Torque control – c urrent – Rockwell Automation 20G PowerFlex 750-Series AC Drives User Manual

Page 401

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

401

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

Chapter 6

Torque Control - Current, Induction Motor and Surface Permanent Magnet Motor

1

2

3

4

5

6

B

A

D

C

F

E

H

G

I

Torque Control –

C

urrent

Induction Motor (IM) & Surface

Permanent Magnet Motor (SPM)

PF

755 Rev

_9.a

Page

24a

Power

Unit

Thermal

Protection

Calc

Is

,I

d

Iq

Pos Torque

Limi

t

{Trq

Neg Lm

t}

Neg Torque Limit

{Trq

Pos Lm

t}

Reg

e

n

Power

Lmt

{Re

gen Pwr

Lmt}

Bu

s

Regulator

Ca

lc

Pw

r

Te

Active Vel

Fdbk

Activ

e Pos

Torqu

e Limit

Active

Neg

T

orque L

imit

Lim

it

Ma

x

Min

Filter

ed Trq

Re

f

Limited Trq

Ref

Motor Ctrl Mode

Flux C

u

rrent

Fdbk

C

alc

Iq,Id

Is

Act

ive Cur Lm

t

Li

mit

Calc

Te

Iq

Rate

Lim

Mot

o

r Power

Lm

t

{Mtrng

PwrLm

t}

Torque Current Ref

Current Rate Lmt

Min

Pk To

rque Iq

Curren

t Limit

Voltag

e Ref/

Limit

Gene

ration

Curr

ent Lmt 1

Current Lmt Sel

Cur

rent Lmt

2

Ac

tive Iq

Current

Limit

T

herma

l Mgr C

urrent

Limit

42

4

42

1

422

423

425

690

68

9

+

+

35

13

1

42

6

427

671

670

Neg

L

imit

Pos

Limit

VF

o

r S

V

(0-2,4,

5,7,8)

Flux V

ector

(3,6

)

94

5

21

At Limit Status

22

Trq

Pos Lm

t

T

rq Neg

Lmt

945

17

At

Limit

St

at

us

18

TrqC

urPosLm

t

TrqCu

rNegLm

t

Flux Vector

Par

ameter

Se

lection

From Fdbk

[3

F2

]

[3

6D

2]

From Torq

Ctrl

[23H2]

[3C6

], [2

5E2],

[26E2]

1

Fl

ux

1

Fl

ux

-1

Flux

-1

Flux

23

24

Mtrng P

wrLm

t

R

egen Pw

rLmt

25

26

Cur Lmt

FV

Therm

RegL

mt

27

28

Bus

VltgFVL

mt

Mtr

Vltg Lk

g

Fl

u

x

{BusVltg

FVLmt

}

{Mt

r Vltg L

kg}

{Cur

Lmt F

V}

{T

herm R

egLmt

}

493 –

T

orque Reference -

F

iltered

505 –

T

orque Limit -

Negative

504 –

T

orque Limit -

P

ositive

454 –

V

elocity

Feedback

625 –

R

egen Power Limit

800

494 –

T

orque Reference -

Limited

530 –

Id Current Feedback

1315 –

Motor Type

1320 –

M

otor Rated Peak Current

533 –

C

urrent Vector Limit

520 –

Iq Current Command

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