AND
O:42|T:2.5|I:3
B1
B2
O
AND
O:43|T:2.5|I:2
B1
B2
O
OR
O:48|T:2.5|I:7
B1
B2
O
FALSE
FALSE
CONTROL_LOCAL
CONTROL_REMOTE
CBXCBR1_52-1_AU_CLOSE
GUID-BC662286-4C38-4CC0-B1AB-6C81A5668F27 V1 EN
Figure 38: External closing command for circuit breaker
AND
O:44|T:2.5|I:1
B1
B2
O
AND
O:45|T:2.5|I:0
B1
B2
O
OR
O:49|T:2.5|I:6
B1
B2
O
FALSE
FALSE
CONTROL_LOCAL
CONTROL_REMOTE
CBXCBR1_52-1_AU_OPEN
GUID-86D156FC-CADB-49D4-B52A-119ED2D7FD22 V1 EN
Figure 39: External opening command for circuit breaker
3.3.3.5 Functional diagrams for measurement functions
The phase current inputs to the relay are measured by the three-phase current
measurement function CMMXU1. The current input is connected to the X120 card in the
back panel. Similarly, the sequence current measurement CSMSQI1 measures the
sequence current and the residual current measurement RESCMMXU1 measures the
residual current.
The measurements can be seen from the LHMI and they are available under the
measurement option in the menu selection. Based on the settings, function blocks can
generate low alarm or warning and high alarm or warning signals for the measured current
values.
CMMXU1
O:107|T:5|I:1
BLOCK HIGH_ALARM
HIGH_WARN
LOW_WARN
LOW_ALARM
GUID-1C55C009-67CB-45E0-81D8-29B80AF77560 V1 EN
Figure 40: Three-phase current measurement
1MAC109016-MB C Section 3
REF615 standard configurations
REF615 ANSI 61
Application Manual
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