PowerFlex 700 AC Drives

1-24 Installation/Wiring
Reference Control
“Auto” Speed Sources
The drive speed command can be obtained from a number of different
sources. The source is determined by drive programming and the
condition of the Speed Select digital inputs, Auto/Manual digital inputs
or reference select bits of a command word.
The default source for a command reference (all speed select inputs open
or not programmed) is the selection programmed in [Speed Ref A Sel].
If any of the speed select inputs are closed, the drive will use other
parameters as the speed command source.
“Manual” Speed Sources
The manual source for speed command to the drive is either the HIM
requesting manual control (see ALT Functions on page B-2) or the
control terminal block (analog input) if a digital input is programmed to
“Auto/Manual.”
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.
Figure 1.10 Speed Reference Selection Chart (1)
= Default
[Digital Inx Select]: PI Exclusive Mode
Trim Speed Sel 3 2 1 [PI Configuration]:
Auto Speed Ref Options
Bit 0, Excl Mode = 0
Speed Ref A Sel, Parameter 090 0 0 0
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
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Auto
DPI Port Ref 1-6, See Parameter 209
Manual Speed Ref Options
HIM Requesting Auto/Manual
TB Man Ref Sel, Parameter 096
Jog Speed, Parameter 100
Speed Adders
PI Output
Slip Compensation
None
DPI Command
Digital Input
Jog Command
[Speed Mode]:
2 "Process Pi"
1 "Slip Comp"
0 "Open Loop"
Man
Drive Ref Rslt
Mod Functions
(Skip, Clamp,
Direction, etc.)
Min/Max Speed
Commanded
Frequency
Acc/Dec Ramp
and
S Curve
Output Frequency
Pure Reference
to follower drive for
Frequency Reference
Post Ramp
to follower drive for
Frequency Reference
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.
(1) To access Preset Speed 1, set parameter 090 or 093 to “Preset Speed 1.”
Publication 20B-UM002C-EN-P