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ADE7880
Data Sheet
Bit
6
Mnemonic
REVAPSEL
Default Value
0
Description
0: The total active power on each phase is used to trigger a bit in the STATUS0 register as
follows: on Phase A triggers Bit 6 (REVAPA), on Phase B triggers Bit 7 (REVAPB), and on
Phase C triggers Bit 8 (REVAPC).
1: The fundamental active power on each phase is used to trigger a bit in the STATUS0
register as follows: on Phase A triggers Bit 6 (REVAPA), on Phase B triggers Bit 7 (REVAPB),
and on Phase C triggers Bit 8 (REVAPC).
7
Reserved
1
Reserved. This bit does not manage any functionality.
Table 50. CONSEL[1:0] Bits in Energy Registers 1
Energy Registers
AWATTHR, AFWATTHR
BWATTHR, BFWATTHR
CWATTHR, CFWATTHR
AVARHR, AFVARHR
BVARHR, BFVARHR
CVARHR, CFVARHR
AVAHR
BVAHR
CONSEL[1:0] = 00
VA × IA
VB × IB
VC × IC
VA × IA’
VB × IB’
VC ×IC’
VA rms × IA rms
VB rms × IB rms
CONSEL[1:0] = 01
VA × IA
VB = VA – VC
VB ×IB 1
VC × IC
VA × IA’
VB = VA – VC
VB × IB’ 1
VC × IC’
VA rms × IA rms
VB rms × IB rms
CONSEL[1:0] = 10
VA × IA
VB = ?VA – VC
VB × IB
VC × IC
VA × IA’
VB = ?VA – VC
VB × IB’
VC × IC’
VA rms × IA rms
VB rms × IB rms
CONSEL[1:0] = 11
VA × IA
VB = ?VA
VB × IB
VC × IC
VA × IA’
VB = ?VA
VB × IB’
VC × IC’
VA rms × IA rms
VB rms × IB rms
VB = VA – VC 1
CVAHR
VC rms × IC rms
VC rms × IC rms
VC rms × IC rms
VC rms × IC rms
1
In a 3-phase three wire case (CONSEL[1:0] = 01), the ADE7880 computes the rms value of the line voltage between Phase A and and Phase C and stores the result into
BVRMS register (see the Voltage RMS in 3-Phase Three Wire Delta Configurations section). Consequently, the ADE7880 computes powers associated with Phase B that
do not have physical meaning. To avoid any errors in the frequency output pins CF1, CF2 or CF3 related to the powers associated with Phase B, disable the
contribution of Phase B to the energy to frequency converters by setting bits TERMSEL1[1], or TERMSEL2[1], or TERMSEL3[1] to 0 in the COMPMODE register (see the
Energy-to-Frequency Conversion section).
Table 51. LCYCMODE Register (Address 0xE702)
Bit
0
Mnemonic
LWATT
Default Value
0
Description
0: the watt-hour accumulation registers (AWATTHR, BWATTHR, CWATTHR, AFWATTHR,
BFWATTHR, and CFWATTHR) are placed in regular accumulation mode.
1: the watt-hour accumulation registers (AWATTHR, BWATTHR, CWATTHR, AFWATTHR,
BFWATTHR, and CFWATTHR) are placed into line cycle accumulation mode.
1
LVAR
0
0: the var-hour accumulation registers (AFVARHR, BFVARHR, and CFVARHR) are placed in regular
accumulation mode.
1: the var-hour accumulation registers (AFVARHR, BFVARHR, and CFVARHR) are placed into line-
cycle accumulation mode.
2
LVA
0
0: the VA-hour accumulation registers (AVAHR, BVAHR, and CVAHR) are placed in regular
accumulation mode.
1: the VA-hour accumulation registers (AVAHR, BVAHR, and CVAHR) are placed into line-cycle
accumulation mode.
3
ZXSEL[0]
1
0: Phase A is not selected for zero-crossings counts in the line cycle accumulation mode.
1: Phase A is selected for zero-crossings counts in the line cycle accumulation mode. If more
than one phase is selected for zero-crossing detection, the accumulation time is shortened
accordingly.
4
ZXSEL[1]
1
0: Phase B is not selected for zero-crossings counts in the line cycle accumulation mode.
1: Phase B is selected for zero-crossings counts in the line cycle accumulation mode.
5
ZXSEL[2]
1
0: Phase C is not selected for zero-crossings counts in the line cycle accumulation mode.
1: Phase C is selected for zero-crossings counts in the line cycle accumulation mode.
6
RSTREAD
1
0: read-with-reset of all energy registers is disabled. Clear this bit to 0 when Bits[2:0] (LWATT,
LVAR, and LVA) are set to 1.
1: enables read-with-reset of all xWATTHR, xVARHR, xVAHR, xFWATTHR, and xFVARHR registers.
This means a read of those registers resets them to 0.
Rev. A| Page 100 of 104
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