ABB RELION REX640 Technical Manual page 114

Section 3
Basic functions
108
"Red". The OK input corresponds to the color that is available, with the default value
being "Green".
Changing the Alarm colour setting to "Green" changes the color behavior of the OK
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 Alarm colour for all ALARM inputs is in the General
menu, while the LED-specific settings are under the LED-specific menu nodes.
Programmable LEDs
GUID-03CC96F0-80DF-466A-B62A-A79D16013128 V1 EN
Figure 30: Menu structure
Alarm mode alternatives
The ALARM input behavior can be selected with the alarm mode settings from the
alternatives "Follow-S", "Follow-F", "Latched-S" and "LatchedAck-F-S". The OK
input behavior is always according to "Follow-S". The alarm input latched modes can
be cleared with the reset input in the application logic.
GUID-AF0D62FA-B767-4146-B211-3DD2FCF55B55 V1 EN
Figure 31: Symbols used in the sequence diagrams
General Alarm color
LED 1
Alarm mode
LED 2
Description
1MRS759142 C
Figure 30. The
Red
Green
Follow-S
Follow-F
Latched-S
LatchedAck-F-S
Programmable LED description
Technical Manual
REX640