ABB RELION 620 Series Technical Manual page 76

Section 3
Basic functions
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Figure 14: Programmable LEDs on the right side of the display
All the programmable LEDs in the HMI of the protection relay have two colors, green and
red. For each LED, the different colors are individually controllable. For example: LEDx
is green when AR is in progress and red when AR is locked out.
The red has the higher priority than the green.
The control of the LEDs is part of the SMT functionality. Each LED has two control
inputs, one for each color. For the ALARM and OK inputs, the color is selectable as "Green"
or "Red". The color for the ALARM input can be selected with the Alarm colour setting.
The Alarm colour setting is common for all LEDs and has "Red" as default value. The OK
input corresponds to the color that is available, with default being "Green".
Each LED is seen in the Application Configuration tool as an individual function block.
Each LED has user-editable description text for event description. The state ("None",
"OK", "Alarm") of each LED can also be read under a common monitored data view for
programmable LEDs.
The LED status also provides a means for resetting the individual LED via
communication. The LED can also be reset from configuration with the RESET input.
The resetting and clearing function for all LEDs is under the Clear menu.
The menu structure for the programmable LEDs is presented in
color selection setting Alarm colour for all ALARM inputs is in the General menu, while
the LED-specific settings are under the LED-specific menu nodes.
1MAC504801-IB E
Figure 15. The common
620 series ANSI
Technical Manual