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Setting knobs
Display
Display main menu
ABB Automation
Most of the operating values and operating
times are set by means of the setting knobs on
the front panel of the relay module. Each setting
knob has its own (LED) indicator which glows
when the concerned setting value is shown on
the display.
If a setting knob is turned while the display is
showing another measured or set value, the
value being set automatically appears on the
display. Simultaneously, the indicator for the
concerned setting starts glowing.
The measured and set values as well as the data
recorded are shown on the display of the meas-
uring relay module. The display consists of four
digits. The three digits (green) to the right
indicate the measured, set or stored value and
the digit at the extreme left (red) the number of
the register. The measured or set value displayed
is indicated by a yellow LED indicator. The
number of the register glows only when a stored
value is displayed.
All the data required during normal operating
conditions are accessible from the main menu
which presents the measured values in real-time,
the normal setting knob settings as well as the
most important memorized data.
The data to be shown in the main menu are
selected to the display in a certain sequence by
means of the STEP button. When pressing the
STEP button for about one second, the display
moves forward in the display sequence. When
pressing it for about 0.5 seconds, the display
moves backwards in the display sequence.
In addition to the settings made with the setting
knobs, most modules allow so called remote
setting. This means that the settings made by
means of the setting knobs of the module and
the checksum of the programming switchgroup
may be altered through an instruction over the
serial communication bus. Remote setting is
possible if the password in the register A is
known, and the remote settings are not acti-
vated, i.e. parameter V150=0. The circumstance
that the remote settings are activated is shown
with a flashing light of the indicator of the
setting knob, the value of which currently is
being displayed.
When the auxiliary voltage is connected to a
measuring relay module, the module initially
tests the display by stepping through the digits
1...9 for about 15 seconds. When the test is
finished the display turns dark. The testing can
be interrupted by pressing the STEP button.
The protective functions of the module are
operative throughout the testing.
From a dark display only forward movement is
possible. When keeping the STEP button de-
pressed, the display is continuously moving in
forward direction stopping for a while at the
dark point.
Unless the display is switched off by stepping to
the dark point, it remains activated for about 5
minutes from the last pressing of the STEP
button and then goes out.
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