Rockwell Automation 1408-EMxx PowerMonitor 1000 Unit - Manual (Page 52)

52 PowerMonitor 1000 Unit
Rockwell Automation Publication 1408-IN001E-EN-P - September 2013
Voltage, Current, and Frequency Metering
This function applies to catalog numbers 1408-TR1, 1408-TR2, and 1408-EM3.
Metered Parameters
The power monitor calculates and returns voltage, current, and frequency measurements
including these:
• L1, L2, L3, and Average Current, A
• L1-N, L2-N, L3-N, and Average L-N Voltage, V
• L1-L2, L2-L3, L3-L1, and Average L-L Voltage, V
• Frequency
• Percent Current Unbalance
• Percent Voltage Unbalance
Line-to-neutral voltage results are not provided for Delta and Open Delta wiring modes.
Voltage and current unbalance are calculated according to the following formula.
Setup
Only basic analog-input setup is required for power metering.
Results
Voltage, current, and frequency metering results may be viewed using the following methods:
• Web interface
• LCD screen
• Communication
• HyperTerminal communication tool
Related Functions
• Metering result averaging
• Configuration lock
Maximum Deviation from Average 100

Average
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