Rockwell-automation 21G PowerFlex 750-Series AC Drives Programming Man Manual de usuario Pagina 402

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402 Rockwell Automation Publication 750-PM001J-EN-P - October 2014
Appendix A PowerFlex 755 Control Block Diagrams
Figure 36 - Speed/Position Feedback
1
2
3
4
5
6
B
A
D
C
FE HG
I
Speed/Posit Fdbk
125
128
Primary
Velocity Fdbk
Processing
Alternate
Velocity Fdbk
Processing
Motor Simulator
Virtual Encoder
Open Loop
Virtual Encoder
Aux Velocity
Fdbk
Processing
Primary
Velocity Fdbk
Processing
Alternate
Velocity Fdbk
Processing
709
Derivative
d
dt
Derivative
d
dt
0
1
Motor Accerlation
Fdbk
To Inertia
Adaption, Load
Observer/Estimator
[25G4], [26G4]
127
130
Pri Vel Feedback
Alt Vel Feedback
Pri Vel Fdbk Sel
Alt Vel Fdbk Sel
0
1
IA LdObs Delay
847
Psn Fdbk
Spd Options Cntl
(Auto Tach SW)
Fdbk Loss
Detect
936
5
635
7
Drive Status 2
(FdbkLoss SwO)
Display
Filtering
3
Mtr Vel Fdbk
131
Active Vel Fdbk
To Spd Reg
[9B4], [10A3], [24a B3], [24b B3]
To Posit Ref,
Posit Reg
[11C5], [12A4], [12A5]
135
Psn Fdbk Sel
132
Aux Vel Fdbk Sel
126
Pri Vel FdbkFltr
129
Alt Vel FdbkFltr
597
Final Speed Ref
76
Total Inertia
141
Virtual Enc EPR
690
Limited Trq Ref
1
Output Frequency
5
Torque Cur Fdbk
137
Open Loop Fdbk
621
Slip RPM at FLA
141
Virtual Enc EPR
138
Simulator Fdbk
134
Aux Vel Feedback
133
Aux Vel FdbkFltr
Pri Vel
Fdbk
Source
Alt Vel
Fdbk
Source
Psn Fdbk
Source
Aux Vel
Fdbk
Source
Parameter
Selection
Parameter
Selection
Parameter
Selection
Parameter
Selection
From Spd Ref
[9D3]
From Torq Ctrl Current
[24a E2], [24b E2]
[9I4]
To Spd Ref
[5A3]
[25H2], [26H2]
VF or SV &
Open Loop
Control Mode/
Feedback Mode
***INTERNAL CONDITION ONLY***
PF755 Rev_10.a
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