參數(shù)資料
型號(hào)： 71M6534-IGTR/F
廠商： TERIDIAN SEMICONDUCTOR CORP
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP120
封裝： LEAD FREE, LQFP-120
文件頁數(shù)： 120/124頁
文件大?。?/td> 2008K
代理商： 71M6534-IGTR/F
FDS_6533_6534_004
71M6533/71M6534 Data Sheet
v1.1
2007-2009 TERIDIAN Semiconductor Corporation
95
[0]
PULSE_SLOW
0
ther 1 or 0. Default is 0 for both (X = 6).
PULSE_SLOW PULSE_FAST
X
0
1.5 * 2
2 = 6
0
1
1.5 * 2
6 = 96
1
0
1.5 * 2
-4 = 0.09375
1
Do not use
Table 54: Sag Threshold and Gain Adjust Control
CE Ad-
dress
Name
Default
Description
0x24
SAG_THR
2.39*10
7
The voltage threshold for sag warnings. The default value is
equivalent to 80 V RMS if VMAX = 600 V.
0x40
GAIN_ADJ
16384
This register scales all voltage and current channels. The
default value is equivalent to unity gain (1.000).
4.3.8
CE Transfer Variables
When the MPU receives the XFER_BUSY interrupt, it knows that fresh data is available in the transfer
variables. CE transfer variables are modified during the CE code pass that ends with an XFER_BUSY
interrupt. They remain constant throughout each accumulation interval. In this data sheet, the names of
CE transfer variables always end with _X. The transfer variables can be categorized as:
1.
Fundamental energy measurement variables
2.
Instantaneous (RMS) values
3.
Other measurement parameters
Fundamental Energy Measurement Variables
Table 55 describes each transfer variable for fundamental energy measurement. All variables are signed
32-bit integers. Accumulated variables such as WSUM are internally scaled so they have at least 2x mar-
gin before overflow when the integration time is one second. Additionally, the hardware will not permit
output values to fold back upon overflow.
Table 55: CE Transfer Variables
CE Ad-
dress
Name
Description
0x85
WSUM_X
The signed sum: W0SUM_X+W1SUM_X+W2SUM_X.
0x86
W0SUM_X
The sum of Wh samples from each wattmeter element.
LSB = 9.4045*10
-13 VMAX IMAX / In_8 Wh.
0x87
W1SUM_X
0x88
W2SUM_X
0x8A
VARSUM_X
The signed sum: VAR0SUM_X+VAR1SUM_X+VAR2SUM_X.
0x8B
VAR0SUM_X
The sum of VARh samples from each wattmeter element.
LSB = 9.4045*10
-13 VMAX IMAX / In_8 VARh.
0x8C
VAR1SUM_X
0x8D
VAR2SUM_X
WxSUM_X and VARSUM_X are the signed sum of Phase-A, Phase-B and Phase-C Wh or VARh values
according to the metering equation specified in the I/O RAM register EQU. WxSUM_X is the Wh value
accumulated for phase x in the last accumulation interval and can be computed based on the specified
LSB value.
For example, with VMAX = 600 V and IMAX = 208 A, the LSB for WxSUM_X is 0.1173 Wh.
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