Load Sharing - Allen-Bradley 1407-CGCM User Manual

• 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 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 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 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 of
the reference bus
• Raise_Ph - This tag indicates to the host Logix controller that the
synchronizing bus is producing a voltage that is between 0 and 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 between 0 and 180 degrees
ahead of the reference bus.
• ActiveBusA_B – This tag provides feedback as to which reference bus is
being monitored.
This section describes the load sharing inputs and outputs for the CGCM unit.
• kVAR_LS_BridgeEn – This tag is reserved for future use.
• kVAR_LS_En – This tag is reserved for future use: must be set to 1 in
conjunction with kW-LS-EN tag in Rev. 2.x.
• kW_LS_BridgeEn – When this tag is set to 1, the CGCM unit uses the
value of kw_AnalogTargetPUValue as the kW Load Share setpoint to
provide appropriate bias to the analog units connected to the LS lines.
• kW_LS-EN -When this tag is set to 1 the CGCM unit enables the
kilowatt load share function.
Rockwell Automation Publication 1407-UM001H-EN-P - November 2014
Detailed CGCM Unit Tag Descriptions