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Rockwell Automation 20A PowerFlex 70EC/700VC User Manual

Page 122

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118

Engineering Parameters

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508 [Stability Filter]

The Stability Filter coefficient is used to adjust the
bandwidth of a low pass filter. The smaller the value
of this coefficient, the lower the bandwidth of the filter.

Default:

Min/Max:
Units:

3250

0/32767
1

✔ ✔

509 [Lo Freq Reg KpId]

This proportional gain adjusts the output voltage at
very low frequency in response to the reactive, or
d-axis, motor current. A larger value increases the
output voltage change.

Default:

Min/Max:
Units:

64

0/32767
1

✔ ✔

510 [Lo Freq Reg KpIq]

The proportional gain adjusts the output voltage at
very low frequency in response to the active, or
q-axis, motor current. A larger value increases the
output voltage change.

Default:

Min/Max:
Units:

64

0/32767
1

✔ ✔

511 [Ki Cur Reg]

This integral gain adjusts the output voltage in
response to the q and d axis motor currents. A larger
value increases the output voltage change.

Default:

Min/Max:
Units:

44

0/32767
1

✔ ✔

512 [Kp Cur Reg]

This proportional gain adjusts the output voltage in
response to the q and d axis motor currents. A larger
value increases the output voltage change.

Default:

Min/Max:
Units:

1600

0/32767
1

✔ ✔

D

ia

g

-DAC

s

523 [Bus Utilization]

This value sets the drive output voltage limit as a
percentage of the fundamental output voltage when
operating in 6 step mode. Values above 95%
increase harmonic content and jeopardize control
stability. This output voltage limit is strictly a function
of input line and resulting bus voltage.

Default:

Min/Max:
Units:

95.0%

85.0/100.0%
0.1%

✔ ✔

524 [PWM Type Sel]

Allows selection of the active PWM type. A value of 0
is default, and results in a change of PWM method at
approximately 2/3 of rated motor frequency. If this is
unacceptable for harmonic or audible reasons, a
value of 1 disables the change.

Default:

Min/Max:
Units:

0

0/1
1

✔ ✔

Di

ag-

V

ect

or Cnt

l

525 [Torq Adapt Speed]

Selects the operating frequency/speed at which the
adaptive torque control regulators become active as
a percent of motor nameplate frequency.

Default:

Min/Max:
Units:

10.0%

0.0/100.0%
0.1%

✔ ✔

526 [Torq Reg Enable]

Enables or disables the torque regulator.

Default:

Min/Max:
Units:

1

0/1
1

✔ ✔

527 [Kp Torq Reg]

Proportional gain for the torque regulator.

Default:

Min/Max:
Units:

32

0/32767
1

✔ ✔

528 [Ki Torq Reg]

Integral gain for the torque regulator.

Default:

Min/Max:
Units:

128

0/32767
1

✔ ✔

529 [Torq Reg Trim]

Torque Regulator trim gain. A larger value increases
the developed torque. Typically used to compensate
for losses between developed and shaft torque.

Default:

Min/Max:
Units:

1.0

0.5/1.5
0.1

✔ ✔

530 [Slip Reg Enable]

Enables or disables the slip frequency regulator.

Default:

Min/Max:
Units:

1

0/1
1

✔ ✔

531 [Kp Slip Reg]

Proportional gain for the slip frequency regulator.

Default:

Min/Max:
Units:

256

0/32767
1

✔ ✔

Fi

le

Gr

ou

p

No. Parameter Name & Description

Values

PF 70

PF 700

PF70

0H

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