Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER User Manual
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Publication 1404-UM001F-EN-P - November 2009
Chapter 3 Powermonitor 3000 Unit Operations
Metering Options
Configuration parameters RMS Result Averaging, RMS Resolution and
Frequency Averaging allow you to make choices to fit the power
monitor more closely to your application needs. The default settings
are to average 8 RMS and frequency calculations, providing a
smoother result, and to sample at a high rate, providing greater
accuracy where significant harmonics are present. Refer to the
discussion of these parameters in Metering Functionality at the
beginning of this chapter.
Configurable Energy Counter Rollover
You may configure the number of digits (range 4…15) at which
energy values roll over to zero.
Configure this setting by using the display module or by writing to the
Advanced Device Configuration Parameters table on
Advanced Metering Options
Some applications require very frequent updates of a limited set of
metering data. In the M8 model, you may de-select certain metering
functions to improve the update rate of the power monitor in its
remaining metering and communication functions. With this feature
selected, de-selected metering calculations return values of 0 in the
appropriate data table elements.
You may set the advanced metering selection only through
communication, by performing a table write to the
The display module does not support this configuration. This table
exists only in the M8 model and consists of 10 integer elements as
follows:
•
Password: A valid password is required
•
Meter result set: 0 calculates all metering results (default); 1 is
Transducer mode; 2 is Energy Meter mode
•
Reserved elements: The remaining elements must be 0
•
Transducer mode: The power monitor calculates only volts,
amperes, watts, VARs, VA, true power factor (per phase and
total) and frequency
•
Energy Meter mode: The unit calculates only average voltage,
average amperes, total watts, frequency and net kWh