Functionality - ABB RELION 620 Series Technical Manual

Protection and control

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Basic functions

Function block

Figure 22: Function block

Functionality

The programmable LEDs reside on the right side of the display on the LHMI.

Figure 23: 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.

Each LED has two control inputs, ALARM and OK. The color setting is common for

all the LEDs. It is controlled with the

"Red". The OK input corresponds to the color that is available, with the default value

being "Green".

Changing the

inputs to red.

The ALARM input has a higher priority than the OK input.

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.

Alarm colour setting to "Green" changes the color behavior of the OK

Alarm colour setting, the default value being

1MRS757644 H

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