ABB REU 523 - Page 4

4
1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
4.1.8.1. Function .............................................................30
4.1.8.2. Disturbance recorder data .................................30
4.1.8.3. Control and indication of disturbance recorder
status .................................................................31
4.1.8.4. Triggering ...........................................................32
4.1.8.5. Settings and unloading ......................................32
4.1.8.6. Event code of the disturbance recorder .............32
4.1.9. Recorded data of the last events .....................................32
4.1.10.External serial communication .........................................33
4.1.10.1.Communication ports .........................................33
4.1.10.2.IEC 60870-5-103 remote communication
protocol .............................................................. 34
4.1.10.3.Event codes .......................................................37
4.1.10.4.SPA bus communication protocol parameters ...39
4.1.11.Self-supervision (IRF) system ..........................................46
4.1.12.Relay parameterization ....................................................46
4.2. Design description ......................................................................47
4.2.1. Input/output connections .................................................47
4.2.2. Serial communication connections ..................................49
4.2.3. Technical data ................................................................50
5. Ordering information ............................................................. 54
6. References .............................................................................. 55
7. Index ........................................................................................ 56
8. Abbreviations ......................................................................... 59
9. Check lists ......................................................................... 60
10.Customer feedback ............................................................... 63