Section 4 Understand the local human-machineinterfaceAbout this chapterThis chapter describes the display, its keys (buttons) and LEDs that make up the HMI.How the keys are used to navigate the HMI, how to interpret the graphic informationon the LCD and, what the LEDs indicate is explained in the sections that follow.4.1 OverviewThe human machine interface is used to monitor and to some extent control the waythe IED operates. The configuration designer can add functions that alert to eventsrequiring the attention of the operator.ANSI05000525-2 V1 ENFigure 1: 1/1 x 19” case with medium LCD4.2 KeypadThe keypad is used to monitor and operate the IED. The keypad has the same look andfeel in all IEDs. LCD screens and other details may differ but the way the keysfunction is identical.1MRK506276-UUS B Section 4Understand the local human-machine interface19Operator's manual
