MCP3909RD-3PH1 Microchip Technology, MCP3909RD-3PH1 Datasheet - Page 4

• Manufacturer Part Number: MCP3909RD-3PH1
• Description: REF DESIGN MCP3909 3PH ENGY MTR
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-3PH1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: No
• Utilized Ic / Part: MCP3909, PIC18F2520, PIC18F4550
• Primary Attributes: 3-Ph, 220 VAC, In Case, LCD, USB, GUI
• Secondary Attributes: Opto-Isolated Interface for Safety
• Operating Voltage: 220 V
• Operating Current: 5 A
• Description/function: Energy Meter
• For Use With/related Products: MCP3909
• Lead Free Status / RoHS Status: Not applicable / Not applicable

MCP3909 / dsPIC33F 3-Phase Energy Meter Reference Design
Chapter 5. PC Software
Chapter 6. Meter Communications Protocol
Appendix A. Schematics and Layouts
Appendix B. Bill Of Materials (BOM)
Appendix C. Power Calculation Theory
DS51723A-page 4
5.1 Overview And Installation ............................................................................. 43
5.2 Establish Communication ............................................................................. 44
5.3 Basic Parameters Output Screen ................................................................. 45
5.4 Phase A/B/C Harmonic Output Screen ........................................................ 45
5.5 Distortion Rate .............................................................................................. 46
5.6 Harmonic Power ........................................................................................... 46
5.7 Energy Accumulation ................................................................................... 47
5.8 Calibration Step 1 - Reset All Calibration ..................................................... 47
5.9 Linearity Calibration ...................................................................................... 48
5.10 Apparent Power Calibration ....................................................................... 49
5.11 Phase Lag Calibration ................................................................................ 50
6.1 Introduction ................................................................................................... 51
6.2 Test Connection Command .......................................................................... 52
6.3 Total Data Request ...................................................................................... 52
6.4 Status Register ............................................................................................. 54
6.5 Harmonic Content Command ....................................................................... 54
6.6 Total Harmonic Distortion (THD) Command ................................................ 55
6.7 Start Energy Measurement Command ......................................................... 56
6.8 Stop Energy Measurement Command ......................................................... 56
6.9 Harmonic Power Command ......................................................................... 57
6.10 Calibrate Meter Voltage/current Command ................................................ 58
6.11 Calibrate Phase Lag Command ................................................................. 59
6.12 Calibrate Apparent Power Command ......................................................... 59
6.13 Calibrate Energy Pulse Command ............................................................. 60
6.14 Reset All Meter Calibration Values Command ........................................... 60
6.15 Calibrate Meter Constant (Energy Pulse Output Constant) ....................... 61
A.1 Introduction .................................................................................................. 63
A.2 Schematics And Pcb Layout ........................................................................ 63
C.1 Overview ...................................................................................................... 75
C.2 Synchronous Sampling And Quasi-synchronous Sampling ........................ 75
C.3 The Harmonic Analysis Algorithm Of Quasi-synchronous Sampling ........... 82
C.4 Measuring The Voltage/current Rms Value And Power Using Quasi-synchro-
C.5 Measuring Frequency .................................................................................. 87
C.6 Improving Measurement Precision Of Quasi-synchronous Sampling Algorithm
C.7 Measuring Secondary Parameters .............................................................. 91
C.8 Apparent Power Of Each Phase And Total Apparent Power ....................... 91
C.9 Power Factor Of Each Phase And Total Power Factor ............................... 91
nous Sampling Algorithm ........................................................................ 84
................................................................................................................. 89
© 2009 Microchip Technology Inc.