Rockwell-automation 21G PowerFlex 750-Series AC Drives Programming Man Manual de usuario Pagina 424

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424 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Appendix A PowerFlex 755 Control Block Diagrams
Figure 58 - Torque Control - Current (IM & SPM)
1
2
3
4
5
6
BA
D
C
FE HG
I
Torque Control – Current
Induction Motor (IM) & Surface Permanent Magnet Motor (SPM)
PF755 Rev_10.a
Page 24a
Power
Unit
Thermal
Protection
Calc
Is,Id
Iq
Pos Torque Limit
{Trq Neg Lmt}
Neg Torque Limit
{Trq Pos Lmt}
Regen Power Lmt
{Regen PwrLmt}
Bus
Regulator
Calc
Pwr
Te
Active Vel Fdbk
Active Pos
Torque Limit
Active Neg
Torque Limit
Limit
Max
Min
Filtered Trq
Ref
Limited Trq
Ref
Motor Ctrl Mode
Flux Current
Fdbk
Calc
Iq,Id
Is
Active Cur Lmt
Limit
Calc
Te
Iq
Rate Lim
Motor Power Lmt
{Mtrng PwrLmt}
Torque Current Ref
Current Rate Lmt
Min
Pk Torque Iq Current Limit
Voltage Ref/
Limit
Generation
Current Lmt 1
Current Lmt Sel
Current Lmt 2
Active Iq Current Limit
Thermal Mgr Current Limit
424
421
422
423
425
690689
+
+
35
131
426
427
671
670
Neg
Limit
Pos
Limit
VF or SV
(0-2,4,5,7,8)
Flux Vector
(3,6)
945
21
At Limit Status
22
Trq Pos Lmt
Trq Neg Lmt
945
17
At Limit Status
18
TrqCurPosLmt
TrqCurNegLmt
Flux Vector
Parameter
Selection
From Fdbk
[3F2]
[36D2]
From Torq
Ctrl
[23H2]
[3C6], [25E2],
[26E2]
1
Flux
1
Flux
-1
Flux
-1
Flux
23
24
Mtrng PwrLmt
Regen PwrLmt
25
26
Cur Lmt FV
Therm RegLmt
27
28
BusVltgFVLmt
Mtr Vltg Lkg
Flux
{BusVltgFVLmt}
{Mtr Vltg Lkg}
{Cur Lmt FV}
{Therm RegLmt}
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