ABB Relion 670 series - Writing User Management Settings to IED; Reading User Management Settings from IED

Positions for the main and redundant channels are predefined in the basic
configuration, and they cannot be changed. Only slots 306, 313 and 323 can be set
as redundant line differential communication channels via PCM600.
Signal matrix for the redundant channel must be empty. It is updated automatically
when the main channel is lost.
IEC10000068 V1 EN-US
Figure 20: Signal matrix for one main channel
IEC10000069 V1 EN-US
Figure 21: Signal matrix for one main and one redundant channel
Figure 22 shows a setting example when using a redundant channel.
1MRK 505 382-UEN B Section 4
Analog and binary signal transfer for line differential protection
Communication set-up 670/650 series 2.2 33
Application Guide