CS5464-IS【PDF 38/46 页】IC PWR/ENERGY METER 3CH 28-SSOP

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CS5464

8.3.18 System Gain (G) – Address: 28

MSB

LSB

-(2 )

2

2

2

2

2

1

2

0

2

-1

-2

-3

-4

-5

-6

.....

2 -16

2

-17

2

-18

2

-19

2

-20

2

-21

2 -22

Default = 1.25

System Gain ( G ) is applied to all channels. By default, G = 1.25, but can be finely adjusted to compensate for

voltage reference error. It is a two's complement value in the range of -2.0 ? value ? 2.0, with the binary point to

the right of the second MSB. Values should be kept within 5% of 1.25.

8.3.19 System Time (Time) – Address: 29

MSB

LSB

2 23

2 22

2 21

2 20

2 19

2 18

2 17

2 16

.....

2 6

2 5

2 4

2 3

2 2

2 1

2 0

Default = 0

System Time ( Time ) is measured in output word rate (OWR) samples. This is an unsigned integer in the range

of 0 to 16,777,215 samples. At 4.0 kHz, OWR it will overflow every 1 hour, 9 minutes, and 54 seconds. Time

can be used by the application to manage real-time events.

8.4 Page 2 Registers

8.4.1 Voltage Sag and Current Fault Duration (V1Sag DUR , V2Sag DUR , I1Fault DUR , I2Fault DUR )

Address: 0 ( V1Sag DUR ), 8 ( V2Sag DUR ), 4 ( I1Fault DUR ), 12 ( I2Fault DUR )

MSB

LSB

0

2 22

2 21

2 20

2 19

2 18

2 17

2 16

.....

2 6

2 5

2 4

2 3

2 2

2 1

2 0

Default = 0

Voltage sag duration, V1Sag DUR ( V2Sag DUR ) and current fault duration , I1Fault DUR ( I2Fault DUR ) determine the

count of output word rate (OWR) samples utilized to determine a sag or fault event. These are integers in the

range of 0 to 8,388,607 samples. A value of zero disables the feature.

8.4.2 Voltage Sag and Current Fault Level (V1Sag LEVEL , V2Sag LEVEL , I1Fault LEVEL , I2Fault LEVEL )

Address: 1 ( V1Sag LEVEL ), 9 ( V2Sag LEVEL ), 5 ( I1Fault LEVEL ), 13 ( I2Fault LEVEL )

MSB

LSB

-(2 0 )

2 -1

2 -2

2 -3

2 -4

2 -5

2 -6

2 -7

.....

2 -17

2 -18

2 -19

2 -20

2 -21

2 -22

2 -23

Default = 0

Voltage sag level, V1Sag LEVEL ( V2Sag LEVEL ) and current fault level, I1Fault LEVEL ( I2Fault LEVEL ) establish an

input level below which a sag or fault is triggered These are two's complement values in the range of

-1.0 ? value ? 1.0, with the binary point to the right of the MSB. Negative values are not used.

38

DS682F3

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