Optical incremnetal rotary encoder ！

Incremental rotary encoder rotates the output pulse by counting device to calculate its position, when the encoder does not move or power outage, counting on internal memory to remember the location of the device. Thus, when the power failure, the encoder does not have any movement, when work calls, encoder output pulse process, it can not have lost the pulse interference, or counting device will calculate and zero offset memory, and this species offset amount is impossible to know in order to know the results only after errors occur.
The solution is to increase the reference point, the encoder after every reference point, the reference position correction position count into the memory device. In the previous reference point, it is not guarantee the accuracy of the location. In the industrial in there every operation to go first reference point, turn the change and other methods.
Such methods for some industrial projects too much trouble, not even allowed to give change boot (boot will know the exact position), there are some conditions are not allowed due to interference effects arising from the wrong place, so there is an absolute encoder It appears.

Previous：Absolute rotary encoder
Next：Roundss 5000ppr through hollow shaft encoders Incremental rotary encoder