The instructions that came with my 5HP Columbo spindle, say that it should be warmed up at 50% of maximum name plate label speed for 4 minutes, then be run at 75% of the maximum name plate label speed for 3 minutes, and finally 3 minutes at full speed. I did not get a manual for my Delta VFD-B, and there isn't any info on this unit in my big SB binder either.
Question 1: Is there a built-in warm-up routine in my Delta VFD? If so, what keypad commands do I execute to bring up the warm-up routine? This would seem to be a pretty basic and obvious feature to include.
Question set 2: The Columbo spindle has two name plates, one says 18,000 RPM max @ 300Hz. The other name plate says 24,000 RPM max @ 400Hz. Do I select the frequency of 300Hz or 400Hz with the Delta VFD-B? How do I decide which frequency I should use? Or does it really make any difference? Or is the frequency beyond my control?
Thank you again for your assistance, Chuck