Datasheet

Theory of operation STPMC1
50/77 Doc ID 15728 Rev 7
9.17.5 Group 4 data records
4.1 DRR:
● R-phase reactive energy: 20-bit accumulator of R phase reactive energy.
● R-phase status: 8-bit R phase status (see Tabl e 3 2 ). Bit [0] ( BIL ) represents no-load
condition for phase R reactive energy.
4.2 DRS:
● S-phase reactive energy wide band: 20-bit accumulator of S phase reactive energy
● S-phase status: 8-bit S phase status (see Tabl e 3 2 ). Bit [0] ( BIL ) represents no-load
condition for phase S reactive energy.
4.3 DRT:
● T-phase reactive energy wide band: 20-bit accumulator of T phase reactive energy
● T-phase status: 8-bit T phase status (see Tabl e 3 2 ). Bit [0] ( BIL ) represents no-load
condition for phase T reactive energy.
4.4 CF1:
● bits [55..28] of configurators (see Tabl e 3 3 )
Note: When the configuration bit FUND is set, fundamental reactive energy replaces full
bandwidth reactive energy.
Figure 18. Group 4 data records
4 bit
DRR
DRS
DRT
CF1
parity R-phase reactive energy R-phase status
parity S-phase statusS-phase reactive energy
parity T-phase reactive energy T-phase status
parity bits [55..28] of configurators
8 bit
20 bit
20 bit
4 bit4 bit4 bit
DRR
DRS
DRT
CF1
parity R-phase reactive energy R-phase statusparity R-phase reactive energy R-phase status
parity S-phase statusS-phase reactive energyparity S-phase statusS-phase reactive energy
parity T-phase reactive energy T-phase statusparity T-phase reactive energy T-phase status
parity bits [55..28] of configuratorsparity bits [55..28] of configurators
8 bit8 bit
20 bit20 bit
20 bit20 bit
4 bit
DRR
DRS
DRT
CF1
parity R-phase reactive energy R-phase status
parity S-phase statusS-phase reactive energy
parity T-phase reactive energy T-phase status
parity bits [55..28] of configurators
8 bit
20 bit
20 bit
4 bit4 bit4 bit
DRR
DRS
DRT
CF1
parity R-phase reactive energy R-phase statusparity R-phase reactive energy R-phase status
parity S-phase statusS-phase reactive energyparity S-phase statusS-phase reactive energy
parity T-phase reactive energy T-phase statusparity T-phase reactive energy T-phase status
parity bits [55..28] of configuratorsparity bits [55..28] of configurators
8 bit8 bit
20 bit20 bit
20 bit20 bit