Delta EB3000 Series User Manual page 131

Chapter 6 Tuning ProcessEB3000
1. Unload before auto-tuning.
2. If the drive controls the brake, the drive can auto-tune according to the normal sequence
after you complete the wiring and set the brake control parameters.
3. If the host controller controls the brake, make sure that the brake is in release status
before auto-tuning.
 Pr.00-30=8: Auto-measures the angle between the magnetic pole and the PG origin. Pay
attention to the following notes when measuring: (static test)
1. The motor can be loaded or unloaded before auto-tuning.
2. See the reference table for auto-tuning for Pr.00-20 (PG Signal Type). When Pr.00-
20=3, set Pr.03-90 bit9=1.
3. If the drive controls the brake, the drive can auto-tune according to the normal sequence
after you complete the wiring and set the brake control parameters.
4. If the host controller controls the brake, make sure that the brake is in release status
before auto-tuning.
5. Make sure the setting for Pr.00-23 is correct. Incorrectly setting Pr.00-23 causes
incorrect positioning of the magnetic pole and results in the wrong angle between the
magnetic pole and PG origin.
NOTE:
 In vector control mode, do not run motors in parallel.
 Do not use vector control mode if the motor rated power exceeds the rated power for
the AC motor drive.
 The no-load current is usually 20–50% of the rated current.
 The rated speed cannot be larger or equal to 120 f/p (f: output frequency Pr.00-13, p:
Number of Motor Poles Pr.00-15).
 After auto-tuning is finished, start the drive again to make it operate when the auto-
tuning command source is the external terminal.
 Note that if the contactor and brake are not controlled by the AC motor drive, release it
manually.
 Set Pr.00-30=6 (unloaded motor) for accurate calculation. If you need to execute this
function with a loaded motor, balance the carriage before execution.
 If you do not balance the carriage in a measured environment, you can execute this
function with a loaded motor by setting Pr.00-30=8. It will have a difference of 15–30
different encoder types.
 "Auto Tuning Err" displays on the keyboard panel when stopping due to an AC motor
drive fault or human error, which means the detection fails. Check the wiring
connections of the AC motor drive. If "PG Fbk Error" displays on the keyboard panel,
change the setting of Pr.00-23 (if set to 1, change it to 2). If "PG Fbk Loss" displays on
the keyboard panel, check the feedback of Z-phase pulse.
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