Position loop ki zone, Low pass filter, Low pass bandwidth – Rockwell Automation 2098-DSD-xxx Ultra3000 Digital Servo Drives with DeviceNet User Manual

Page 79

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Publication 2098-RM004A-EN-P – August 2002

Programming Reference

2-63

60

Set

Position Loop Ki
Zone

UDINT

4

Cnts

The region around the commanded position where
integral gain is active. If the position error is greater
than Ki Zone, the integrator is not active.
Range: 0 to 0x7fffffff
Default: 1000

61

Set

Low Pass Filter

USINT

1

Selects whether to enable or disable the drive's low
pass filter.
0 - Disable
1 - Enable (default)

62

Set

Low Pass
Bandwidth

UINT

2

Hz

The bandwidth of the low pass filter. This value
indicates the cutoff frequency of the low pass filter.
The filter reduces noise generated by encoder
resolution or mechanical resonance in the system.
Range: 1 to 992
Default: 150

63

Set

Start Autotune
Command

USINT

1

Starts autotuning if the drive is enabled and
Parameter 28, Host Control Mode is set to 4 -
Autotuning.
0 - No Action (default)
1 - Execute Command

64

Set

Tuning Direction

USINT

1

Select the direction in which the motor rotates
during autotuning.
0 - Bi-Directional (default)
1 - Forward Only
2 - Reverse Only

65

Set

Autotune
Maximum
Distance

UDINT

4

Cnts

The maximum distance the motor will turn when
performing autotuning. The autotune distance
should be set as large as the application permits, so
that the autotune algorithm is able to collect
sufficient data to compute new tuning gains.
Range: 1 to 0x7fffffff
Default: 1000000

66

Set

Autotune Step
Current

USINT

1

%

The current the drive will command when performing
autotuning. The value is a percentage of the lesser
of the intermittent (peak) drive current rating and
intermittent (peak) motor current rating. The
autotune current is normally set to 10%, but may
need to be increased in the presence of large
inertias or high friction. In these systems, higher
settings ensure that the autotune algorithm is able
to collect sufficient data to compute new tuning
gains.
Range: 1 to 100
Default: 10

67

Set

Tune Position
Step

UINT

2

Cnts

The amplitude of the drive's commanded position
step (square wave) during manual position tuning.
Range: 1 to 32767
Default: 500

Parameter Object,
Instances ID = 1- 1059

Parameter
Instance

Access
Rule

Parameter
Name

Data
Type

Data Size
(Bytes)

Units /
Scale

Description

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