Local Hmi; Mounting Methods; Example Of The Lhmi - ABB RET620 Product Manual

Transformer Protection and Control
RET620
Product version: 2.0

17. Local HMI

The IED supports process information and status monitoring
from the IED's local HMI via its display and indication/alarm
LEDs. The local LHMI also enables control operations for the
equipment connected and controlled by the IED, either via
display or via manual push buttons available on the local HMI.
LCD display offers front-panel user interface functionality with
menu navigation and menu views. In addition, the display
includes a user-configurable two-page single-line diagram
(SLD) with a position indication for the associated primary
equipment and primary measurements from the process. The
SLD can be modified according to user requirements by using
Graphical Display Editor in PCM600.
The local HMI also includes 11 programmable LEDs. These
LEDs can be configured to show alarms and indications as
needed by PCM600 graphical configuration tool. The LEDs
include two separately controllable colors, red and green,
making one LED able to indicate better the different states of
the monitored object.
The IED also includes 16 configurable manual push buttons,
which can freely be configured by the PCM600 graphical
configuration tool. These buttons can be configured to control
the IED's internal features e.g. changing setting group,
triggering disturbance recordings or changing operation
modes for functions or to control IED external equipment, e.g.
lowering or raising tap changer, via IED binary outputs. These
buttons also include a small indication LED for each button.
This LED is freely configurable, making it possible to use push
button LEDs to indicate button activities or as additional
indication/alarm LEDs in addition to the 11 programmable
LEDs.
The local HMI includes a push button (L/R) for the 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 remotely. 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 the IEDs are in the
local mode during maintenance work and that the circuit
48
breakers cannot be operated remotely from the network
control center.
GUID-7A40E6B7-F3B0-46CE-8EF1-AAAC3396347F V1 EN
Figure 8.

Example of the LHMI

18. Mounting methods

By means of appropriate mounting accessories, the standard
IED case for the 620 series IED can be flush-mounted, semi-
flush-mounted or wall-mounted.
Furthermore, the IEDs can be mounted in any standard 19"
instrument cabinet by means of 19" mounting panels available
with cut-outs for one IED. Alternatively, the IED can be
mounted in 19" instrument cabinets by means of 4U
Combiflex equipment frames.
Mounting methods:
• Flush mounting
• Semi-flush mounting
• Rack mounting
• Wall mounting
• Mounting to a 19" equipment frame
Panel cut-out for flush mounting:
• Height: 162 ± 1 mm
• Width: 248 ± 1 mm
1MRS757846 A
ABB