37
36
• THD + DC HARMONIC measures:
YY MM GG HH MM 0x04 24 Byte record data SS Check
YY MM GG HH MM 0x14 24 Byte record data SS Check
YY MM GG HH MM 0x24 25 Byte record data
Check
Where:
- YY, MM, DD, HH, MM are the year, month, day,
hour and minute when the record was stored
(D1..D5);
- 0x04 is the type of record: record 4, under record 0 (D6);
- Record data:
- V Total Harmonic Distortion factor
(ref. fundamental)
(D7..D9: base + exp)
- V THD (ref. RMS)
(D10..D12: base + exp)
- I THD (ref. fundamental)
(D13..D15: base + exp)
- I THD (ref. RMS)
(D16..D18: base + exp)
- V Crest Value
(D19..D21: base + exp)
- V % Crest Value
(D22..D24: base + exp)
- I Crest Value
(D25..D27: base + exp)
- I % Crest Value
(D28..D30: base + exp)
- SS are the seconds
(D31)
- D32 Modbus check-sum
- 0x14 is the type of record: record 4, under record 1 (D6);
- Record data:
- VDC Ripple
(D7..D9: base + exp)
- % VDC Ripple
(D10..D12: base + exp)
- ADC Ripple
(D13..D15: base + exp)
- % ADC Ripple
(D16..D18: base + exp)
- D19..D30 not used
- SS are the seconds (D31)
- D32 Modbus check-sum
- 0x24 is the type of record: record 4, under record 2 (D6);
- Record data:
- Harmonic N selected
(D7 decimal)
- Harmonic N volt
(D8..D10: base + exp)
- Harmonic N volt ref. to fundamental
(D11..D13: base + exp)
- Harmonic N amps
(D14..D16: base + exp)
- Harmonic N amps ref. to fundamental
(D17..D19: base + exp)
- Cosphi Harmonic N
(D20..D22: base + exp)
- volt fundamental
(D23..D25: base + exp)
- amps fundamental
(D26..D28: base + exp)
- cosphi fundamental
(D29..D31: base + exp)
- D32 check-sum tipo Modbus
The base + exp values are represented as:
lsb_base(bcd), msb_base(bcd), exp(decimal).
Through the Setup menu (LOG SETUP) the data
recording mode can be configured:
- LOG_RATE - Setup of measures sampling time;
allowable values are 00..99 (00 = every two
measure cycles, i.e., every 2 seconds; 01..99
minutes).
ENGLISH
