MCP3909 3-Phase Energy Meter Reference Design Using PIC18F2520 (MCP3909RD-3PH1)

Contact Local Microchip Sales Office for Availability

The MCP3909 3-Phase Energy Meter Reference Design is a fully functional Flash MCU based 3-phase energy meter. The meter comes populated with components for a 220V, 5(10)A system complete with plastic IEC compliant energy meter case. The case contains high voltage line and load screw terminals for direct connection to mains voltage or to energy meter calibration equipment. The 3-phase energy meter calculations are Flash based using 7K of PIC18F2520 program memory. The calculations include active energy pulse output, active power, apparent power, RMS current, and RMS voltage. There are over 100 serially accessible output registers containing power quantities, in Flash. For calibration, there are registers including offset, gain, phase, and LSB correction for all power and energy quantities, in Flash. All registers are accessible through RS-232 and USB.

The calibration and correction registers can easily be moved from Flash to EEPROM using a simple ‘store’ command for end user configurable write cycle times.

The analog conversion uses the wide dynamic range 16-bit ADCs MCP3909, which are sampled at 128 times per line cycle. The calculations are all interrupt driven to ensure ‘Zero-Blind’ measurements for all power quantities per line cycle.

The system also includes a Phase Lock Loop circuit for line cycle sample lock.

The system is easy to use, command driven, and offers ‘mode’ registers for features such as positive only energy accumulation mode or no-load threshold mode. A 64-bit wide active energy register is used for long term energy accumulation. Phase calibration for CT non-linearity correction is included.

In addition to the power calculation engine using MCP3909 + PIC18F2520, a second communications module is included with the system. The included communications module is the PIC18F4550 USB Interface Module, which allows for meter evaluation and calibration using the “3-Phase Energy Meter Software” running on Windows XP or Windows 2000. The PIC18F4550 USB interface module also includes an LCD for additional energy meter firmware design.

Возможности

    • Fully functional 3-phase energy meter using MCP3909 and 7K of PIC18F2520 program memory
    • Active Energy Pulse Output, Active Power, Apparent Power, RMS current and RMS voltage calculation
    • 62 serially accessible output registers containing power quantities, in Flash
    • 54 serially accessible calibration registers, including offset, gain, phase, and LSB correction for all power and energy quantities, in Flash
    • Easy to use ‘Store’ command pushes calibration registers to EEPROM for user configurable write cycles
    • High accuracy 16-bit ADCs MCP3909, sampled at 128 times per line cycle
    • ‘Zero-Blind’ measurements for all power quantities per line cycle
    • Phase Lock Loop circuit for line cycle sample lock
    • Positive Only Energy accumulation mode
    • 64-bit wide active energy register for long term energy accumulation
    • Single point phase calibration for CT non-linearity correction
    • Multi-point phase correction (coming soon)
    • Automatic calibration mode using for high accurate phase locked calibration readings
    • Easy to use command driven system
    • USB data access for real time display of power measurement, all three phases
    • Automated meter calibration using PC software with easy to understand user prompts
    • Programmable creep threshold for no-load threshold calibration
    • IEC compliant power circuit to ensure meter has power from any single phase
MCP3909 3-Phase Energy Meter Reference Design Using PIC18F2520 MCP3909RD-3PH1

Используемые компоненты

Производитель: Microchip Technology Inc.
Наименование
Производитель
Описание Корпус/
Изображение
Цена, руб. Наличие
PIC18F2520-I/SO
PIC18F2520-I/SO
Microchip Technology Inc.
Арт.: 181548 ИНФО PDF AN RD
Доступно: 48858 шт. от: 303 руб.
8BIT FLASH MCU, 18F2520, SOIC28; Series:PIC18F; Memory Size, Flash:32KB; EEPROM Size:256Byte; Memory Size, RAM:1536Byte; I/O lines, No. of:25; ADC Inputs, No.…
PIC18F2520-I/SO 303,00 от 12 шт. 260,00 от 27 шт. 238,00
3483 шт.
(на складе)
45375 шт.
(под заказ)
PIC18F2520-E/SO
PIC18F2520-E/SO
Microchip Technology Inc.
Арт.: 300621 ИНФО PDF AN RD
Доступно: 4160 шт.
Выбрать
условия
поставки
8-bit Microcontrollers - MCU 32KB 3968 RAM 25I/O
PIC18F2520-E/SO
4160 шт.
(под заказ)
Выбрать
условия
поставки
PIC18F2520-E/SP
Microchip Technology Inc.
Арт.: 300623 PDF AN RD
Доступно: 3281 шт.
Выбрать
условия
поставки
8-bit Microcontrollers - MCU 32KB 3968 RAM 25I/O
PIC18F2520-E/SP
3281 шт.
(под заказ)
Выбрать
условия
поставки
PIC18F2520-I/SP
PIC18F2520-I/SP
Microchip Technology Inc.
Арт.: 305096 PDF AN RD
Доступно: 28309 шт. от: 358 руб.
8-bit Microcontrollers - MCU 32KB 3968 RAM 25I/O
PIC18F2520-I/SP 358,00 от 10 шт. 307,00 от 21 шт. 282,00
567 шт.
(на складе)
27742 шт.
(под заказ)
PIC18F2520-E/ML
PIC18F2520-E/ML
Microchip Technology Inc.
Арт.: 670096 PDF AN RD
Доступно: 1649 шт.
Выбрать
условия
поставки
MICROCONTROLLER MCU, 8 BIT, PIC18, 40MHZ, QFN-28
PIC18F2520-E/ML
1649 шт.
(под заказ)
Выбрать
условия
поставки
PIC18F2520T-I/SO
Microchip Technology Inc.
Арт.: 869783 PDF AN RD
Доступно: 18433 шт.
Выбрать
условия
поставки
8-bit Microcontrollers - MCU 32KB 3968 RAM 25I/O
PIC18F2520T-I/SO
18433 шт.
(под заказ)
Выбрать
условия
поставки
PIC18F2520-I/ML
PIC18F2520-I/ML
Microchip Technology Inc.
Арт.: 1028963 PDF AN RD
Доступно: 18765 шт.
Выбрать
условия
поставки
8-bit Microcontrollers - MCU 32kBF 1536RM 25I/O
PIC18F2520-I/ML
18765 шт.
(под заказ)
Выбрать
условия
поставки
PIC18F2520T-I/ML
Microchip Technology Inc.
Арт.: 1180044 PDF AN RD
Доступно: 5560 шт.
Выбрать
условия
поставки
8-bit Microcontrollers - MCU 32KB 3968 RAM 25I/O
PIC18F2520T-I/ML
5560 шт.
(под заказ)
Выбрать
условия
поставки
PIC18F2520-E/SO032
Microchip Technology Inc.
Арт.: 1308854 AN RD
Поиск
предложений
PIC18F2520-E/SO032
-
Поиск
предложений
PIC18F2520-I/SOC01
Microchip Technology Inc.
Арт.: 1308855 AN RD
Поиск
предложений
PIC18F2520-I/SOC01
-
Поиск
предложений
PIC18F2520T-E/ML051
Microchip Technology Inc.
Арт.: 1308856 AN RD
Поиск
предложений
PIC18F2520T-E/ML051
-
Поиск
предложений
PIC18F2520T-E/ML053
Microchip Technology Inc.
Арт.: 1308857 AN RD
Поиск
предложений
PIC18F2520T-E/ML053
-
Поиск
предложений
PIC18F2520T-E/SO
Microchip Technology Inc.
Арт.: 1308858 AN RD
Поиск
предложений
PIC18F2520T-E/SO
-
Поиск
предложений
PIC18F2520T-E/SO021
Microchip Technology Inc.
Арт.: 1308859 AN RD
Поиск
предложений
PIC18F2520T-E/SO021
-
Поиск
предложений
PIC18F2520T-E/SO032
Microchip Technology Inc.
Арт.: 1308860 AN RD
Поиск
предложений
PIC18F2520T-E/SO032
-
Поиск
предложений
PIC18F2520T-E/SO043
Microchip Technology Inc.
Арт.: 1308861 AN RD
Поиск
предложений
PIC18F2520T-E/SO043
-
Поиск
предложений
PIC18F2520T-E/SOC06
Microchip Technology Inc.
Арт.: 1308863 AN RD
Поиск
предложений
PIC18F2520T-E/SOC06
-
Поиск
предложений
PIC18F2520T-I/ML050
Microchip Technology Inc.
Арт.: 1308864 AN RD
Поиск
предложений
PIC18F2520T-I/ML050
-
Поиск
предложений
PIC18F2520T-I/ML052
Microchip Technology Inc.
Арт.: 1308865 AN RD
Поиск
предложений
PIC18F2520T-I/ML052
-
Поиск
предложений
PIC18F2520T-I/ML056
Microchip Technology Inc.
Арт.: 1308866 AN RD
Поиск
предложений
PIC18F2520T-I/ML056
-
Поиск
предложений
PIC18F2520T-I/SO027
Microchip Technology Inc.
Арт.: 1308867 AN RD
Поиск
предложений
PIC18F2520T-I/SO027
-
Поиск
предложений
PIC18F2520T-I/SO028
Microchip Technology Inc.
Арт.: 1308868 AN RD
Поиск
предложений
PIC18F2520T-I/SO028
-
Поиск
предложений
PIC18F2520T-I/SO037
Microchip Technology Inc.
Арт.: 1308869 AN RD
Поиск
предложений
PIC18F2520T-I/SO037
-
Поиск
предложений
PIC18F2520T-I/SO044
Microchip Technology Inc.
Арт.: 1308870 AN RD
Поиск
предложений
PIC18F2520T-I/SO044
-
Поиск
предложений
PIC18F2520T-I/SO045
Microchip Technology Inc.
Арт.: 1308871 AN RD
Поиск
предложений
PIC18F2520T-I/SO045
-
Поиск
предложений
PIC18F2520T-I/SO055
Microchip Technology Inc.
Арт.: 1308872 AN RD
Поиск
предложений
PIC18F2520T-I/SO055
-
Поиск
предложений
PIC18F2520T-I/SOC01
Microchip Technology Inc.
Арт.: 1308873 AN RD
Поиск
предложений
PIC18F2520T-I/SOC01
-
Поиск
предложений
PIC18F2520T-I/SOC11
Microchip Technology Inc.
Арт.: 1308874 AN RD
Поиск
предложений
PIC18F2520T-I/SOC11
-
Поиск
предложений