Rockwell Automation 20D PowerFlex 700S Drive Ph I Control, Frames 1...11 User Manual

Page 72

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3-18

Programming and Parameters

40

Selected Spd Ref

Displays the speed command before the speed reference limit block.

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

41

Limited Spd Ref

Displays the speed command after the limit block, limited by Par 30 [Rev Speed Limit] and
Par 31 [Fwd Speed Limit].

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

42

Ramped Spd Ref

Displays the speed command after the linear ramp block, modified by Par 32 [Accel Time]
and Par 33 [Decel Time].

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

43

S Curve Spd Ref

Displays the speed command after the s-curve block, modified by Par 34 [S Curve Time].

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

44

Filtered Spd Ref

Displays the speed reference value output from the reference Lead/Lag filter.

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

45

Delayed Spd Ref

One sample period delayed output of Par 43 [S Curve Spd Ref]. Used in some applications
to synchronize the speed reference value through SynchLink. This master drive [S Curve
Spd Ref] would then be transmitted to the slave drives over SynchLink.

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4[Motor NP RPM] = 1.0

Real

46

Scaled Spd Ref

Displays the speed command after scaling (the product of Par 44 [Filtered Spd Ref] and Par
38 [Speed Ref Scale].

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

47

Spd Trim1 SpdRef

Displays the final speed command used by the Speed Regulator. It is the sum of the Par 46
[Scaled Spd Ref] and Par 21 [Speed Trim1].

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

Real

50

Spd Ref TP Sel

Enter or write a value to select speed reference data displayed in Par 52 [Spd Ref TP Data]
and Par 51 [Spd Ref TP RPM].

Default:
Options:

0
0
1
2
3
4
5
6
7
8
9
10
11

“Zero”
“Zero”

12 “S Crv Match”

“User Ref”

13 “S Array Size”

“Logic Select”

14 “S Array Indx”

“Lgc Sel Ref”

15 “Reserved”

“Reserved”

16 “Scl Ext Trim”

“Logic En Ref”

17 “Trim FiltOut”

“Rev Spd Lim”

18 “Ref w/Trim”

“Fwd Spd Lim”

19 “Amp Lim2 In”

“Rev Lim Stat”

20 “Amp LimStat2”

“Fwd Lim Stat”

21 “Amp Lim2 Out

“Amp Lim Stat”

22 “FTD Ramp Out“

“Ramp Match”

51

Spd Ref TP RPM

Displays the value selected by Par 50 [Spd Ref TP Sel] in RPM. This display should only be
used if the selected value is floating point data.

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4[Motor NP RPM] = 1.0

Real

52

Spd Ref TP Data

Displays the value selected by Par 50 [Spd Ref TP Sel]. A value of 1.0 represents base speed
of the motor.

Default:
Min/Max:

0
-/+32768

16-bit
Integer

53

Drive Ramp Rslt

Displays the speed reference value, after the limit function. This is the input to the error
calculator and speed regulator. Available for use in peer-to-peer data links (DPI interface).
This number is scaled so that rated motor speed will read 32768.

Default:
Min/Max:

0
-/+262144/262144

16-bit
Integer

55

Speed Comp

Displays the derivative or change in Par 56 [Inertia SpeedRef] on a per second basis. Link
this parameter to Par 23 [Speed Trim 3] and set Par 24 [SpeedTrim 3 Scale] to 0.002 to
reduce position error in following applications.

Default:
Min/Max:

0.0000
-/+2200000000.0000

16-bit
Integer

56

Inertia SpeedRef

The speed input of the inertia compensator. Link this parameter to the output of an internal
ramp or s-curve block. The inertia compensator generates a torque reference that is
proportional to the rate of change of speed input and total inertia.

Units:
Default:
Min/Max:
Comm Scale:

RPM
0.0000
-/+14112.0000
Par 4 [Motor NP RPM] = 1.0

✓ ✓ Real

57

InertiaAccelGain

Sets the acceleration gain for the Inertia Compensation function. A value of 1 produces 100%
compensation.

Default:
Min/Max:

1.0000
1.0000/2.0000

✓ ✓ Real

58

InertiaDecelGain

Sets the deceleration gain for the Inertia Compensation function. A value of 1 produces 100%
compensation.

Default:
Min/Max:

1.0000
1.0000/2.0000

✓ ✓ Real

No.

Name
Description

Values

Li

nkab

le

Read

-Wr

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Da

ta

T

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