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R E R6 20
A DVA N C ED R EC LOSER P R OT EC T I O N & CO N T R O L
22. Local HMI
The protection and control relay’s local HMI in-
cludes a large LCD screen standard. The large LCD
display offers full front-panel user-interface func-
tionality with menu navigation and menu views.
The large display offers increased front-panel us-
ability with less menu scrolling and improved infor-
mation overview than with smaller LCD screens. In
addition, the large display includes a user configu-
rable single line diagram (SLD) with position indica-
tion for the associated primary equipment. The
standard configuration of the relay displays, apart
from the primary equipment position, the related
measuring values. Thus all necessary measurement
can be viewed without scrolling through the relay
menu. The SLD view can also be accessed using the
web-browser based user interface. The default SLD
can be modified according to user requirements
using the graphical display editor in PCM600.
The local HMI includes a push button (L/R) for lo-
cal/remote operation of the protection and control
relay. When the relay is in local mode the relay can
only be operated using the local front panel user in-
terface. When the relay is in remote mode, the relay
can execute commands sent from a remote loca-
tion. The relay supports the remote selection of lo-
cal/remote mode via a binary input. This feature fa-
cilitates, for example, the use of an external switch
at the substation to ensure that all relays are in lo-
cal mode during maintenance work and that the re-
closer/circuit breakers cannot be operated re-
motely from the network control center.
The large display is well-suited for all protection
and control relay installations providing an easy
viewing interface.
The protection and control relay provides sixteen
user configurable push buttons that are used for
easy and quick operations, thus eliminating need
for traditional external control switches. These
pushbuttons are accessible in the RER620 for mak-
ing any user defined logic. For each push button
different operation modes such as pulsed, toggled
are available. Each push button includes imbedded
LED and configuration labels template is provided.
By eleven user configurable LEDs, traditional an-
nunciation panel can be replaced. The input signal
for each LED is selected individually with the PCM
600 Signal Matrix Tool (SMT). Each indication LED
on the protection and control relay can be set indi-
vidually to operate in four different sequences
(based on application): two as follow type and two
as latch type. The light from the LEDs can be steady
or flickering. LED label template is provided to suit
your control scheme.
