Manual
224 Rockwell Automation Publication 1407-UM001G-EN-P - April 2013
Appendix E Detailed CGCM Unit Tag Descriptions
• BusA_PhOffset - This tag configures a phase angle added to the measured
bus A phase angle. It is used to compensate for phase shift across sensing
transformers.
• BusA_V_Scaler - This tag configures a multiplier by which the measured
bus A voltage is multiplied. It is used to compensate for ratio error across
sensing transformers.
• BusB_PhOffset - This tag configures a phase angle added to the measured
bus B phase angle. It is used to compensate for phase shift across sensing
transformers.
• BusB_V_Scaler - This tag configures a multiplier by which the measured
bus B voltage is multiplied. It is used to compensate for ratio error across
sensing transformers.
• BusA_B_Select – This tag selects which reference bus the CGCM unit
attempts to synchronize to.
• V_Match Gain-This tag sets the Proportional Gain parameter for Voltage
Matching mode
Synchronizing Outputs from the CGCM Unit
• SyncDeadBus - This tag indicates all conditions have been to allow a
DeadBus synchronization
• AutoSync – This tag follows the AutoSyncEn tag setting in the Scheduled
Write tag.
• CheckSync - This tag follows the CheckSyncEn tag setting in the
Scheduled Write tag.
• PermissiveSync - This tag follows the PermissiveSyncEn tag setting in the
Scheduled Write tag.
• SyncFailure – This tag indicates that the synchronization attempt failed.
• UndefinedSyncMode – This tag indicates that a synchronization was
initiated when none of the synchronization modes were asserted.
• SyncModeConflict – This tag indicates that more than one
Synchronization mode was selected.
• BusRot_ABC_ACB – This tag reports the rotation sequence of the
reference bus in three phase metering. In single phase metering, these bits
reflect the configuration value.
• GenRot_ABC_ACB – This tag reports the rotation sequence of the
generator bus in three 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.