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Rockwell Automation Publication 1440-UM001D-EN-P - September 2016 99
Configure the XM-124 Standard Dynamic Measurement Module Chapter 2
Ch1/Ch2 Spectrum/Waveform Status (XM Serial
Configuration Utility only) States whether a fault condition exists on the associated channel. If a
fault exists, the spectrum/waveform data is not always accurate.
These conditions can cause a fault:
• A transducer fault on the associated channel
• Sampling Mode set to ‘Synchronous’ and there is no tachometer
signal or there is a fault on the tachometer channel
• The machine speed changes too fast for the tracking algorithm to
keep up or if the frequency of FMAX goes outside the specified
criteria.
See Sampling Mode on page 72 .
Get Waveform Data Only (XM Serial
Configuration Utility only) Controls whether the spectrum is calculated by the Configuration
Utility or the Standard Dynamic Measurement Module. Check to upload only waveform data from the
module. The Configuration Utility calculates and
displays the spectrum using the collected waveform
data.
Clear to upload both the waveform and spectrum
data from the module.
States whether a fault condition (no tachometer signal or transducer
fault) exists on the tachometer channel. If a fault exists, the speed
value is not always accurate. Possible status values:
• No Fault
• Fault
Shows the measured average DC offset of the tachometer signal. This
value is compared with Fault High and Fault Low to determine whether
the tachometer is working properly. The tachometer must be enabled (Pulses Per
Revolution set to 1 or more).
Speed Value Shows the measured speed value.
Peak Speed Shows the greatest measured Speed Value (positive or negative) since
the most recent reset.
Acceleration Measured Value Shows the measured acceleration value. The acceleration is the rate of
change of the Speed Value.
4…20 mA Output A and B (XM Serial
Configuration Utility only) Shows the current output value in the range of 4…20 mA.
Status (XM Serial Configuration Utility only) States whether a fault condition exists on either channel. If a fault
exists, the magnitude and phase values are not always accurate. Possible status values:
• No Fault
• Fault
SMAX Magnitude The greatest peak magnitude around the orbit. SMAX Measurement Requirements:
• The transducers on channel 1 and 2 must be
similar.
• The transducers must be installed around the
machine shaft, in the same radial plane, 90°
apart (vertically and horizontally, for example).
• Both channels must be configured for the same
filtering and Full Scale settings.
• The Transducer Nominal Sensitivity parameter
must be set for displacement (mils or μm).
• We recommend that the tachometer is enabled
(Pulses Per Revolution set to 1 or more) and a
tachometer signal present.
• Both channels must be set to either Standard or
Thrust Position Measurement Mode.
SMAX Phase The phase at which the greatest peak magnitude occurs around the
orbit.
Table 20 - Monitor Data Parameters (Continued)
Parameter Name Description Values/Comments
XM Configuration
Utility EDS File
Speed Status Transducer 3 Status
XM Configuration
Utility EDS File
DC Bias (Gap) Transducer 3
Measured DC Bias