Rockwell Automation 1784-PM16SE SoftLogix Motion Card Setup and Configuration Manual - Manual (Page 414)

Publication 1784-UM003A-EN-P – June 2003
406 Motion Object Attributes
Tuning Speed The Tuning Speed attribute value determines the maximum speed of the
MRAT (Motion Run Axis Tune) initiated tuning motion profile. This attribute
should be set to the desired maximum operating speed of the motor prior to
running the MRAT instruction. The reason for doing this is that the tuning
procedure will measure maximum acceleration and deceleration rates based on
ramps to and from the Tuning Speed. Thus, the accuracy of the measured
acceleration and deceleration capability is reduced by tuning at a speed other
than the desired operating speed of the system.
Tuning Torque The Tuning Torque attribute value determines the maximum torque of the
MRAT (Motion Run Axis Tune) initiated tuning motion profile. This attribute
should be set to the desired maximum safe torque level prior to running the
MRAT instruction. The default value is 100%, which yields the most accurate
measure of the acceleration and deceleration capabilities of the system. In
some cases a lower tuning torque limit value may be desirable to limit the stress
on the mechanics during the tuning procedure. In this case the acceleration
and deceleration capabilities of the system are extrapolated based on the ratio
of the tuning torque to the maximum torque output of the system. Note that
the extrapolation error increases as the Tuning Torque value decreases.
GSV/SSV Access Attribute Name Data Type Values
SSV/GSV Tuning Speed REAL
Position Units / Sec
GSV/SSV Access Attribute Name Data Type Values
SSV/GSV Tuning Torque REAL
%