Function Block; Functionality; Individual Virtual Led Control Led; Identification - ABB RELION REX640 Technical Manual

Protection and control

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1MRS759142 F

Function block

Figure 39: Function block

The protection relay includes a global conditioning function LEDPTRC that is used to

control the virtual Start and Trip indication LEDs.

LED indication control is preconfigured in a such way that all the protection

function general start and operate signals are combined with this function

(available as output signals OUT_START and OUT_OPERATE). These signals are

internally connected to Device Status on WHMI Dashboard and the Device Status

widget on the LHMI if the widget has been instantiated in the LHMI engineering

phase. LEDPTRC collects and combines phase information from different protection

functions (available as output signals OUT_ST_A /_B /_C and OUT_OPR_A /_B /

_C). There is also combined earth fault information collected from all the earth-

fault functions available in the relay configuration (available as output signals

OUT_ST_NEUT and OUT_OPR_NEUT).

Function description

Individual virtual LED control

Technical Manual

LED indication control should never be used for tripping purposes.

There is a separate trip logic function TRPPTRC available in the relay

configuration.

identification

Basic functions

identification