Rockwell Automation Allen-Bradley PowerFlex 755T Flux Vector Tuning User Manual

66 Rockwell Automation Publication 750-AT006D-EN-P - January 2022
Chapter 4 Auto Tuning
where:
B
W
= 10:445 [VCL CReg BW] for IPM motors
B
W
= 0 for SPM, because Ld and Lq are used to generate frequency with no direct current control
Damping = 10:450 [VCL CReg Damping]
Rs = 10:619 [c PM Stator Res] or 10:620 [u PM Stator Res]
Ld100 = 10:628 [c PM Ld at 100] or 10:629 [u PM Ld at 100]
Lq75 = 10:640 [c PM Lq at 75] or 10:641 [u PM Lq at 75]
Open loop current regulator gains for IM motors are calculated as functions of bandwidth and damping:
VCL CReg IqKi = 0
VCL CReg IqKp = 0
VCL CReg IdKi = 0
VCL CReg IdKp = weak control according to Figure 62
Figure 62 - Open Loop IqKp Gain Calculation
Figure 63
shows the calculation sequence.
Figure 63 - Current Regulator Gain Calculations
VCL CReg IdKp
Motor speed
[Mtor NP RPM]
0.5 * [Mtor NP RPM]
5/8 * 2S* BW * Lo
MtrParam C/U Sel
Calculated
Calculated
User
Entered
510510
Automatic
Calculations
Gain
Calc
[Autotune] =
“Static MtrID” (IM only)
Or “Rotate MtrID”
c PM Lq at 100
c PM Lq at 125
c PM Lq at 150
c PM Lq at 75
c PM Lq at 175
c PM Lq at 200
c PM Stator Res
c PM Ld at 0
c PM Ld at 100
c PM Lq at 25
c PM Lq at 50
u PM Lq at 100
u PM Lq at 125
u PM Lq at 150
u PM Lq at 75
u PM Lq at 175
u PM Lq at 200
u PM Stator Res
u PM Ld at 0
u PM Ld at 100
u PM Lq at 25
u PM Lq at 50
Motor NP Amps
400
Motor NP Volts
401
Motor NP Hertz
402
Motor NP RPM
403
405
406
407
910
Motor NP Pwr Units
Motor NP Power
Motor Poles
Autotune
Motor NP Amps
400
Motor NP Volts
401
Motor NP Hertz
402
Motor NP RPM
403
405
406
407
910
Motor NP Pwr Units
Motor NP Power
Motor Poles
Autotune
000
= Read Only
000
= User Entered
000
= Read Only
000
= User Entered
620
627
629
637
639
643
645
647
649
651
641
512
515
u IM Stator Res
u IM LeakageL
Applies to IM Motors
Applies to PM Motors
620
627
629
637
639
643
645
647
649
651
641
512
515
u IM Stator Res
u IM LeakageL
Applies to IM Motors
Applies to PM Motors
642
644
646
648
650
640
619
626
628
636
638
511
514
c IM Stator Res
c IM LeakageL
Applies to IM Motors
Applies to PM Motors
642
644
646
648
650
640
619
626
628
636
638
511
514
c IM Stator Res
c IM LeakageL
Applies to IM Motors
Applies to PM Motors
445
450
VCL CReg BW
VCL CReg Damping
User Entered
VCL CReg IdKp
VCL CReg IqKp
VCL CReg IdKi
VCL CReg IqKi

Rockwell Automation Allen-Bradley PowerFlex 755T Flux Vector Tuning Specifications

General

Brand	Rockwell Automation
Model	Allen-Bradley PowerFlex 755T Flux Vector Tuning
Category	Industrial Equipment
Language	English