Rockwell-automation 21G PowerFlex 750-Series AC Drives Programming Man Manual de usuario Pagina 373

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Rockwell Automation Publication 750-PM001J-EN-P - October 2014 373
PowerFlex 753 Control Block Diagrams Appendix A
Figure 9 - Speed Control - Reference (5)
Bus/Current
Limiter
(Freq Ramp)
Velocity
Regulator
Final Speed Ref
Limit
Max Fwd/Rev
Speed Limit
Speed Fdbk
with Sensor
X
VF or SV
(0-2,7,8)
35
Motor Cntl Mode
1
2
3
4
5
6
BA
D
C
FE
HG
I
597
Torque Ref
Limit
Torque
Control
Output
Frequency
Motor Control Object
Limited
Speed Adder
Limit
(Max Fwd/Rev +
Overspeed Limit)
Speed Limit
Previous
Ramped Spd Ref
[8I2]
Ramp Rate
[8I1]
Ramp Input
[8E2]
X
Interrupt Time
Scaling
Ramp Rate
(Motor Ctrl
Interrupt)
(Hz / Sec)
Reverse
Prevention
Limited
Freq Adder
(Hz)
Selected
Freq Ref
(Hz)
(Max Fwd/Rev +
Overspeed Limit)
Freq Limit
Freq Limit High (Hz)
Freq Limit Low (Hz)
Limit
Motor
Freq
(Hz)
Motor Freq
To Ramp Integrator
[8G1]
Torque
Reference
Slip RPM at FLA
X
X
Speed to Freq
Scaling
620
Droop RPM at FLA
[NP Spd]
*Poles
120
Hz
RPM
1
[NP Freq]
1
Iq Feedback (pu)
X
621
[NP Spd]
*Poles
120
Hz
RPM
1
[NP Freq]
1
Filtered (100 R/S)
Iq Feedback (pu)
PI
Limit
[NP Spd]
*Poles
120
Hz
RPM
1
[NP Freq]
1
VF, SV Speed Regulator
Slip RPM at FLA
621
Ramped Spd Ref
594
1
Speed to Freq Scaling
Spd Ref After
Final Limit
[7I5] OR [8H4]
Flux Vector
(3)
Final Speed Ref
597
1
LPF
622
Freq Integral
(Hz)
Slip Comp BW
Active Vel Fdbk
131
663
664
VHzSV Spd Reg Kp
945
2
At Limit Status
(MaxSpeed Lmt)
945
3
At Limit Status
623
VHzSV
SpdTrimReg
Speed Control – Reference (5)
VHzSV Spd Reg Ki
X
1.5
[NP Freq]
[NP Spd]*Poles
120
Hz RPM
(OverSpd Lmt)
Speed Sensor Type
Open Loop
Speed Fdbk
1
0
From Fdbk
[3F2]
To Spd Reg
[10A3]
To Fdbk
[3B5]
[8G2]
[3D5],
[19E4],
[19H3]
***INTERNAL CONDITION ONLY***
Limit
OR
PF753 Rev_10.a
Page 9
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