Allen-Bradley ControlLogix Reference Manual

Chapter 4
CIP Axis Attributes
192 Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018
Skip Speed 3
Usage Access Data
Type
Default Min Max Semantics of Values
Optional - F Set/SSV REAL 0 -
Velocity Units
The Skip Speed 3 attribute sets the central speed of a skip speed band within
which the device does not operate. The skip speed value is signed.
Skip Speed Band
Usage Access Data
Type
Default Min Max Semantics of Values
Optional - F Set/SSV REAL 0 0
Velocity Units
When operating in Closed Loop Velocity mode, the Fine Velocity Command
block also supports Skip Bands that are most frequently used in applications where
certain speeds excite mechanical resonance frequencies of the motor and load.
The Skip Speed Band attribute determines the speed window around a skip speed
that cannot be commanded. Any command set-point within this window is
adjusted by the Skip Speed block to fall at either the upper or lower Skip Speed
Band boundary value. The device can smoothly accelerate or decelerate through
the skip speed band based on the ramp generator block but may not operate at a
set speed within the band. The Skip Speed Band is distributed ½ above and ½
below the skip speed. This Skip Speed Band attribute applies to all skip speeds
supported in the device. A value of 0 for this attribute disables this feature.
Ramp Velocity - Positive
Usage Access Data
Type
Default Min Max Semantics of Values
Optional - FV
Derived from Max
Speed
Get/SSV REAL 0 0
Velocity Units
The Ramp Velocity - Positive attribute is a positive value that defines the
maximum positive velocity command output of the Ramp Generator.
Ramp Velocity - Negative
Usage Access Data
Type
Default Min Max Semantics of Values
Optional - FV
Derived from Max
Speed
Get/SSV REAL 0 - 0 Velocity Units

Allen-Bradley ControlLogix Specifications

General

Brand	Allen-Bradley
Model	ControlLogix
Category	Industrial Electrical
Language	English