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| 型号： | 71M6511-DB |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 56/115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
5.
6.
7.
Apply the error values to the calibration spreadsheet (revision 4.0 or later) and determine the
calibration factors for channel A, i.e. CAL_IA , CAL_VA , and PHADJ_A .
Update the CE registers 0x08, 0x09 and 0x0E of the compute engine with the calibration factors
obtained from the spreadsheet, using the commands ]8= CAL_IA , ]9= CAL_VA , and
]E= PHADJ_A .
Retest for accuracy at several currents and phase angles.
At this point, channel A is calibrated. WSUM will be based on the voltage applied to the meter and the
current flowing through the shunt resistor. The pulses generated will be based on the parameters entered for
channel A.
Calibration for CT (Channel B):
1.
2.
3.
4.
5.
6.
7.
8.
9.
Compute IMAX for the CT channel ( IMAX_CT ), based on the CT turns ratio N and the termination
resistor value R T using the formula:
IMAX_CT = 177mV* N / R T
Store the value obtained for IMAX_CT at the MPU address 0x2B (IMAX2), using the CLI command
)2B= IMAX_CT. This value is used in the following step as IMAX_CT .
Compute WRATE_CT based on the values obtained for IMAX_CT and the formula given in 1.8.2:
WRATE_CT = ( IMAX_CT * VMAX * 47.1132) / (Kh * In_8 * N ACC * X)
Update the WRATE register (CE address 0x2D) with WRATE_CT , using the command
]2D= WRATE_CT.
Enter the command >)7=2 to configure W1SUM as the external pulse source, since the CT is
connected to Channel 1 for VA*IB.
Test channel B for accuracy at 15A, 240V at phase angle 0, phase angle 60° and at phase angle –
60°.
Apply the error values to the calibration spread sheet (revision 4.0 or later) and derive the
calibration factor PHADJ_B .
Update only the CE address 0x0F with the value for PHADJ_B using the command
]F= PHADJ_B.
Adjust CAL_IB for the total error found in the accuracy test using the formula
CAL_IB = 16384 * (1 - error/100)
Since CAL_VA and CAL_IA have already been adjusted for channel A, these registers should not
be updated.
10. Retest channel B for accuracy at several currents and phase angles.
After completing the calibration, the energy values W0SUM, based on VA*IA and W1SUM, based on VA*IB
are accessible to the MPU firmware. The pulse rate is controlled by W1SUM and determined by the
parameters selected for the CT channel (VA, IB). Differences between W0SUM and W1SUM, indicating
tampering, can be detected by the MPU for each accumulation interval.
The user has to customize the Demo Code to utilize the values obtained from the VA, IA,
and IB channels for proper calculation of tariffs.
Page: 56 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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