Rockwell Automation 1441-PEN25-Z Enpac 2500 Data Collector - Manual (Page 78)

78 Rockwell Automation Publication GMSI10-UM002D-EN-E - August 2012
Chapter 2 Setting Up Measurements
There are three ways to obtain a speed references.
• You can enter a constant for the speed.
• You can use the value in the Machine Speed column for a location on an
item in the Hierarchy Tree.
• You can use the value from a process measurement as the speed.
Press F1 to find out more information about each option in the Speed Reference
Frequency dialog.
You can set up the Linear to Rotational Frequency by double-clicking the
Definition column in the Linear to Rotational row in the Frequency Item pane.
This dialog allows you to set up a rotational frequency item based on a linear
speed. .
Press F1 to find out more information about each option in this dialog.
Setting Up Measurement
Definitions The topics in this section describe setting up different types of measurement
definitions in Emonitor for your data collector. The topics describe the way
Emonitor works with the Enpac 2500 for each different type of measurement
definition. These include answers to questions such as:
• How does Emonitor handle measurement units and alarms available in
Emonitor but not supported in the Enpac 2500?
• How many orders of magnitude and phase can the Enpac 2500 collect?
• How does the Enpac 2500 support collecting a spectrum when a
magnitude measurement is in alarm?
Emonitor combines measurement definitions when it creates a load file from a
list of measurement definitions. For example, Emonitor can combine the
measurement definitions at a location so that the data collector collects all the
measurements at one time. This makes data collection faster and more efficient
since you do not have to start each measurement individually. For more general
information on setting up measurement definitions, see the Emonitor online
help.