18. Local HMI
The IED is available with two optional displays, a
large one and a small one. The large display is
suited for IED installations where the front panel
user interface is frequently used and a single line
diagram is required. The small display is suited for
remotely controlled substations where the IED is
only occasionally accessed locally via the front
panel user interface.
Both LCD displays offer front-panel user interface
functionality with menu navigation and menu
views. However, the large display offers increased
front-panel usability with less menu scrolling and
improved information overview. In addition, the
large display includes a user-configurable single
line diagram (SLD) with position indication for the
associated primary equipment. Depending on the
chosen standard configuration, the IED displays
the related measuring values, apart from the
default single line diagram. The SLD view can also
be accessed using the web-browser based user
interface. The default SLD can be modified
according to user requirements by using the
graphical display editor in PCM600.
The local HMI includes a push button (L/R) for
local/remote operation of the IED. When the IED
is in the local mode, the IED can be operated only
by using the local front panel user interface. When
the IED is in the remote mode, the IED can
execute commands sent from a remote location.
The IED supports the remote selection of local/
remote mode via a binary input. This feature
facilitates, for example, the use of an external
switch at the substation to ensure that all IEDs
are in the local mode during maintenance work
and that the circuit breakers cannot be operated
remotely from the network control centre.
IECA070904 V3 EN
Figure 13. Small display
IECA070901 V3 EN
Figure 14. Large display
Table 62. Small display
Character size
1)
Rows in the view Characters per row
Small, mono-spaced (6x12 pixels) 5 20
Large, variable width (13x14 pixels) 4 8 or more
1) Depending on the selected language
Transformer Protection and Control 1MRS756891 F
RET615
Product version: 4.0
50 ABB
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