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| 型号： | 71M6511-DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 30/115页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO 71M6511 ENERGY METER |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | 71M6511 |
| 已供物品： | 2 个板，线缆，CD，电源 |
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71M6511/71M6511H Demo Board User’s Manual
When applying VMAX at the primary side of the transformer, the secondary voltage V s is:
V s = VMAX / N
V s is scaled by the resistor divider ratio R R . When the input voltage to the voltage channel of the 71M6511 is
the desired 177mV, V s is then given by:
V s = R R * 177mV
Resolving for R R , we get:
R R = (VMAX / N) / 177mV = (600V / 30) / 177mV = 170.45
This divider ratio can be implemented, for example, with a combination of one 16.95k ? and one 100 ?
resistor.
1.9
CALIBRATION PARAMETERS
1.9.1 GENERAL CALIBRATION PROCEDURE
Any calibration method can be used with the 71M6511/6511H chips. This Demo Board User’s Manual pre-
sents calibration methods with three or five measurements as recommended methods, because they work
with most manual calibration systems based on counting "pulses" (emitted by LEDs on the meter).
Naturally, a meter in mass production will be equipped with special calibration code offering capabilities
beyond those of the Demo Code. It is basically possible to calibrate using voltage and current readings, with
or without pulses involved. For this purpose, the MPU Demo Code can be modified to display averaged
voltage and current values (as opposed to momentary values). Also, automated calibration equipment can
communicate with the Demo Boards via the serial interface and extract voltage and current readings. This is
possible even with the unmodified Demo Code.
A complete calibration procedure is given in Section 2.1 (Application Information).
Regardless of the calibration procedure used, parameters (calibration constants) will result that will have to
be applied to the 71M6511/6511H chip in order to make the chip apply the modified gains and phase shifts
necessary for accurate operation. Table 1-4 shows the names of the calibration constants, their function, and
their location in the CE RAM.
Again, the command line interface can be used to store the calibration constants in their respective CE RAM
addresses. For example, the command
>]8=+16302
stores the decimal value 16302 in the CE RAM location controlling the gain of the current channel ( CAL_IA ).
The command
>]9=4005
stores the hexadecimal value 0x4005 (decimal 16389) in the CE RAM location controlling the gain of the
voltage channel ( CAL_VA ).
Page: 30 of 115
? 2005-2007 TERIDIAN Semiconductor Corporation
Revision 5.4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6511H | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Single-Phase Energy Meter IC |
| 71M6511H-DB | 功能描述:开发板和工具包 - 8051 71M6511H Demo Brd RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
| 71M6511H-IGT | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Single-Phase Energy Meter IC |
| 71M6511H-IGT/F | 功能描述:计量片上系统 - SoC Highly Integrated SoC w/MCU Core RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
| 71M6511H-IGTR | 制造商:Maxim Integrated Products 功能描述:RESID. HI PRECISION METR (1P, .1%) - Tape and Reel |
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