Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, Firmware rev. 3.0 or LATER - Manual (Page 29)

Publication 1404-UM001F-EN-P - November 2009 29
Powermonitor 3000 Unit Operations Chapter 3
Metering Accuracy Class
In the Selftest/Diagnostic Results table, element 26 is a read-only
parameter that indicates the revenue metering accuracy class of the
master module. If this element contains the value 0, the master
module meets ANSI C12.16 and EN61036 Class 1 requirements for
accuracy. If this element contains the value 1, the master module
meets ANSI C12.20 Class 0.5, EN60687 Class 0.5, and Canadian
standard CAN3-C17-M84 requirements for accuracy. If this element
contains the value 2, the master module meets ANSI C12.20 Class 0.2,
EN60687 Class 0.2, and Canadian standard CAN3-C17-M84
requirements for accuracy. The revenue metering accuracy class is
also indicated on the side of the master module and can be accessed
via the display module
(DISPLAY > STATUS > ACCURACY CLASS).
Expressing Metered Data on the Display Module
The display module displays scaled metered data in its basic units,
such as volts, amps, watts. Prefixes such as K or M are used to denote
multipliers of 1,000 (kilo-) and 1,000,000 (mega-). The display module
expresses power factor as a percentage, with a positive value
indicating leading and a negative value indicating lagging.
The display module displays values to a maximum precision of five
significant digits.
Viewing Metered Data by Using the Display Module
The display module makes it easy to view the metering data produced
by the power monitor.
Refer to display module functionality later in this chapter for
information on use of the display module.
Metering Accuracy Class
Model Class 1 Class 0.5 Class 0.2
M4 Standard Not Available Not Available
M5 Standard Optional
M6 Standard Optional
M8 Standard Optional