欢迎访问ic37.com |
会员登录 免费注册
发布采购

78M6610LMU 参数 Datasheet PDF下载

78M6610LMU图片预览
型号: 78M6610LMU
PDF下载: 下载PDF文件 查看货源
内容描述: 电能计量处理器的负荷监测单位 [Energy Measurement Processor for Load Monitoring Units]
分类和应用: 监控
文件页数/大小: 63 页 / 1710 K
品牌: MAXIM [ MAXIM INTEGRATED PRODUCTS ]
 浏览型号78M6610LMU的Datasheet PDF文件第24页浏览型号78M6610LMU的Datasheet PDF文件第25页浏览型号78M6610LMU的Datasheet PDF文件第26页浏览型号78M6610LMU的Datasheet PDF文件第27页浏览型号78M6610LMU的Datasheet PDF文件第29页浏览型号78M6610LMU的Datasheet PDF文件第30页浏览型号78M6610LMU的Datasheet PDF文件第31页浏览型号78M6610LMU的Datasheet PDF文件第32页  
78M6610+LMU Data Sheet  
Voltage Channel Measurements  
Instantaneous and quadrature voltage measurements are updated every sample while RMS Voltage and  
Peak Voltage are updated every accumulation interval (n samples). An AC voltage frequency  
measurement is also updated every low-rate interval.  
Register  
Description  
Time Scale  
VA  
VB  
VC  
Instantaneous Voltage @ time t  
1 sample  
VQA  
VQB  
Quadrature Voltage @ time t - 90°  
AC Voltage Frequency  
FREQ  
VA_PEAK  
VB_PEAK  
Peak Voltage in last interval  
1 interval  
VA_RMS  
VB_RMS  
VC_RMS  
RMS Voltage of last interval  
Quadrature Voltage  
The quadrature voltage is instantaneous voltage that is phase shifted (delayed) 90° from the respective  
input voltage.  
Voltage Frequency  
This output is a measurement of the fundamental frequency of the referenced AC voltage source with a  
range from 0Hz to 128Hz - LSB. This is a single reading per device.  
Peak Voltage  
This output is a capture of the largest magnitude instantaneous voltage source sample during the  
previous accumulation interval.  
Instantaneous  
Voltage (Vx)  
ABS  
MAX  
maximum  
Vx_PEAK  
Figure 17. Peak Voltage Computation  
RMS Voltage  
The 78M6610+LMU reports true RMS measurements for each input. An RMS value is obtained by  
performing the sum of the squares of instantaneous values over a time interval (accumulation interval)  
and then performing a square root of the result after dividing by the number of samples in the interval.  
Instantaneous  
Voltage (Vx)  
N-1  
Vx2_SUM  
Vx2  
X
N
Vx_RMS  
n=0  
Figure 18. RMS Voltage Computation  
28  
Rev 0