Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit User Manual
Page 42
42 PowerMonitor 1000 Unit
Rockwell Automation Publication 1408-IN001E-EN-P - September 2013
Magnitude and Phase Angle
The power monitor continually returns voltage and current magnitude and phase angle data.
This data may be used to construct a phasor diagram, and in addition to the diagnostics
parameters, to troubleshoot wiring issues. The following exceptions apply.
•
Magnitude data is not returned by models 1408-EM1 and -EM2
•
Current phase angle 2 always returns 0 in open-delta wiring mode
Phase angles are consistent with the four-quadrant power metering diagram.
Refer to Power Metering on page 50
.
Setup
Basic analog setup is required. In addition, a system power factor should be selected. The ranges
are as follows:
•
Low (52…95% lag, default setting)
•
High (85 lag …98% lead)
•
Leading (97 lag …89% lead)
Results
Wiring diagnostics results may be viewed using the following methods:
•
Web interface
•
LCD screen
•
Communication
•
HyperTerminal communication tool
Commands
•
Perform wiring diagnostics
•
Test wiring connections (LCD screen menu)
TIP
The Troubleshooting mode of the power monitor lets you view magnitude data.
.