FAQ: What is an A.E7 alarm and how is it cleared?
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The A.E7 is an alarm from the Sigma2 (SGDH-xxyE) Servopack that is missing an option card such as an MP940 or NS300 If an amplifier previously had an option card attached, and it is missing at power up, this alarm will occur and persist until the following is performed.
Using a Hand Operator or the Built in Operator on the Servopack, the proper procedure is as follows:
1) Execute an "Initialize Parameters to Factory Default" Operation :Fn005 (Section 7.2.9 in Sigma2 manual)
2) Execute an "Alarm History Trace Back Clear" Operation: Fn006 (Section 7.2.5 in Sigma2 manual)
3) Execute an "Option Unit Detection Reset" Operation: Fn014 (Section 7.2.13 in Sigma2 manual)
Keywords: AE7, error
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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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