参数资料
型号: 71M6521FE-DB
厂商: Maxim Integrated Products
文件页数: 88/107页
文件大小: 0K
描述: BOARD DEMO FOR 71M6521FE
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:
已用 IC / 零件: 71M6521
已供物品: 2 个板,线缆,CD,电源
71M6521DE/DH/FE Data Sheet
CE Calibration Parameters
The table below lists the parameters that are typically entered to effect calibration of meter accuracy.
– 1. If it is desired to delay the current by the
(lag) is introduced. Range: ± 2
CE
Address
0x08
0x09
0x0A
0x0B
0x0C
Name
CAL_IA
CAL_VA
CAL_IB
CAL_VB
PHADJ_A
Default
16384
16384
16384
16384
0
Description
These constants control the gain of their respective channels. The nominal
value for each parameters is 2 14 = 16384. The gain of each channel is directly
proportional to its CAL parameter. Thus, if the gain of a channel is 1% slow,
CAL should be scaled by 1/(1 – 0.01).
These two constants control the CT phase compensation. No compensation
occurs when PHADJ_X = 0. As PHADJ_X is increased, more compensation
15
angle Φ :
0x0D
PHADJ_B
0
PHADJ _ X = 2 20
PHADJ _ X = 2 20
0 . 02229 ? TAN Φ
0 . 1487 ? 0 . 0131 ? TAN Φ
0 . 0155 ? TAN Φ
0 . 1241 ? 0 . 009695 ? TAN Φ
at 60Hz
at 50Hz
Other CE Parameters
The table below shows CE parameters used for suppression of noise due to scaling and truncation effects.
This parameter is added to compensate for input noise and truncation in the
squaring calculations for I . QUANT_I affects only I0SQSUM and I1SQSUM .
LSB = ( IMAX /In_8 )*7.4162*10 -10 A 2
CE
Address
0x13
0x18
0x15
0x1B
0x16
Name
QUANTA
QUANTB
QUANT_VARA
QUANT_VARB
QUANT_I
Default
0
0
0
0
0
Description
This parameter is added to the Watt calculation for element 0 to compensate
for input noise and truncation.
LSB = ( VMAX * IMAX / In_8 ) *7.4162*10 -10 W
This parameter is added to the Watt calculation for element 1 to compensate
for input noise and truncation. Same LSB as QUANTA.
This parameter is added to the VAR calculation for element A to compensate
for input noise and truncation.
LSB = ( VMAX * IMAX / In_8 ) * 7.4162*10 -10 W
This parameter is added to the VAR calculation for element B to compensate
for input noise and truncation. Same LSB as for QUANT_VARA.
2
2 2
Page: 88 of 107
Rev 3
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