MAXQ3180 Maxim, MAXQ3180 Datasheet - Page 30

• Manufacturer Part Number: MAXQ3180
• Description: The MAXQ3180 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

Low-Power, Multifunction, Polyphase AFE
30
BIT
1:0
______________________________________________________________________________________
CONCFG
NAME
These bits determine how power is calculated on each of the three phases.
00
01
10
11
P
P
P
P
P
P
P
P
P
P
P
P
A
B
C
A
B
C
A
B
C
A
B
C
= I
= I
= I
= I
= I
= I
= I
= I
= I
= I
= I
= I
A
B
C
A
B
C
A
B
C
A
B
C
x V
x V
x V
x V
x (-V
x V
x V
x (-V
x V
x V
x (V
x V
A
B
C
A
C
A
C
A
C
A
C
A
Operating Mode Register 1 (OPMODE1) (0x002) (continued)
)
- V
- V
C
C
)
)
Use this configuration when the load is
connected in a wye arrangement and
neutral is connected to MAXQ3180 ground,
or when the load is connected in a delta
arrangement and isolated voltage and
current sensors are used. This
arrangement measures power in each load
branch rather than power in each source
branch.
Use this configuration when the load is
connected in a four-wire delta
arrangement. In this arrangement, the BC
leg is split and V
equal to -V
neutral.
Use this configuration when the load is
connected in a four-wire wye arrangement,
but only two voltage sensors are
available. When connected in this way,
phase B is assumed to be ground.
Use this configuration when the load is
connected as a three-wire delta and it is
desired to measure the voltage and current
inside the delta legs, but to calculate the
power in each of the source circuits. When
connected this way, source phase B is
considered ground.
C-N
. Voltages are referenced to
B-N
FUNCTION
is expected to be
V
V
I
V
V
I
I
I
I
I
I
I
I
I
V
V
V
V
I
V
I
V
I
I
N
V
I
V
V
V