4-24 L90 Line Current Differential System GE Multilin4.3 FACEPLATE INTERFACE 4 HUMAN INTERFACES4The following items are required to customize the L90 display module:• Black and white or color printer (color preferred).• Microsoft Word 97 or later software for editing the template.• 1 each of: 8.5" x 11" white paper, exacto knife, ruler, custom display module (GE Multilin Part Number: 1516-0069),and a custom module cover (GE Multilin Part Number: 1502-0015).The following procedure describes how to customize the L90 display module:1. Open the LED panel customization template with Microsoft Word. Add text in places of the LED x text placeholders onthe template(s). Delete unused place holders as required.2. When complete, save the Word file to your local PC for future use.3. Print the template(s) to a local printer.4. From the printout, cut-out the Background Template from the three windows, using the cropmarks as a guide.5. Put the Background Template on top of the custom display module (GE Multilin Part Number: 1513-0069) and snap theclear custom module cover (GE Multilin Part Number: 1502-0015) over it and the templates.4.3.4 DISPLAYAll messages are displayed on a 2 u 20 backlit liquid crystal display (LCD) to make them visible under poor lighting condi-tions. While the keypad and display are not actively being used, the display will default to user-defined messages. Any highpriority event driven message will automatically override the default message and appear on the display.4.3.5 KEYPADDisplay messages are organized into pages under the following headings: actual values, settings, commands, and targets.The MENU key navigates through these pages. Each heading page is broken down further into logical subgroups.The MESSAGE keys navigate through the subgroups. The VALUE keys scroll increment or decrement numerical settingvalues when in programming mode. These keys also scroll through alphanumeric values in the text edit mode. Alterna-tively, values may also be entered with the numeric keypad.The decimal key initiates and advance to the next character in text edit mode or enters a decimal point. The HELP key maybe pressed at any time for context sensitive help messages. The ENTER key stores altered setting values.4.3.6 BREAKER CONTROLa) INTRODUCTIONThe L90 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker,which can be presented on faceplate LEDs, along with a breaker trouble indication. Breaker operations can be manuallyinitiated from faceplate keypad or automatically initiated from a FlexLogic™ operand. A setting is provided to assign namesto each breaker; this user-assigned name is used for the display of related flash messages. These features are provided fortwo breakers; the user may use only those portions of the design relevant to a single breaker, which must be breaker 1.For the following discussion it is assumed the SETTINGS ÖØ SYSTEM SETUP ÖØ BREAKERS Ö BREAKER 1(2) Ö BREAKERFUNCTION setting is "Enabled" for each breaker.b) CONTROL MODE SELECTION AND MONITORINGInstallations may require that a breaker is operated in the three-pole only mode (3-pole), or in the one and three-pole (1-pole) mode, selected by setting. If the mode is selected as three-pole, a single input tracks the breaker open or closed posi-tion. If the mode is selected as one-pole, all three breaker pole states must be input to the relay. These inputs must be inagreement to indicate the position of the breaker.For the following discussion it is assumed the SETTINGS ÖØ SYSTEM SETUP ÖØ BREAKERS Ö BREAKER 1(2) ÖØ BREAKER1(2) PUSH BUTTON CONTROL setting is “Enabled” for each breaker.
