Rockwell Automation 1440-DYN02-01RJ XM Dynamic Measurement Module - Manuel (Page 153)

Publication ICM-UM002F-EN-E - March 2013 153
Glossary
NVS (Non-Volatile Storage)
NVS is the permanent memory of an XM module. Modules store parameters
and other information in NVS so that they are not lost when the module loses
power (unless Auto Save is disabled). Some implementations of NVS include
EEPROM and Flash.
online help
Online help allows you to get help for your program on the computer screen
by pressing F1. The help that appears in the Help window is context sensitive,
which means that the help is related to what you are currently doing in the
program.
orders
Multiples of the operating speed of a piece of equipment. The first order is the
operating speed. The second order is two times the operating speed, and so
on.
Period
The time required for a complete oscillation or for a single cycle of events. The
reciprocal of frequency.
Phase
A measurement of the timing relationship between two signals, or between a
specific vibration event and a keyphasor pulse.
Program mode
The XM module is idle. In Program mode, the signal processing/measurement
process is stopped. The status of the alarms is set to the disarm state to
prevent a false alert or danger status.
Run mode
In Run mode, the module collects measurement data and monitors each
measurement device.
settling time
The amount of time it takes a measurement to reach 90% of the final value
given a step change in the input signal.