ABB Industrial IT enabled REX 521 Technical Reference Manual, General page 4

5(; 
4
3URWHFWLRQ 5HOD\
Technical Reference Manual, General
4.1.12.1.Optical communication port on the rear panel ... 26
4.1.12.2.Isolated RS-485 connection on the rear panel .. 27
4.1.12.3.Front panel optical connection for a PC ............. 27
4.1.12.4.The service pin located on the rear panel .......... 27
4.1.12.5.SPA bus ............................................................. 27
4.1.12.6.LON bus ............................................................ 29
4.1.12.7.IEC 60870-5-103 bus ........................................ 31
4.1.12.8.Modbus bus ....................................................... 31
4.1.13.Time synchronization ....................................................... 32
4.1.14.Display panel (HMI) ......................................................... 33
4.1.15.Indication LEDs ............................................................... 34
4.1.16. Alarm LEDs .................................................................... 34
4.1.16.1.Special features of alarm LEDs ......................... 34
4.1.16.2.Writing signal names on alarm LED label .......... 35
4.2. Design description ...................................................................... 37
4.2.1. Technical data
4.2.2. Terminal diagram of REX 521: Basic ............................... 41
4.2.3. Terminal diagram of REX 521: Medium ........................... 42
4.2.4. Terminal diagram of REX 521: High ................................ 43
4.2.5. Terminal diagram of REX 521: Sensor ............................ 44
4.2.6. Terminal connections ...................................................... 45
 6HUYLFH  
 2UGHULQJ LQIRUPDWLRQ  
 5HYLVLRQ KLVWRU\ RI 5(;   
7.1. Revision identification ................................................................. 49
7.2. Changes and additions to earlier released revision B ................ 49
7.3. Configuration, setting, and SA system tools ............................... 50
 5HIHUHQFHV  
 ,QGH[  
$SSHQGL[ $ ,(&  EXV  
10.1.Functions supported by REX 521 .............................................. 55
10.2.General principle of application data mapping ........................... 55
10.3.Principle of the protection functions mapping ............................ 56
10.4.Class 2 data ............................................................................... 56
10.5.Default mappings ....................................................................... 57
$SSHQGL[ % 3DUDPHWHUV YLVLEOH RQO\ LQ WKH UHOD\  
$SSHQGL[ & 3DUDPHWHUV ZKLFK FDXVH UHVHW  
$SSHQGL[ ' 3DUDPHWHUV ZKLFK UHTXLUH WHVW PRGH  
$SSHQGL[ ( $EEUHYLDWLRQV  
........................................................ 37
1MRS 751108-MUM