Siemens 7SA511 manual Reserved Area for LED Labels, Front Serial Data Port

7SA511 Line Protection Relay Programming the Relay

￿Blocked- Lights up RED to indicate that the relay has detected an internal problem and has blocked itself from operation. This LED also will light briefly during initial power-up and after the input/output function assignments und r address 6000 or the scope of function parameters under address 7800 are changed and saved.

The remaining LEDs (1 through 14) will light up RED to indicate that he annunciation assigned to this LED indicator during the configuration process has occurred. These indicators will remain on until reset, and the relay will retain this data even if power is lost (provid d the backup battery is functional). Whether or not the indications are retained in the nonvolatile memory is a configuration option. If the indications are not retained, they will be reset when the fault condition is removed. If they are retained, they can be reset locally by the TargetResetkey on the operator panel, through a serial port, through a binary input, or automatically when a new fault is detected.

Reserved Area for LED Labels

Each relay provides you space to label its LEDs based on how you program them. Labels for the preset annunciations are provided with the relay. Refer to section 5.19.1 for instructions on programming the relay’s LEDs.

Front Serial Data Port

This serial data port allows you to connect a personal computer (PC) directly to the relay. This port conforms to the EIA RS-232 C standard. This feature is typically used in conjunction with DIGSI“software to view event logs and target logs, to monitor measured values, to program the settings, and to analyze captured waveforms.

5.3 General Procedures for Programming the Relay

This section tells you how to do the following operations as part of the programming process:

Select an address

Place the relay in programming mode

￿Select a text-based setting option Program a numeric setting

5-6 July 27, 1995