ABB Relion Technical Manual page 90

Section 5
Local Human-Machine-Interface LHMI
84
Input value
Output value
IEC09000332 V1 EN
Figure 28: Sequence diagram for setting PULSED
Input function
All inputs work the same way: When the LHMI is configured so that a certain function
button is of type CONTROL, then the corresponding input on this function block becomes
active, and will light the yellow function button LED when high. This functionality is
active even if the function block operation setting is set to off.
There is an exception for the optional extension EXT1 function keys 7 and 8, since they
are tri-color (they can be red, yellow or green). Each of these LEDs are controlled by three
inputs, which are prioritized in the following order: Red - Yellow - Green
RED
1
-
-
0
t
pulse
IEC09000332_1_en.vsd
INPUT
YELLOW
0/1
1
-
0
1MRK 502 048-UUS A
t
pulse
OUTPUT
GREEN Function key LED color
0/1 red
0/1 yellow
1 green
0 off
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