ABB Switzerland Ltd REG 316*4 1MRB520049-Uen / Rev. E
5-108
trip has reset and only extinguish after they have been actively
reset (see Section 5.13.8.6).
green yellow red
Fig. 5.86 LED statuses for a general trip
5.13.4.7. Fatal device error
All three LED’s flash when a serious error is detected that dis-
ables the device.
green yellow red
Fig. 5.87 LED statuses for a fatal error
5.13.5. Text display (LCD)
5.13.5.1. General
Upper and lower case characters are displayed and all the char-
acters needed for German, English and French are installed.
The display of variables (measurements, binary signals etc.) is
refreshed at intervals of approximately a second.
5.13.5.2. Language
The LDU supports a number of languages, however, the lan-
guage used by the HMI on the PC during commissioning is the
language set on the LDU and cannot be changed during normal
operation. The LDU language is programmed automatically to
that of the HMI on the PC. Care must therefore be taken when
changing parameter settings that the HMI on the PC is operating
in the desired language.
5.13.5.3. Interdependencies
The menus are not dependent on changes in the process or the
status of the device, i.e. a menu text remains on the display until
the user selects a different menu item. The only exceptions are
the start-up procedure and downloading parameter settings from
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