Siemens 7SA511 manual Changing a S tting, You wa to choose is displayed on the LCD

7SA511 Line Protection Relay Chapter 5

While the relay is in programming mode, the solid bar following the address number in the LCD will flash on and off. The relay remains in programming mode until you save the settings as discussed in section 5.3.4.

To place the relay in p ogramming mode, follow this procedure:

1. Press the DirectAddr￿key, type the address number for the setting to be pro- grammed, nd press Enter. The requested address, description, and presetting appear on he display.

2.Press the Passwordkey and enter password ‘000000’. Each character (‘0’) you type app ars as the @ symbol on the display.

3.Press Enter.

4.EnterIf your entry is correct, the message “CW ACCEPTED” appears on the display. Press again. You return to the address where you started in step 1, and the relay is in

programming mode. Go to section 5.3.3, “Changing a Setting.”

5.If your entry is not valid, the message “CODEWORD WRONG “ appears on the dis- play. Begin again with step 2 of this procedure.

5.3.3Changing a S tting

The relay must be in p ogramming mode to change a setting.

There are two types of relay settings:

1.	selectable - parameters or options that are selected from a list
2.	numeric - values that are entered using the numeric keys f the keypad

To change a selectable setting:

1.When the setting displayed is not the one you want, press the Nokey. The next setting option appears on the LCD line 2. Continue to press the Nokey until the setting option

you wa to choose is displayed on the LCD.

2.Press Enterwhen the setting option you want is displayed on the LCD. Continue with section 5.3.4, “Saving New Settings.”

To change a numeric setting:

1.With the existing setting displayed, type in the new value, which must be within the established ange.

2.Press Enter. If you entered a value that is outside of the allowable range, the “VALUE TOO SMALL” or “VALUE TOO BIG” message will appear on the display. Retype the correct value if you receive one of these messages. Otherwise, the value you entered is accepted.

3.Continue with section 5.3.4, “Saving New Settings.”

July 27, 1995 5-9