ABB RELION REX640 Technical Manual page 119

Protection and control

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1MRS759142 F

Figure 42: Programmable LEDs status in WHMI

Programmable LEDs are available only when at least one LED has been instantiated

and the OK or ALARM signal is connected in Application Configuration in PCM600.

All the programmable LEDs on the protection relay's HMI have two colors, green and

red. For each LED, the different colors are individually controllable.

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. When a LED is in the

alarming state, a bell symbol is shown on the LHMI next to the title of the

Programmable LEDs page.

Each LED is seen in Application Configuration as an individual function block. Each

LED has a 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 available at the left side of the

Programmable LEDs page and under the Clear menu.

The menu structure for the programmable LEDs is presented in

common color selection setting

menu, while the LED-specific settings are under the LED-specific menu nodes.

Programmable LEDs

Figure 43: Menu structure

Technical Manual

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

Alarm colour for all ALARM inputs is in the General

Alarm colour setting, the default value being

LatchedAck-F-S

Programmable LED description

Basic functions