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| 型号： | 71M6543F-DB-CT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 32/91页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD 71M6543F-DB-CT |
| 标准包装： | 1 |
| 系列： | * |
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71M6543 Demo Board User’s Manual
The meter constant kh (Wh per pulse) is calculated as follows:
Kh = 54.5793* VMAX * IMAX / ( SUM_SAMPS * WRATE *X),
where
VMAX = RMS voltage at the meter input corresponding to 176.8 mV RMS at the VA pin of the
71M6543. This value is determines by the divider ratio of the voltage divider resistors. For the
71M6543 Demo Board, this value is 600.
IMAX / = RMS current through one current sensor corresponding to the maximum RMS voltage at the
input pins of the 71M6103, as determined by the formula above.
SUM_SAMPS = The value in the SUM_SAMPS register in I/O RAM (2520 for this version of the Demo
Code).
WRATE = The value in the pulse rate adjustment register of the CE.
X = The pulse rate adjustment modifier, determined by the PULSE_FAST and PULSE_SLOW bits in
the CECONFIG register.
For the 71M6103, a kh of 3.2 (3.2 Wh per pulse) is achieved by the following combination of system settings:
VMAX = 600 V
IMAX / = 163.7 A, based on R S = 120 μΩ
SUM_SAMPS = 2520
WRATE = 7090
X = 0.09375, based on PULSE_FAST =0 and PULSE_SLOW = 1
The calculations shown above are simplified if the calibration spreadsheet provided with each Demo Kit is used.
Figure 1-7 shows an example: The user enters data in the yellow fields, and the results will show in the green
fields.
Figure 1-7: Worksheet from Calibration Spreadsheets REV 6.0
1.10.6 DETERMINING THE TYPE OF 71M6X0X
Sometimes it is useful to be able to determine the type of 71M6x0x Remote Sensor Interface that is mounted on
the Demo Board. The CLI can be used to find out which Remote Sensor Interface is present, using the following
steps:
1)
2)
3)
Page: 32 of 91
Type 6R1.14, 6R2.14, or 6R3.14, depending on which phase is tested.
The CLI will respond with a two-byte hex value, e.g. E9DB.
Write the hex value out as binary sequence, e.g. 1110 1001 11 01 1011. Bits 4 and 5 determine the
v5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6543F-IGT/F | 功能描述:计量片上系统 - SoC Precision Energy Meter IC 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 |
| 71M6543F-IGTR/F | 功能描述:计量片上系统 - SoC Precision Energy Meter IC 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 |
| 71M6543FT-IGT/F | 制造商:Maxim Integrated Products 功能描述:ENERGY METER ICS - Rail/Tube |
| 71M6543FT-IGTR/F | 制造商:Maxim Integrated Products 功能描述:3-PHASE SOC, 64KB FLASH, PRES TEMP SENSOR - Tape and Reel |
| 71M6543G | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation |
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