Encoder mounting
October 3, 2009admin No Comments »he Pittman motors i have is unfortunately not prepared for Encoder mounting.
On the ungeared side of the motor there is only about 2mm shaft free.
My solution to this was turning a small aluminium shaft extender and presfitting it on the small shaft and fastening with some lock-tight. The shaft is now about 12 mm and is sufficient for mounting the encoder wheel.
I got 2 pcs. HEDS-5500 F06 encoders from Avego Technologies. They are 2 channel and with 256 counts per revolution i will have 256*38 (gear ratio)= 9728 CPR 9728/37.6 (wheel circumference)= 258 counts per 1cm equals ~ 25.8 counts per 1 mm.
They are very easy to mount , mount the bottomplate with 2 2.5*5mm bolts, click the top part containing the wheel and encoder on and tighten the umbraco and you are ready to test!
The shaft you see below is the homemade 12mm shaft extender the diameter is
6 1/4″ . The bottom plate from the encoder is mounted too.
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