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Changing speed sources, Torque reference source, Auto/manual examples – Rockwell Automation 20B PowerFlex 700 Installation Instructions - Frames 0…6 User Manual

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60

Rockwell Automation Publication 20B-IN019E-EN-P - July 2013

PowerFlex 700 Adjustable Frequency AC Drive – Frames 0…6

Changing Speed Sources

The selection of the active Speed Reference can be made through digital inputs,
DPI command, jog button or Auto/Manual HIM operation.

Torque Reference Source

The torque reference is normally supplied by an analog input or network
reference. Switching between available sources while the drive is running is not
available. Digital inputs programmed as “Speed Sel 1,2,3” and the HIM Auto/
Manual function (see above) do not affect the active torque reference when the
drive is in Vector Control Mode.

Speed Reference Selection Chart

(1)

Auto/Manual Examples

PLC = Auto, HIM = Manual
A process is run by a PLC when in Auto mode and requires manual control from
the HIM during set-up. The Auto speed reference is issued by the PLC through a
communications module installed in the drive. Since the internal
communications is designated as Port 5, [Speed Ref A Sel] is set to “DPI Port 5”
with the drive running from the Auto source.

Attain Manual Control

Press ALT then Auto/Man on the HIM. When the HIM attains
manual control, the drive speed command comes from the HIM speed
control keys.

Release to Auto Control

Press ALT then Auto/Man on the HIM again. When the HIM releases
manual control, the drive speed command returns to the PLC.

(1) To access Preset Speed 1, set parameter 090 or 093 to “Preset Speed 1.”

= Default

Speed Ref B Sel, Parameter 093

Preset Speed 2, Parameter 102

Preset Speed 3, Parameter 103

Preset Speed 4, Parameter 104

Preset Speed 5, Parameter 105

Preset Speed 6, Parameter 106

Preset Speed 7, Parameter 107

TB Man Ref Sel, Parameter 096

Digital Input

DPI Port Ref 1-6, See Parameter 209

DPI Command

Jog Speed, Parameter 100

Jog Command

HIM Requesting Auto/Manual

Trim

[Digital Inx Select]:
Speed Sel

3 2 1

0 0 1

0 1 1

0 1 0

1 0 0
1 0 1

1 1 0

1 1 1

Auto

Man

Drive Ref Rslt

Commanded

Frequency

Min/Max Speed

Acc/Dec Ramp

and

S Curve

Pure Reference

Post Ramp

to follower drive for
Frequency Reference

to follower drive for
Frequency Reference

Auto Speed Ref Options

Manual Speed Ref Options

Slip Compensation

1 "Slip Comp"

None

0 "Open Loop"

PI Output

2 "Process Pi"

Speed Adders

[Speed Mode]:

PI Exclusive Mode
[PI Configuration]:
Bit 0, Excl Mode = 0

Output Frequency

Mod Functions

(Skip, Clamp,

Direction, etc.)

Speed Ref A Sel, Parameter 090

0 0 0