Rockwell Automation 1441-DYN25-Z Dynamix 2500 Data Collector User Manual
Page 93
Rockwell Automation Publication 1441-UM001B-EN-P - September 2012
93
Setting Up Measurements Chapter 3
• A full scale value of 10,000 can be a problematic if you want to enter a very
large or very small value for the numeric measurement. For example, you
can not enter a value greater than the full scale value. If you enter a value
that is very small compared to the full scale, the Dynamix 2500 data
collector may round the value off. If you enter 0.01 with a full scale value of
10,000, the Dynamix 2500 data collector stores it as a 0 (zero).
Temperature Measurements
You set up a temperature measurement definition by setting Data Type to
Numeric and Units to rpm, CPM, or deg. C.
Follow these steps to set up temperature measurements.
1.
Set up the temperature transducer in the Transducer Calibration dialog
box with Input type set to DC Coupled and Units set to deg. F or deg. C.
Make sure you enter the Calibration value that converts the voltage to a
temperature.
2.
Set up the collection specification to include a Signal detection of RMS.
Machine Speed (rpm) Measurements
You set up a tachometer measurement definition by setting Data Type to
Numeric and Units to rpm, CPM, or Hz.
Follow these steps to set up machine speed measurements.
1.
Go to the Transducer Calibration screen.
2.
Set the Input type to ICP Accel for either the internal laser tachometer or
an external TTL device, for example, entach laser sensor, an optical trigger,
or a strobe light with TTL output.
3.
Set the Input type to AC Coupled or DC Coupled if your speed sensor has
an AC or DC voltage signal proportional to speed.
4.
Set Units to rpm, CPM, or Hz.
Make sure you enter the Calibration value that converts the voltage to
speed.
5.
Set up a Collection Specification with Transducer set to the tachometer
transducer you set up above, Window set to Rectangular, and Signal
detection set to None.
Do not fill in any fields in the Resolution area or the Averaging area of the
dialog box.