ABB REX 521 Technical Reference Manual, General

4
Protection Relay
Technical Reference Manual, General
REX 521
4.1.8.1. High-speed power output (HSPO) .....................24
4.1.8.2. Single-pole power outputs (PO) .........................24
4.1.8.3. Signalling outputs (SO) ......................................25
4.1.9. Testing inputs and outputs ..............................................25
4.1.10.Trip-circuit supervision .....................................................26
4.1.11.Self-supervision ...............................................................28
4.1.11.1.Fault indication ..................................................29
4.1.11.2.Fault indication texts ..........................................30
4.1.12.Serial communication ......................................................31
4.1.12.1.Optical communication port on the rear panel ...32
4.1.12.2.Isolated RS-485 connection on the rear panel ..32
4.1.12.3.Front panel optical connection for a PC .............33
4.1.12.4.The service pin located on the rear panel ..........33
4.1.12.5.SPA bus .............................................................33
4.1.12.6.LON bus ............................................................35
4.1.12.7.IEC 60870-5-103 bus ........................................37
4.1.12.8.Modbus bus .......................................................37
4.1.12.9.DNP 3.0 Bus ......................................................39
4.1.13.Time synchronization .......................................................39
4.1.14.Display panel (HMI) .........................................................40
4.1.15.Indication LEDs ...............................................................41
4.1.16. Alarm LEDs ....................................................................41
4.1.16.1.Special features of alarm LEDs .........................41
4.1.16.2.Writing signal names on alarm LED label ..........42
4.2. Design description ......................................................................44
4.2.1. Technical data ........................................44
4.2.2. Terminal diagram of REX 521: Basic ...............................48
4.2.3. Terminal diagram of REX 521: Medium ...........................49
4.2.4. Terminal diagram of REX 521: High ................................50
4.2.4.1. Terminal diagram of H08 configuration ..............51
4.2.5. Terminal diagram of REX 521: Sensor ............................52
4.2.6. Terminal connections ......................................................53
5. Service ..................................................................................... 56
6. Ordering information ............................................................. 57
7. Revision history of REX 521 .................................................. 58
7.1. Revision identification .................................................................58
7.2. Changes and additions to earlier released revision C ................58
7.3. Configuration, setting, and SA system tools ...............................58
8. Index ........................................................................................ 59
9. Appendix A: IEC 60870-5-103 bus ........................................ 63
9.1. Functions supported by REX 521 ...............................................63

ABB REX 521 Specifications

General

Brand	ABB
Model	REX 521
Category	Other
Language	English