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
4.2. 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