Rockwell Automation 1440-DYN02-01RJ XM Dynamic Measurement Module - Manuel (Page 154)

154 Publication ICM-UM002F-EN-E - March 2013
Glossary
signal detection
Defines the method of conditioning or measuring a dynamic input signal. Peak
(0 to the peak voltage), Peak-Peak (minimum peak to maximum peak), and
RMS (square root of the mean of the square of the values) are the most
common methods of signal detection.
spectrum measurement
A measure of amplitude versus frequency, typically vibration for monitoring
systems. Spectrum measurements are useful for identifying the contribution of
individual components (bearings, fans, gears) It is much easier to separate
elements of vibration in frequency domain that in the time domain.
transducer
A transducer is a device for making measurements. These include
accelerometers, velocity pickups, displacement probes, and temperature
sensors.
virtual relay
A virtual relay is a non-physical relay. It has the same capabilities (monitor
alarms, activation delay, change status) as a physical relay only without any
physical or electrical output. The virtual relay provides additional relay status
inputs to a controller, or PLC.
XM configuration
XM configuration is a collection of user-defined parameters for XM modules.
XM node address
The XM Bus network can have as many as 64 devices connected to it. Each
device on the XM Bus network must have a unique XM node address between
0 and 63. Node address 63 is the default used by uncommissioned devices and
node address 0 is reserved for the 1440-ACNR adapter.