Rockwell Automation SA3100 Distributed Power System Drv Config,Program - Manual (Page 150)

Commissioning Procedure for Non-Constant Power Algorithim Operation J-3
• After using the reference point data for Drive A (register 101), use the reference
point data for Drive B register (1101).
• Ensure that the vector orientation alignment request bit (bit 6, 0040h) is set in
register 1100.
• The IGNn! values for the A and B drives should be the same. The acquisition of
data should be done with both drives to verify that the magnitudes of the values are
similar. After the acquisition is done, the IGNn! values from Drive A should be used
for Drive B.
Present Commissioning Procedure -
SA3000 AC Vector w/ Constant Power:
Tuning the Magnetizing Current Reference Table - The latest version of the
SA3000 Constant Power Operating System has the capability of accomodating
temperature changes via modification of the slip value. This modification of the slip
value is accomplished through the use of a PMI reference magnetizing current table.
It enables the PMI to determine when a load change has occurred. When a load
change occurs, the output of the flux loop will increase. This increased output is
compared to the value from the reference table. The difference between the two
generates a change in slip. The change in slip causes a reduction in flux loop output,
which in turn, cause the flux loop output to be the correct value for the magnetizing
current value at that point in the speed range.
In order to tune or calibrate this table, a speed loop must be implemented in the UDC
module. This speed loop must be set up so that a value of 4095 counts of speed
reference corresponds to the maximum speed of the drive (i.e. four times the
maximum voltage speed).
Using this speed loop, it is possible to utilize a maximum of 10 points in the speed
reference curve. You will need all ten reference points if you are using a four to one
range in your application. You do not need to use all ten reference points if your
application does not reach the four to one speed range. The following table indicates
the speed reference points at which data is obtained.
Ref. Point Speed Reference Counts Value Save Location Units
One 409 Stator_ iZ_e1% (RMS amps * 10)
Two 1023 (equal to max v speed) IGN1! (Note peak amps* 100)
Three 1125 IGN2!
Four 1227 IGN3!
Five 1329 IGN4!
Six 1635 IGN5!
Seven 1941 IGN6!
Eight 2247 IGN7!
Nine 2859 IGN8!
Ten 4095 IGN9!