ABB RELION REX640 - 3.4.2 Functionality; 3.5 Individual virtual LED control LED; 3.5.1 Identification; 3.5.2 Function block

3.4.1 Function block
Figure 39: Function block
3.4.2 Functionality
The protection relay includes a global conditioning function LEDPTRC that is used to
control the virtual Start and Trip indication LEDs.
LED indication control should never be used for tripping purposes.
There is a separate trip logic function TRPPTRC available in the relay
configuration.
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).
3.5 Individual virtual LED control LED
3.5.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE
identification
Individual virtual LED control LED LED LED
1MRS759142 F Basic functions
REX640
Technical Manual
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