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Question Posted Date  

What voltage levels will cause an overvoltage or undervoltage alarm?

Answer:
All Yaskawa Sigma and LEGEND series amplifiers recommended input power specifications are nominal +10% to -15%.

For a 100VAC Class (100-115VAC) amplifier +10% / -15% equates to 75 - 126 VAC respectively.
For a 200VAC Class (200-230VAC) amplifier +10% / -15% equates to 170 - 253 VAC respectively.
For a 400VAC Class (380-480VAC) amplifier +10% / -15% equates to 323 -528 VAC respectively.

The A.400 (Overrvoltage) Alarm will occur at the following voltage thresholds:

For a 100-VAC Class amplifier 145 VAC or more
For a 200-VAC Class amplifier 290 VAC or more
For a 400-VAC Class amplifier 580 VAC or more
For a 200-VDC Class amplifier 410 VDC or more
For a 400-VDC Class amplifier 820 VDC or more

The A.410 (Ondervoltage) Alarm will occur at the following voltage thresholds:

For a 100-VAC Class amplifier 49 VAC or less
For a 200-VAC Class amplifier 120 VAC or less
For a 400-VAC Class amplifier 240 VAC or less
For a 200-VDC Class amplifier 170 VDC or less
For a 400-VDC Class amplifier 340 VDC or less
Product Group/Line:
Servo Products, SGD, SGDB, SGDG LEGEND, SGDH Sigma II, SGDM, SGDS
Topic/Sub Topic:
Ask a Technical Question, Alarm
Document Number:
SRV-7N87DL
Published Date:
03/02/2015
03/02/2015

SAFETY PRECAUTIONS AND INSTRUCTIONS FOR USE OF FAQ INFORMATION!

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.