ABB Relion 650 Series Technical Manual page 528

Section 13
Station communication
522
IED
Preprocessing blocks
SMAI
TRM module
110 V 1 A 1 A
IEC08000072 V3 EN-US
Figure 244: Example of signal path for sampled analogue values from MU and
conventional CT/VT
The function has the following alarm signals:
• MUDATA:
• Ok[0] indicates that the merging unit samples are received from the
merging unit and are accepted.
• ERROR[1] indicates that the merging unit samples are generated by
internal substitution.
• SYNCH:
• OK[0] indicates
Application
Preprocessing blocks
SMAI
MU1 MU2
Access Point
IEC/UCA 61850-9-2LE
Ethernet Switch
IEC/UCA 61850-9-2LE
Merging
1PPS
Unit
Combi
CT CT
Sensor
Conventional VT
1MRK 511 424-UEN B
Station Wide
GPS Clock
Splitter
Electrical-to-
Optical Converter
1PPS
IEC/UCA 61850-9-2LE
Merging
1PPS
Unit
Combi
Sensor
IEC080000723enOriginal.vsd
Bay control REC650 2.2 IEC
Technical manual