Instruction Manual

Rockwell Automation Publication 1408-UM001D-EN-P - September 2013 41
PowerMonitor 1000 Unit Features Chapter 2
Commands
• Clear single min/max log record
• Clear min/max log
Related Functions
• Energy metering
• Demand metering
• Voltage, current and frequency metering
• Power metering
Load Factor Log
The power monitor maintains a 12-month record of demand and load factor.
Load factor is average demand divided by peak demand and is a measure of load
variability.
This function applies to catalog numbers 1408-EM2 and 1408-EM3.
Logged Parameters
The load factor log consists of 13 records, an in-process record for the current
month, and one record for the previous 12 months. The monthly records operate
in a circular or FIFO fashion. On a user-selected day each month, the current
record is pushed into the monthly record stack and cleared. Each record contains
the following data:
• Real power demand, peak and average, kW
• Real power load factor, percent
• Reactive power demand, peak and average, kVAR
• Reactive power load factor in percent
• Apparent power demand, peak and average, kVA
• Apparent power load factor in percent
Results
Load factor log records can be accessed only via communication.
Commands
• Store and clear current Load Factor Record
• Clear Load Factor Log