Rockwell-automation 1760-xxxx Pico GFX-70 Controllers User Manual Manual do Utilizador descarregar pdf (Página 212)

Publication 1760-UM002B-EN-P - March 2005

4-102 Wiring with Pico GFX-70

Figure 4.42 Pico GFX-70 circuit diagram with smoothing function block

Parameter Display and Parameter Set for the FT Function Block

Inputs

The function block inputs >I1, >I2 and >KP can have the following operands:

• Constants

• Markers MD, MW, MB

• Analog inputs IA01 to IA04

– IA01: terminal I7

– IA02: terminal I8

– IA03: terminal I11

– IA04: terminal I12

• Analog output QA01

• Actual value

… QV> of another function block

Output

The function block output QV> can be assigned the following operands:

• Markers MD, MW, MB

• Analog output QA01

M 48----------------------------[ FT17EN

FT17 +

>I1

>TG

>KP

QV>

FT17 FT PT1 signal smoothing filter function block, number 17

+ Appears in the parameter display

>I1 Input value

>TG Recovery time

>KP Proportional gain

QV> Output value, smoothed

IMPORTANT

The recovery time T

g

is the time in which the output value

is calculated.

The recovery time T

g

must be set so that it is an integer

multiple of the cycle time or controller scan time T

c

.

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