H u d s o n M a n u a l / R e v . 1 . 2 1
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P H O N E ( 5 8 5 ) 7 8 4 - 7 4 5 4
Encoder and Commutation Signals
Hudson motors have differential encoder outputs and single-ended
commutation (Hall) outputs.
Encoder and commutation tracks are optically read from the Hudson encoder
disk and then translated to driven signals present at the motor connector.
Encoder Track
Glass encoder
At left is a Hudson encoder disk. At right is a glass encoder disk on a motor that
was dropped on the floor.
Encoder & Commutation Board Power Requirements
Hudson motors require a 5VDC supply voltage to power the combined
encoder & commutation sensor board.
Input voltage (at motor connector)
4.5-5.5VDC (6.0VDC absolute max.)
Current draw, loaded*
180mA @ 5VDC
Current draw, unloaded
125mA @ 5VDC
*This value is based on a 200 ohm test load.
