Siemens 7SA511 manual Table Status, Target Log for All Systems 5200, 5300

7SA511 Line Protection RelayDisplaying System and Relay Information

LCD Text (2nd line)	Description	Possible Tag
Table Status
End of table	Follows last stored message if the table is not full
Table overflow	Last valid message if more than 50 messages are stored
Table empty	No event recorded (displayed in all unused addresses)

6.3 Target Log for All Systems (5200, 5300, and 5400)

Addresses 5200, 5300, and 5400 contain the Target Log for the last three faults. This record is called a target log because all of these faults can potentially result in a trip command being issued to a target circuit breaker. Fault information is recorded sequentially from the most recent fault (5200) to the “oldest”FAULT5432n200fault3rLA(5400)dTOLASTST--the oldest fault data is erased when the next fault occurs.

6.3.1 Storage and Display Description

Beginning at address 5200, 5300, or 5400, a sequence of messages provides a chronological review of all the events that occur from the initial detection of the fault until the fault is cleared and the relay returns o a normal no-fault condition (drop-out). Each system fault is counted, and the first target log en ry message displays the fault number as recorded since the relay memory was last cleared.

Up to 80 messages can be stored for each of the three recorded faults. If more than 80 annunciations occur, the messages for those beyond 80 are not stored and the annunciations are lost.

Each message is iden ified by a sequence number in the first three character positions of the LCD (see example below). The first message, 001, displays the date of the fault in the first line of the LCD. The second line displays he message “System Flt” followed by the consecutive fault

number. SystemFlt6500111/02/94

Sequence Number

Event Message

Date fault occurred

Fault Number

6-8 July 27, 1995