FAQ: When moving away from a overtravel condition, the Sigma V servo system seems to prevent torque or rapidly enable/disable as the axis is moving out of the overtravel region. Can this situation be prevented?
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When the servo is controlled in position or speed mode, the ServoPack will not command torque the direction of an active overtravel. To completely prevent this condition when moving out of a overtravel region, use the MC_TorqueControl function block with a velocity limit and direction to move out of the overtravel region and prevent the torque "cutout" behavior from occurring.
Otherwise, to reduce the torque cutout effects, turn off the controller feed forward setting, parameter 1310, which makes the condition more noticeable.
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Please read and understand the product instruction manual before installing, servicing or operating Yaskawa products. FAQ content and illustrations are provided as technical advice to augment the information in manual, not supersede it. It is not possible to give detailed instructions for all types of installation or support activities. The information described in the FAQs are subject to change without notice to improve the product or FAQ. Yaskawa assumes no responsibility for errors or omissions or damages resulting from the use of the information contained in any FAQ. All warnings, cautions and product instruction for product use must be followed. Installation, operation and maintenance should be carried out by qualified personnel. Failure to observe these and other precautions highlighted in the product manuals will expose the user to high voltages resulting in, serious injury or death. Qualified personnel are defined as individuals who are familiar with the installation, starting, operation and maintenance of Yaskawa products of the type described and have proper qualifications to perform the work.
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2121 Norman Drive South
Waukegan, IL 60085