Rockwell Automation 1440-VSE02-01RA XM-122 gSE Vibration Module - Manual (Page 93)

Publication GMSI10-UM013D-EN-P - May 2010
Configuration Parameters 83
Triggered Trend Parameters The XM-122 module can collect a triggered trend. A triggered trend is a
time-based trend that is collected when a relay on the XM module is activated,
or the module receives a trigger event.
Once the triggered trend is configured, the XM-122 continuously monitors the
trended measurements. When a trigger occurs, the XM module collects
additional data as specified by the Post Trigger parameter. The XM-122 can
also store the spectrum or waveform at the time of the trigger.
The XM-122 can only store one triggered trend. Unless the triggered trend is
latched, the trend data is overwritten with new data when the next trigger
occurs.
The triggered trend parameters define the trend data that is collected by the
module. Use these parameters to select the measurements included in the
IMPORTANT
The 4-20 mA outputs are either on or off. When they are
on, the 4-20 mA output overshoots the 4 and 20mA limits
by 10% when the measurement exceeds the minimum and
maximum range. This means the minimum current
produced is 3.6 mA and the maximum current produced is
22 mA.
When the 4-20 mA outputs are off, the 4-20 mA output
produces a current approximately 2.9 mA. The 4-20 mA
outputs are off under the following conditions:
• The 4-20 mA outputs are set to "Disable" (see Enable
above).
• The module is in Program mode.
• A transducer fault or tachometer fault occurs that affects
the corresponding measurement.