Energy Meter Manual

TOC-2
IM 77C01E01-01E
Chapter 4 Operation for Display of Measurement Items and Measurement Method
4.1 Measurement Items ............................................................................................................4-1
4.2 Switching Display Pattern ...................................................................................................4-2
Switching Display Pattern ...........................................................................................................4-2
Initial Values and Example Display Patterns ..............................................................................4-2
4.3 Displaying Measured, Instantaneous, and Maximum/Minimum Values ............................. 4-3
Example Display and Measuring Ranges of Active Power (Regenerative Power) ...................4-3
Example Display and Measuring Ranges of Reactive Power .................................................... 4-3
Example Display and Measuring Ranges of Apparent Power ...................................................4-3
Example Display and Measuring Ranges of Voltage ................................................................. 4-4
Example Display and Measuring Ranges of Current ................................................................. 4-4
Example Display and Measuring Ranges of Power Factor ........................................................ 4-4
Example Display and Measuring Ranges of Frequency ............................................................4-5
How to Switch between Instantaneous Value, Maximum Value, and Minimum Value .............. 4-5
4.4 Phase Switching for Voltage and Current ...........................................................................4-6
How to Switch the Phase for Single-phase Three-wire, Three-phase Three-wire and
Three-phase Four-wire (2.5 element) Systems .......................................................... 4-6
How to Switch the Phase for Three-phase Four-wire System ...................................................4-6
How to Read the Phase Indication Lamp ...................................................................................4-6
4.5 Displaying Energy Values ...................................................................................................4-7
Example Display and Measuring Ranges of Active Energy and Regenerative Energy ............4-7
Example Display and Measuring Ranges of LEAD Reactive Energy and LAG Reactive Energy .... 4-7
Example Display and Measuring Ranges of Apparent Energy ..................................................4-7
Operation for Energy Value Display ........................................................................................... 4-8
Optional Integrating Function......................................................................................................4-9
4.6 Resetting Measured Values ..............................................................................................4-10
Resetting Maximum and Minimum Values ...............................................................................4-10
Resetting Energy Value.............................................................................................................4-10
Canceling Reset Item Selection (Returning to the Measured Value screen without resetting) ...... 4-11
Reset Items and Details ............................................................................................................ 4-11
4.7 Demand Measurement (Optional Measuring Function) ...................................................4-12
Example Demand Display and Measuring Ranges ..................................................................4-12
Demand Measurement Procedure ............................................................................................4-12
Operation for Demand Measurement .......................................................................................4-13
Demand Alarm ...........................................................................................................................4-14
Example Demand Measurement ..............................................................................................4-14
Chapter 5 Troubleshooting
5.1 Error Display and Recommended Response ..................................................................... 5-1
5.2 Maintenance ........................................................................................................................5-2
Appendix
Appendix 1 Specifications of PR300 ......................................................................................... A-1
Measuring Function .................................................................................................................... A-1
Power Items and Equations ....................................................................................................... A-2
Input Specifications .................................................................................................................... A-2
Digital Input Specifications ......................................................................................................... A-3
Analog Output Specifications (additional output function) ........................................................ A-3
Pulse Output Specifications (additional output function) .......................................................... A-3
Demand Alarm Output Specifications (optional measuring function) ....................................... A-4
Communication Specifications ................................................................................................... A-4
Standard Performance ............................................................................................................... A-6
Safety and EMC Standards ....................................................................................................... A-7
Environmental Conditions .......................................................................................................... A-8
Mounting and Shape .................................................................................................................. A-8
Appendix 2 System Reset ........................................................................................................... A-9
Appendix 3 Parameter Map....................................................................................................... A-10
Appendix 4 Parameter List ....................................................................................................... A-12
Appendix 5 Alphanumeric Characters Table for ............................................................................
7-segment LED ............................................................................................................... A-16
Index
Contents