CHAPTER 4: INTERFACES FRONT PANEL INTERFACEL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 4-534Figure 4-55: Main menu on graphical front panel4.2.7 Change settings4.2.7.1 Enhanced and standard front panelsNumerical dataEach numerical setting has its own minimum, maximum, and increment value associated with it. These parameters definewhat values are acceptable for a setting.Two methods of editing and storing a numerical setting value are available.• 0 to 9 and decimal point — The relay numeric keypad works the same as a calculator. A number is entered one digit ata time. The leftmost digit is entered first and the rightmost digit is entered last. Pressing the MESSAGE left arrow orpressing the ESCAPE key, returns the original value to the display.• VALUE keys — The VALUE up arrow increments the displayed value by the step value, up to the maximum valueallowed. While at the maximum value, pressing the VALUE up arrow again allows the setting selection to continueupward from the minimum value. The VALUE down arrow decrements the displayed value by the step value, down tothe minimum value. While at the minimum value, pressing the VALUE down arrow again allows the setting selection tocontinue downward from the maximum value.FLASH MESSAGETIME: 10.0 sFor example, select the SETTINGS PRODUCT SETUP DISPLAY PROPERTIES FLASHMESSAGE TIME setting.MINIMUM: 0.5MAXIMUM: 10.0Press the HELP key to view the minimum and maximum values. Press the key again to view thenext context sensitive help message.FLASH MESSAGETIME: 2.5 sAs an example, set the flash message time setting to 2.5 seconds. Press the appropriate numerickeys in the sequence “2 . 5". The display message changes as the digits are being entered.NEW SETTINGHAS BEEN STOREDUntil ENTER is pressed, editing changes are not registered by the relay. Press ENTER to store thenew value in memory. This flash message momentarily appears as confirmation of the storingprocess. Numerical values that contain decimal places are rounded-off if more decimal place digitsare entered than specified by the step value.
