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Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Appendix E
Detailed CGCM-DLR Unit Tag Descriptions
Load Sharing
This section describes the load sharing inputs and outputs for the CGCM-DLR
unit.
Load Sharing Inputs to CGCM Unit
•
kVAR_LS_BridgeEn
– This tag is reserved for future use.
•
kVAR_LS_En
– This tag is reserved for future use.
•
kW_LS_BridgeEn
– When this tag is set to 1, the CGCM-DLR 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-DLR unit enables the
kilowatt load share function.
•
kW_LS_OutV
– This tag sets the voltage that the CGCM-DLR unit
attempts to output from the load-sharing terminals.
•
kVAR_LS_OutV
– This tag is reserved for future use.
•
LS_FS_V
- This tag sets the voltage that the load share output reaches
when the generator is producing 1 p.u. kVA. The base for this calculation is
the calculated generator kVA.
•
LSRate
- This tag configures the time that is required for the load share
output to change the per unit amount.
•
LSLimit
- This tag configures the amount of per unit change that is
allowed in the load share output per unit of time.
•
KWAnalogTargetPUValue
– The value of this tag is used to provide the
bias to the load share lines when the kW_LS_BridgeEN tag is set to 1.
•
KWDigitalTargetPUValue
– This tag is reserved for future use.
•
KVARAnalogTargetPUValue
– This tag is reserved for future use.
•
KVARDigitalTargetPUValue
– This tag is reserved for future use.
Load Sharing Outputs from CGCM-DLR Unit
•
kVAR_LS_Active
– This tag is reserved for future use.
•
kW_LS_Active
- This tag follows the kW_LS_En tag setting in the
Scheduled Write tag.
•
LS_Err
– This tag reports the load share error that is the per unit
percentage difference between the kW_LS_OutV and the
kW_LS_InputV.
•
kW_LS_InputV
– This tag reports the voltage present at the load-sharing
terminals.
•
kW_PU_Load
- This tag reports the total p.u. kVA produced by the active
phases of the generator. The base for this calculation is the configured
generator kVA.
•
kW_AnalogPU_Load
– This tag reports the value of the voltage present
at the load share terminals that are divided by the configured full scale
voltage. It is the system per unit load.