ABB Relion 611 Series, Technical Manual

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Table 23: COM2 serial communication settings
Parameter Values (Range) Unit Step Default Description
Fiber mode 0=No fiber
2=Fiber optic
0=No fiber Fiber mode
Serial mode 1=RS485 2Wire
2=RS485 4Wire
3=RS232 no
handshake
4=RS232 with
handshake
1=RS485 2Wire Serial mode
CTS delay 0...60000 ms 1 0 CTS delay
RTS delay 0...60000 ms 1 0 RTS delay
Baudrate 1=300
2=600
3=1200
4=2400
5=4800
6=9600
7=19200
8=38400
9=57600
10=115200
6=9600 Baudrate
3.2 Self-supervision
The protection relay's extensive self-supervision system continuously supervises the
software and the electronics. It handles run-time fault situation and informs the user
about a fault via the LHMI and through the communication channels.
There are two types of fault indications.
• Internal faults
• Warnings
3.2.1 Internal faults
When an internal relay fault is detected, relay protection operation is disabled, the
green Ready LED begins to flash and the self-supervision output contact is activated.
Internal fault indications have the highest priority on the LHMI. None
of the other LHMI indications can override the internal fault
indication.
An indication about the fault is shown as a message on the LHMI. The text
Internal Fault
with an additional text message, a code, date and time, is shown
to indicate the fault type.
1MRS757454 D
Section 3
Basic functions
611 series 45
Technical Manual