What is the fault 108 sub code? Any other faults? Speed of the elevator? How old is the unit? I'm guessing probably 10-15 year range. We had a lot of issues with older v3f drives as they age. You may have to retrofit a kdl16 drive. Check tach / resolver wheel and sheave surface for crud buildup. Also gov tach if you have one. The vibration makes me suspect one of your brakes may be dragging or loadweigher or rope tension may not be correct. Check 5 - 1 for current loadweigher %. Empty car should be 0 or close to it.
