Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit - Manual (Page 27)

Rockwell Automation Publication 1408-UM001D-EN-P - September 2013 27
PowerMonitor 1000 Unit Features Chapter 2
• Current rotation, referenced to voltage Phase 1
–
-1 — Test not run; see wiring status for reason.
– 123 — Forward rotation (ABC).
– 231 — Forward rotation, 120 degrees displaced (BCA).
– 312 — Forward rotation, 240 degrees displaced (CAB).
– 132 — Reverse rotation (ACB).
– 213 — Reverse rotation, 120 degrees displaced (BAC).
– 321 — Reverse rotation, 240 degrees displaced (CBA).
– 4 — Invalid phase rotation (2 inputs wired with same phase).
Forward phase rotation is not required to pass wiring diagnostics. Before
changing wiring connections, refer to both the voltage / current rotation and
voltage/current inverted status to select the correct analog input.
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 34 .
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)
TIP The Troubleshooting mode of the power monitor lets you view
magnitude data.
Please refer to
Troubleshooting Mode on page 28 .