kbcombs
Member
Howdy,
I am currently fighting a gray code encoder and gear ratio problem. Hardware is SLC 5/04, AD 1024 bit Gray code encoder. I am able to get the encoder to work properly with a 1:1 ratio. The problem is the machine builder mounted the encoder to a shaft that has an 84:44 gear reduction. This equates to 1.909 repeating. The encoder is mounted on the 44 tooth gear and the fixture that I need to read degrees is on the 84 tooth gear. I know that when the encoder turns 360 degrees the fixture shaft turns 188.57142 degrees. This is great but the encoder resets to zero degrees. I can try to capture the reset and make an offset to the value, but there is still 17.14285 degrees remaining after the second complete revolution of the encoder compared to the fixture shaft. Has anyone had to fight this kind of problem before, or have any ideas what direction to go?
P.S.: I am trying to get the machine builder to make the encoder a 1:1 relationship with the fixture shaft, but they are fighting me very hard. If someone here knows for sure that this won't work well or at all, it would be some good ammo for me to use to get them to change it.
Thanks, Kyle
I am currently fighting a gray code encoder and gear ratio problem. Hardware is SLC 5/04, AD 1024 bit Gray code encoder. I am able to get the encoder to work properly with a 1:1 ratio. The problem is the machine builder mounted the encoder to a shaft that has an 84:44 gear reduction. This equates to 1.909 repeating. The encoder is mounted on the 44 tooth gear and the fixture that I need to read degrees is on the 84 tooth gear. I know that when the encoder turns 360 degrees the fixture shaft turns 188.57142 degrees. This is great but the encoder resets to zero degrees. I can try to capture the reset and make an offset to the value, but there is still 17.14285 degrees remaining after the second complete revolution of the encoder compared to the fixture shaft. Has anyone had to fight this kind of problem before, or have any ideas what direction to go?
P.S.: I am trying to get the machine builder to make the encoder a 1:1 relationship with the fixture shaft, but they are fighting me very hard. If someone here knows for sure that this won't work well or at all, it would be some good ammo for me to use to get them to change it.
Thanks, Kyle