FAQ: How long will a Sigma II absolute encoder remember its absolute position data without a battery attached?
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If the battery voltage drops below the minimum voltage of 2.7V, an A.83 alarm will occur on the SGDH amplifier to signal that battery replacement is necessary. The battery should be replaced as soon as possible.
If the battery is removed (or the encoder cable is disconnected) while control power to the SGDH amplifier is off, the absolute encoder will lose its position data within 2 to 3 seconds. To prevent the encoder from losing its data, make sure you replace the battery while the SGDH amplier control power is on. After the battery has been replaced, the power to the amplifier should be cycled.
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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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