Dimplex DC12 Manual de Serviço descarregar pdf (Página 35)

PowerFlex 700L Technical Data

Publication 20L-TD001A 35

PowerFlex 700S Phase II Control

Digital Current Regulator outperforms

older style analog regulators in speed,

repeatability and drift.

Negative Feed Forward reduces or

eliminates overshoot during step speed

changes. Helpful in preventing backup

during stopping.

Coarse-to-Fine interpolation for

DriveLogix Motion, direct positioning for

precise control and point-to-point for

indexing are all features of the Integral

Position Loop. The loop easily handles

applications such as simple indexing and

electronic line shaft.

Advanced Edge-to-Edge Algorithms and

pulse position averaging provides

extremely accurate speed measurement

and excellent performance at very low

speed.

Servo Lock compensates for lost position

during step loads to the velocity regulator.

Offers optimum performance for draw

applications and others.

Derivative

Gain Block

Current

Magnitude

Calculator

PI Gain

Block

Current Limit

U Phase Motor Current

W Phase Motor Current

Current Limit Level

Proportional Channel

Integral

Channel

V Phase Motor Current

Kp

Ki

Negative

Feed Forward

Speed Ref

Speed

Feedback

nff = 0

V

t

V

t

nff = 0.3

Interpolator

Accum

Σ

Accum

Σ

Deriv

Δ

Position offsets

Position Error

K

kp

Position Speed

Speed FDBK

Position FDBK

Position Command

Position Target

Accum

Σ

Deriv

Δ

P Gain

ki

s

I Gain

Edge to Edge Time

ΔX

pulse

Δt

edge.edge

V

t

without Servo Lock

V

t

A1 = A2

Velocity Response to Step Load

with Servo Lock

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 47 48

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