Hey guys and gals, I'm having some trouble with a CS350 cold saw with a Delta VFD model 022E21A. Yesterday it would power up and run but wouldn't get to the full rpm. It is a variable speed machine with up to 120 rpms but was only getting to around 40. Today I'm getting an error code ( AErr) which is an analog signal error. The fix for it says check wiring of ACI. Any idea where to start? VFDs are new to me but always willing to learn. I've tried looking for Youtube videos but can't seem to find what I'm looking for yet. The saw has been sitting awhile and unknown if it ever came up to full speed.
Thanks in advance.
Thanks in advance.