Manual

128 Rockwell Automation Publication 1426-UM001F-EN-P - November 2013
Chapter 6 Logging
Time-of-use (TOU) Log
The PowerMonitor 5000 unit maintains records of energy and demand
organized by times of use defined by the user.
In the PowerMonitor 5000 model, there are three time-of-use (TOU) logs, one
each for real, reactive and apparent energy, and demand. Within each log, energy
consumption and peak demand are recorded into off-peak, mid-peak and on-
peak categories. The days and times that define the mid- and on-peak periods are
user selectable. All times of use not defined as mid- or on-peak are considered off-
peak.
TOU Log Results
Time-of-use log records can be retrieved from the PowerMonitor 5000 web page
or ftp server. The power monitor generates the log file at the time of the request.
Records can also be retrieved individually or sequentially by using the data table
interface.
File Name
The log file is named Time_of_Use_Log.csv.
Logged Parameters
The TOU log consists of 14 records. The first is a header naming the logged
parameters. The second is an active record for the current month. The remaining
records are static and store data for each of 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 stack of monthly records and, if the
stack is full, the oldest is deleted. Each record is a structure of REAL elements
containing the following parameters:
• TOU_Record_Number
• TOU_ Start_Date
• TOU_End_Date
• Off_Peak_GWh_Net
• Off_Peak_kWh_Net
• Off_Peak_kW_Demand
• Mid_Peak_GWh_Net
• Mid_Peak_kWh_Net
• Mid_Peak_kW_Demand
• On_Peak_GWh_Net
• On_Peak_kWh_Net
• On_Peak_kW_Demand
• Off_Peak_GVARh_Net