Par 27, Speed ref, Par 28 – Rockwell Automation 20D PowerFlex 700S AC Drives with Phase II Control Programming Manual User Manual

Page 34: With, Speed r, E to, Par 38

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34

Rockwell Automation Publication 20D-PM001C-EN-P - July 2013

Chapter 2

Programming and Parameters

No.

Name
Description

Values

Li

nk

ab

le

Re

ad

-W

ri

te

Da

ta

T

ype

26

SpdTrim2 Filt BW

Sets the frequency for the Speed Trim 2 filter.

Default:
Min/Max:
Units:

200.0000
0.0000/1000.0000
rad/s

Y

RW Real

27

28

Speed Ref A Sel

Speed Ref B Sel

Selects the speed reference source for the drive. The selected speed reference values converge in the final
selection of the drives speed reference with

Par 152

[Applied LogicCmd] and are selected with bits 28, 29, 30.

See the Block Diagrams beginning on page

173

for a description.

Default A:

Default B:

Options:

1 =

5 =

0 =
1 =
2 =
3 =
4 =
5 =
6 =
7 =
8 =

“Spd Ref 1”

“Preset Spd 1”

“Zero Speed”

9 = “Preset Spd 5”

“Speed Ref 1”

10 = “Preset Spd 6”

“Speed Ref 2”

11 = “Preset Spd 7”

“Sum Sref 1+2”

12 = “DPI Port 1”

“MOP Level”

13 = “DPI Port 2”

“Preset Spd 1”

14 = “DPI Port 3”

“Preset Spd 2”

15 = “Reserved”

“Preset Spd 3

16 = “DPI Port 5”

“Preset Spd 4”

29

Jog Speed 1

Sets the speed reference that the drive should use when responding to bit 18 [Jog 1] of

Par 152

[Applied LogicCmd].

Default:
Min/Max:
Units:
Scale:

0.0000
-/+8.0000 P.U.
rpm

Par 4

[Motor NP RPM] = 1.0 P.U.

Y

RW Real

30

Min Spd Ref Lim

Sets the minimum speed reference limit. This value may be negative or positive but not greater than

Par 31

[Max Spd Ref Lim].

Default:
Min/Max:
Units:
Scale:

0.0000
-8.0000/Par 31 [Max Spd Ref Lim]
rpm

Par 4

[Motor NP RPM] = 1.0 P.U.

RW Real

31

Max Spd Ref Lim

Sets the maximum speed reference limit. This value may be negative or positive but not less than

Par 30

[Min Spd Ref Lim].

Default:
Min/Max:
Units:
Scale:

0.0000
Par 30 [Min Spd Ref Lim]/8.0000
rpm

Par 4

[Motor NP RPM] = 1.0 P.U.

RW Real

32

Accel Time 1

Sets the rate of acceleration for all speed increases, with time in seconds to base speed.
Accel Rate =

Par 4

[Motor NP RPM] /

Par 32

[Accel Time]

Default:
Min/Max:
Units:

10.0000
0.0100/6553.5000
s

Y

RW Real

33

Decel Time 1

Sets the rate of deceleration for all speed decreases, with time in seconds to base speed.
Decel Rate =

Par 4

[Motor NP RPM] /

Par 33

[Decel Time]

Default:
Min/Max:
Units:

10.0000
0.0100/6553.5000
s

Y

RW Real

34

S Curve Time

Sets the S time (Round In and Round Out ) in seconds. Half of the time specified is added to the beginning and
half to the end of the applied ramp. The S time is independent of speed and results in a trapezoidal torque profile.
For example:

Default:
Min/Max:
Units:

0.5000
0.0000/4.0000
s

Y

RW Real

35

SpdRef Filt Gain

Sets the lead term for the Speed Reference filter. Values greater than 1 will result in a lead function and values
less than 1 will result in a lag function. A value of 1 will disable the filter.

Default:
Min/Max:

1.0000
-/+5.0000

Y

RW Real

36

SpdRef Filt BW

Sets the frequency for the Speed Reference filter.

Default:
Min/Max:
Units:

0.0000
0.0000/500.0000
rad/s

Y

RW Real

37

Spd Ref Bypass

The speed command after the limit, ramp and s-curve blocks. Link a source directly to this parameter to bypass
these blocks.

Default:
Min/Max:
Units:
Scale:

0.0000
-/+14112.0000
rpm

Par 4

[Motor NP RPM] = 1.0 P.U.

Y

RW Real

38

Speed Ref Scale

This parameter is multiplied with the value in

Par 37

[Spd Ref Bypass].

Default:
Min/Max:

1.0000
-/+1000.0000

Y

RW Real

39

Jog Speed 2

Sets the speed reference that the drive should use when responding to bit 23 [Jog 2] of

Par 152

[Applied LogicCmd].

Default:
Min/Max:
Units:
Scale:

0.0000
-/+8.0000 P.U.
rpm

Par 4

[Motor NP RPM] = 1.0 P.U.

Y

RW Real

S Curve Time = 1.0 second

Speed

Time in Seconds

0.5 sec.

Accel Time = 5.0 seconds

Total Ramp Time = 6.0 seconds

0.5 sec.

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