Rockwell-automation 1336F PLUS II Custom Firmware Instructions - EN921 Manuel d'utilisateur télécharger pdf (Page 5)

EN921 - Variable Voltage w/ PI Power/Current Control 5

Voltage PI

[PI Status]

This parameter displays the status of the Process PI

regulator.

Parameter Number 214

Parameter Type Read Only

Factory Default None

[PI Ref Select]

The source of the PI reference is selected with this param-

eter. The value from the selected reference is the “set

point” for the Process PI regulator.

Parameter Number 215

Parameter Type Read/Write

Factory Default “Volt Preset”

Units

Display Drive

“Analog In 0” 0

“Analog In 1” 1

“Analog In 2” 2

“Volt Preset” 3 Refer to [Volt Preset] Value

“Adapter 1-6” 4-9

“Volt Cmd Ref” 10 Refer to [Volt Command Ref] Value

“%Power Ref” 11

“%Current Ref” 12

[PI Fdbk Select]

The source of the PI feedback is selected with this param-

eter. It identifies the input point for the process feedback

device.

Parameter Number 216

Parameter Type Read/Write

Factory Default “Analog In 1”

Units

Display Drive

“Analog In 0” 0

“Analog In 1” 1

“Analog In 2” 2

“Volt Preset” 3 Refer to [Volt Preset] Value

“Adapter 1-6” 4-9

“Volt Cmd Ref” 10 Refer to [Volt Command Ref] Value

“%Power Ref” 11

“%Current Ref” 12

[PI Reference]

This parameter displays the current value of the reference

selected by [PI Ref Select].

Parameter Number 217

Parameter Type Read Only

Display Units / Drive Units None / 4096 = 100%

Factory Default None

Minimum Value –4915

Maximum Value 4915

Diagram 1

Time

Enable

Output

Command

Output

Volts

Disable

02421 27 30181512963

Enable PI output integrates from zero – drive ramps

to regulated voltage.

Disable PI output is forced to zero – drive ramps to

unregulated voltage.

Enable PI output steps to preload and integrates

from there – drive steps to preload and

ramps from there.

Disable PI output is forced to zero - drive ramps to

unregulated voltage.

Enable PI output integrates from preload – drive

ramps from preload.

Disable PI output is held at preload - drive ramps to

unregulated voltage (min. preload).

Note: Drive will step output equal to preload on start.

Diagram 2

Enable Disable

02421 27 301815

Preload

12963

Diagram 3

Enable Disable

02421 27 30181512963

Preload

Preload at Start

Preload

Feed forward effect for

more dynamic response

Better response for

well defined systems

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Enabled

Spares

1 2 3 4 5 6 7 8

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Rockwell-automation 1336F PLUS II Custom Firmware Instructions - EN921 Manuel d'utilisateur Page 5

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