Programming chapter 3 – Rockwell Automation 1771-PD PID MODULE (+DU) User Manual

Page 91

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background image

Programming

Chapter 3

3Ć48

Figure 3.13

Control Word Summary

1

0

17

16

15

14

13

12

11

10

07

06

05

04

03

02

01

00

1

0

1

0

1

0

1

0

Expanded Loop

Expanded Loop

1

0

1

0

Master Control Word W01

Loop 1 Control Word A W18

Loop 1 Control Word B W19

Expanded Loop 1 Control Word W30

Loop 2 Control Word A W38

Loop 2 Control Word B W39

Expanded Loop 2 Control Word W50

11116

Note: If you change a loop 1 or loop 2 parameter, you must initiate a load/enter sequence.

1

0

1

1

LOOP 1

2 LOOPS

EXPANDED

STANDARD

CALIB

BINARY

BCD

BINARY

BCD

SP

SOFT

FAULT

RESET

DIAG

LOOP

TIME

LOAD

0

0

VERIFY

CODE

ENTER

SET

OUTPUT 2

SET

OUTPUT 1

MANUAL

REQUEST

0

1

PC

LIMIT

PV

VD MAX

LIMIT

HOLD

PID1

HOLD

BIAS1

1

0

PV1

PID

PC

PV2

PID

PV1

PV2

PV-SP

ERROR1

SP-PV

PV-SP

ERROR2

SP-PV

ERROR1

LIMIT

ERROR2

DEAD BAND

DEAD BAND

V1 MAX

LIMIT

V1 MAX

LIMIT

PROPORTIONAL

ERROR

FUNCTION

PROPORTIONAL

ERROR

FUNCTION

INTEGRAL

ERROR

FUNCTION

INTEGRAL

ERROR

FUNCTION

DERIV. ERR.

Error

PV

DERIV. ERR.

Error

VD MAX

LIMIT

HOLD

PID2

HOLD

BIAS2

1

0

1

0

MULT (X)

BIAS 1

SUM (+)

MULT (X)

BIAS 2

SUM (+)

LIMIT

OUTPUT1

LIMIT

OUTPUT2

SOFT FAULT

SELECTION CODE

SOFT FAULT

SELECTION CODE

x10

TA1

x1

x10

TA2

x1

x10

TB1

x1

x10

TB2

x1

x10

TC1

x1

x10

TC2

x1

(-)

SP SIGN

(+)

(-)

SP SIGN

(+)

x10

SCALING

x1

x10

SCALING

x1

MULTIPLIER

FOR

K p

MULTIPLIER

FOR

K 1

i

MULTIPLIER

FOR

K D

MULTIPLIER

FOR

K p

MULTIPLIER

FOR

K 1

i

MULTIPLIER

FOR

K D

1

1

1

1

1

0

1

0

1

0

FFI1

FFI2

SCALE

PV1

SCALE

PV2

SCALE

SP1

SCALE

SP2

SCALE

ERROR1

SCALE

ERROR2

DECOUPLE

0

TIEBACK

FFI1

PC

TIEBACK

FFI2

PC

NEG.

FFI1

POS.

NEG.

FFI2

POS.

[FFI+FF0]

[FFI+FF0]

MULTIPLIER

FOR

MULTIPLIER

FOR

LEAD/LAG

LEAD/LAG

(-)

SMIN1

(+)

(-)

SMIN2

(+)

(-)

(+)

(-)

SMAX2

(+)

SMAX1

PC

PID

BIAS1

PC

PID

BIAS2

NEG.

POS.

BIAS1

NEG.

POS.

BIAS2

CASCADE

LP1 TO
SP LP2

0

K

F

I X

K

F

2 X

K

F

I

K

F

I

1

0

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