ABB Relion 670 series - Page 1128

18.4.7.5 Monitored data
PID-4074-MONITOREDDATA v4
Table 822: PRPSTATUS Monitored data
Name Type Values (Range) Unit Description
AB Beh INTEGER 2=Blocked
3=Test
4=Test blocked
5=Off
1=On
- AB Link Beh
CD Beh INTEGER 1=On
2=Blocked
3=Test
4=Test blocked
5=Off
- CD Link Beh
PRP Beh INTEGER 2=Blocked
3=Test
4=Test blocked
5=Off
1=On
- PRP Beh
18.4.7.6 Principle of operation
GUID-545BD854-36AA-4606-B79B-A5FF73B1A4CB v3.1.1
The communication is performed in parallel, that is the same data package is transmitted on both
channels simultaneously. The received package identity from one channel is compared with data
package identity from the other channel, if they are the same, the last package is discarded.
The PRPSTATUS function block supervise the redundant communication on the two channels. If no
data package has been received on one (or both) channels within the last 10 s, the output PRP-A
LINK and/or PRP-B LINK is set to 0 which indicates an error.
Section 18 1MRK 502 066-UUS B
Station communication
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Technical manual