Siemens 7SA511 manual Storage and Display Description, Event Log Messages, Binary Inputs

7SA511 Line Protection RelayChapter 6

6.2.1 Storage and Display Description

Up to 50 messages c n be stored in the event log. After all 50 memory locations are filled, additional messages replace the oldest messages in sequence. When paging through the stored messages, if more th n 50 messages have been stored, “Table overflow” is displayed in the last message slot. Othe wise, “End of table” will appear as the last valid message.

For event log messages, the first line of the display always gives the date and time of the event (see example below). The time is given to the nearest minute, but the events are sorted (placed in the order of occurrence) with 1 millisecond resolution. The second line of the display gives the event description as listed in Table 6-2. Each event description may be followed by a Cor Gtag. The Ctag (Coming) indicates the message was logged at pickup (see example below). The Gtag (Going) indicatesParam11the/0message2./9SetC41was logged1:15Cat drop-out.

6.2.2 Event Log Messages

The operational and status messages in the event log fall into four different categories.

1.Binary Inputs - events associated with changes on the binary inputs.

2.General - operational events not associated with another specific category.

3.Monitoring functions - events associated with the internal relay monitoring functions (see Reference B, “Hardware & Software”).

4.Relay protection functions and optional features - operational events associated with distance protection, pilot protection, emergency overcurrent protection, power swing block/trip, high-resistance ground fault protection, and automatic reclose functions.

Only messages consistent with your relay configuration and options will appear in the display. See Chapter 8, “Maintenance,” for information on how to erase messages in the event log.

Table 6-2.Possible Event Log Messages
LCD Text (2nd line)	Description	Possible Tag
Binary Inputs
>Start FltRec	Start waveform capture from external command via binary input	C/G
>Start FltLoc	Start fault location from external command via binary input	C/G
>VT mcb Trip	Voltage transformer secondary m.c.b. has tripped	C/G
>Annunc. 1	User-defined annunciation 1 has been received	C/G
>Annunc. 2	User-defined annunciation 2 has been received	C/G
>Annunc. 3	User-defined annunciation 3 has been received	C/G
>Annunc. 4	User-defined annunciation 4 has been received	C/G
>Start AR	Start internal automatic reclose	C
>Trip L1 AR	Trip pole 1 via internal automatic reclose	C
>Trip L2 AR	Trip pole 2, via internal automatic reclose	C
>Trip L3 AR	Trip pole 3 via internal automatic reclose	C
>Extens. Z1B	Change distance measurement to overreach zone Z1B	C
July 27, 1995		6-5