YASKAWA MH SIGMA-5 Series User Manual (English)

Questions and Answers:

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Roger FlowersJul 28, 2025
Why is my YASKAWA MH SIGMA-5 Valve Positioners motor overheating?
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  Cynthia CarpenterJul 28, 2025
  If your YASKAWA Valve Positioners motor overheats, it may be due to several reasons. The ambient temperature might be too high, so you should reduce it below 40° C (104° F), keeping in mind that the positioner's operating range is 0 to 45° C (32 to 113°F). Another cause could be a dirty motor surface, which requires cleaning. Finally, the motor might be overloaded, in which case you should reduce the load or unbalanced load.
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Brandi GarciaAug 5, 2025
What to do if YASKAWA Valve Positioners motor does not start?
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  Cody DavisAug 5, 2025
  If the motor of your YASKAWA Valve Positioners does not start, there might be a loose connection. Check all wire connections to ensure they are secure. Alternatively, the system might be wired incorrectly, so verify that the wiring is correct. Overload could be another reason. In this case, you should reduce the load or reduce unbalanced load.
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Barbara ThompsonAug 11, 2025
How to fix unusual noise in YASKAWA MH SIGMA-5 Valve Positioners?
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  Amanda HoltAug 12, 2025
  If your YASKAWA Valve Positioners is making unusual noises, it could be due to a few reasons. First, check if the motor is loosely mounted and tighten the mounting bolts. Second, the positioners might be misaligned, requiring you to realign the headstock/tailstock. Lastly, a noisy bearing could be the issue; in this case, check the alignment, bearing noise, and lubrication. If the problem persists, call Yaskawa Motoman Customer Service.
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Molly BennettAug 19, 2025
What to do if weld quality is bad with YASKAWA MH SIGMA-5 Valve Positioners?
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  Rebecca PriceAug 19, 2025
  If the weld quality is bad when using your YASKAWA Valve Positioners, it might be due to misaligned brushes. Remove the brush(s) and reinstall them properly, then recheck as needed.