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Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Appendix E
Detailed CGCM-DLR Unit Tag Descriptions
•
ExcRipple –
This tag reports the Ripple Current component of the
Excitation Current.
•
kW_Hrs –
This tag reports the cumulative kWHours produced by the
Generator.
•
kVAR_Hrs –
This tag reports the cumulative kVARHours produced by
the Generator.
•
kVA_Hrs –
This tag reports the cumulative kVAHours produced by the
Generator.
•
GenFreq –
This tag reports the Generator frequency.
•
BusFreq –
This tag reports the Bus frequency.
•
V_AdjustOffset
– This tag reports the voltage on the VREF terminals of
the CGCM-DLR unit.
•
BusV_Present
- This tag indicates if there is voltage present on the
reference bus.
•
GenV_Present
- This tag indicates if generator voltage is being developed.
•
FreqLessThan10Hz
- This tag indicates that the generator frequency is
less than 10 Hz.
Redundancy
This section describes the redundancy inputs and outputs for the CGCM-DLR
unit.
Redundancy Inputs to CGCM-DLR Unit
•
RedndtTrackRate -
This tag configures the rate at which the Tracking
mode of the redundant CGCM-DLR units matches the primary
CGCM-DLR unit active excitation control mode
•
RedndtTrackDly -
This tag changes the initial delay of the tracking
function of the redundant CGCM-DLR unit to prevent the Tracking
mode from adjusting the non-active modes into an undesirable condition.
For example, while the unit is operating in AVR mode, the sensing VT fails
to open. If the redundant CGCM-DLR unit Tracking mode is allowed to
track instantly the full-on condition that is created by the loss of sensing,
the transfer to the redundant CGCM-DLR unit in an undesirably high
generator voltage. The addition of a tracking delay enables the unit to
transfer to a redundant CGCM-DLR unit without letting the redundant
CGCM-DLR unit follow into a potentially undesirable operating point.