Panel mount Encoder Part Number: 77-9511-1. This encoder controls the Speed Set Point (speed knob on the front stinger of the WT-30)

DL Encoder 1000PPR Part Number: 80-6018. This encoder controls the Actual Speed (encoder drive roll)

Wt30 encoder 01

Wt30 encoder 02

If you turn the speed knob and the Speed Set Point does NOT change, then you need a new Panel Mount Encoder. Especially if you can manually change the speed set point via the touchscreen.

Wt30 encoder 03