ABB REX 521 Technical Reference Manual, Standard Configurations page 4

REX 521
4
Protection Relay
Technical Reference Manual, Standard Configurations
4.1. Digital inputs ............................................................................... 53
4.1.1. Input selectors ................................................................. 54
4.1.2. Input switchgroups (SWGRP) .......................................... 55
4.1.3. Input signals .................................................................... 56
4.2. Function blocks in the overview diagrams of the signal routings 56
4.2.1. Function blocks ................................................................ 57
4.3. Output switchgroups (SWGRP) .................................................. 58
4.3.1. Output selectors .............................................................. 58
4.4. Other functions described in signal overview diagrams .............. 59
4.4.1. Lockout function .............................................................. 59
5. Parametrization of the digital inputs .................................... 62
5.1. Selectors ..................................................................................... 62
5.1.1. Reset ............................................................................... 62
5.1.2. Group ............................................................................... 62
5.1.3. Blocking ........................................................................... 62
5.1.4. Disturbance recorder trigger ............................................ 62
5.1.5. Power quality trigger ........................................................ 63
5.1.6. Master trip ........................................................................ 63
5.1.7. External trip ..................................................................... 63
5.1.8. Lockout reset ................................................................... 63
5.1.9. Local/Remote .................................................................. 63
5.1.10.Close enable .................................................................... 63
5.1.11.Direct control (Open/Close) ............................................. 63
5.1.12.Object indication .............................................................. 63
5.1.13.Time synchronization ....................................................... 63
5.1.14.AR inhibit, AR on input, start AR ...................................... 64
5.1.15.BACTRL (Basic angle control) ......................................... 64
5.1.16.Logic input 1...3 ............................................................... 64
5.2. Interlocking ................................................................................. 64
5.2.1. Interlocking options .......................................................... 64
6. Default settings ...................................................................... 68
7. Function block descriptions ................................................. 74
7.1. Protection .................................................................................... 74
7.1.1. 3I>, 3I>> and 3I>>> ......................................................... 74
7.1.2. Io>, Io>> and Io>>> ......................................................... 76
7.1.3. Io>->, Io>>-> and Io>>>-> ............................................... 78
7.1.4. 3I>-> and 3I>>-> .............................................................. 79
7.1.5. 3I2f> ................................................................................. 84
7.1.6. Iub> .................................................................................. 84
7.1.7. 3Ith> ................................................................................. 85
7.1.8. O->I .................................................................................. 86
7.1.9. f1 and f2 ........................................................................... 88
1MRS 751802-MUM