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• GenRot_ABC_ACB – This tag reports the rotation sequence of the
generator bus in 3-phase metering. In single phase metering, these bits
reflect the configuration value.
• PhRotMatch – This tag reports that the phase rotation between the two
busses to be synchronized matches, and is acceptable for synchronizing.
• V_Match - This tag reports that the voltage difference between the two
busses is within the configured acceptable range.
• FreqMatch - This tag reports that the frequency difference between the
two busses is within the configured acceptable range.
• PhMatch - This tag reports that the phase difference between the two
busses is within the configured acceptable range.
• V_MatchErr – This tag reports the percentage difference in voltage
between the two busses to be synchronized.
• FreqMatchErr – This tag reports the difference in frequency between the
two busses to be synchronized.
• PhMatchErr – This tag reports the phase difference between the two
busses to be synchronized.
• CloseBusA_Brkr – When this tag is 1, it indicates that synchronization
has reached a status where it is acceptable to close the breaker to Bus A.
• CloseBusB_Brkr – When this tag is 1, it indicates that synchronization
has reached a status where it is acceptable to close the breaker to Bus B.
• Raise_V – This tag indicates to the host Logix controller that the
synchronizing bus has a lower voltage level than that level of the reference
bus.
• Lower_V – This tag indicates to the host Logix controller that the
synchronizing bus has a lower voltage level than that level of the reference
bus.
• Raise_Freq - This tag indicates to the host Logix controller that the
synchronizing bus is producing voltage at a frequency lower than that
frequency of the reference bus.
• Lower_Freq - This tag indicates to the host Logix controller that the
synchronizing bus is producing voltage at a frequency higher than that
frequency of the reference bus
• Raise_Ph - This tag indicates to the host Logix controller that the
synchronizing bus is producing a voltage that is 0...180 degrees behind the
reference bus.
• Lower_Ph - This tag indicates to the host Logix controller that the
synchronizing bus is producing a voltage that is 0...180 degrees ahead of
the reference bus.
• ActiveBusA_B – This tag provides feedback as to which reference bus is
being monitored.
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Detailed CGCM-DLR Unit Tag Descriptions
Appendix E
239
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