FAQ: When is it necessary to connect an external regen resistor to the SGDG LEGEND amplifier?
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Install an external regen resistor if the regenerative power from the load exceeds the processing capability of the LEGEND amplifier (usually associated with alarm #3: regen circuit error). Connect the resistor to terminals B1 and B2 on the Legend amplfier. On 1kW and 1.5 kW amplifiers, remove the jumper wire between B2 and B3 . Turn OFF #5 of SW 1 to disable the regen overload alarm. When the regen alarm is disabled, be sure the resistor has enough capacity (after proper derating) to dissipate the regen energy of the load.
Refer to section 4.5 of the LEGEND Digital Torque Amplifier SGDG User's Manual for more details.
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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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