Rockwell Automation SD3000 Drive Configuration, Programming - Manual (Page 13)

Armature Power Module Rating Selections
You can enter Power Module ratings either manually or automatically through the W/D list.
l W/D List
You can choose from a list of wiring diagrams (W/D list) and have the specified
Module values entered in automatically. Appendix E lists these values.
default Power
. D-C Volts
Enter the maximum output voltage the Power Module will produce. The maximum allowable
voltage is A-C line voltage plus 35%. The rated Power Module voltage cannot exceed 135% of the
A-C input voltage.
l D-C Amps
Enter the Power Module’s 100% output D-C Amp rating. The value can range from IA to the rated
armature amperage (100% D-C amp rating) with a maximum of 8000A. This value is found on the
Power Module’s nameplate and is used in the inverting fault avoidance algorithm. All Reliance
Power Module bridges have 150% rating for 1 minute. See Appendix J for precautions on this
parameter.
I
l CT Turns Ratio X:1
The CT turns ratio parameter defines the input to output ratio of the current transformer in the
Armature Power Module. The ratio is assumed to be X:1. This parameter is found on the Power
Module’s nameplate. Refer to Appendix F for additional information on the relationship between
the CT turns ratio and the armature current feedback resolution.
This parameter is also used to setup the D-C Drive Technology module’s programmable gain
amplifier and to scale armature current feedback into amperes. Refer to Appendix F for additional
information on the relationship between the CT turns ratio and the armature current feedback
resolution.
Motor Armature Rating Selections
l Volts
There is no default value. The maximum value is the rated D-C output voltage. This value is found
on the motor’s nameplate. This voltage is used to calculate when field weakening begins. Refer to
register 100/1 100, bit 11 for more information. The rated motor armature voltage must be no
greater than the voltage rating of the Power Module or 120% of the A-C line voltage. Note that if
you go above 120% of the A-C line voltage you will not be able to achieve full motor speed.
l Amps
There is no default value. This is the full load current that will be generated by the armature Power
Module when the current reference specified by the UDC application task is equal to 100%. This
value can range from 0.1 to 999.9 amps or 1000 to 8000 amps. This value must be less than or
equal to the Power Module’s D-C Amps values.
Refer to Appendix F for additional information on the relationship between the CT turns ratio and
the armature current feedback resolution. Note that if the current is less than 1000A, the current
may be entered in tenths of an ampere. If the current is greater than IOOOA, it may be entered in
amperes.
This current value is used to adjust the programmable gain amplifier in the D-C Power Technology
module and the instanteous overcurrent (IOC) trip point threshold values. Refer to Appendix I for
more information. This value is also used to calculate the IR_DROP.
Max Current Limit
This is the maximum value in percent of the Amps value that may be used for current reference.
This current value is used to adjust the programmable gain amplifier in the D-C Power Technology
module and the threshold values. Refer to Appendix I for more information.
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