Configuration Manual Owner's manual

Publication 1784-UM003A-EN-P – June 2003

Motion Object Attributes 299

Motion Dynamics

Configuration

Maximum Speed

The value of the Maximum Speed attribute is used by various motion

instructions (e.g. MAJ, MAM, MCD, etc.) to determine the steady-state speed

of the axis. These instructions all have the option of specifying speed as a

percent of the Maximum Speed attribute value for the axis. The Maximum

Speed value for the axis is automatically set to the Tuning Speed by the MAAT

(Motion Apply Axis Tune) instruction. This value is typically set to ~90% of

the maximum speed rating of the motor. This provides sufficient “head-room”

for the axis to operate at all times within the speed limitations of the motor. .

Maximum

Acceleration/Deceleration

The Maximum Acceleration and Deceleration attribute values are frequently

used by motion instructions such as MAJ, MAM, MCD, etc., to determine the

acceleration and deceleration rates to apply to the axis. These instructions all

have the option of specifying acceleration and deceleration as a percent of the

Maximum Acceleration and Maximum Deceleration attributes for the axis.

The Maximum Acceleration and Maximum Deceleration values for the axis are

automatically set to ~ 85% of the measured Tune Acceleration and Tune

Deceleration by the MAAT (Motion Apply Axis Tune) instruction. If set

manually, these values should typically be set to ~85% of the maximum

acceleration and maximum deceleration rate of the axis. This provides

sufficient “head-room” for the axis to operate at all times within the

acceleration and deceleration limits of the drive and motor.

GSV/SSV Access Attribute Name Data Type Values

SSV/GSV Maximum Speed REAL Position Units / Sec

GSV/SSV Access Attribute Name Data Type Values

SSV/GSV Maximum Acceleration REAL

Position Units / Sec

SSV/GSV Maximum Deceleration REAL

Position Units / Sec