Human Machine Interface; Basic Ied Functions - ABB REG650 Product Manual

Generator protection REG650
Product version: 1.3

14. Human Machine interface

Local HMI
IEC12000175 V1 EN
Figure 8. Local human-machine interface
The LHMI of the IED contains the following elements:
• Display (LCD)
• Buttons
• LED indicators
• Communication port for PCM600
The LHMI is used for setting, monitoring and controlling.
The Local human machine interface, LHMI includes a graphical
monochrome LCD with a resolution of 320x240 pixels. The
character size may vary depending on selected language. The
amount of characters and rows fitting the view depends on the
character size and the view that is shown.
The LHMI is simple and easy to understand. The whole front
plate is divided into zones, each with a well-defined
functionality:
• Status indication LEDs
• Alarm indication LEDs which can indicate three states with
the colors green, yellow and red, with user defined and
also printable label. All LEDs are configurable from the
PCM600 tool
• Liquid crystal display (LCD)
• Keypad with push buttons for control and navigation
purposes, switch for selection between local and remote
control and reset
• Five user programmable function buttons
• An isolated RJ45 communication port for PCM600

15. Basic IED functions

Self supervision with internal event list
The Self supervision with internal event list INTERRSIG and
SELFSUPEVLST function reacts to internal system events
generated by the different built-in self-supervision elements.
The internal events are saved in an internal event list presented
on the LHMI and in PCM600 event viewer tool.
Time synchronization
Use a common global source for example GPS time
synchronization inside each substation as well as inside the
area of the utility responsibility to achieve a common time base
ABB
for the IEDs in a protection and control system. This makes
comparison and analysis of events and disturbance data
between all IEDs in the power system possible.
Time-tagging of internal events and disturbances are an
excellent help when evaluating faults. Without time
synchronization, only the events within the IED can be
compared to one another. With time synchronization, events
and disturbances within the entire station, and even between
line ends, can be compared during evaluation.
In the IED, the internal time can be synchronized from a number
of sources:
• SNTP
• IRIG-B
• DNP
• IEC60870-5-103
Parameter setting groups ACTVGRP
Use the four different groups of settings to optimize the IED
operation for different power system conditions. Creating and
switching between fine-tuned setting sets, either from the local
HMI or configurable binary inputs, results in a highly adaptable
IED that can be applied to a variety of power system scenarios.
Test mode functionality TESTMODE
The protection and control IEDs may have many included
functions. To make the testing procedure easier, the IEDs
include the feature that allows individual blocking of all
functions except the function(s) the shall be tested.
There are two ways of entering the test mode:
• By configuration, activating an input signal of the function
block TESTMODE
• By setting the IED in test mode in the local HMI
While the IED is in test mode, all protection functions are
blocked.
Any function can be unblocked individually regarding
functionality and event signaling. This enables the user to follow
the operation of one or several related functions to check
functionality and to check parts of the configuration, and so on.
Forcing of binary outputs, wether from the LHMI or from the
PCM600 is only possible when the IED is in test mode.
Change lock function CHNGLCK
Change lock function CHNGLCK is used to block further
changes to the IED configuration and settings once the
commissioning is complete. The purpose is to block inadvertent
IED configuration changes beyond a certain point in time.
The change lock function activation is normally connected to a
binary input.
1MRK 502 050-BEN B
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