Speed / position feedback, Speed/posit fdbk – Rockwell Automation 20G PowerFlex 750-Series AC Drives User Manual

Page 379

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Rockwell Automation Publication 750-RM002B-EN-P - September 2013

379

Integrated Motion on the EtherNet/IP Network Applications for PowerFlex 755 AC Drives

Chapter 6

Speed / Position Feedback

1

2

3

4

5

6

B

A

D

C

F

E

H

G

I

Speed/Posit Fdbk

125

128

Primary

Velocity Fdbk

Processin

g

Alternate

Velocity Fdbk

Processin

g

M

otor Sim

ulator

V

irtual E

ncoder

Open

Loop

Virtual Encoder

Au

x Veloc

ity

Fdbk

Proc

ess

ing

Primary

Velocity Fdbk

Processin

g

Alternate

Velocity Fdbk

Processin

g

709

De

rivat

ive

d

dt

De

rivat

ive

d

dt

0

1

Motor Accerlation

Fdbk

To Inerti

a

Adaption, Load

O

b

se

rver/Estima

to

r

[25

G4], [26G

4]

12

7

130

Pri Vel Feedback

Alt Vel

Feedback

Pri Vel Fdbk Sel

Alt Vel

Fdbk Sel

0

1

IA LdO

bs Delay

847

Psn Fdbk

Spd Options Cntl

(Auto Tach SW

)

Fdbk L

oss

De

te

c

t

936

5

63

5

7

Driv

e St

at

us

2

(FdbkLoss SwO)

Display

Filtering

3

Mt

r Vel Fdbk

13

1

Active Vel Fdbk

To Spd Reg

[9

B4

], [1

0A3], [24a

B3], [24

b

B3

]

To Posit

Ref,

Posit Reg

[11C5]

, [12A

4]

, [

1

2A5]

13

5

Psn Fdbk Sel

132

Aux Vel Fdbk Sel

126

Pri Vel F

d

bkFltr

129

Alt

Ve

l Fdb

k

Flt

r

59

7

Final Speed

Ref

76

Total Inertia

141

Virtua

l Enc EPR

69

0

Limite

d Tr

q Ref

1

Output Frequency

5

Torque Cur Fdbk

13

7

Op

en Lo

op Fdb

k

621

Slip RPM at

FLA

141

Vi

rtual E

n

c EP

R

138

Simula

to

r Fd

bk

13

4

Au

x Vel Feedb

ack

133

Aux Vel FdbkFltr

Pri Vel

Fdbk

Source

Alt

Ve

l

Fdbk

Source

Psn Fdbk

Source

Aux Vel

Fdbk

Sour

ce

Param

eter

Select

ion

Param

eter

Select

ion

P

arame

ter

Selectio

n

P

arame

ter

Selectio

n

From Spd Ref

[9D3]

From Torq

Ctrl

Current

[24a E2], [24b

E2]

[9

I4

]

To Spd Ref

[5A3]

[25H2], [26H2]

VF or

SV &

O

pen Loop

Control Mode/

Fe

ed

back Mode

***INTERNAL CONDIT

ION ONLY***

PF

755 Rev

_9.a

Pa

ge 3

2

403

F

e

edb

ack

n

Vel

o

city Filter Taps

467 –

V

elocity Integrator

Contro

l

454 –

V

elo

c

ity Feedback

45

3 –

V

e

locity Refe

ren

c

e

49

6 -

K

j

135

2

In

d

uctio

n

Mo

to

r

Rated Slip

Speed

6

00 –

O

utpu

t

Frequency

52

9 –

Iq Current

Feedback

494 –

Torque Reference -

L

imited

434 –

P

osition Feedback

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