Demand calculation logic – Rockwell Automation Energy Management Accelerator Toolkit Quick Start User Manual
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Rockwell Automation Publication IASIMP-QS016C-EN-P - October 2014
Appendix C Energy Electric Add-On Instructions
Demand Calculation Logic
The following logic is included in the Energy_Electric_Digital, Energy_Electric_Analog, and Energy_Electric_PM_Status
Add-On Instructions for calculating electric demand, Val_Demand_Electric.
The end-of-demand interval is based on the Set_End_of_Demand_Interval_Type that is set when configuring the Add-On
Instruction.
• The first rung sets and runs the internal PLC timer based on the Set_Demand_Interval tag minute setting.
• The second rung sets and runs the Demand_Interval_Exceeded timer in case the end-of-demand utility contact or
master end-of-demand command is not seen by the controller.
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