VPI SDS speed issue


I am having trouble with a consistent speed on my Aries 2 two pulley setup. I find I have to at times set the frequency to almost 66 to get it spot on. At other times it may be at 63. I read somewhere about the voltage preset may need adjusting. How is that done or is there something else I should be looking to adjust? The motor stas at 115, shifts to about 84after warm And then maysettle down to about 72 Hz. Any help?
drpat

Showing 1 response by mallen123

How does one change the voltage on an sds?
Mine seems permanently set at 72 and only adjustable options are for frequency and changing speed from 33 to 45 rpm.