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38               ABB  ARC GUARD SYSTEM™ – TVOC-2  INSTALLATION AND MAINTENANCE GUIDE




          5.1    Introduction                                 •  Error LED
                                                                    Error
          The Human Machine Interface, HMI is used for all
          communication with the user and also to confirm any
          changes. If power is lost (max 48 hours) the Time and     − No light in LED indicates that no error is detected in
          Date will be restored. After very long power interruptions   the Arc Guard System.
          the Time and Date are set to a default value and needed to     − Red light in LED signals that error is detected in the
          be set by the user.                                      system and the Internal Relay Fault (IRF), K1 is
                                                                   de-energized.
          This chapter consists of the following sections:
          •  Overview HMI
                                                              •  Com LED
          •  HMI functions
                                                                     Com
          •  HMI menus

                                                                    − Yellow light indicates active communication
          Prerequisites

               WARNING
               The reader should have knowledge and act       5.2.2     HMI Display
               according to applicable safety laws and        The HMI start window displays Name of Arc Guard System,
               standards as well as local safety instructions.
                                                              Time and Date.

          5.2    Overview HMI and HMI-COM
   05

          The HMI module consists of:
                                                                                  ABB TVOC-2
                             2. HMI display.   1. LED signals.
                                                                                    15:09
                                                                                 27-Feb-2009
                                      Arc Guard System  TVOC-2
                                              TM
                                                                                             Menu
                                               Com
             1. LED signals.  Trip
                           Error
                                Back     Ok
             3. Four soft keys.
                                                                                                    1SFC170011M0201
                                                              Figure 42
                                                              HMI Display

                                                 1SFC170011M0201
                                                              The bottom of display shows the tasks assigned to the
          Figure 41
          Overview of the HMI                                 four soft keys.
          5.2.1    LED signals                                5.2.3     Soft keys

          The four LED signals are used for visual signalling and    The four soft keys are used to navigate in the menu.
          they are:                                           Each key is assigned a task, displayed in the window.
          •  Power LED                                        5.3    HMI menu structure


                                                              The menu is structured in five main categories.
                                                              Each category is divided into subcategories. Some
               − Green light in LED indicates that power is on.  subcategories have sub-sub categories. All categories are
               − No light in LED signals no power to HMI.     numbered according to the structure.

          •  Trip LED
                 Trip


               − Red light indicates Trip.
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