Rockwell Automation PowerFlex series - Page 223

PowerFlex Digital DC Drive User Manual - Publication 20P-UM001C-EN-P - July 2008
Application Notes C-27
3. Configure the following parameters:
❏ Set Par 497 [Field Reg Enable] = 1 “Enabled” (default)
❏ Set Par 469 [Field Mode Sel] = 1 “Field Weaken”
❏ Set Par 498 [Force Min Field] = 1 “Enabled”
4. Configure the following Test Generator parameters:
❏ Set Par 58 [TstGen Output] = 3 “Field Ref”
❏ Set Par 60 [TstGen Amplitude] = 70% of the field rated current of
the motor (this setting allows the system overshoot).
5. Increase the value of the Par 91 [Fld Reg Kp] until the overshoot of the field
current (displayed in Par 234 [Fld Current Pct]) is lower than 4%.
6. Increase the value of Par 92 [Fld Reg Ki] until the overshoot is higher than 4%.
Then, decrease the value of this parameter until it becomes slightly lower than
4%.
Important:Because of the relatively high field time constant, the rising
speed of the field current is limited. The rising time with
optimal tuning conditions could be up to 100 milliseconds.
7. Set Par 58 [TstGen Output] = 0 “NotConnected”.
8. Set Par 498 [Force Min Field] = 0 “Disabled”.
9. Set Par 468 [Min Fld Curr Pct] to the desired value.
10. Configure the analog outputs according to your application needs.