a start-up trend when the
machine speed rises through the Minimum
Speed + 8 rpm, and stops when the machine
speed crosses either the Minimum Speed or
the Maximum Speed. The module collects
data only when the machine speed is
increasing. It does not collect data if the
machine speed is constant or decreasing.
• The module collects a coast-down trend when
the machine speed falls through the
Maximum Speed - 8 rpm, and stops when the
machine speed crosses either the Minimum
Speed or the Maximum Speed. The module
collects data when the machine speed is
decreasing or increasing during a coast-down
trend (for example, a coast-down restart).
Maximum Speed The greater limit of the speed range in which records are collected in
the start-up/coast-down trend. This value must be greater than the
Minimum Speed value.
Status Shows the status of the trend data. Possible status values:
• Not collected - No trend data is currently
collected.
• Collecting - A trigger has occurred and data is
being collected.
• Collected - A trend has been saved to the buffer
and is available to view and upload.
View Trend Data Displays a plot of the collected trend data.
Reset Trigger Resets the trigger if Latch enabled is selected. This enables the
module to overwrite the previous trend data when the machine speed
crosses into the speed range.
Table 23 - SU/CD Trend Parameters
Parameter Name Description Values/Comments