FAQ: UV3 -- Fault Code Description
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Digital Operator Display Text: UV3 MC Answerback
Description: Soft Charge Circuit Fault. The pre-charge contactor opened while the Drive was running.
Causes: Contacts on the soft charge contactor are dirty and the soft charge contactor does not function mechanically.
Corrective Actions: Cycle power off and on to the Drive - - - Check the condition of the soft charge contactor - - - Repair or replace the Power PCB/Gate Drive PCB.
For information on resetting a fault, see FAQ# DRV-5P8PGJ.
For more information and a complete list of fault codes see the following manuals TM.E7.01, TM.F7.01 and TM.P7.01.
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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