Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
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Detailed CGCM-DLR Unit Tag Descriptions
Appendix
E
Excitation Control Features
This section describes the excitation control features.
Soft Start Inputs to CGCM-DLR Unit
•
SoftStart_InitLevel
- This tag configures the generator voltage that is
generated immediately after enabling the CGCM-DLR unit. This
parameter is based on a percentage of the nominal generator voltage.
•
SoftStartTime
- This tag configures the time that it takes to go from the
Soft Start Initial Voltage to the nominal generator voltage.
Droop (Reactive Current Compensation) Inputs to CGCM-DLR Unit
•
Droop_CCC_Select
– If Droop is enabled, this tag selects CCC when set
to 1 or Droop when set to 0.
•
V_DroopEn
– This tag configures whether Droop is enabled
•
V_DroopSetpt
- This tag configures the amount of voltage droop that is
experienced during paralleling generator applications.
Under-frequency Limit Inputs to CGCM-DLR Unit
•
VperHz_HiKneeFreq
- The Knee Frequency tag configures the frequency
at which the V/Hz characteristic starts to reduce the generator voltage as a
function of generator frequency.
•
VperHz_HiSlope
- The Upper Slope tag configures the rate at which the
V/Hz characteristic reduces the generator voltage as a function of
generator frequency. The steeper the slope the faster the prime mover is
unloaded and smaller the frequency variations are experienced during load
applications.
•
VperHz_LoKneeFreq
- The Knee Frequency tag configures the frequency
at which the V/Hz characteristic starts to reduce the generator voltage as a
function of generator frequency.
•
VperHz_LoSlope
- The Lower Slope tag configures the rate at which the
V/Hz characteristic reduces the generator voltage as a function of
generator frequency after the Lower Knee Frequency is exceeded.
Cross-current Compensation Inputs to CGCM-DLR Unit
•
Droop_CCC_Select
– If Droop is enabled, this bit selects CCC when set
to 1 or Droop when set to 0.
•
CrossCurrentGain
- This setting lets you adjust the gain of the cross
current input. The actual value that is measured by the cross current input
is multiplied by this setting. It can be used to improve the VAR sharing
between machines that are connected in cross current.