Rockwell Automation 20P PowerFlex Digital DC Drive User Manual

Page 143

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Rockwell Automation Publication 20P-UM001I-EN-P - February 2013

143

Programming and Parameters

Chapter 3

SP

EE

D

C

O

MMA

ND

Sp

eed Reg

u

la

to

r

447

[Speed Up Filter]

The time constant of the filter for the D (derivative) component of the Speed
Up function.
Note: See Speed Up Function on page

290

for more information.

Default:

Min/Max:
Units:

0

0 / 1000
ms

16-bit
Int

459

[SpdReg Kp Bypass]

The proportional gain (K

P

) of the speed regulator, expressed as a percentage

of Par 93 [Spd Reg Kp Base], when an encoder or tachometer feedback signal
is changed to armature feedback (Par 458 [SpdReg FB Bypass] = “Enabled”).

Default:

Min/Max:
Units:

0.90 x P459

max

0.01 / Based on drive current rating
%

Real

458

460

[SpdReg Ki Bypass]

The integral gain (K

I

) of the speed regulator, expressed as a percentage of Par

94 [Spd Reg Ki Base], when an encoder or tachometer feedback signal is
changed to armature feedback (Par 458 [SpdReg FB Bypass] = “Enabled”).

Default:

Min/Max:
Units:

0.30

0.00 / 100.00
%

Real

458

493

[Arm Volt Kp]

Proportional gain (K

P

) of the field voltage regulator expressed as a

percentage of the value defined in Par 495 [Arm Volt Kp Base].

Default:

Min/Max:
Units:

30.00

0.00 / 100.00
%

Real

495

494

[Arm Volt Ki]

Integral gain (K

I

) of the field voltage regulator expressed as a percentage of

the value defined in Par 496 [Arm Volt Ki Base].

Default:

Min/Max:
Units:

40.00

0.00 / 100.00
%

Real

496

495

[Arm Volt Kp Base]

The proportional gain (K

P0

) of the field voltage regulator (base value).

Default:

Min/Max:
Units:

Based on drive current rating

0.10 / Based on drive current rating
A / V

Real

493

496

[Arm Volt Ki Base]

The integral coefficient (K

I0

) of the field voltage regulator (base value).

Default:

Min/Max:
Units:

0.90 x P496

max

0.01 / Based on drive current rating
A / V / ms

Real

494

643

[SpdReg AntiBckup]

Allows control of over-shoot/under-shoot in the step response of the speed
regulator. Over-shoot/under-shoot can be effectively
eliminated with a setting of 0.3, which will remove backup of the motor shaft
when zero speed is reached. This parameter has no affect on the drive's
response to load changes. A value of zero disables this feature.
Note: This parameter was added for firmware version 4.001.

Default:

Min/Max:

0.0

0.0 / 0.50

Real

1016 [SpdFuncSelect]

Selection of the “Speed Up” or “Inertia/Loss compensation” function.
Notes: See Speed Up Function on page

290

for more information. Option 2

“Off” added for firmware version 4.001.

Default:

Options:

2 =

0 =
1 =
2 =

“Off”

“Speed Up”
“Inertia/loss”
“Off”

16-bit
Int

444,
445,
447,
1012,
1013,
1014,
1015

Fil

e

Gr

oup

No

.

Parameter Name & Description

See

page 110

for symbol descriptions

Values

Da

ta

T

yp

e

Rela

ted

A

A

A

A

A

A

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