Yaskawa SMC–4000 - Manual (Page 255)

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SMC–4000 User Manual
VT (Vector Time Constant)
[Motion]
DESCRIPTION:
The VT command filters the acceleration and deceleration functions in vector moves of VM (Coordinated
Motion Mode) , LM (Linear Interpolation Mode) type to produce a smooth velocity profile. The resulting
profile, known as Smoothing, has continuous acceleration and results in reduced mechanical vibrations.
VT sets the bandwidth of the filter, where 1 means no filtering and 0.004 means maximum filtering. Note
that the filtering results in longer motion time.
ARGUMENTS: VT s,t where
s and t are unsigned numbers in the range between 0.004 and 1.0, with a resolution of 1/256. The value s
applies to the S coordinate system and t applies to the T coordinate system.
USAGE:
OPERAND USAGE:
_VTn contains the vector time constant, for the specified coordinate plane, where n is S or T.
RELATED COMMANDS:
IT (Independent Time Constant)
EXAMPLES:
While Moving Yes Minimum n Value 0.004
In a Program Yes Maximum n Value 1.000
Command Line Yes Default Value 1.0
Controller Usage All controllers Default Format 1.4
VT 0.8 Set vector time constant for S coordinate
system
MG _VTT Return vector time constant for T coordinate
system
0.8