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Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Chapter 10
Operate the Module
SpeedOutofSyncHigh
Synchronous Sampling Warning
Set if the speed is too high to perform synchronous re-sampling with verified accuracy at all order frequencies up to
FMAX.
When speed exceeds the calculated maximum speed for the configuration, the accuracies of the measurements
degrade with the highest frequencies affected first. Lower-order accuracies erode as the speed increases further
above maximum.
Tag is applicable when:
• This Speed Out of Sync bits are managed only when a synchronous FFT is being calculated.
• A synchronous FFT is only calculated if:
SpeedOutof1xMagSync
Synchronous Sampling Warning
Set when the speed exceeds 2x the calculated maximum speed for the configuration. Above this speed, the accuracy
of the measurement at the first order can be reduced.
See tag "SpeedOutofSyncRange" for information on when this tag is applicable.
SpeedOutofSyncLow
Synchronous Sampling Warning
Set if the speed is too low to perform synchronous re-sampling.
See tag "SpeedOutofSyncRange" for information on when this tag is applicable.
Tag (continued)
Description (if = 1)
On the same channel (one or more)
Alternate Path Sample Mode
on the Filters Page is set to
Synchronous
AND
Signal Source of the FFT Page is set to Alternate
Path
OR
Signal Source of the FFT Bands Page is set to
Alternate Path
OR
Signal Source of the Demand Page is set to
Alternate Path