ABB RED650 - Page 8

Local HMI signals............................................................................. 61
Identification................................................................................ 61
Function block............................................................................. 61
Signals.........................................................................................61
Basic part for LED indication module............................................... 62
Identification................................................................................ 62
Function block............................................................................. 62
Signals.........................................................................................63
Settings........................................................................................63
LCD part for HMI function keys control module................................64
Identification................................................................................ 64
Function block............................................................................. 64
Signals.........................................................................................64
Settings........................................................................................65
Operation principle........................................................................... 66
Local HMI.................................................................................... 66
Keypad................................................................................... 67
Display....................................................................................69
LEDs.......................................................................................72
LED configuration alternatives.....................................................74
Functionality .......................................................................... 74
Status LEDs........................................................................... 74
Indication LEDs...................................................................... 74
Function keys.............................................................................. 83
Functionality .......................................................................... 83
Operation principle................................................................. 83
Section 6 Differential protection..................................................... 85
Line differential protection................................................................ 85
Identification................................................................................ 85
Functionality................................................................................ 85
Line differential protection for 3 CT sets, 2-3 line ends,
in-zone transformer LT3CPDIF.............................................. 85
Analog signal transfer for line differential protection.............. 86
Function block............................................................................. 87
Signals.........................................................................................88
Settings........................................................................................90
Monitored data.............................................................................93
Operation principle...................................................................... 93
Algorithm and logic.................................................................93
Time synchronization........................................................... 101
Analog signal communication for line differential protection 102
Open CT detection feature................................................... 104
Binary signal transfer............................................................106
Table of contents
2 Line differential protection RED650 2.2 IEC
Technical manual