Fault Waveform Capture

The system stores the variables V1N, V2N, V3N, I1, I2, I3, IN during 12 cycles (16 points per cycles) in the file number 22.

This file consists of a fixed number of records (22). All records are of similar size that is 64 registers wide.

The following table describes the file header content:

Address	Register	RW	X	Unit	Type	Range	A/E/P/H	Description
0x26EB	9964	RW	–	–	INT16U	–	H	File status: 0x0000 = file disabled 0xFFFF = file enabled (factory setting)
0x26EC	9965	R	–	–	INT16U	–	H	Type of file: 22 = fault waveform capture
0x26ED	9966	R	1	–	INT16U	–	H	Size of a file = 22 records
0x26EE	9967	R	1	–	INT16U	–	H	Size of a record = 64 registers
0x26EF	9968	R	–	–	INT16U	1	H	File filling mode: 0 = circular 1 = disabled if log is full
0x26F0	9969	R	1	–	INT16U	–	H	Number of cycle segments: 1 = 12 cycles for fault waveform capture
0x26F1	9970	R	1	–	INT16U	–	H	Number of cycles before capture: 2 = waveform capture and fault waveform capture
0x26F2	9971	R	1	–	INT16U	–	H	Number of points per cycle: 16 = fault waveform capture

The following table describes the file status content:

Address	Register	RW	X	Unit	Type	Range	A/E/P/H	Description
0x26FB	9980	R	1	–	INT16U	–	H	Size of a file = 22 records
0x26FC	9981	R	1	–	INT16U	–	H	Size of a record = 64 registers
0x26FD	9982	R	1	–	INT16U	–	H	0x0000 = file OK 0x000A = record size smaller than expected 0x0014 = record size larger than expected 0x001E = insufficient memory 0x00FA = internal error 0x00FD = corrupted allocation table 0x00FE = configuration zero 0x00FF = invalid configuration 0xFC00 = invalid file number 0xFD00 = invalid record number 0xFE00 = file not supported 0xFF00 = cannot allocate file
0x26FE	9983	R	1	–	INT16U	–	H	Number of records in the file = 22
0x26FF	9984	R	1	–	INT16U	–	P/H	Sequence number of first record in the file (the oldest) = 1
0x2700	9985	R	1	–	INT16U	–	P/H	Sequence number of last record in the file (the most recent) = 22
0x2701– 0x2703	9986– 9988	R	–	–	DATE	–	H	Date the last file was reset. Factory setting = 0x8000 0x8000 0x8000

The fault waveform capture has a fixed number of records and all record has a fixed number of registers:

Record Number	Registers	Type	Description
1	1–4	XDATE	Extended date/time
	5–11	–	Reserved
	12	INT16U	ID of fault WFC trigger: Alarm number 1000 to 1031
	13	–	System type: 31, 40 or 41
	14	A	Circuit breaker nominal current
	15	SFIXPT	Voltage multiplier for phase 1
	16	INT16	Voltage offset for phase 1
	17	SFIXPT	Voltage multiplier for phase 2
	18	INT16	Voltage offset for phase 2
	19	SFIXPT	Voltage multiplier for phase 3
	20	INT16	Voltage offset for phase 3
	21	SFIXPT	Current multiplier for phase 1
	22	INT16	Current offset for phase 1
	23	SFIXPT	Current multiplier for phase 2
	24	INT16	Current offset for phase 2
	25	SFIXPT	Current multiplier for phase 3
	26	INT16	Current offset for phase 3
	27	SFIXPT	Current multiplier for neutral
	28	INT16	Current offset for neutral
	29	INT16U	Scaling factor used for SFIXPT math on voltage samples
	30	INT16U	Scaling factor used for SFIXPT math on phase current samples
	31	INT16U	Scaling factor used for SFIXPT math on neutral current samples
	32–64	–	Not used
2–4	1–64	INT16U	Voltage V1N sample points (16 points - 12 cycles)
5–7	1–64	INT16U	Voltage V2N sample points (16 points - 12 cycles)
8–10	1–64	INT16U	Voltage V3N sample points (16 points - 12 cycles)
11–13	1–64	INT16U	Current I1 sample points (16 points - 12 cycles)
14–16	1–64	INT16U	Current I2 sample points (16 points - 12 cycles)
17–19	1–64	INT16U	Current I3 sample points (16 points - 12 cycles)
20–22	1–64	INT16U	Current IN sample points (16 points - 12 cycles) Valid only with system type 41

Apply the following rules to derive the voltages:

on phase 1:

Sample (Volt) = [(sample – register number 16 of first record) x register number 15 of first record.]/register number 29 of first record.
on phase 2:

Sample (Volt) = [(sample – register number 18 of first record) x register number 17 of first record.]/register number 29 of first record.
on phase 3:

Sample (Volt) = [(sample – register number 20 of first record) x register number 19 of first record.]/register number 29 of first record.

Apply the following rules to derive the currents:

on phase 1:

Sample (Ampere) = [(sample – register number 22 of first record) x register number 21 of first record.]/register number 30 of first record.
on phase 2:

Sample (Ampere) = [(sample – register number 24 of first record) x register number 23 of first record.]/register number 30 of first record.
on phase 3:

Sample (Ampere) = [(sample – register number 26 of first record) x register number 25 of first record.]/register number 30 of first record.
on neutral:

Sample (Ampere) = [(sample – register numbr 27 of first record) x register number 28 of first record.]/register number 31 of first record.