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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
