Rockwell Automation SA500 AC Power Modules - Manual (Page 44)

4-16 SA500 Power Modules
Step 1. Turn off and lock out power.
Step 2. Disconnect the load from the motor.
Step 3. Connect an analog voltmeter across the motor terminals.
Step 4. Turn power on.
Step 5. Set Gear-in-Speed to four times the motor’s base RPM.
Step 6. Set Overspeed to 110% of Gear-in-Speed.
Step 7. Put the tasks in the rack into run.
Step 8. Set TUNE_IZ@ to 1 (register 101, bit 10).
Step 9. Verify that TUNED_IZ@ = 1. The STATOR_IZ reference table will then fill in
with default values.
Step 10. Reset TUNE_IZ@ to 0 (register 101, bit 10).
Step 11. Set NO_INTR@ to 1 (register 101, bit 0).
Step 12. Use the following equation to calculate the number of speed reference counts
that are equivalent to the motor’s base speed times the desired speed range
(1.1 to 4.0):
Step 13. Determine the number of reference points to be used from the STATOR_IZ
reference table by looking up the number of speed reference counts (from
step 11) in table 4.5. Find the reference point corresponding to the next
highest speed reference value. This is the number of Iz current reference
points that will have to be calibrated and stored in the STATOR_IZ tunables.
Table 4.5 – STATOR_IZ Tunable Values
Reference
Point
1
1. The number of reference points used in the calibration procedure is dependent upon the motor’s base
speed times the speed range (1.1 to 4.0).
Speed Reference
(in counts)
Tunable Where the Iz
Current Value is Saved
1 409 STATOR_IZ0E2%
2 1023
(at maximum speed)
STATOR_IZ1E2%
3 1125 STATOR_IZ2E2%
4 1227 STATOR_IZ3E2%
5 1329 STATOR_IZ4E2%
6 1635 STATOR_IZ5E2%
7 1941 STATOR_IZ6E2%
8 2247 STATOR_IZ7E2%
9 2859 STATOR_IZ8E2%
10 4095 STATOR_IZ9E2%
4095 (Counts)
Gear in – Speed RPM
( )
–
---------------------------------------------------------------------
X (Counts)
Base Speed (RPM) Speed Range
Ч
---------------------------------------------------------------------------------------------- =