MAXQ3183 Maxim, MAXQ3183 Datasheet - Page 42
![no-image](/images/no-image-200.jpg)
MAXQ3183
Manufacturer Part Number
MAXQ3183
Description
The MAXQ3183 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, power, energy, and many other metering and power-quality parameters of a polyphase load
Manufacturer
Maxim
Datasheet
1.MAXQ3183.pdf
(102 pages)
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Low-Power, Multifunction, Polyphase AFE
with Harmonics and Tamper Detect
These bits indicate that an overflow condition has occurred on an energy accumulator. An overflow condition is not
an error condition. Rather, it simply indicates that the value in the energy accumulator could be smaller than the pre-
vious reading due to the overflow in the counter. To obtain the actual energy usage since the previous reading,
0x100000000 must be added to the difference. These bits, once set, can be cleared only by the host.
42
Bit:
Name:
Reset:
Bit:
Name:
Reset:
BIT
BIT
7:5
______________________________________________________________________________________
7
6
5
4
3
2
1
0
4
3
2
1
0
Energy Overflow Flags, Phase X = A/B/C (X.EOVER) (A: 0x146, B: 0x232, C: 0x31E)
DCHRM
DCHAM
NOZXM
NAME
DIR_R
DIR_A
NAME
RNOV
ANOV
RPOV
APOV
OCM
OVM
UVM
SOV
—
DIR_R
—
7
0
7
0
Interrupt Mask, Phase X = A/B/C (X.MASK) (A: 0x145, B: 0x231, C: 0x31D)
Reactive Energy Direction Status
0 = positive
1 = negative
Active Energy Direction Status
0 = positive
1 = negative
Reactive Energy Direction Change Mask. If set, a change in reactive power direction on phase X
causes the DCHR flag in the IRQ_FLAG register to be set.
Real Energy Direction Change Mask. If set, a change in real power direction on phase X causes the
DCHA flag in the IRQ_FLAG register to be set.
No-Zero Crossing Mask. If set, a no-zero crossing on phase X causes the NOZX flag in the IRQ_FLAG
register to be set.
Undervoltage Mask. If set, an undervoltage condition on phase X causes the UV flag in the IRQ_FLAG
register to be set.
Overvoltage Mask. If set, an overvoltage condition on phase X causes the OV flag in the IRQ_FLAG
register to be set.
Overcurrent Mask. If set, an overcurrent condition on phase X causes the OC flag in the IRQ_FLAG
register to be set.
Reserved.
When set, indicates an overflow condition on the apparent energy accumulator.
When set, indicates an overflow condition on the reactive negative energy accumulator.
When set, indicates an overflow condition on the reactive positive energy accumulator.
When set, indicates an overflow condition on the real negative energy accumulator.
When set, indicates an overflow condition on the real positive energy accumulator.
DIR_A
—
6
0
6
0
DCHRM
—
5
0
5
0
DCHAM
SOV
4
0
4
0
FUNCTION
FUNCTION
NOZXM
RNOV
3
0
3
0
RPOV
UVM
2
0
2
0
ANOV
OVM
1
0
1
0
APOV
OCM
0
0
0
0
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