参数资料
型号: 71M6531F-DB
厂商: Maxim Integrated Products
文件页数: 94/121页
文件大小: 0K
描述: BOARD DEMO 71M6531F
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: 71M6531
主要属性: 单相功率表
已供物品: 2 个板,线缆,CD,电源
Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
The maximum time jitter is 67 μs and is independent of the number of pulses measured. Thus, if the pulse
generator is monitored for one second, the peak jitter is 67 ppm. After 10 seconds, the peak jitter is 6.7 ppm.
The average jitter is always zero. If it is attempted to drive either pulse generator faster than its maximum
rate, it will simply output at its maximum rate without exhibiting any rollover characteristics. The actual
pulse rate, using WSUM as an example, is:
RATE =
WRATE ? WSUM ? F S ? X
2 46
Hz ,
where F S = sampling frequency (2520.6 Hz) and X = Pulse speed factor (as defined in the CECONFIG
register with the PULSE_FAST and PULSE_SLOW bits).
Table 64: CE Pulse Generation Parameters
Maximum value = 2
-1.
Watt pulse generator input (see DIO_PW bit). The output pulse
rate is: APULSEW * F S * 2
* WRATE * X * 2 . This input is buffered
VAR pulse generator input (see DIO_PV bit). The output pulse rate
is: APULSER * F S *2
* WRATE * X * 2 . This input is buffered and
Third pulse generator input (see DIO_PV bit). The output pulse
rate is: APULSE2 * F S *2
* WRATE * X * 2 . This input is buffered
Fourth pulse generator input (see DIO_PV bit). The output pulse
rate is: APULSE3 * F S *2
* WRATE * X * 2 . This input is buffered
CE
Address
0x21
0x41
0x42
0x43
0x44
0x38
Name
WRATE
APULSEW
APULSER
APULSE2
APULSE3
PULSE
WIDTH
Default
827
0
0
0
0
12
Description
Kh = VMAX*IMAX*47.1132 / ( In_8 * WRATE *N ACC *X) Wh/pulse. The
default value results in a Kh of 1.0 Wh/pulse when 2520 samples
are taken in each accumulation interval (and VMAX=600,
IMAX = 442 [for 400μΩ shunt], In_8 = 1, X = 6).
15
-32 -14
and can be loaded during a computation interval. The change will
take effect at the beginning of the next interval.
-32 -14
can be loaded during a computation interval. The change will take
effect at the beginning of the next interval.
-32 -14
and can be loaded during a computation interval. The change will
take effect at the beginning of the next interval.
-32 -14
and can be loaded during a computation interval. The change will
take effect at the beginning of the next interval.
Register for pulse width control of XPULSE and YPULSE. The max-
imum pulse width is (2* PULSEWIDTH +1)*(1/FS). The default value
will generate pulses of 10 ms width at FS = 2520.62 Hz.
4.3.9
CE Calibration Parameters
Table 65 lists the parameters that are typically entered to effect calibration of meter accuracy.
Table 65: CE Calibration Parameters
These constants control the gain of their respective channels. The
nominal value for each parameter is 2
= 16384. The gain of each
– 1. If it is
more compensation (lag) is introduced. Range: ± 2
CE
Address
0x10
0x11
0x12
0x13
0x18
94
Name
CAL_IA
CAL_VA
CAL_IB
CAL_VB
PHADJ_A
Default
16384
16384
16384
16384
0
Description
14
channel is directly proportional to its gain constant. Thus, if the
gain of the IA channel is 1% slow, CAL_IA should be scaled by
1/(1 – 0.01) and the resulting value is 16549.
These two constants control the CT phase compensation. No
compensation occurs when PHADJ_X = 0. As PHADJ_X is increased,
15
desired to delay the current by the angle Φ , the equations are:
Rev 2
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