 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
71M6511 Datasheet(PDF) 67 Page - Teridian Semiconductor Corporation |
|
||||||||||||||||||||||||||||||
71M6511 Datasheet(HTML) 67 Page - Teridian Semiconductor Corporation |
|
|
67 / 95 page  71M6511/71M6511H Single-Phase Energy Meter IC DATA SHEET AUGUST 2007 Page: 67 of 95 © 2005-2007 TERIDIAN Semiconductor Corporation V2.6 For generating proper status information, the CE is initialized by the MPU using SAG_THR (default of 80V RMS at the meter input if VMAX=600V) and SAG_CNT (default 80 samples). Using the default value for SAG_CNT, the peak-to-peak signal has to be below SAG_THR value for 32 milliseconds to activate the SAG_X status bits. CE Address Name Default Description 0x31 SAG_THR +56,722,300 (0x361837C) Meter voltage inputs must be above this threshold to prevent sag alarms. LSB = VMAX * 3.3243*10 -9 V peak. For example, if a sag threshold of 80V RMS is desired, 9 10 3243 . 3 2 80 _ − ⋅ ⋅ = VMAX THR SAG 0x32 SAG_CNT 80 Number of consecutive voltage samples below SAG_THR before a sag alarm is declared. 80*397µs = 31.8ms (for MUX_DIV = 1). 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. Fundamental Power Measurement Variables The table below describes each transfer variable for fundamental power measurement. All variables are signed 32 bit integers. Accumulated variables such as WSUM are internally scaled so they have at least 2x margin before overflow when the integration time is 1 second. Additionally, the hardware will not permit output values to ‘fold back’ upon overflow. CE Address Name Description 42 RESERVED 43 W0SUM_X 44 W1SUM_X 45 RESERVED The sum of Watt samples from each wattmeter element (In_8 is the gain configured by IA_SHUNT or IB_SHUNT). LSB = 6.6952*10 -13 VMAX IMAX / In_8 Wh (for MUX_DIV = 1) LSB = 5.1501*10 -13 VMAX IMAX / In_8 Wh (for MUX_DIV = 2) 46 RESERVED 47 VAR0SUM_X 48 VAR1SUM_X 49 RESERVED The sum of VAR samples from each wattmeter element (In_8 is the gain configured by IA_SHUNT or IB_SHUNT). LSB = 6.6952*10 -13 VMAX IMAX / In_8 Wh (for MUX_DIV = 1) LSB = 5.1501*10 -13 VMAX IMAX / In_8 Wh (for MUX_DIV = 2) WxSUM_X is the Wh value accumulated for element ‘X’ in the last accumulation interval and can be computed based on the specified LSB value. For example with VMAX = 600V and IMAX = 208A, LSB (for WxSUM_X ) is 0.08356 µWh (MUX_DIV = 1). |
Similar Part No. - 71M6511 |
|
Similar Description - 71M6511 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
