ABB REF 542plus Operator's Manual page 22

REF 542plus REF 542plus
22
Multifunction Protection and Switchgear Control Unit
Operator's manual
Fig. 5.-2 Changing the language displayed on the HMI
The former HMI of the REF 542plus (HMI Version V4) can still be
applied together with the base unit having the new firmware of release
2.5. provided the firmware of the HMI is upgraded accordingly. After
upgrading the firmware the HMI V4 behaves almost the same as the
new international HMI V5. Due to the low resolution of the LCD on
the former HMI, the displaying certain languages, such as Chinese, is
not possible. Other languages, such as Russian with cyrillic characters,
can be used as the first language.
Starting from release 2.5 SP1, an optional Ethernet module for the
IEC 61850 communication protocol can be applied. Therefore, new
menu items appear on the HMI display. Because of the limitation of the
existing memory, the use of the HMI version V4 is not reasonable and
it is not recommended anymore.
The design of the new international HMI V5 has been improved by
extending the existing memory on the related mainboard. The
information files for both languages are stored on the HMI after the
download of the configuration file by the operating tool. The display of
the language file is immediately available after the language change. In
case of HMI V4 the language files are stored in the base unit. If the
1MRS755869
A060409