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Process pi control – Rockwell Automation 20A PowerFlex 70EC/700VC User Manual

Page 147

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PowerFlex 70EC Block Diagrams

143

Bit 5 - Feedbak Sqrt

124 - PI Configuration

0.00 %

136 - PI Fdback Meter

Bit 3 - Ramp Ref

124 - PI Configuration

50.00 %

135 - PI Ref Meter

10.0 Secs

140 - Accel Time 1

10.0 Secs

142 - Decel Time 1

10.0 Secs

143 - Decel Time 2

10.0 Secs

141 - Accel Time 2

Bit 8 - Accel 1

271 - Drive Logic Rslt

Bit 9 - Accel 2

271 - Drive Logic Rslt

Bit 10 - Decel 1

271 - Drive Logic Rslt

Bit 11 - Decel 2

271 - Drive Logic Rslt

0.0 R/s

139 - PI BW Filter

50.00 %

137 - PI Error Meter

0.00 Secs

459 - PI Deriv Time

0.0 Hz

23 - Speed Reference

0.0 %

133 - PI Preload

Bit 2 - Preload Mode

124 - PI Configuration

0.0 %

133 - PI Preload

Bit 0 - Excl Mode

124 - PI Configuration

1.00

130 - PI Prop Gain

0.0 %

138 - PI Output Meter

Bit 3 - PI InLimit

134 - PI Status

-100.0 %

131 - PI Lower Limit

100.0 %

132 - PI Upper Limit

2.00 Secs

129 - PI Integral Time

Bit 1 - PI Hold

134 - PI Status

Bit 2 - PI Reset

134 - PI Status

Bit 0 - PI Enabled

134 - PI Status

Limit

Limit

Z

-1

–1

>0

>0

F

rom Process

PI F

eedbac

k Select

F

rom Process PI

Digital Inputs

Ramp

X

÷

X

÷

+

+

+

+

+

+

R

S

R

S

ω

s +

ω

LP

ass

K

d

*S

D Gain

Kp

P Gain

10

SqRt

100

1

0

1

0

0

1

0

1

Note:

If an

y of the Dr

iv

e Logic Rslt par

ameters change from a 1 to a 0,

latching will occur

, holding last state

.

0.0 Hz

1 - Output Freq

60.0 Hz

43 - Motor NP Hertz

0.00 Amps

4 - Torque Current

40.0 RPM

121 - Slip RPM @ FLA

40.0

122 - Slip Comp Gain

0.0 RPM

123 - Slip RPM Meter

4

49 - Motor Poles

Sensrls Vect

53 - Motor Cntl Sel

Quadrature

412 - Motor Fdbk Type

1024

413 - Encoder PPR

0

414 - Enc Pos Feedback

0.0

415 - Encoder Speed

Open Loop

80 - Feedback Select

0.0

25 - Speed Feedback

X

[1]

÷

X

÷

X

X

X

X

X

X

+

+

+

To Speed Control

V/Hz

1

45

1

120

ω

s +

ω

LP

ass

Processing

Min

Abs

4

3

2

1

0

Sensr

ls V

ect

Open Loop

Slip Comp

Encoder

ENC-6

Encoder Board (Option)

ENC-5

ENC-4

ENC-3

ENC-2

ENC-1

SV Economiz

e

Custom V/Hz

Fan/Pump V/Hz

FVC V

ector

Encoder

NP T

orque

Current

3

1

0

Process PI

Control

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