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Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Appendix E
Detailed CGCM-DLR Unit Tag Descriptions
Over-excitation Limit Inputs to CGCM-DLR Unit
•
OEL_En
– The setting of this tag enables the Over-excitation Limiting
function.
•
OEL_Kg
- This tag lets you adjust the proportional gain of the
Over-excitation limiter. It also determines the response of the limiter to an
Over-excitation event.
•
OEL_Ki
- This tag lets you adjust coarse loop gain and overall gain of the
Over-excitation limiter. This tag determines the characteristic of the
dynamic response to an Over-excitation event.
•
OEL_OnLineHiSetpt
– This tag sets the high current level for the online
over-excitation limiting function. The CGCM-DLR unit over-excitation
limiter limits excitation current at this level. Operation at this level is
allowed for a time no longer than programmed in the
OEL_OnLineHiTimeDly tag.
•
OEL_OnLineHiTimeDly
– This tag sets the amount of time the online
over-excitation limiting function lets the unit operate at the excitation
current level that is programmed in the OEL_OnLineHiSetpt tag.
•
OEL_OnLineMedSetpt
-
This tag sets the medium current level for the
online over-excitation limiting function. Operation at this level is allowed
for a time no longer than programmed in the OEL_OnLineMedTimeDly
tag.
•
OEL_OnLineMedTimeDly
– This tag sets the amount of time the online
over-excitation limiting function lets the unit operate at the excitation
current level that is programmed in the OEL_OnLineMedSetpt tag.
•
OEL_OnLineLoSetpt
-
This tag sets the low current level for the online
over-excitation limiting function. Operation at this level is allowed
continuously.
•
OEL_Off LineHiSetpt
– This tag sets the high current level for the
offline over-excitation limiting function. The CGCM-DLR unit
over-excitation limiter limits excitation current at this level. Operation at
this level is allowed for a time no longer than programmed in the
OEL_OffLineHiTimeDly tag.
•
OEL_Off LineHiTimeDly
- This tag sets the amount of time the offline
over-excitation limiting function lets the unit operate at the excitation
current level that is programmed in the OEL_OffLineHiSetpt tag.
•
OEL_Off LineLoSetpt
- This tag sets the low current level for the offline
over-excitation limiting function. Operation at this level is allowed
continuously.
Over-excitation Limit Outputs from CGCM Unit
•
OEL_Active
– This tag is set to 1 when the exciter is operating in the
Over-excitation Limiting mode.