Siemens 7SA511 manual Addr, Using the Operator Panel to Display Information

7SA511 Line Protection Relay Chapter 6

6. Displaying System and Relay Information

This chapter describes the system and relay information available and tells you how to use the relay’s operator panel to display the information. When prompted, the operator panel LCD can display the following information:

Event log for the relay during normal and fault conditions

Target log for the last three network faults

Target log for the last three ground faults in ungrounded systems

￿Measured values of the protected system (in grounded and ungrounded systems) Circuit breaker operation statistics

The system and relay information is also accessible using analysis software if the relay is connected to a PC through the front port. In addition, you can also display actual waveforms of the last fault record when DIGSI® analysis software is used on a PC and the relay is programmed for waveform capture (see section 5.5).

Table 6-1 lists the address blocks and descriptions that are used to display the system and relay information. The relay password is not required to display relay data.

Table 6-1. Address Blocks Used to Display System and Relay Information.

Addr.

5100

5200

5300

5400

5500

5600

5700

5800

Description

Event log. The relay stores the last 50 messages that displayed.

Target history for the last (most recent) fault.

Target history for the second to last fault.

Target history for the third to last fault.

Ground fault target history for relay models with ground fault detection for ungrounded systems (model number 7SA511*-**A5*-1***).

Circuit breaker operation statistics.

Measured phase and neutral currents, voltages, and apparent power of the pro ected system.

Ground fault measured values for relay models with ground fault detection for ungrounded systems (model number 7SA511*-**A5*-1***).

The tables in this chapter identify, by address block, all of the messages and values available for display on the LCD. Whether or not some information can be displayed is dependent on the model and configuration of the individual relay. The last section in this chapter discusses the waveform capture feature.

6.1 Using the Operator Panel to Display Information

All of the m ssages available for display in the operator panel LCD are within address block 5000. Press the Eventkey to go directly to address block 5000. You can then use the navigation keys to

July 27, 1995 6-3