FAQ: When running into hardware limits, motion is disabled in both directions. How can the axis be jogged off the limit switch?
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When running into a hardware limit switch with the MP940 controller, the drive decelerates the motor to a stop. The method of stopping depends on Pn001 setting. This also causes an A.9F alarm in MP940, which prevents the motor from moving.
To enable and move the motor off the limit switch, the user must reset the alarm by toggling bit 6 of OWC000 in MW (The servo and the motion commands must be off before resetting.) If using MW+, the RESET FAULT icon must be executed.
After the reset, the servo can be enabled and moved in the reverse direction of the limit.
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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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If you have an urgent request, please call: 1-800-YASKAWA (927-5292) or 1-847-887-7000.Electronically
To contact us electronically, please select your type of request and complete the form.Yaskawa America, Inc. - Drives & Motion Division
2121 Norman Drive South
Waukegan, IL 60085