Rockwell Automation 20D PowerFlex 700S Drive Ph I Control, Frames 1...11 User Manual
Page 125
Programming and Parameters
3-71
742
Posit Ref Sel
Enter a value to select the position mode and corresponding reference.
Default:
Options:
1
0
1
“AuxPosit Ref”
“Interpolate”
2
“Pt to Pt”
“AuxPosit Ref”
743
Aux Posit Ref
Supplies position reference to the position regulator when selected by Par 742 [Posit Ref
Sel]. This input is designed to be linked to a position count accumulator such as a virtual
encoder or hardware accumulator.
Default:
Min/Max:
0
-/+2147483648
✓ ✓ 32-bit
Integer
744
PositRef EGR Out
Accumulated output of the position reference Electronic Gear Ratio (EGR). When the
position regulator is not enabled, this parameter is initialized to Par 762 [Mtr Posit Fdbk] or
to the selected position reference as determined by Par 740 [Position Control] bit 6
[ActPosit Rst].
Default:
Min/Max:
0
-/+2147483648
32-bit
Integer
745
PositRef EGR Mul
An integer value in the numerator of the EGR function that is precision multiplied by the
selected position reference. A negative value will effect a change in polarity.
Default:
Min/Max:
1
-/+2000000
✓ ✓ 32-bit
Integer
746
PositRef EGR Div
An integer value in the denominator of the EGR function that divides the product of the
numerator of the EGR function and the selected position reference. Remainders are
accumulated and not lost.
Default:
Min/Max:
1
1/2000000
32-bit
Integer
747
Position Cmmd
Final accumulated command to the position regulator. When the position regulator is not
enabled, this parameter is initialized to Par 762 [Mtr Posit Fdbk] or to the selected position
reference as determined by Par 740 [Position Control] bit 6 [ActPosit Rst]. Thereafter, its
value will reflect the result of reference and offset changes.
Default:
Min/Max:
0
-/+2147483648
32-bit
Integer
748
CoarsePosit Trgt
Input to the interpolator. This is a course position target reference.
Default:
Min/Max:
0
-/+2147483648
✓
DWord
749
Interp Position
Input to the interpolator. This is a course position target reference.
Default:
Min/Max:
0
-/+2147483648
DWord
750
Course Spd Trgt
Input to the interpolator. This is a course speed target reference.
Default:
Min/Max:
0
-/+2200000000.0000
✓ Real
751
Interp Speed
Output from the interpolator. This is a fine speed target reference. Interpolated value of
Par 750 [Course Spd Trgt] if available, or the first derivative of Par 748 [CoursePosit Trgt]
if not available.
Default:
Min/Max:
0
-/+8.0000
Real
752
Interp AccelRate
Output from interpolator. This is a fine acceleration rate. First derivative of Par 750
[Course Spd Trgt] if available, or zero (0) if not available.
Default:
Min/Max:
0
-/+8.0000
Real
753
Posit Offset 1
Supplies a position reference offset, which is summed after the EGR and used to phase
trim position reference. A step in the offset position will be internally rate limited and
added to the selected reference position. The rate of correction is set by Par 755 [Posit
Offset Spd]. The initial value of this parameter is latched upon position enable without
causing a change in reference. Subsequent changes to the value will be relative to the
latched value. See Par 740 [Position Control] bit 5 [XOffset ReRef] for re-referencing the
offsets.
Default:
Min/Max:
0
-/+2147483648
✓ ✓ 32-bit
Integer
754
Posit Offset 2
Supplies another position reference offset, which is summed directly with Par 753 [Posit
Offset 1]. Used to trim the phase of the selected position reference. Position offset will be
internally rate limited to a velocity set by Par 755 [Posit Offset Spd].
Default:
Min/Max:
0
-/+2147483648
✓ ✓ 32-bit
Integer
755
Posit Offset Spd
Sets the speed of position offset. A position offset command will not exceed this speed.
The actual speed of offset is limited to a maximum value of 1/(inertia * pos gain) so as not
to cause a torque pulse greater than 1 per unit. The speed will change exponentially.
Units:
Default:
Min/Max:
Comm Scale:
RPM
176.4000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0
✓ ✓ Real
756
X Offst SpdFilt
Displays the output of a first order filter whose time response is shaped specifically to
provide an output that represents the actual speed of offset correction. It may be used as
feed forward into speed reference to secure minimal position error during changes to
offset.
Units:
Default:
Min/Max:
Comm Scale:
RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0
Real
No.
Name
Description
Values
Li
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Read
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Da
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