Please check the filter frequency of the T/C module in its configuration.It usually have a setting from 10Hz to 100Hz and as you select the lower freq. the noise increases and vice versa.This feature is about AllenBradley module,Just check it with your PLC mfg.
Hope it helps you out.
bye
From the info you have given,the 35lbs wt. and the speed,I feel that you can use a stepper motor and a drive with encoder feedback.You can get a good accuracy and the stoppages can be programmed or you can fix sensors(proximity)at each stopping location.This is a very low cost solution as...