ABB Relion 650 Series Technical Manual page 73

1MRK 506 326-UUS B
Activating
signal 1
Activating
signal 2
LED 1
LED 2
Automatic
reset
Manual
reset
IEC01000242 V2 EN-US
Figure 26: Operating sequence 6 (LatchedReset-S), manual reset
4.5.3 Function keys
4.5.3.1 Functionality
Local Human-Machine-Interface (LHMI) has five function buttons, directly to the left of the LCD,
that can be configured either as menu shortcut or control buttons. Each button has an indication
LED that can be configured in the application configuration.
When used as a menu shortcut, a function button provides a fast way to navigate between default
nodes in the menu tree. When used as a control, the button can control a binary signal.
4.5.3.2 Operation principle
Each output on the FNKEYMD1 - FNKEYMD5 function blocks can be controlled from the LHMI
function keys. By pressing a function button on the LHMI, the output status of the actual function
block will change. These binary outputs can in turn be used to control other function blocks, for
example, switch control blocks, binary I/O outputs etc.
FNKEYMD1 - FNKEYMD5 function block also has a number of settings and parameters that control
the behavior of the function block. These settings and parameters are normally set using the PST.
Operating sequence
The operation mode is set individually for each output, either OFF, TOGGLE or PULSED.
Mode 0 (OFF)
This mode always gives the output the value 0 (FALSE). Changes on the IO attribute are ignored.
Line distance protection REL650
Technical manual
Disturbance
tRestart
© Copyright 2011 ABB Power Grids. All rights reserved
Local Human-Machine-Interface LHMI
IEC01000242_2_en.vsd
GUID-BED38E9A-C90D-4B7F-AA20-42821C4F6A1C v2
GUID-977C3829-B19B-457E-8A4D-45317226EF22 v2
GUID-84CA7C61-4F83-4F86-A07F-BF9EC4E309BF v2
Section 4
67